highaltitude.log.20130703

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[01:26] <aware> http://www.ebay.com.au/itm/FM-BAND-REJECTION-FILTER-F-Type-/150974182850?pt=AU_Car_Parts_Accessories&hash=item2326c335c2&_uhb=1
[01:26] <aware> yay or nay?
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[03:03] <arko> http://www.youtube.com/watch?feature=player_embedded&v=O37yJBFRrfg
[03:03] <arko> wow thats complicated
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[03:09] <Darkside> wow
[03:11] <stilldavid> this is incredibly informative
[03:14] <arko> i love geography
[03:14] <arko> and stuff like this
[03:14] <arko> this guys has a great channel
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[03:30] <Darkside> yeah, noticing that
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[05:28] <griffonbot> Received email: Steve Aerospace "Re: [UKHAS] Vague Launch Announcement XABEN-52 et al"
[05:50] <griffonbot> Received email: James Coxon "Re: [UKHAS] ANU-7: provisional foil balloon launch Saturday 6th"
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[06:29] <griffonbot> Received email: Anthony Stirk "Re: [UKHAS] ANU-7: provisional foil balloon launch Saturday 6th"
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[07:07] <fz> Hey guys, I'm doing my first balloon using a raspberry pi inspired by daveake. Right now I'm in the process of buying all the parts I need.
[07:07] <fz> Does anyone have a good receiver to recommend? I tried to get the Yaesu FT-790R but it's impossible to find
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[07:17] <UpuWork> hey fz you can use a Funcube Dongle
[07:17] <UpuWork> or for testing on a budget use any SDR
[07:17] <UpuWork> http://sdrsharp.com/
[07:18] <UpuWork> http://sdr.osmocom.org/trac/wiki/rtl-sdr
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[07:20] <fz> UpuWork: Hey, thanks. I'd prefer to use something which can capture the entire flight. I don't really know the funcube dongle but it doesn't seem capable of getting data from 25km. Does it? :)
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[07:20] <ibanezmatt13_> Good Morning :)
[07:21] <fz> I read somewhere that you shouldn't use that dongle for chasing your balloons.
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[07:22] <UpuWork> fz FCD is as sensitive as a "real" radio
[07:22] <WILLdude> Morning.
[07:22] <UpuWork> but yes the dongle is slightly less robust for running around a field
[07:22] <UpuWork> FT-817
[07:22] <UpuWork> ICOM IC-10R
[07:23] <ibanezmatt13_> Morning Will
[07:23] <UpuWork> hi will
[07:23] <ibanezmatt13_> Got anywhere with that code?
[07:25] <ibanezmatt13_> How's things UpuWork
[07:25] <UpuWork> not bad
[07:25] <UpuWork> I'll go chase postie today
[07:25] <ibanezmatt13_> thanks :)
[07:25] <ibanezmatt13_> WILLdude: which Arduino do you have?
[07:26] <WILLdude> Uno
[07:26] <ibanezmatt13_> ok, thanks
[07:26] <WILLdude> And yes I kinda have got somewhere.
[07:26] <ibanezmatt13_> Good stuff
[07:26] <WILLdude> I have the oomlout starter kit.
[07:27] <ibanezmatt13_> Never heard of it personally, what's that?
[07:27] <WILLdude> ^
[07:28] <ibanezmatt13_> ah yes, they do similar for the Pi. Great things to have
[07:29] <ibanezmatt13_> WILLdude: what are you using that FTDI cable for?
[07:29] <WILLdude> Are you launching soon?
[07:29] <WILLdude> Err.
[07:29] <WILLdude> I'm not atm.
[07:29] <ibanezmatt13_> August 17th (we're going on holiday soon)
[07:30] <ibanezmatt13_> What will you eventually use it for
[07:30] <ibanezmatt13_> I guess for serial?
[07:30] <WILLdude> Ubx
[07:31] <WILLdude> So I can debug while using the ubx
[07:31] <ibanezmatt13_> ah right
[07:31] <WILLdude> Anyway, off to the hellhole.
[07:31] <ibanezmatt13_> have fun
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[07:41] <fz> UpuWork: $ 200 + $50 shipping for a FT-790R makes sense to you?
[07:42] <ibanezmatt13_> on this guide on the wiki: http://ukhas.org.uk/guides:ublox6 It says you need a UM232 Serial UART Development Module or equivalent. Why is this needed?
[07:43] <fz> I'm still not sure if FT-790R is the best choice for me. I'll only use as a receiver to chase balloons. But I really want to keep the connection with my balloons as much as possible.
[07:45] <fsphil> I've used the funcube dongle a few times now, seems happy enough
[07:45] <griffonbot> Received email: Costyn van Dongen "[UKHAS] Re: Launch Announcement - HABANERO2 - Sunday 30/06/2013"
[07:46] <LeoBodnar> UpuWork: Found the bug that caused Lat/Lon issues
[07:47] <UpuWork> sounds fair fz
[07:47] <UpuWork> good LeoBodnar :)
[07:48] <costyn> ibanezmatt13_: that's if you're going to be doing following the example without attaching the gps to the arduino. it's a serial interface to the GPS. You can also use a FTDI or similar
[07:48] <costyn> (I think)
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[07:53] <costyn> We got a shot of the moon in the black sky: http://imgur.com/a/Jnktr#14
[07:53] <costyn> well, lots of shots; this is one of them :)
[07:54] Nick change: Elwell_ -> Elwell
[07:54] <fsphil> amazing how dark the moon is
[07:54] <costyn> yea, and tiny :)
[07:55] <fsphil> imagine how bright the night would be with a full moon if it was white
[07:55] <costyn> heh
[07:55] <ibanezmatt13_> Thanks costyn
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[07:57] <costyn> fsphil: I'm still baffeled at how high the balloon is... its amazing you can see almost the entire country from up there. The whole coast line in any case
[07:58] <fsphil> you got a nice clear day too, cloudy but not hazy
[07:59] <costyn> yea... when we started out it was still cloudy and as we were setting up the sun came out, stayed in the sun for the rest of the flight
[08:00] <fsphil> cloud towards the UK too from the looks of it
[08:00] <costyn> yea... sometimes I think i see a coastline, but then I'm not so sure
[08:12] <HixWork__> ping babs
[08:12] Nick change: HixWork__ -> HixWork
[08:19] <x-f> costyn, nice and detailed writeup
[08:20] <x-f> i hope Maxell or some other folk in RevSpace will continue launching HABs in Netherlands when you leave
[08:22] <HixWork> Where you off to Costyn?
[08:25] <Maxell> x-f: we have some plans on doing floaters. They provide listening fun and don't require chasing.
[08:26] <x-f> sounds lazy, but cool :)
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[08:28] <fsphil> yes floaters are handy if you live near the ocean or sea too :)
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[08:37] <fz> Does this antenna make sense for chasing the ballon from the car ? http://www.ebay.com/itm/OPEK-VUM-201-BNC-DUAL-BAND-MINI-MAG-MOUNT-144-440-GAIN-TYPE-W-BNC-COAX-/310635260553?pt=US_Radio_Comm_Antennas&hash=item48534dea89
[08:39] <UpuWork> should be ok
[08:39] <UpuWork> I only used the Diamond MR77
[08:42] <Maxell> "and 3.0 db gain on uhf"
[08:43] <Maxell> well, you might not want so much extra gain.
[08:43] <Maxell> With chasing, it could end up in your blind spot :P
[08:45] <Maxell> I've seen it happen http://i.imgur.com/89qFPr4.png
[08:45] <Maxell> The signal was gone for some time :P
[08:49] <costyn> HixWork: I'm off to Curacao :) 1.5 weeks to go
[08:49] <fz> I guess I will get the Diamond mr77 then
[08:56] <costyn> x-f: and thanks :)
[08:57] <costyn> Maxell: plus floaters/pico's are cheaper
[08:59] <LeoBodnar> HixWork: These light beacons you have found on the website are really bright. You are blinded by a flash if staring directly. I might stick one on the balloon launched on a clear calm night.
[08:59] <LeoBodnar> They can be seen from 2-3 miles away on the ground.
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[09:04] <HixWork> Costyn, for work?
[09:05] <HixWork> LeoBodnar, whoaa, what LEDs are they? That would be cool pulsing inside a balloon
[09:05] <HixWork> strobesonde
[09:05] <HixWork> lounds like a norweigan surname
[09:05] <HixWork> *Sounds
[09:06] <costyn> HixWork: yea my wifes work actually
[09:08] <HixWork> costyn, Nice!! Though don't fancy your chances of HAB recovery on an island that small ;p
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[09:12] <LeoBodnar> They are superbright white LEDs. Mostly used on model free flying models to keep track of the model at dusk or murky weather.
[09:12] <UpuWork> costyn is that for a holiday or for permanent ?
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[09:14] <gonzo__> illuminated pico, far safer than these fire lanterns
[09:15] <HixWork> LeoBodnar, Have you got a specsheet, I'm looking for some, for an underwater project
[09:18] <HixWork> anyone know if the magmount on the Watson WSM-270 whip is up to driving use or is it just a static thing?
[09:18] <LeoBodnar> HixWork: LED themselves?
[09:18] <HixWork> yeah, if you have
[09:21] <LeoBodnar> http://uk.farnell.com/osram/luw-cqdp-kulq-5e8g-1-k/oslon-150-uw/dp/2078834
[09:21] <SpeedEvil> I was looking at a ring of cree XMLs.
[09:21] <SpeedEvil> With a 30 degree pattern - pulsed at 10W.
[09:21] <LeoBodnar> I am using short polse mode so heat is not an issue for me.
[09:21] <SpeedEvil> Major plus is you don't need a heatsink.
[09:22] <LeoBodnar> pulse
[09:22] <LeoBodnar> Once I have turned it on and it desoldered itself from the PCB within 30 seconds.
[09:22] <LeoBodnar> turned purmanently on
[09:23] <LeoBodnar> oh, ignore spelling
[09:23] <fsphil> HixWork: I've had that on the roof a few times, seemed to stick fine
[09:23] <fsphil> though I don't drive that fast
[09:23] <costyn> UpuWork: that is permanten, for 3 years
[09:23] <costyn> HixWork: so yea, no more HABbing for me for a while
[09:24] <fsphil> would be cool though
[09:24] <fsphil> hire a boat for the recovery
[09:24] <SpeedEvil> costyn: Where is curaco?
[09:24] <SpeedEvil> Sounds exotic.
[09:24] <costyn> SpeedEvil: carribian
[09:24] <SpeedEvil> Hawt.
[09:25] <costyn> SpeedEvil: just north of Venezuela
[09:25] <costyn> SpeedEvil: literally yes :)
[09:25] <UpuWork> wow nice costyn keep in touch :)
[09:25] <costyn> UpuWork: I'll be right here don't worry :P
[09:26] <fsphil> complaining about the weather ...
[09:26] <costyn> fsphil: yes, mostly about how hot it is and how quickly my cocktail warms up by the side of the pool :P
[09:26] <fsphil> lol
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[09:27] <SpeedEvil> Looks like low wind. A 'standard' launch goes 40 miles now.
[09:30] <costyn> SpeedEvil: from curacao?
[09:30] <SpeedEvil> Yes
[09:31] <kokey> curacao, where dutch men go to be naughty
[09:31] <costyn> kokey: really? :)
[09:31] <costyn> so what did you guys think about our camera platform? http://imgur.com/a/Jnktr#1
[09:31] <kokey> I worked for partygaming/poker/casino years ago
[09:32] <kokey> and one of our network guys worked for an operation there for a while
[09:32] <kokey> he talked about it fondly
[09:32] <SpeedEvil> costyn: Any gyros or stuff - or just passive?
[09:33] <SpeedEvil> Will you be covering that to make a sail?
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[09:33] <costyn> SpeedEvil: passive :)
[09:33] <costyn> SpeedEvil: and it flew this weekend already, working pretty well
[09:34] <costyn> kokey: heh... well it's a touristy place but nothing out of the ordinary as far as Ik now
[09:34] Action: SpeedEvil wonders if the winds ever reach the USA.
[09:34] <SpeedEvil> Though, balloons landing in the USA from south america may be looked on with some suspicion.
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[09:35] <costyn> heh
[09:35] <costyn> indeed
[09:36] <costyn> the problem with habbing there would be mostly the lack of a listener network
[09:36] <HixWork> cheers LeoBodnar
[09:36] <HixWork> costyn, should be 3 enjoyable years of life
[09:36] <SpeedEvil> costyn: Well - APRS
[09:36] <SpeedEvil> Thoguh I don't know how developed the network is there.
[09:37] <UpuWork> thanks LeoBodnar RF modules turned up
[09:39] <costyn> HixWork: yes should be fun, if a little less geeky; electronics supplies are going to be limited and expensive
[09:39] <HixWork> I'm guessing lots of supplies are going to be limited and expensive :)
[09:39] <costyn> SpeedEvil: I have no idea either. And I don't have a license so can't officially use it
[09:39] <costyn> HixWork: yup
[09:40] <SpeedEvil> APRS seems fairly numerous.
[09:44] <HixWork> ah cool cheers fsphil missed that reply
[09:44] <HixWork> looks like a usegul antenna for chasing
[09:45] <HixWork> I've got a mini PCIe card for the thinkpad with GPRS and GPS, so have 3G and memorymap for chasing now :)
[09:45] <SpeedEvil> costyn: The random things you learn. I would have never guessed netherlands.Ooh - fun. 'Beginning in January 2014, the Lynx rocketplane is expected to be flying suborbital space tourism flights and scientific research missions from a new spaceport on Curaçao.[39][40]'
[09:45] <HixWork> plus I found a 150W inverter & 3 way lighter socket adaptor in the garage over the weekend. Charge city
[09:45] <SpeedEvil> https://en.wikipedia.org/wiki/Cura%C3%A7ao
[09:47] <costyn> SpeedEvil: yea, not likely
[09:47] <costyn> SpeedEvil: mostly PR
[09:48] <SpeedEvil> costyn: Meh. Next you'll be telling me that eestor won't make car capacitors :)
[09:49] <SpeedEvil> The following data from new layer material was certified by TesCom:Average thickness of the four layers = 25.1 microns. The area of each of the four layers = 0.403 centimeters squared. The average volume of the four layers = 0.00101 centimeters cubed.
[09:49] <SpeedEvil> Hmm.
[09:50] <costyn> SpeedEvil: I thought it was another compnay doing this from Curacao; a Dutch company which only had aplans... not sure how far XCOM is
[09:51] <SpeedEvil> 220uF/cm^3
[09:53] <LeoBodnar> Welcome HixWork, new tracker PCB revision has showed up. sans TCXO bodge
[09:54] <LeoBodnar> s/HixWork/UpuWork/
[09:54] <SpeedEvil> Of the order of 220J/cm^3, 220kJ/l, 50Wh/kg.
[09:55] <LeoBodnar> UpuWork: I am very curious how well your 26MHz TCXO stays on the frequency without active correction. It is amazing that it is only 0.5ppm through the whole temp range
[09:56] <SpeedEvil> Phones and such tend to need this.
[09:56] <SpeedEvil> So it gets made cheap.
[09:56] <SpeedEvil> Mass production is wonderful.
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[10:06] <LeoBodnar> Mass production is slowly killing us I think
[10:06] <SpeedEvil> that too
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[10:10] <UpuWork> me too LeoBodnar :)
[10:12] Nick change: HixWork_ -> HixWork
[10:16] <HixWork> costyn, listening [and watching] to that Biting Elbows - 'Bad Mother4er' vide from your G+ - its great
[10:24] <HixWork> Whos flight was Helios?
[10:25] <HixWork> theres a refernce to Helios _STOLEN in userlist?!
[10:26] <costyn> HixWork: haha... did I share that?:)
[10:27] <costyn> ah yea the video is briliant
[10:27] <costyn> https://vimeo.com/62092214 (in case any one is wondering... perhaps NSFW)
[10:30] <HixWork> Well the title is NSFW :D
[10:30] <HixWork> but the FPS style of shooting the video is ace
[10:31] <HixWork> And I am not into games at all
[10:33] <costyn> HixWork: bought the song on itunes as well. great to listen to in the car and get all riled up
[10:33] <costyn> hehe
[10:34] <Helios_STOLEN> HixWork, you hollered?
[10:35] Nick change: Helios_STOLEN -> HeliosFA
[10:42] <griffonbot> Received email: David Akerman "Re: [UKHAS] Launch Announcement - Brightwalton - 29th/30th June"
[10:43] <LeoBodnar> UpuWork: Who maintains this page? http://ukhas.org.uk/projects:microballoons:data I think it is better to keep all the foil balloons info on in one place.
[10:44] <daveake> It's a wiki. So you do :-)
[10:44] <daveake> You have to create an account then the wiki is yours to enhance :)
[10:47] <LeoBodnar> cheers daveake - do I need an account to be approved?
[10:48] <daveake> Don't think so
[10:49] <LeoBodnar> cool
[10:49] <mfa298> wasn't that changed recently so that someone ( UpuWork ?) has to approve the account (to defeat the spam bots)
[10:51] <x-f> yeah, it must be approved now
[10:51] <daveake> aah
[10:53] <HixWork> HeliosFA, I saw the Heilos_STOLEN and wondered if it could have been a phone from a launch that had been collected and was being used
[10:54] <HixWork> seeing as you have updated nick, I assume I was wrong
[10:55] <HeliosFA> indeed - it is one of my alternative nicks...
[10:56] <HixWork> ahhh :D
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[10:56] Action: HixWork tears up the Forensic Science Service application form :D
[11:00] Action: mfa298 wonders how many times HeliosFA is logged into irc today (only twice by the looks of things)
[11:00] <HeliosFA> anf from how many places :P
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[11:01] <Lunar_LanderU> hello
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[11:08] <PE2G> Lunar_LanderU: Hello Kevin, are you still planning to launch at the end of July?
[11:08] <Lunar_LanderU> at the moment, yes
[11:08] <Lunar_LanderU> one moment please
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[11:14] <Lunar_LanderU> back
[11:14] <Lunar_LanderU> PE2G: yeah looks like it at the moment
[11:14] <PE2G> From Osnabrück?
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[11:17] <Lunar_LanderU> yes
[11:17] <Lunar_LanderU> most probably with NTX2 434.650 MHz
[11:18] <PE2G> You still have to build the transmitter?
[11:19] <Lunar_LanderU> no, it's integrated
[11:19] <Lunar_LanderU> so we will have that frequency for sure
[11:20] <Lunar_LanderU> maybe we have a second transmitter built by a nearby ham using FM, but he will post me the details
[11:21] <PE2G> Interesting. What mode will he use on FM?
[11:25] <griffonbot> Received email: David Bowkis "Re: [UKHAS] ANU-7: provisional foil balloon launch Saturday 6th"
[11:26] <Lunar_LanderU> will have to ask him about that
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[11:30] <LeoBodnar> UpuWork: could you please approve my account on Wiki if it needs approval?
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[11:39] <UpuWork> sure 1 sec
[11:39] <UpuWork> done LeoBodnar
[11:47] <Lunar_LanderU> hopefully my DS18B20 works, swapped the two I have
[11:47] <Lunar_LanderU> now the one used on the March 5 flight is in
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[11:57] Nick change: Steffann -> Steffanx
[11:57] <anerDev> hi guys
[11:58] <Lunar_LanderU> hi
[12:03] <anerDev> Lunar_LanderU I'm buying this mag antenna: http://www.ebay.it/itm/2m-70cm-Micro-Mag-Small-but-powerful-Antenna-/300714094809?pt=UK_Mobile_Phones_Communication_Radio_Antennas&hash=item4603f4f0d9&_uhb=1
[12:04] <LeoBodnar> Ta UpuWork
[12:04] <anerDev> yas was arrived 2 days ago, this yagi: http://cgi.ebay.it/ws/eBayISAPI.dll?ViewItem&item=250826224761
[12:04] <Lunar_LanderU> cool
[12:05] <anerDev> is good the mag ?
[12:05] <PE2G> anerDev: I use that yagi too. I works very well.
[12:05] <anerDev> oh yes PE2G
[12:05] <anerDev> =D
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[12:05] <anerDev> Lunar_LanderU is good the mag ?
[12:07] <PE2G> anerDev: is the mag intended for mobile use?
[12:07] <anerDev> yes, over the car
[12:07] <anerDev> when I move I use the mag
[12:07] <anerDev> when I stop, the car, go down and use tha ygi
[12:08] <Lunar_LanderU> the antenna looks reasonable to me
[12:09] <PE2G> anerDev: The proof of the pudding is in the eating :)
[12:10] <anerDev> uhahua
[12:10] <anerDev> ok guys, I'm ordering
[12:10] <anerDev> =D
[12:10] <anerDev> thank u
[12:10] <anerDev> I will eat and tell you how is !
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[12:17] <Jess--> it looks to be very similar construction to my mini magmount, it's stayed in place at 106mph
[12:18] <Jess--> no problems with reception on mine
[12:24] <mfa298> Jess--: surely you mean "70mph" (unless you've been testing in a wind tunnel) :p
[12:24] <Jess--> but of course I meant testing on a private track
[12:25] <Jess--> ;)
[12:25] <Lunar_LanderU> swapping sensors sometimes helps http://s.gullipics.com/image/0/n/1/ji1rd83-kstgzj-zy7p/Graph2.png
[12:25] <Lunar_LanderU> ;)
[12:25] <HixWork> Jess--, what do you have? I was looking at the Watson WSM-270 and I plan on driving in a windtunnel, on private land ;p
[12:26] <fsphil> I've had the watson on my car at 60mph
[12:26] <fsphil> was still there when I got back
[12:27] <HixWork> I'm likely to forget about the antenna and >60mph tbh
[12:27] <mfa298> I've got a comet that's done "70mph" on the motorway
[12:28] <jonsowman> I had the WSM-270 on my car yesterday, no issues at 80mph
[12:29] <Jess--> it's the one that maplins knock out, Mitex is the brand on the base, just did a quick test and the base is capable of picking up my yaesu 897 (just)
[12:29] <HixWork> hmm jonsowman that's sold the 270 to me then
[12:29] <mattbrejza> jonsowman: yours is tiny :P
[12:30] <HixWork> as its a more likley speed, maybe a wee bit conservative but close enough
[12:30] <jonsowman> HixWork: i even had a piece of fabric between the mount and the car to stop it damaging my paintwork
[12:30] <jonsowman> mattbrejza: haha yeah, works fine though :)
[12:30] <HixWork> even better then
[12:30] <jonsowman> also it was about £10
[12:30] <HixWork> wow, where
[12:30] <jonsowman> cpc i think
[12:30] <mattbrejza> we were doing 70mph with an antenna that was 1.5m
[12:30] <HixWork> cool
[12:30] <HixWork> cheers
[12:30] <fsphil> yea cpc sell it cheaper than most
[12:30] <mattbrejza> 3 5/8 wave...
[12:30] <Jess--> I do have a bigger 2/70 antenna on the car (gutter mounted since the car is old enough to still have gutters) but it would be a pain to get to the wiring to use it for chasing
[12:30] <fsphil> though often out of stock
[12:31] <jonsowman> £13.86 on farnell onecall
[12:31] <fsphil> http://cpc.farnell.com/watson/wsm-270/wsm-270-mini-mag-antenna/dp/IT44456
[12:31] <fsphil> same price
[12:31] <craag> I've never had issues with magmounts, biggest one I've got was fine at 120 on a curved roof (2m 5/8).
[12:31] <jonsowman> it's gone up a bit, but £16 is still pretty good
[12:31] <fsphil> the magnet on that watson is good for the size of the antenna
[12:31] <HixWork> yup got it 16.63
[12:32] <craag> Bent back a bit though..
[12:32] <jonsowman> HixWork: i tend to put it on the rear quarter and trap the cable in the door seal
[12:32] <jonsowman> so if it does fall off it won't disappear
[12:32] <HixWork> I only have front doors ;p
[12:32] <jonsowman> haha, front door seal works just as well :)
[12:32] <gonzo__> be brave and use the step cutter
[12:32] <craag> boot door seal can be good.
[12:32] <fsphil> I use the sunroof
[12:32] <HixWork> yup, passenger side though
[12:32] <jonsowman> oh sunroof is even better
[12:32] <fsphil> just enough cable outside that it helps hold it
[12:32] <fsphil> if it did fall
[12:33] <fsphil> same deal
[12:33] <jonsowman> wish i had a sunroof
[12:33] <jonsowman> where's that angle grinder
[12:33] <HixWork> plasma cutter
[12:33] <gonzo__> pneumatic mast
[12:33] <HixWork> oh, man. I've missed half of lunch. bbl
[12:34] <gonzo__> My old RR had a hole in the roof for a mast. Ex police one, with a rantry of halogens for incedent lighting
[12:34] <gonzo__> shame they didn't leave it in!
[12:35] <mfa298> I did have a CB/10m antenna on my roof once for a bit although hearing the wind going past it was a bit disconcerting (it's wider than most 2/70 mag mounts). For a small 2/70 mag mount I've never had any issues
[12:36] <fsphil> I still see the odd car with what looks like a CB antenna
[12:37] <Willdude123> Hi
[12:37] <fsphil> and yet nobody talking :)
[12:37] <mfa298> mine is generally tuned for 10m but occasional gets used for CB if I need comms with non licened people
[12:37] <Willdude123> daveake: Around?
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[12:38] <fsphil> there's a big transmitter tower on the mountain near here, and the building below it has what looks like a CB antenna
[12:38] <fsphil> or possibly military, not sure
[12:39] <fsphil> I'm not sure who operates the site
[12:39] <daveake1> round
[12:39] <daveake1> Gutters are good on cars. I put my mobile phone on one when near the landing site on Saturday. We then had to drive 400 metres down the road and I forgot to remove it :p
[12:40] <daveake1> Luckily it was still there after :)
[12:41] <Willdude123> Hi daveake1. You know you said you could send me the copy of K&R? Do you need my adress?
[12:41] <daveake1> Didn't someone link to the PDF for you?
[12:42] <Willdude123> Oh yeah.
[12:42] <daveake1> cheaper and easier than me trying to find my copy :)
[12:42] <Willdude123> Sorry forgot I had the PDF.
[12:42] <daveake1> Oh you have it?
[12:42] <daveake1> Well there you go
[12:43] <Willdude123> Well, I forgot I had the link to it.
[12:45] <griffonbot> Received email: Matthew Brejza "Re: [UKHAS] Re: Launch Announcement - UoS Outreach, East Midlands,
[12:45] <Willdude123> Trying to find the link again.
[12:45] BrainDamage (~BrainDama@ip-46-232-150-138.static.adsl.cheapnet.it) joined #highaltitude.
[12:46] <Willdude123> Can someone find the link from https://www.google.com/url?q=http://habhub.org/zeusbot/logs_highlighted/highaltitude.log.20130620.html
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[12:47] <Willdude123> It's blocked here.
[12:48] <mattbrejza> https://www.dropbox.com/s/t5fa19bq858x0ps/K%26R%20The_C_Programming_Language.pdf?m
[12:49] <mattbrejza> https://www.dropbox.com/s/vd7nbqh2zzdlfj5/Apress%20-%20Beginning%20Arduino%20Programming.pdf
[12:49] <mattbrejza> https://www.dropbox.com/s/yc1i2hoxlts762e/LearnCtheHardWay.pdf
[12:49] <Willdude123> Thanks.
[12:49] <mattbrejza> np
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[12:50] <Willdude123> Basically free printing here.
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[12:51] <Ugi> HI guys
[12:51] <Ugi> Bizarre question of the day: Is there a USB/LSB setting in dl-fldigi?
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[12:52] <fsphil> yep, beside the frequency
[12:52] <fsphil> it can be used to control the radio, if the radio offers an interface and you have the cable
[12:52] <mfa298> although I think that's mostly used for radio control
[12:52] <fsphil> or if not, set it to whichever the radio uses
[12:52] <fsphil> so fldigi knows which way the rtty should be
[12:53] <mfa298> there's also the RV button
[12:53] <Ugi> Sure - it's just that I have set up my SDR, which is working well but it took me an age to discover it needed to be on LSB
[12:53] <fsphil> set the SDR to USB and fldigi to the same
[12:53] <fsphil> that should be enough
[12:53] <fsphil> (and RV off in fldigi)
[12:53] <Ugi> I thought that might be the issue
[12:54] <Ugi> but I still can't see the setting on fldigi
[12:54] <mfa298> if its backwards in the sdr software check the swap iq setting as well (which also does weird stuff with tuning if it's wrong)
[12:54] <fsphil> http://ukhas.org.uk/_media/guides:sdr6.png
[12:54] <fsphil> it's beside the green bar
[12:55] <Ugi> OK - mine was set to RTTY
[12:55] <Ugi> Which I didn't think to change!
[12:56] <mfa298> try that on USB (or G4MYS keeps suggesting RTTYR - which I suspect has a similar affect in the software)
[12:57] <fsphil> yea RTTY is a bit backwards
[12:57] <fsphil> there's also an option somewhere to tell fldigi all modes are USB
[12:57] <mfa298> I'm guessing the assumption is that if you're doing RTTY you're on the lower HF bands so the radio mode will be LSB
[12:57] <fsphil> though that's in the hamlib tab, might only apply if hamlib is enabled
[12:59] <Ugi> Perfect - have both set to USB and decoding well now!
[12:59] <Ugi> I thought for a moment I had my payload transmitting backwards!
[13:00] <fsphil> that does happen, though not so much anymore
[13:00] <fsphil> the 1-pin setup makes it a lot simpler
[13:01] <mfa298> tracking other flights probably helps with that as well as you get the radio and dl-fldigi setup correctly for them.
[13:01] <Ugi> Yeah - I had tracked flights with my 790R but that's gone mad
[13:01] <Ugi> don't think the SDR will be sensitive enough
[13:02] <Ugi> although it's doing perfectly from a distance of about 2m!
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[13:02] <fsphil> a preamp would probably help
[13:02] <fsphil> though at that distance it may cause more trouble than it solves :)
[13:03] <Ugi> I don't even have an antenna on the payload and there's plenty of signal - preamp might be a bit much
[13:03] <Ugi> but for tracking, I'm sure you're right
[13:04] <fsphil> I had trouble at my last launch because of the preamp overloading the receiver
[13:04] <mfa298> I've tracked stuff with the sdr but it's not as sensitive as the fcd+ or real radio
[13:04] <fsphil> then forgot to switch it back on after the launch
[13:04] <fsphil> couldn't explain why the signal was so weak
[13:05] <Ugi> ok - another item for the shopping list: HABAMP
[13:05] <mfa298> I actually managed to get some packets with the sdr and the magmount it came with but I think I had to be well inside the green circle for that
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[13:07] <Ugi> I think I might actually be better getting another receiver - the SDR needs more CPU power than my netbook has so I'm tied to desktop for SDR.
[13:07] <Ugi> so for mobile I either need to buy a receiver
[13:07] <Ugi> or a laptop!
[13:08] <Jess--> try slowing down the waterfall on the netbook, that makes the difference between 50% cpu and 5% cpu on my laptop
[13:08] <mfa298> I had the same issues with the sdr, although I found sdr-radio has started working on an old atom based desktop which it used to not work on so I'm interested in whether it might work on the netbook now
[13:08] <Jess--> thats using hd-sdr
[13:09] <Ugi> is hd-sdr and alternative to sdr sharp?
[13:10] <Jess--> depends on how you want to use it, I prefer it to sdr# myself
[13:11] <Jess--> very simple interface (almost too simple)
[13:11] <mfa298> I've not used hdsdr for a while, but it does have a nice interface although I found it needed a bit more CPU than sdr#
[13:12] <Jess--> the main thing with hdsdr is that it supports NO sdr out of the box, you need to add a dll for the sdr you want to use
[13:12] <Ugi> OK - more CPU = bad! at least for my netbook
[13:12] <mfa298> As I've now got a decent laptop I've gone down the route of sdr-radio as it has up to 6 vfo's
[13:13] <mfa298> hdsdr might be better now (or sdr# worse than when I was testing it)
[13:13] <Jess--> mfa did you back off the speed of the waterfalls (or the sample width), it drops cpu usage by a large amount for a small slowdown of the waterfalls
[13:13] <Ugi> does that allow multiple payloads?
[13:14] <mfa298> Jess--: I think I had although it's been a while. I might need to boot the old netbook into windows sometime and test the various apps on it.
[13:15] <mfa298> Ugi: with sdr-radio you can get multiple payloads as long as they're all in the sample bandwidth of the sdr radio (so with the rtl you're good, harder with the fcd+)
[13:15] <mfa298> I think Jess-- has done the same with running two copies of hdsrd but it doesn't seem to be possible at all wih sdr#
[13:16] <Jess--> just testing here (waterfall running full speed sample width of 0.7hz gives 19% cpu load, dropping sample width to 11.7 hz and 90% speed on the waterfall takes it down to 2%)
[13:16] <Ugi> I see - well if I manage to get tracking with SDR then I might try that.
[13:17] <Jess--> I used to copies of hdsdr and some fiddling with the audio output from each (one output 0-3khz the 2nd output 3-6khz) which meant I could get 2 payloads signals combined into one audio signal.
[13:18] <Jess--> then fed that audio signal to 2 copies of fl-digi (one working on low audio freqs and one on high freqs
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[13:24] <Ugi> Well, with a very slow waterfall and 1M samples/sec I have the CPU off the ceiling - now to see if it will decode!
[13:24] <daveake1> Jess-- Yeah I did exactly the same and it worked well
[13:25] <Jess--> only issue I had daveake1 was running out of screen space
[13:25] <daveake1> not a problem here :p
[13:25] Nick change: daveake1 -> daveake
[13:25] <Jess--> shouldn't be here (3 x 22") 5760 x 1080
[13:26] <Jess--> trouble was I was also meant to be working
[13:26] Action: daveake points to (4 x 24") 7680 x 1200
[13:26] <daveake> :)
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[13:27] <Jess--> show off ;)
[13:27] <daveake> you started it :p
[13:27] <Jess--> lol
[13:27] <mfa298> for tracking multiple flights with an SDR I'm not sure you can have enough windows although I've only managed 2x 1080p (due to using a laptop), seems like you can't use the hdmi and vga ports at the same time :(
[13:27] <mfa298> s/windows/screens/
[13:27] <G0TDJ_Steve> daveake: May I ask you a couple of questions please?
[13:27] <Jess--> did I spot you sporting a new M6 callsign a couple of weeks back daveake
[13:28] <Chetic> Upu: can you describe the package so I can help the troublesome post office find it in the back?
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[13:28] <UpuWork> hey Chetic is there an issue ?
[13:28] <Chetic> is it standard cardboard brown? does it say airsure on it?
[13:29] <Chetic> no nothing major they just have to find it manually
[13:29] <daveake> Yeah M6RPI got it a few weeks ago
[13:29] <Jess--> Congrats
[13:29] <daveake> cheers, but hard to fail really :)
[13:29] <Jess--> still remember going for my m6 (last april)
[13:29] <UpuWork> PM Chetic
[13:30] <Jess--> worked through and got the M0 for december
[13:30] <daveake> cool
[13:30] <G0TDJ_Steve> daveake: May I ask you a couple of questions please?
[13:30] <Jess--> I would imagine that you could go through quicker (assuming you wanted to)
[13:31] <daveake> G0TDJ_Steve, sure
[13:31] <daveake> well intermediate is August or so I'll do that at least
[13:31] <G0TDJ_Steve> Cheers daveake Can you tell me what software you used on the recent flights for RasPi APRS Beaconing?
[13:31] <daveake> Not APRS
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[13:32] <G0TDJ_Steve> Didn't it activate once out of UK boundries?
[13:32] <daveake> No you may be thinking of Upu's flight that launched at the same time
[13:32] <G0TDJ_Steve> Ah! I better ask UPU then :-)
[13:32] <daveake> Mine was UHF rtty only; his also had APRS
[13:32] <daveake> Yes :)
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[13:33] <G0TDJ_Steve> Is UPU about?
[13:33] <ibanezmatt13> Good afternoon
[13:33] <UpuWork> I am but just busy can I come back to you in a min g0hww
[13:33] <UpuWork> durr
[13:33] <daveake> His code has a map and figures out which country it's above
[13:33] <UpuWork> G0TDJ_Steve
[13:33] <UpuWork> and you ibanezmatt13 don't go anywhere
[13:33] <ibanezmatt13> ok :)
[13:33] <G0TDJ_Steve> Of course UpuWork
[13:33] <daveake> The map is a list of lines describing the boundary of each country, approximately
[13:34] <mfa298> G0TDJ_Steve: you could also try talking to craag as I think he's done some ARPS from linux for use in the car (can't remember if he did it on a pi but it should be very similar)
[13:34] <daveake> So it enabled/disabled the APRS transmitter accordingly, and also added the correct country prefix to his callsign
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[13:34] <G0TDJ_Steve> Thanks mfa298
[13:35] <G0TDJ_Steve> craag: Are you around?
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[13:35] <HixWork> there is some code in git if you search for geofence G0TDJ_Steve
[13:35] <G0TDJ_Steve> HixWork: Is that APRS Software for Linux?
[13:36] <mattbrejza> https://github.com/Upuaut/APRS_Projects
[13:36] <HixWork> is some C code
[13:36] <HixWork> but gives you the idea of how it works, basically 0 or 1 if inside or outide a certain polygone in an array.
[13:36] <G0TDJ_Steve> OK HixWork I'm not good with C though. Prefer ready to go Bin
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[13:36] <HixWork> is as much as i can gather from reading it.
[13:37] <HixWork> is that correct gurus?
[13:37] <mfa298> G0TDJ_Steve: were you looking for APRS to fly (at least once outside the UK) or just for a ground based APRS station ?
[13:37] <UpuWork> right hi G0TDJ_Steve
[13:37] <UpuWork> how can I help ?
[13:37] <G0TDJ_Steve> mfa298: Stay tuned UpuWork Hi Darren
[13:38] <G0TDJ_Steve> I want to make a ground based APRS beacon with a Rpi
[13:38] <UpuWork> ok
[13:38] <G0TDJ_Steve> I have a bluetooth GPS which works on SPP and I've tested it on Win7
[13:38] <G0TDJ_Steve> I've ordered a BaoFeng rig for actial APRS and the rest is coming.
[13:39] <mattbrejza> G0TDJ_Steve: the c code is pretty minimal and could be translated to something else easily enough
[13:39] <mattbrejza> https://github.com/Upuaut/APRS_Projects/blob/master/Pico92/Pico92.ino#L236
[13:39] <G0TDJ_Steve> What I want to do is make a stand alone APRS unit for our radio club which will sit and beacon our position (and later on perhaps local weather)
[13:39] <G0TDJ_Steve> Also I'd like to add a webcam running through 3G to my website.
[13:39] <HixWork> is my understanding of the code correct mattbrejza?
[13:39] <HixWork> otherwise I'm doomed :)
[13:40] <G0TDJ_Steve> For starters UpuWork I;d like to get an RPi running APRS only and I wondered what software you used to do on your flight
[13:40] <mfa298> G0TDJ_Steve I think there are a few packages for linux to do aprs which might do what you want - I'm pretty sure that's what craag had done (although possibly with netbook rather than a pi)
[13:40] <G0TDJ_Steve> Thanks mattbrejza I'll have a look in a tick
[13:41] <mattbrejza> HixWork: you tell geofence_location() where you are, and it updates some variables to say what country. That function itself calls pointinpoly(), which checks for a particular country
[13:41] <UpuWork> Well G0TDJ_Steve I didn't use a Pi
[13:41] <UpuWork> I used an Arduino
[13:41] <UpuWork> well
[13:41] <UpuWork> AVR
[13:41] <mattbrejza> based on a series of coordinates stored in progmem
[13:41] <G0TDJ_Steve> UpuWork: LOL Right....
[13:42] <UpuWork> code is all online though
[13:42] <G0TDJ_Steve> UpuWork: Out of interest, which AVR did you use?
[13:42] <UpuWork> Atmega328p
[13:42] <G0TDJ_Steve> Cool, well done
[13:42] <UpuWork> has enough grunt to do APRS and RTTY at the same time using interupts
[13:43] <G0TDJ_Steve> UpuWork: Neat. The reason I want to use a Pi si to get my radio club interested in them as well as having a practical device to show off and use on our outside events.
[13:43] <mattbrejza> UpuWork: what sample rate was your 'DAC' running at for this?
[13:44] <UpuWork> sure someone may have done it
[13:44] <HixWork> mattbrejza, right, I think I have it. just badly worded. pretty sure i grasp the high level view
[13:44] <UpuWork> for what ?
[13:44] <UpuWork> APRS ?
[13:44] <mattbrejza> the aprs
[13:44] <UpuWork> wasn't using a DAC
[13:44] <UpuWork> its PWM
[13:44] <mattbrejza> hence 'dac'
[13:44] <mattbrejza> what rate did you update the pwm register then?
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[13:45] <UpuWork> can't remember give me a min or two I'll check the code
[13:46] <mattbrejza> ok dw
[13:46] <G0TDJ_Steve> UpuWork: mattbrejza HixWork daveake mfa298 THanks for all your help. I'll take a look at those pages you sent earlier. BBS
[13:46] <mattbrejza> UpuWork: cpu/256 it seems
[13:47] <UpuWork> #define PLAYBACK_RATE (F_CPU / 256)
[13:47] <mfa298> G0TDJ_Steve: from a very quick look there appear to be three pre-written apps on the pi that deal with aprs, I've not looked any more than the outpur from apt-cache search so don't know how suitable they are.
[13:47] <UpuWork> https://github.com/Upuaut/APRS_Projects/blob/master/Pico92/Pico92.ino
[13:48] <G0TDJ_Steve> mfa298: Can you list them for me please?
[13:48] <UpuWork> CPU was 4Mhz
[13:48] <mattbrejza> probably used 10-20% of the CPU then
[13:48] <mfa298> pi@pi ~ $ sudo apt-cache search aprs
[13:48] <mfa298> aprsd - Internet Gateway for the Automatic Position Reporting System
[13:48] <mfa298> aprsdigi - digipeater for APRS
[13:48] <mfa298> xastir - X Amateur Station Tracking and Information Reporting
[13:48] <mfa298> G0TDJ_Steve: ^^^
[13:48] <G0TDJ_Steve> mfa298: Many thanks!
[13:49] <G0TDJ_Steve> As luck would have it, some work just came in so I have to go. I really appreciate all your help guys. I'll be back later with a little luck!
[13:49] <G0TDJ_Steve> 73
[13:49] <mfa298> there's probably various other packages that you can just compile from source as well
[13:49] <G0TDJ_Steve> mfa298: Roger 73
[13:50] Nick change: G0TDJ_Steve -> G0TDJ_AFK
[13:52] <griffonbot> Received email: Mike Bessant "Re: [UKHAS] Re: Launch Announcement - UoS Outreach, East Midlands,
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[14:00] <nosebleedkt> Hello all
[14:01] <nosebleedkt> Quick question!
[14:01] <nosebleedkt> Have anyone tested 'cheap' Helium in a flight? By cheap I mean the Helium 4.6, 99,996v ?
[14:02] <UpuWork> isn't that normal balloon helium nosebleedkt ?
[14:02] <SpeedEvil> you don't care at all about 10% of imputirites
[14:02] <nosebleedkt> Dunoo :) I used only Helium 5, 99,999
[14:02] <SpeedEvil> As long as they're not xenon, radon, or HF.
[14:03] <nosebleedkt> Hello Upu and SpeedEvil
[14:03] <nosebleedkt> long time to hear from :)
[14:03] <UpuWork> indeed hi nosebleedkt
[14:04] <SpeedEvil> Hey
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[14:05] <nosebleedkt> Well, Im preparing a 'hi-tech' mission. I supposed to finish it this summer but everything goes to slow in the RnD
[14:06] <nosebleedkt> So to keep the thing warm I will launch a low-cost mission with previous equipment
[14:06] <nosebleedkt> from different place
[14:06] <nosebleedkt> and in paraller I'm building the hitech thing :)
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[14:07] <nosebleedkt> so you tell me for sure that helium 4.6 has been tested by many of you and its ok ?
[14:07] <SpeedEvil> It's quite irreelvant
[14:07] <nosebleedkt> what?
[14:07] <SpeedEvil> 10% of impurities make no difference.
[14:08] <SpeedEvil> You will not, without careful measurement - be able to tell any altitude difference.
[14:08] <mattbrejza> we flew 'balloon gas' on monday, it got a 1.5kg payload to 37.5km
[14:08] <SpeedEvil> And if you cared anyway, you'd be using hydrogen, not helium.
[14:08] <nosebleedkt> hihi
[14:09] <SpeedEvil> For simple bang for buck, you might even consider natural gas.
[14:09] <SpeedEvil> It's _way_ cheaper.
[14:09] <SpeedEvil> Though admittedly bursts several kilometers lower.
[14:09] <mattbrejza> i wonder if it would work for a foil pico
[14:09] <mattbrejza> if not, a 100g balloon is also cheap
[14:10] <SpeedEvil> A cubic meter of natural gas costs about 50p. It has about 700g of lift.
[14:10] <nosebleedkt> ok, you persuaded me
[14:10] <nosebleedkt> helium 4.6 is ok :)
[14:10] <SpeedEvil> Helium is the safer option of course.
[14:10] <mattbrejza> i wonder how long itll take to fill if you gaffa taped a hose to your hobs
[14:11] <nosebleedkt> i just orderd a 1200g chinese balloon and I will use a 1kg payload
[14:11] <nosebleedkt> hope its reaches >30km
[14:12] <SpeedEvil> mattbrejza: It's about 0.7kg/m^3 - so assuming 20MJ/m^3, that's at 3kW hob output - about 3 hours.
[14:12] <SpeedEvil> For a 30kw boiler comparison - about 30 mins
[14:13] <mattbrejza> yea i thought it would take a while for hobs to get thorugh 50p worth
[14:14] <SpeedEvil> (Note that a 3kW hob heats the pan with 1.5kW
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[14:23] <Lunar_LanderU> I am happy
[14:23] <Lunar_LanderU> that it was just a faulty DS18B20
[14:24] <LeoBodnar> Was it?
[14:25] <mattbrejza> they break on me quite a lot too
[14:25] <Lunar_LanderU> yeah I swapped the two DS18B20 I had
[14:25] <Lunar_LanderU> the one that was on the 644 before was on the radio chip and I got only about -1.8 °C
[14:25] <Lunar_LanderU> and the other one gave
[14:25] <Lunar_LanderU> one sec
[14:25] <Lunar_LanderU> http://s.gullipics.com/image/0/n/1/ji1rd83-kstgzj-zy7p/Graph2.png
[14:31] <Lunar_LanderU> looks much better
[14:31] <LeoBodnar> Yeah, better than before
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[14:38] <ibanezmatt13> UpuWork: I guess I won't need to change my code at all if it's based on the same ublox chip. Will the radio element be part of the PCB?
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[14:42] Nick change: ibanezmatt13 -> ibanezmatt13Work
[14:42] <ibanezmatt13Work> I'm technically working :)
[14:44] <ibanezmatt13Work> nah, doesn't look right
[14:44] Nick change: ibanezmatt13Work -> ibanezmatt13
[14:46] <Jess--> No point changing my nick when working (work from home)
[14:47] <ibanezmatt13> As do I, silly really
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[15:19] <Infinity_> Has anyone had any grteat sucess using nichrome wire to stop condensation forming on the outside of UV lens. If so what resistance and voltage ?
[15:20] <UpuWork> I tried it
[15:20] <UpuWork> didn't work
[15:20] <UpuWork> maybe not enough power
[15:21] <Infinity_> what voltage did you use?
[15:21] <UpuWork> it was basically a dew heater
[15:21] <UpuWork> 6v
[15:21] <UpuWork> http://www.google.co.uk/imgres?imgurl=http://www.celestronimages.com/data/media/9/Dew_Heater_Bray_14May2011.jpg&imgrefurl=http://www.celestronimages.com/details.php?image_id%3D9741&h=940&w=762&sz=561&tbnid=RQkrh2lxG70dQM:&tbnh=101&tbnw=82&zoom=1&usg=__EcZpQcM3lZA_lXIV52Uobo1gFiQ=&docid=nquktZ3hDIyqcM&sa=X&ei=a0HUUbqMKNSYhQeWzoDYCA&ved=0CEcQ9QEwBA&dur=671
[15:21] <Infinity_> That's what I had in mind!
[15:22] <daveake> Mondo Mick has done this dunno what power he used
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[15:23] <jarod> http://www.sun-sentinel.com/news/broward/hollywood/fl-pirate-radio-hollywood-20121229,0,5142922.story :D
[15:28] <HixWork> I'm guessing you didnt fly a Canon 300/2.8 upu ;p
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[15:37] <Willdude123> Hi people.
[15:37] <chrisstubbs> afternoon will
[15:37] <Willdude123> IRC is so slow at school.
[15:38] <Willdude123> Well, it's probably shellinabox that is,
[15:38] <Willdude123> Anyone know an easier method of accessing IRC?
[15:38] <Willdude123> (I have a server)
[15:38] <chrisstubbs> I host a qwebirc server at home now
[15:38] <mattbrejza> is the webchat blocked?
[15:39] <chrisstubbs> webchat.freenode probably is
[15:39] <Willdude123> Yeah
[15:39] <Willdude123> qwebirc doesn't work either,
[15:39] <chrisstubbs> qwebirc is okay but does time out from time to time
[15:39] <chrisstubbs> ah
[15:39] <Willdude123> Well, it goes on it, but it doesn't connect to irc.
[15:39] <Willdude123> Unless I had a Bouncer on a different port.
[15:40] <Willdude123> And connected to the BNC via webchat.
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[15:43] <HixWork> can you not use a socks proxy using putty from a stick?
[15:43] <HixWork> s'what I do at work
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[15:45] <Willdude123> No exes.
[15:45] <Willdude123> Presently I use shellinabox.
[15:45] <HixWork> irssi has been recommended
[15:45] <HixWork> though i've not used it
[15:45] <Willdude123> But it's slow, and no alt-lefts or alt rights.
[15:45] <Willdude123> I have irssi
[15:45] <Willdude123> I use shellinabox to connect.
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[15:49] <Willdude123> How do I get onto craag's websdr?
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[15:52] Action: Jess-- is grateful that there is no filtering on the connection from here
[15:54] <Willdude123> So that means you can watch porn
[15:54] <Jess--> if I wished to
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[15:55] <Willdude123> Does he still have one?
[15:56] <Jess--> no ports blocked (in or out) static block of 6 IP addresses, connection via 4x bonded adsl connections (6mb on each one)
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[15:57] <M6KZT> Jess--: which method of line bonding are you using there?
[15:57] <Willdude123> Are there any UK websdrs that cover 70cm?
[15:58] <Willdude123> ibanezmatt13: Hi
[15:58] <ibanezmatt13> Hi Willdude123
[15:58] <Jess--> not sure M6KZT it was done through eclipse
[15:58] <ibanezmatt13> eclipse the IDE?7
[15:58] <M6KZT> Jess--: we're bonding 3x FTTC lines here each one about 70 mbit :)
[15:58] <Jess--> eclipse the ISP
[15:59] <ibanezmatt13> Ah right
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[15:59] <Jess--> so you should be able to push it to around 170 mbit (allowing for losses in bonding)
[16:00] <ibanezmatt13> Willdude123: I found out some info on the Arduino. Is it true that you can remove the ATMEGA328 chip from the shield? If it is, that's pretty good for what I'd like to do eventually
[16:00] <Jess--> I would (almost) kill for that sort of bandwidth
[16:00] <Jess--> could you not just buy a bare chip ibanezmatt13 probably cheaper
[16:01] <ibanezmatt13> Jess--: Well, I'm gonna be using the sheild for things anyway but yes I probably will do eventually
[16:01] <M6KZT> Jess--: http://speedtest.net/result/2450912553.png ;)
[16:02] <mattbrejza> as were comparing connections: http://www.speedtest.net/result/2800614833.png :P (might be cheating)
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[16:02] <chrisstubbs> mattbrejza, nice upload
[16:02] <mattbrejza> totally necessary
[16:02] <M6KZT> good old JANET!
[16:03] <ibanezmatt13> Anybody know of any good tutorials for either Arduino or Pi that teach how to use i2c quite well?
[16:03] <M6KZT> I could do one on out 1gig colo server but that's cheating too!
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[16:03] <ibanezmatt13> Preferably Arduino
[16:03] <Willdude123> ibanezmatt13: Hmm not sure.
[16:03] <mattbrejza> i wonder at what speed you out perform the server
[16:03] <Willdude123> Which shield though?
[16:03] <ibanezmatt13> Uno
[16:03] <Jess--> M6KZT: I wasn't too far off with my estimate of what you could get out of that bonded connection
[16:04] <ibanezmatt13> In fact, may not have been an Uno, ignore me
[16:04] <Willdude123> It's not a shield.
[16:04] <Willdude123> I'm pretty sure websdr isn't intended for listening to german fm commercial stations but #YOLO
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[16:06] <Willdude123> COuld I set up a raspberry pi websdr?
[16:07] <Willdude123> ibanezmatt13: Have you seen the arduino yun?
[16:07] <ibanezmatt13> nope
[16:08] <Willdude123> It's basically and arduino with linux.
[16:08] <Willdude123> At some point, I might build an arduino yun.
[16:09] <Willdude123> And make it so that the linux side has direct pin access.
[16:09] <Willdude123> BUt that's a bit above my pay grade.
[16:09] <ibanezmatt13> cool, I think I'll stick to the Pi for Linux, I don't like the idea of having an OS on it for what I'll be using it for
[16:10] <Willdude123> Yeah
[16:10] <Willdude123> Either get the uno or both.
[16:11] <Willdude123> Wasn't really thinking of flying one.
[16:11] <Jess--> ibanezmatt13: when I was on about buying bare chip I meant like this http://www.ebay.co.uk/itm/110956802861
[16:11] <Willdude123> Are you livestreaming your launch?
[16:11] <ibanezmatt13> They look nice Jess--
[16:12] <chrisstubbs> ibanezmatt13 would probably want a bootloader preburned though
[16:12] <Jess--> if you ask around I am sure that there are cheaper sources around (given the amount that get used on here)
[16:12] <ibanezmatt13> Willdude123: I don't think we can live stream decent video in this country due to the bandwidth limit, but if you meant SSDV, I've got that working but I only have one cam, we'd prefer video
[16:12] <ibanezmatt13> chrisstubbs: I watched a video where you could use an arduino board with the chip removed to program a chip
[16:12] <ibanezmatt13> but a proper programmer sounds like the way to go
[16:13] <Willdude123> I mean from the launchsite?
[16:13] <Willdude123> 3g probably won't be fast.
[16:13] <Willdude123> Unless you're getting 4g?
[16:13] <daveake> Video streaming from the launch site, over 3G, has been done lots
[16:13] <ibanezmatt13> To be honest I never thought of that, we could do that easily
[16:13] <ibanezmatt13> With 3g yes
[16:14] <Willdude123> Or you could stream it to an ATV repeater somehow.
[16:14] <Willdude123> Wait no you have no licence.
[16:14] <ibanezmatt13> I'll stay simple :)
[16:15] <chrisstubbs> ibanezmatt13, yes that will work if you are programming a taget chip with a bootloader, but you need an ICSP programmer for sude & bootloader burning
[16:15] <chrisstubbs> *fuse
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[16:15] <ibanezmatt13> I think once I've mastered Arduino I'll certainly look into that
[16:16] <ibanezmatt13> For our next launch we're doing Pi and another microcontroller, probably Arduino but if I can do it, I'd prefer to get the Arduino onto a PCB
[16:17] <Willdude123> Has anyone live streamed their launch over ATV?
[16:18] <Willdude123> Is there a BATC irc chan?
[16:19] <HixWork> ping eroomde
[16:20] <HixWork> anyone know the name of the nutter who phones his place of work with new rocket ideas?
[16:20] <HixWork> I think he just called here
[16:20] <daveake> hah
[16:21] <Willdude123> Haha
[16:22] <Willdude123> HixWork: Where do you work?
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[16:24] <HixPad> It's not Richard vere Compton is it?
[16:24] <daveake> http://habhub.org/zeusbot/logs_highlighted/highaltitude.log.20130529.html
[16:24] <daveake> ^^ that name appears there :)
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[16:30] Nick change: HixWork_ -> HixWork
[16:30] <HixWork> daveake, didi the link you posted have a ref to the madman? WEb cut out at work
[16:32] <HixWork> hah its the one and only XD
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[16:33] <ibanezmatt13> In C, what's the difference between definining variable 'a' and definining variable '*a' ?
[16:33] <ibanezmatt13> does the * have some significance?
[16:33] <ibanezmatt13> Does it show the type of variable or something?
[16:33] <mattbrejza> read up on pointers
[16:33] <mattbrejza> must be lots of tutorials
[16:34] <ibanezmatt13> oh that's a pointer is it. Everybody says how people switch off C when they get to pointers
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[16:34] <ibanezmatt13> It's something like creating space in the memory for the variable or something. I'll read it up later
[16:34] <mattbrejza> the concept is quite simple, but the syntax doesnt help beginners
[16:34] <ibanezmatt13> Got to go now, bye :)
[16:35] <ibanezmatt13> I'll read it later, I have a good guide. Thanks! :)
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[16:35] <mattbrejza> it isnt too different to just using a variable to index an array
[16:35] <mattbrejza> too slow....
[16:36] <daveake> HixWork Yes eroomde mentioned him
[16:37] <HixWork> ibanezmatt13 https://www.youtube.com/watch?v=Rxvv9krECNw
[16:37] <HixWork> oh pants he's gone
[16:38] <HixWork> daveake, he just called my lead engineer. I'll speak to ed tomorrow to compare notes on nuts
[16:38] <HixWork> for now, I'm orf.
[16:39] <Willdude123> Where might I find the document that describes the prohibition of broadcasting on ham radio?
[16:39] <mattbrejza> at altitude or generally?
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[16:42] <Willdude123> Generally
[16:42] <mattbrejza> just the general law that you cant fire up a transmitter wherever you feel
[16:49] <mfa298> Willdude123: In terms of amateur radio the rules are generally that it's to be used for experimentation, emergency comms and some personal use. And that in general communications have to be addressed to another licensed operator or group of operators. It's all in the terms of the licese which you can find online
[16:50] <Willdude123> Oh. I couldn't find a mention of broadcasting in the terms.
[16:50] <mfa298> Willdude123: these are the Amateur radio license terms http://licensing.ofcom.org.uk/binaries/spectrum/amateur-radio/guidance-for-licensees/samplelicence07.pdf
[16:50] <mfa298> that's because in general broadcasting to everyone isn't permitted apart from a few specific cases.
[16:53] <Willdude123> SO basically it's gotta be on topic.
[16:53] <Willdude123> ?
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[16:55] <mfa298> read through 1. Purpose as that gives an idea of whats allowed
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[17:01] <Willdude123> http://licensing.ofcom.org.uk/binaries/spectrum/amateur-radio/guidance-for-licensees/samplelicence07.pdf
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[17:02] <chrisstubbs> One day we will find out why Willdude123 reposts all the links he gets sent :P
[17:02] <Willdude123> PuTTY
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[17:02] <chrisstubbs> pastes when it copies?
[17:02] <Willdude123> 13:02 < chrisstubbs> One day we will find out why Willdude123 reposts all the links he gets sent :P
[17:02] <mfa298> Willdude123: there is an option in putty to change from right click paste to middle click paste which might help you
[17:02] <Willdude123> :P
[17:03] <chrisstubbs> Ah right okay makes sense
[17:03] <Willdude123> Yep but I have no middle click.
[17:03] <mfa298> by default putty is copy on select and paste on right click
[17:03] <Willdude123> Orly
[17:03] <mfa298> middle click is often emulated by pressing both buttons together
[17:03] <Willdude123> i don't have to right click.
[17:03] <Willdude123> Heh
[17:04] <mfa298> I suspect you're dragging over some text to select it and then doing the windows thing of right clicking to select copy
[17:04] <mfa298> putty does the traditional unix thing of copying the text as soon as it's highlited
[17:06] <mfa298> and the other traditional unix thing is to paste on a right click (although not all linux window managers seem to follow that tradition)
[17:07] <Willdude123> 13:06 -!- djlewis [~djlewis@adsl-65-64-30-13.dsl.ltrkar.swbell.net] has joined ##hamradio
[17:07] Last message repeated 1 time(s).
[17:07] <Willdude123> Haha
[17:07] <Willdude123> Sorry
[17:09] <craag> Willdude123: You pinged me?
[17:12] <craag> Ah, websdr isn't set up at the moment (I've just moved house)
[17:12] <craag> But, to the top of the hill, so when it is... it'll be better!
[17:12] <craag> Not til after this weekend though, got a rather large event on :P
[17:13] <mfa298> craag: I had also mentioned you earlier as G0TDJ_Steve was asking about ground based APRS from a pi which sounded very similar to stuff you've done
[17:14] <craag> Oh yeah he emailed me.
[17:14] <craag> He basically wants to do what I had set up last year :P
[17:15] <mfa298> I couldn't remember if you'de gone as far as a pi but I know you'de done it on a netbook
[17:15] <craag> Yeah last summer I had a fully-fledged digipeater running on the pi in the back of my car.
[17:16] <craag> Got a couple of email from people 'telling' me I'd got it wrong, because digipeaters are too big and heavy to have mobile :P
[17:16] <mfa298> lol
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[17:21] <HixPad> eroomde: You about?.
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[17:32] <Willdude123> craag: Will I see you at the VHF field day? I know you'll be there, but how many others will be?
[17:33] <Willdude123> I'm the tallish blondish fat kid,
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[17:33] <craag> Willdude123: 6-7 others I hope.
[17:33] <craag> I'll be the one in the shirt that says 'craag' on the back.
[17:33] <Willdude123> haha
[17:34] <craag> And if you're there on sunday I'll probably be the one that smells the worst.
[17:36] <craag> I'm hoping to have a live webcam feed set up
[17:36] <craag> And we'll have a local irc server as well :P
[17:37] <craag> mfa298: We've found an ideal operating tent: http://www.firebox.com/product/5441/London-Underground-Tube-Tent
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[17:38] <Willdude123> Haha cool.
[17:39] <Willdude123> YOu gonna use that craag?
[17:39] <SpeedEvil> :)
[17:39] <craag> lol no, we're students, we don't have money!
[17:39] <mfa298> nice
[17:39] <craag> A fair few of our club are also train fans though..
[17:40] <craag> A couple of them recently attempted the tube challenge
[17:40] <Willdude123> Oh yeah what is being a University student like?
[17:40] <SpeedEvil> Does the tube challenge involve a bag of water and a greased nozzle?
[17:41] <craag> SpeedEvil: errrr no.
[17:41] <mfa298> Could be a challenge talking about that tent at the club meeting
[17:41] <craag> (subsequently 'train' is a banned word at all meetings and pub trips)
[17:42] <craag> (leading to many conversations about 'land ferries')
[17:42] <Willdude123> craag: Do you live in student housing?
[17:42] <SpeedEvil> Ships of the rails.
[17:43] <Willdude123> I went to one of my dad's friends living space to help pack everything/
[17:43] <Willdude123> It was a cramped room. With an iMac that barely fitted in the room, and 2 or 3 megan fox posters.
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[17:44] <craag> Willdude123: No, southampton uni just had halls for first year when I started.
[17:44] <craag> I live in a house with 3 others.
[17:46] <craag> Well it's a student house, but a private one rather than uni-organised if that's what you mean.
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[17:48] <craag> But yes, being cramped into one room is a bit of an experience, especially for an electronics student with rather a lot of kit!
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[17:55] <Babs_> Good evening HAB-fans
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[17:59] <LeoBodnar> Hi Babs_
[18:00] <Babs_> LeoBodnar, are you this Leobodnar? http://www.leobodnar.com/
[18:00] <LeoBodnar> Yes, I am him.
[18:02] <Babs_> Awesome. Loads of interesting stuff on there including some F1 sim stuff by the look of it.
[18:02] <mfa298> Uni hall rooms were even more fun before flat screen monitors and portable computers looked like http://www.ebay.co.uk/itm/370835442085
[18:03] <Babs_> mfa298 - i remember playing head to head doom in a mates room. we basically had room for two 17" cathode rays and very little else they were that big
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[18:03] <LeoBodnar> Yes, a sort of "work" while HABing is a sort of new hobby.
[18:03] <LeoBodnar> Doom II?
[18:03] <Babs_> may have been doom II
[18:04] <Babs_> have you launched yet LeoBodnar?
[18:04] <LeoBodnar> 17" was very posh at the time! 14" was a standard size
[18:04] <LeoBodnar> VGA
[18:04] <Babs_> My mate was loaded
[18:04] <Babs_> lucky him
[18:04] <LeoBodnar> 17" was MASSIVE! and expensive
[18:05] <mfa298> when I was in halls I think I had a 15" screen
[18:05] <mfa298> I got (and still have) a 19" flatscreen crt
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[18:06] <mfa298> maybe I should take a picture of it compared to the 22" LED flatscreen
[18:07] <LeoBodnar> cool, reminded me of portable Compaq with plasma screen.
[18:08] <mfa298> I think when I was in halls we were playing redalert, quake and starcraft
[18:09] <Willdude123> craag: How might I go about setting up a websdr?
[18:09] <LeoBodnar> http://en.wikipedia.org/wiki/Compaq_Portable_386 portable means that one person can carry it
[18:09] <Babs_> My former boss remembers one CEO that he dealt with was the first person to have a mobile phone. Get this, they employed a person whose sole job it was to carry it for him it was that large.
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[18:10] <ibanezmatt13> ping Upu
[18:10] <fsphil> I'm guessing it wasn't called a mobile phone back then
[18:10] <mfa298> Willdude123: there's not much point trying to setup an SDR until you've got a setup that can recieve useful radio signals
[18:10] <LeoBodnar> XD what was the job title? Mobile carrier?
[18:11] <craag> Willdude123: The author of the software isn't handing it out to many people, I only got it because I'm hoping to install one on a uni building.
[18:11] Action: craag afk, have a good evening!
[18:11] <Willdude123> I might do when I get a proper antenna.
[18:11] <Willdude123> craag: Why wouldn't he?
[18:11] <Upu> hey ibanezmatt13
[18:12] <ibanezmatt13> Upu: could you PM?
[18:12] <Willdude123> And how does installing it on a uni building make it any more worthwhile?
[18:12] <Babs_> no clue. I would have liked to see him build a CV out of it.
[18:12] <mfa298> Willdude123: I think the software is part of a Uni research project in the netherlands
[18:12] <Willdude123> Will I need a soundcard for doing PSK?
[18:14] <Willdude123> Or websdr.
[18:14] <Willdude123> Does it need 100% uptime?
[18:14] <mfa298> Willdude123: for what craag is doing he want to get it on a Uni building which means it's in a good location and has good bandwidth (during a flight see how well ASTRA does at recieving payloads as that's also on a Uni building.
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[18:15] <Willdude123> ASTRA?
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[18:15] <mfa298> Recieving PSK is very much like rtty (or most other amateur digital modes)
[18:16] <mfa298> ASTRA is one of the stations that tracks HABs,
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[18:17] <mfa298> and websdr's by their nature tend to need a good internet connection (and not really suitable for adsl). The idea of a websdr is you make your radio available to anyone out on the web that wants to listen to it
[18:18] <fsphil> yes they need quite a bit of outgoing bandwidth
[18:18] <fsphil> or more importantly, low latency
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[18:19] <zyp> why low? as long as it's consistent (i.e. low jitter), why does it matter?
[18:19] <mfa298> possibly more accurately low jitter, although low latency will improve the user experience
[18:21] <fsphil> yep. nice when tuning
[18:21] <LeoBodnar> does websdr send a small slice of received bandwidth?
[18:22] <eroomde> HixWork: i am about now super briefly
[18:22] <eroomde> about to go home
[18:22] <fsphil> the current websdrs have nice low response times
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[18:22] <mfa298> LeoBodnar: usually one of them would take out most peoples adsl if it sent the whole bandwidth it's running
[18:23] <mfa298> LeoBodnar: unfortunately only does HF but this is one of the nice websdrs http://websdr.ewi.utwente.nl:8901/
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[18:24] <LeoBodnar> I don't think you can even send the whole b/w? Say 1MHz wide @ 8 bit x 2 phases that's 16mbps
[18:25] <fsphil> it sends the demodulated audio
[18:25] <LeoBodnar> Ah, so only 2-3kHz bw?
[18:25] <fsphil> yep. and the waterfall data
[18:25] <mfa298> yes, sorry realised my answer wasn't that useful
[18:25] <LeoBodnar> K
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[18:26] <mfa298> the one I just linked to covers 0-30MHz
[18:26] <fsphil> I wish I had low enough noise to be able to do that :)
[18:26] <LeoBodnar> So are there any that can be used on 434MHz?
[18:27] <mfa298> there's a few globaltuners that can be tuned up there but on the eurpoean flights people havn't had much hope of them
[18:27] <fsphil> there was one a while back, but it was for EME -- aimed at the moon
[18:27] <mfa298> craag is hoping to get one setup on a uni building that can do 434Mhz
[18:28] <LeoBodnar> do they usually have omni antennas?
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[18:29] <fsphil> omni would certainly be more useful
[18:29] <Willdude123> I just had a frightening vision of my aerial mast snapping, my aerial falling off, and smashing my parent's cars.
[18:29] <mfa298> not sure, For the ones on global tuners I think several have antennas designed more for HF or whatever the person running it is interested in.
[18:30] <fsphil> I could probably setup one here for 70cm but it wouldn't be all that useful
[18:30] <Willdude123> I doubt that would happen.
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[18:30] <Lunar_Lander> hello
[18:31] <LeoBodnar> I see, so setup probably follows owner's personal interests.
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[18:31] <fsphil> definitly
[18:32] <mfa298> Willdude123: if an antenna it put up properly then it shouldn't come down but you need to get decent parts and have someone that knows about putting such things up doing it.
[18:32] <LeoBodnar> fair deuce
[18:32] <mfa298> there's a whole load of things you can get wrong which makes what you've done weaker - so more liable to come down
[18:33] <Willdude123> I can't afford to get someone to put it up.
[18:33] <Willdude123> All I can afford is the Wall Bracket and the Mast and the aerial/
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[18:34] <ibanezmatt13> Evening S_Mark
[18:34] <LeoBodnar> Willdude123: what antennas do you currently use?
[18:34] <Willdude123> So I'll have to get my dad to help me roof mount it.
[18:34] <Willdude123> Looking to get a W-2000 triband
[18:35] <chrisstubbs> Willdude123, if you dont like the idea of the antenna coming down and smashing things, get 2 wall mounts
[18:35] <mfa298> Willdude123: the other thing to consider is that if you get someone else to put the antenna up they will potentially have insurance to cover things if it came down due to being done badly (something you'd need to check with them)
[18:35] <Willdude123> yeah I'll get 2
[18:35] <Willdude123> Still not sure I can afford to get someone to put it up.
[18:35] <LeoBodnar> It's probably good idea to start from something that does not require mast/roof mounting as this is pretty permanent if done properly
[18:36] <Willdude123> Well I can't put it in the garden.
[18:36] <Willdude123> Not enough height.
[18:36] <mfa298> Willdude123: I'd check whether you're dad is happy to put it up. If he doesn't know how to do it safely then you need to get someone who does. There are a lot of things you need to be aware of (like which bricks you shouldn't use, what parts of a brick are strongest)
[18:37] <LeoBodnar> There's never enough hight whomever you ask!
[18:38] <LeoBodnar> Consider lightning strike possibility as well.
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[18:41] <Willdude123> of course.
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[18:42] <Willdude123> Doh.
[18:42] <Willdude123> Microsoft Comic Chat FTW!
[18:43] <Willdude123> Might have to run it on an XP vm.
[18:43] <mfa298> Keep that well away from most IRC channels unless you're wanting to get banned.
[18:44] <Willdude123> Why?
[18:44] <Willdude123> Does it comm not in plain english?
[18:45] Nick change: KyleYankan -> MattJohsnon
[18:45] <mfa298> you get a load of extra bits on the channel which doesn't show up in the comic chat window.
[18:46] <Willdude123> Heh
[18:46] Nick change: MattJohsnon -> KyleYankan
[18:46] <Willdude123> It crashes as soon as I try joining anything.
[18:46] <mfa298> I've done IRC with comic chat on a private irc server before and whilst it's fun, the channel for anyone using a normal client isn't so pleasant
[18:47] <Willdude123> Yeah
[18:47] <Willdude123> I'll try it in a private chan.
[18:47] <Willdude123> It's retro.
[18:47] <Lunar_Lander> mfa298, you mean like formatting symbols and stuff?
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[18:49] <mfa298> Lunar_Lander: I think so, it's been a while since I tried it, I just remember the channel becoming pretty much unreadable
[18:50] <Lunar_Lander> yeah
[18:50] <Willdude123> [14:45] [Willdude123(+i)] [3:Freenode/#highaltitude(+cnt)] [Act: 2,4,5,6]
[18:51] <Willdude123> heh
[18:51] <Lunar_Lander> btw I solved the DS18B20 problem
[18:51] <Willdude123> I think freenode kicks people using it.
[18:51] <bertrik> Lunar_Lander: so what was the problem?
[18:52] <ibanezmatt13> Trying to understand pointers, I've read this 3 times: http://pw1.netcom.com/~tjensen/ptr/ch1x.htm I think I understand them a little more, but I can't understand why they're used. Why are they so helpful? Why not just define the variable?
[18:53] <mfa298> ibanezmatt13: they become particularly useful when you don't know how much memory you'll need
[18:53] <ibanezmatt13> why do you need to know that?
[18:54] <mfa298> C works at a lower level than something like python, meaning you need to allocate the space required.
[18:54] <ibanezmatt13> Does that not happen when I int c;
[18:54] <Willdude123> Any other retro XP only programs I can try on this VM?
[18:55] <mfa298> so instead of having a string you have an array of characters e.g: char s[80];
[18:55] <Lunar_Lander> bertrik, http://s.gullipics.com/image/0/n/1/ji1rd83-kstgzj-zy7p/Graph2.png
[18:55] <Lunar_Lander> just swapped the sensors
[18:55] <Lunar_Lander> probably the one I used was faulty
[18:56] <ibanezmatt13> Hmm...
[18:56] <bertrik> hm, odd
[18:56] <mfa298> that array is limited to 80 characters and always allocates that much memory. so instead you can specify it as a pointer and then allocate memory at runtime for the space you need.
[18:56] <Willdude123> Getting a windows 3.0 vm.
[18:57] <mfa298> pointers are also useful with functions if you want to get several bits of data in return as you can tell the function to update a bit of memory at a particular address.
[18:57] <bertrik> Lunar_Lander: so apparently, you can't just pick up a ds18b20 a rely on it working normally without testing it first
[18:57] <Lunar_Lander> yea
[18:57] <bertrik> also, now the HIH-6121 seems to be the odd one out
[18:57] <Lunar_Lander> or I broke it on soldering
[18:57] <Lunar_Lander> or so
[18:57] <ibanezmatt13> My high level programming experience really has destroyed my brain for pointers
[18:58] <ibanezmatt13> Just have to switch computers, 5 mins
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[18:58] <Lunar_Lander> because it drops down so fast?
[18:58] <mfa298> ibanezmatt13: they'll suddenly click and you'll realise they're not that difficult.
[18:58] <mfa298> and he left ...
[18:59] <bertrik> no, because it's about 5 to 6 degrees different from the ds18b20 and bmp85
[18:59] <bertrik> hm, or would the other curves eventually drop to the same level as the hih?
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[19:00] <ibanezmatt13> back
[19:01] <mfa298> I'll repeat myself then...
[19:01] <mfa298> ibanezmatt13: they'll suddenly click and you'll realise they're not that difficult.
[19:01] <ibanezmatt13> That's what's happened with everything else :)
[19:02] <mfa298> it took me a while to get to grips with how they work (and I think that's probably true of most people when learning C)
[19:02] <ibanezmatt13> Especially when coming from Python :P
[19:03] <ibanezmatt13> I'll see if there are any videos on Youtube, I seem to learn well from visual things
[19:03] <mfa298> python and most languages at that level hide quite a lot from you.
[19:03] <ibanezmatt13> Yeah, I must say, they're good for teaching the basics of programming with the syntax (in my opinion anyway)
[19:04] <ibanezmatt13> After consolidating my understanding of what loops functions classes actually are, looking at C code is a whole lot easier. In fact, I've learned more about programming on here than anywhere else
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[19:05] Action: mfa298 wonders if we need a highaltitude-programming channel
[19:05] <ibanezmatt13> In many ways, I wish I'd have known more about how computers work before I started programming
[19:05] <daveake> I came to C after assembly. C is basically "Assembler made easy" so concepts such as pointers are very obvious
[19:05] <ibanezmatt13> I think transitioning from low level to higher level is FAR easier than vice versa
[19:06] <ibanezmatt13> Until 5 minutes ago, to be a variable was just simply a variable
[19:06] <ibanezmatt13> A variable to me now is... void knowledge()
[19:07] <mfa298> although going from low level to higher level can also be annoying, especially when the language things you want to do something different to what you want - there's been times that I want something as a 32bit unsigned integer as I can do clever manipulation (IP addresses)
[19:08] <ibanezmatt13> I'm sure there is, but if you understand how the computer operates, that really helps your understanding of operations within a program
[19:08] <ibanezmatt13> I only found out that chips contained gates this week!
[19:09] <ibanezmatt13> Just out of curiosity, what language is Linux based on?
[19:09] <ibanezmatt13> C?
[19:10] <mfa298> mostly a mixture of C and C++ these days I think
[19:10] <ibanezmatt13> ah ok.
[19:10] <ibanezmatt13> Yeah, I love learning about how things like pointers work and why they're useful, it's just hard trying to understand. I'll get it some day
[19:10] <ibanezmatt13> brb
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[19:13] <Willdude123> If I ever get bored and have too much money, remind me to order something from maplin and use their shutl thing to get it delivered within 90 minutes.
[19:14] <Willdude123> Sounds so cool.
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[19:15] <eroomde> Willdude123: that is cool
[19:16] <eroomde> if only a decent electronics shop offered that service
[19:16] <Willdude123> Haha
[19:16] <Willdude123> Maplin is OKish.
[19:17] <ibanezmatt13> It's shockiong
[19:17] <ibanezmatt13> I'm not even going to correct myself
[19:17] <Willdude123> Why?
[19:17] <ibanezmatt13> The level of incompetence I've had to deal with in several stores is unbelieveable
[19:17] <ibanezmatt13> Firstly they can't operate the phone
[19:18] <Willdude123> heh
[19:18] <ibanezmatt13> By that I mean in the one near me, I had to get the phone working so they could ring someone
[19:18] <Willdude123> Heh
[19:18] <ibanezmatt13> Didn't know how to unlock keypad
[19:18] <ibanezmatt13> Another time, I was telling him my details and he put me down as a Mrs!
[19:18] <mfa298> ignoring their competance or otherwise, they tend to be more expensive and have a limited range. rs/farnell/rapid etc. are much better.
[19:18] <ibanezmatt13> and that ^^
[19:19] <Willdude123> There is no RS or farnell near me.
[19:19] <eroomde> their range is about 1000000th the range of farnell and rs
[19:19] <eroomde> and their prices are crazy
[19:19] <eroomde> £1 for a 555
[19:19] <eroomde> cry havoc
[19:19] <mfa298> rs/farnell are online shops.
[19:19] <Upu> Maplins ? Rubbish.
[19:19] <Upu> just a tat shop now
[19:19] <eroomde> mfa298: they have depots
[19:19] <eroomde> places of dreams
[19:20] <mfa298> eroomde: true, although not as easy to find as a maplin
[19:21] <mfa298> there is an RS trade counter one junction down the motorway from me - although I've not use it yet
[19:21] <eroomde> sometimes when you really need a 3.5mm to 6.5mm jack for a balloon launch RIGHT NOW they are OK
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[19:22] <mfa298> yup, I tend to use maplin for the odd bit I need quickly (2 of them within 3 miles)
[19:23] <eroomde> but nowadays i test-run everything the day before
[19:23] <eroomde> so i can do an rs/farnell if something is missing
[19:23] <LeoBodnar> I think primary school kids needs to be taught assembly
[19:23] <eroomde> it's easier
[19:23] <eroomde> especially on simple micros
[19:24] <eroomde> pointers becomes obvious, you don't have to worry too much about concepts obfuscated by odd syntax
[19:24] <Willdude123> LeoBodnar: We had assembly every day.
[19:25] <eroomde> badum ching
[19:25] <Willdude123> Would they be OK for this http://www.maplin.co.uk/large-tandk-wall-bracket-914 ?
[19:26] <Willdude123> What does T and K stand for?
[19:26] <mfa298> they're named after their shape.
[19:27] <mfa298> Willdude123: you might struggle to find any store that's actually selling them
[19:27] <Willdude123> Maplin does.
[19:27] <mfa298> have a look at their stock levels
[19:28] <mfa298> I just tried three areas, all stores in those areas report 0 in stock
[19:28] <Willdude123> A shit.
[19:28] <Willdude123> *ah
[19:28] <Willdude123> Lol
[19:29] <Willdude123> Sorry
[19:29] <Willdude123> I guess I could get them to order them?
[19:29] <mfa298> have you talked to your parents to see if they're happy to do the work themselves ?
[19:30] <Willdude123> Not yet.
[19:31] <mfa298> it might be worth doing that first, if not you might be looking for a professional installer at which poing they might have a better place to source them from - and ones that they know to be a good brand.
[19:31] <mfa298> With cheap options you tend to pay for it in the end by things failing
[19:32] <Willdude123> Geez.
[19:32] <Willdude123> http://cpc.farnell.com/jsp/search/productdetail.jsp?sku=AP02290
[19:32] <Willdude123> That's expensive.
[19:33] <ibanezmatt13> I watched a great video on using I2C earlier. I'm gonna wait til the Uno arrives before I start using it properly. If I do it on the Pi, I'll end up confusing the two wire libraries, they're so different
[19:33] <mfa298> if you look at the maplin one it was £19 reduced by £14
[19:34] <mfa298> I suspect the maplin on is end of line so they're trying to get rid of any remaining ones
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[19:37] <mattbrejza> P
[19:37] <mattbrejza> hmm oops
[19:38] <ibanezmatt13> Just to clarify, is the FTDI cable for use when debugging with a standalone ATMEGA328?
[19:42] <ibanezmatt13> ping chrisstubbs
[19:42] <chrisstubbs> hello
[19:46] <Upu> ping LeoBodnar
[19:46] <LeoBodnar> Here Upu
[19:46] <Upu> PM
[19:47] <eroomde> hello Upu
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[19:51] <Upu> evening Ed :)
[19:51] <Lunar_Lander> hi Upu
[19:51] <eroomde> hi Lunar_Lander
[19:51] <Lunar_Lander> bertrik, sorry for not responding
[19:51] <Lunar_Lander> hi eroomde
[19:53] <Lunar_Lander> bertrik, in the earlier tests the DS18B20 stayed around -2°C as said, the HIH-6121 went as far down as -20°C and the BMP085 got down to about -15°C
[19:54] <Lunar_Lander> the BMP085 is soldered onto the board while the other sensors are at the end of wires and all that was in a plastic bag in the freezer
[19:56] <daveake> hi Lunar_Lander
[19:56] <daveake> hello Upu
[19:57] <daveake> 'allo eroomde
[19:57] <Lunar_Lander> evening dave
[19:58] <Upu> hi Dave how are you ?
[19:58] <number10> fine
[19:58] <daveake> lol
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[19:59] <Lunar_Lander> xD
[20:02] <Lunar_Lander> OK seems like I have a DS18B20 that just stops below -2°C
[20:02] <fsphil> I would too
[20:03] <eroomde> a bit like humans
[20:03] <daveake> So it works to a degree
[20:03] <number10> or 2
[20:04] <Lunar_Lander> hm
[20:04] <Lunar_Lander> this is supposed to be a woman http://www.rtl.de/cms/sendungen/show/wild-girls/kandidatinnen/wild-girls-kandidatin-conchita-wurst-2eee4-b8e7-16-1516790.html
[20:04] <Lunar_Lander> XD
[20:05] <fsphil> this is a hot topic
[20:05] <eroomde> growing up can be confusing Lunar_Lander
[20:05] <eroomde> just follow your heart and be true to yourself
[20:06] <Lunar_Lander> XD
[20:09] <daveake> Yeah what's the wurst that could happen?
[20:09] <Lunar_Lander> :P
[20:09] <Lunar_Lander> btw you are becoming a star in germany dave
[20:09] <mfa298> maybe she got a HAM license so is growing a beard to fit in
[20:09] <fsphil> brat?
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[20:11] <LeoBodnar_> Lost WiFi temporarily
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[20:13] Nick change: LeoBodnar_ -> LeoBodnar
[20:14] <LeoBodnar> Upu: sorry, wifi dropped off
[20:14] <Upu> nps
[20:15] <LeoBodnar> How does the server tell dl-fldigi to configure the modem settings?
[20:16] <Upu> payload docs
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[20:17] <LeoBodnar> Is there any way of forcing FEC onto Domino mode?
[20:19] <Upu> I don't know how its implemeted
[20:20] <Upu> maybe look at the source code of dl-fldigi
[20:20] <Upu> or fsphil may know
[20:20] <LeoBodnar> I will. Unfortunately it drops the rx rate in half.
[20:22] <ibanezmatt13> daveake, with my Ublox Max 6, NTX2, Pi model A, and Pi Cam, with 6 energizer lithium AA's, roughly, what flight time will I have before the SMPSU drops out?
[20:24] <ibanezmatt13> Would 4 hours be optimistic?
[20:24] <Upu> you need to measure it
[20:25] <ibanezmatt13> I can't measure it yet though :/ And I'm looking into helium and balloons
[20:25] <ibanezmatt13> How long is decent usually?
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[20:26] <ibanezmatt13> Or more appropriately, how much quicker than accent usually is decent?
[20:26] <eroomde> 2hrs/45mins
[20:26] <SpeedEvil> Descent often starts with a phase at well over 30m/s
[20:27] <daveake> ibanezmatt13, measure it
[20:27] <ibanezmatt13> I think Sratodean went down at over 50m/s initially.
[20:27] <ibanezmatt13> daveake, will do
[20:28] <ibanezmatt13> eroomde, 2 hours accent, 45 mins decent?
[20:28] <ibanezmatt13> of course not for my payload
[20:28] <Upu> make it run for 6-8 hours
[20:28] <daveake> should be 20 hours btw :)
[20:28] <ibanezmatt13> I think now that I've got the Pi running off 3v3 that would be feasible
[20:28] <ibanezmatt13> 20!
[20:29] <ibanezmatt13> In other words, I should have sufficient power for my flight :(
[20:29] <ibanezmatt13> :)
[20:29] <daveake> yup
[20:29] <daveake> but
[20:29] <daveake> measure it!
[20:29] <ibanezmatt13> But I'll test it anyway
[20:29] <ibanezmatt13> yep
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[20:29] <daveake> costs £6 to test. Bargain
[20:30] <ibanezmatt13> :)
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[20:31] <ibanezmatt13> So if I aimed for 180 mins accent, would that be a good idea?
[20:31] <ibanezmatt13> initially
[20:31] <ibanezmatt13> flight time should be not much more than 4 hours
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[20:32] <daveake> no
[20:32] <griffonbot> Received email: Kristaps "[UKHAS] Launch announcement - LAASE-1 - July 6, 2013"
[20:32] <daveake> Aim for 5m/s ascent
[20:32] <daveake> and whatever time that works out at
[20:32] <ibanezmatt13> right, ok
[20:33] <ibanezmatt13> just over 37km in 115mins
[20:33] <daveake> it'll be 90-120 mins probably
[20:33] <ibanezmatt13> yep
[20:33] <daveake> well depends on balloon size etc
[20:33] <ibanezmatt13> I'm considering a 1600
[20:33] <Upu> use a smaller one
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[20:34] <ibanezmatt13> 1200?
[20:34] <Upu> yeah
[20:34] <ibanezmatt13> could I get away with 4.5m/s?
[20:34] <ibanezmatt13> 120 mins accent
[20:35] <daveake> aim for 5 don't risk a float
[20:35] <ibanezmatt13> ok
[20:36] <ibanezmatt13> 33.6km 103mins
[20:36] <ibanezmatt13> 3.09m3 helium
[20:36] <daveake> OK that's 1 medium cylinder with a bit of spare
[20:37] <ibanezmatt13> On the calculator, the target accent rate I set is different from the actual accent rate
[20:37] <ibanezmatt13> Which should I base it off
[20:37] <ibanezmatt13> Entering 4.7 gives me 5.04 at the bottom
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[20:39] <eroomde> ?
[20:40] <ibanezmatt13> try it http://www.cusf.co.uk/calc/
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[20:45] <eroomde> oh i c
[20:45] <eroomde> i think it's just does a numberical optimisation
[20:45] <eroomde> and stops when it thinks it's close enough
[20:45] <eroomde> dunno really could check the source
[20:46] <ibanezmatt13> So should I base it on the bottom accent rate or the target one
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[20:47] <ibanezmatt13> Putting in a target alt of 34km results in an accent rate of 5.4
[20:47] <eroomde> use the numbers in the results box
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[20:48] <ibanezmatt13> putting 5.4 in the target rate only gives 33137. Yes, I'll use those
[20:48] <ibanezmatt13> Yes putting in 5.4 results in 6.2
[20:48] <ibanezmatt13> 6.02 sorry
[20:49] <griffonbot> Received email: John Underwood "[UKHAS] ... and you think you have payload recovery problems ...."
[20:52] <Willdude123> Hi
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[21:00] <Willdude123> fsphil: How exactly did you do ip over packet radio?
[21:00] <db_g6gzh> linux kernel supports it Willdude123
[21:01] <Willdude123> But how? With what hardware?
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[21:04] <db_g6gzh> I used external TNCs when I ran it but you can used a soundcard as the modem (at least at the usual 1200 baud)
[21:05] <Willdude123> Do you need a server? If that's the word?
[21:05] <db_g6gzh> Depends what you mean. What are you expecting to be able to do?
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[21:06] <db_g6gzh> Packet radio activity seems to have mostly died out apart from APRS
[21:06] <mfa298> I'm not sure many people use packet now apart from for APRS
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[21:06] <db_g6gzh> smap 8-)
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[21:06] <mfa298> remember dialup is many times faster than packet
[21:07] <db_g6gzh> snap I mean
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[21:07] <mfa298> great minds (or so they say)
[21:07] <Willdude123> get on the internet. But yeah it'd be very slow speeds.
[21:07] <db_g6gzh> watching the trace screen at 1200 baud was a good way of learning the protocols though
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[21:07] <Willdude123> Like even if you have a modem, how do you connect?
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[21:08] <db_g6gzh> Willdude123: you can't really get on the Internet due to licensing restrictions
[21:08] <Willdude123> But fsphil did it.
[21:08] <mfa298> packet used to use things called BBS, they're abit like a forum on the internet.
[21:09] <M6KZT> maybe you can find an active gopher server ;)
[21:09] <mfa298> you'de connect to the local BBS and then some of those were connected together over packet links
[21:09] <db_g6gzh> I don't know what fsphil did, but what you can legally do is very restricted in that respect.
[21:09] <mfa298> so it was a bit like a very slow internet over the radio.
[21:09] <db_g6gzh> I used to run GB7OIP near Cambridge
[21:09] <M6KZT> one of the reasons for packet's demise was the move to 12.5khz channel spacing
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[21:11] <mfa298> I suspect the other reason for packets demise was the likes of freeserve. Why only be able to send messages to other HAMs at 1200baud when you could send an email to anyone at 56000baud
[21:11] <db_g6gzh> M6KZT: yeah, I spent ages converting PMR kit from 12.5kHz to 25kHz back in the day 8-)
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[21:12] <db_g6gzh> what mfa298 says
[21:12] <ibanezmatt13> How much is hydrogen these days
[21:12] <ibanezmatt13> My Dad's words not mine :)
[21:12] <db_g6gzh> All the users of the BBS I ran drifted away once Internet access was readily available
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[21:12] <chrisstubbs> ibanezmatt13, cheap
[21:12] <ibanezmatt13> daveake, where do you get your Hydrogen from
[21:12] <ibanezmatt13> ?
[21:13] <chrisstubbs> But a new face is more expensive if it all goes wrong
[21:13] <daveake> a cylinder
[21:13] <Willdude123> Well. Helium is expensive sometimes.
[21:13] <ibanezmatt13> hmm
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[21:13] <ibanezmatt13> Just slightly!
[21:13] <mfa298> I tied accessing my local BBS once via packet, after 30 minutes I think I'd got the readme document about the bbs, (only a couple of kb)
[21:14] <Willdude123> eh
[21:14] <Willdude123> Heh
[21:14] <db_g6gzh> mfa298: that sounds worse than it should have been
[21:14] <Willdude123> daveake: Didn't you and Upu have a hydrogen vs helium race or something?
[21:14] <daveake> Darkside
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[21:15] <ibanezmatt13> My Dad says that if we follow precautions we should be ok, but I disagree and I said for our first launch, experience is needed for things like that. Is it cheap to get it filled by somebody else (I assume not in case it goes wrong)
[21:15] <mfa298> db_g6gzh: I only had a 5w handy, indoors and a fair distance from the bbs so didn't have a good setup for it.
[21:15] <chrisstubbs> ibanezmatt13, your dad is completley right
[21:15] <mfa298> probably not even 5w as it would have been off the internal battery
[21:15] <db_g6gzh> mfa298: probably lots of collisions
[21:15] <mfa298> that's what i suspect
[21:16] <ibanezmatt13> he is, but I don't trust myself or him. Like me, he's not exactly... practical :)
[21:16] <Willdude123> Why would your hydrogen ignite?
[21:16] <ibanezmatt13> well knowing my luck, it would just decide to ignite
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[21:16] <mfa298> makes for a great demonstration of 10base2 ethernet and collision detection/avoidance
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[21:17] <mfa298> but then (hopefully) no ones running 10base2 these days
[21:17] <ibanezmatt13> Due to the massive price on helium, we're very interested in using Hydrogen, but we're not so keen on the idea of filling it up. Any suggestions?
[21:17] <fsphil> Willdude123: I setup an IRC and HTTP server locally, there was no internet access through that
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[21:18] Action: M6KZT still has cards, coax and terminators for 10base2 in a box somewhere
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[21:19] <db_g6gzh> mfa298: I helped put up a full duplex packet repeeater to help avoid the collision problem, it was a nightmare to get it licensed as it was like a repeater but was for packet data - 2 different groups in RSGB
[21:20] <mfa298> I've used some of the coax and terminators for bits of radio stuff. I think I might even have a bit of AUI kit in a box somewhere
[21:21] <ibanezmatt13> daveake, using the cusf calculator, in the right hand panel, will simply choosing Hydrogen instead of helium be ok for predictions? Do I not need to change the constants such as gas density?
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[21:21] <daveake> just that
[21:22] <ibanezmatt13> My Dad says to me that when he's filling his car up, petrol vapour is as volatile as hydrogen gas. He said "I manage to survive filling my car up" lol
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[21:24] <ibanezmatt13> daveake, is there anywhere in the UK I can get the Hydrogen from, safely?
[21:26] <daveake> BOC, however it's not worth it unless you do several flights - the regulator is expensive
[21:26] Action: M6KZT imagines a large fireball and someone screaming oh the humanity
[21:27] <ibanezmatt13> helium?
[21:27] <Lunar_Lander> ah hydrogen burns with an invisible flame
[21:27] <daveake> If you're doing the flight on your own, use helium. If you're launching with me or Steve or someone else that uses H2, they can provide H2 + cylinder
[21:28] <ibanezmatt13> We're definitely doing it at Cambridge
[21:28] <ibanezmatt13> In August
[21:28] <ibanezmatt13> We'd need a lot of help even with helium, we've never done anything like this before
[21:28] <Willdude123> ibanezmatt13: Can I come along, if my parents maybe let me?
[21:29] <Willdude123> Actually on second thoughts they won't.
[21:29] <ibanezmatt13> You're welcome, but you may return with no face if we go for hydrogen :P
[21:29] <ibanezmatt13> which we probably wont tbh
[21:30] <Willdude123> Why not use H1?
[21:30] <Willdude123> Yeah I won't be allowed.
[21:30] <ibanezmatt13> I think it's because it's diatomic
[21:30] <chrisstubbs> Upu, do you use the same method as steve for foil filling? http://ukhas.org.uk/guides:filling_foil_balloons
[21:30] <ibanezmatt13> H2, as in, two molecules
[21:31] <ibanezmatt13> may be wrong
[21:31] <Upu> yes
[21:31] <ibanezmatt13> I don't think H2 is a brand name anyway
[21:31] <ibanezmatt13> there we go
[21:31] <Upu> but I'm going to just stick the filler in next time
[21:31] <ibanezmatt13> oh
[21:31] <Willdude123> Deutrium.
[21:31] <Lunar_Lander> ibanezmatt13, two atoms, not two molecules
[21:31] <Upu> the PVC tube I think was from a full sized cylinder
[21:31] <Upu> the party cylinder I have has a filler on it
[21:31] <ibanezmatt13> what I meant :)
[21:31] <Lunar_Lander> two atoms = 1 molecule
[21:31] <Lunar_Lander> :)
[21:31] <Willdude123> Ah yes there's 1 Neutron 1 Proton in H1
[21:31] <chrisstubbs> Ah right okay, you using disposable50?
[21:32] <Willdude123> *1 proton 0 neutrons
[21:32] <ibanezmatt13> of course Lunar_Lander, ignore me :)
[21:32] <Willdude123> And 1 and 1 in H2/
[21:32] <ibanezmatt13> that's right Willdude123
[21:33] <Lunar_Lander> yeah
[21:33] <Lunar_Lander> and 1 n and 1 p+ is in D
[21:33] <Lunar_Lander> or 2H1
[21:33] <Lunar_Lander> or Deuterium
[21:33] <Lunar_Lander> :P
[21:34] <ibanezmatt13> I'm worried now, my Dad says we should do Hydrogen :\
[21:34] <chrisstubbs> *may* do a foil launch this weekend to see if i can get the the bottom of my antenna troubles, no boost reg going to have to go with 3 heavy aaa's :(
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[21:36] <Willdude123> Why would it ignite anyway?
[21:36] <Lunar_Lander> hi chrisstubbs :)
[21:36] <chrisstubbs> evening Lunar_Lander
[21:36] <Upu> you got mail ibanezmatt13
[21:36] <ibanezmatt13> daveake, Because we're doing it down at Cambridge, if we arrange it, could we use a Hydrogen regulator already at the site? We could get our own hydrogen
[21:36] <ibanezmatt13> thanks Upu
[21:37] <daveake> Speak to whover is providing the launch site
[21:37] <ibanezmatt13> where can I find that out?
[21:37] <ibanezmatt13> Upu, you got mail :)
[21:38] <Upu> thx :)
[21:39] <ibanezmatt13> daveake, should I get in contact with Steve? Would he be able to sort us out?
[21:40] <Willdude123> ibanezmatt13: You're so lucky you have supportive parents.
[21:40] <daveake> If you want to launch from Steve's site then obviously you *have* to speak to Steve. Ditto CUSF for Churchill.
[21:41] <ibanezmatt13> I didn't realise there was more than one site daveake :/
[21:41] <ibanezmatt13> Are there any you would recomend over others?
[21:41] <daveake> No :)
[21:41] <Willdude123> (My parents aren't)
[21:42] <daveake> Not been to Churchill anyway
[21:42] <ibanezmatt13> Err, I guess seen as Steve seems a popular name, I'll go for that :)
[21:42] <ibanezmatt13> Where can I get his contact details?
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[21:44] <chrisstubbs> ibanezmatt13, http://randomsolutions.co.uk/Random_Aerospace/Contact.html
[21:44] <ibanezmatt13> Thanks
[21:44] <ibanezmatt13> is that steve's place
[21:45] <chrisstubbs> yes
[21:45] <ibanezmatt13> Ok, I'll email him, thanks
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[21:46] <KT5TK_QRL> Today we've had some fun receiving SSR with a RTL stick mounted on a quadcopter. See: http://kt5tk.wordpress.com
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[21:52] <SpeedEvil> :)
[21:53] <chrisstubbs> KT5TK, nice!
[21:53] <Upu> nice KT5TK :)
[21:53] <Upu> random plug but I made a preamp for ADS-B if its of interest
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[21:55] <ibanezmatt13> Email sent to Steve :\
[21:56] <KT5TK_QRL> Upu, yes, we may use such a habamp on the balloon flight, but possibly we'll receive plenty at that altitude already
[21:56] <Upu> well let me know if you want the SAW filters
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[22:04] <S_Mark> Hello, any recommendations of a servo that will work 'up there' and can do proper full 180 degree rotation? I know there are continuous servos out there but looking for standard if I can first.
[22:05] <ibanezmatt13> S_Mark, Futaba do some decent ones I believe
[22:06] <Willdude123> Why do you need a servo??
[22:06] <Upu> S_Mark any servo just clean all the grease out of it
[22:07] <Lunar_Lander> hi S_Mark
[22:07] <Willdude123> I need to set up a better method of irc at school.
[22:07] <S_Mark> OK cool, will check futaba out first, thanks all
[22:08] <S_Mark> Why dont you concentrate on learning at school Willdude123
[22:08] <Willdude123> When people ask me what IRC is I normally just say 'chat rooms that are too nerdy to be called chat rooms'
[22:08] <Willdude123> nothing better to do at lunch.
[22:08] <S_Mark> football?
[22:09] <ibanezmatt13> :)
[22:10] <Willdude123> hah
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[22:11] <Willdude123> If i do football, I mix with a load of f****** bastards.
[22:12] <Willdude123> I'm known as a wikipedo because I made about 2.5k edits on wp a few months ago.
[22:13] <ibanezmatt13> never heard that one before :)
[22:13] <Willdude123> Or physics kid, because of this: º 5:34º 5:34
[22:13] <Willdude123> www.youtube.com/watch?v=vDsLPB4VYAA
[22:14] <Willdude123> oopz
[22:14] <Willdude123> I regret making that video.
[22:14] <SpeedEvil> S_Mark: 'Sail servos' tend to go 360 degrees
[22:14] <Willdude123> oh wait it did post correctly.
[22:15] <Willdude123> I thought it copied wrong.
[22:15] <Willdude123> Sometimes I can't tell if people are being sarcastic about it or not.
[22:16] <ibanezmatt13> nice experiment (not sarcastic) :
[22:16] <ibanezmatt13> :)
[22:16] <Willdude123> heh
[22:16] <S_Mark> Should be easy enough for arduino control SpeedEvil?
[22:16] <Willdude123> Someone mentions it to me almost every day.
[22:18] <Willdude123> I really wish I hadn't done that.
[22:18] <SpeedEvil> S_Mark: Err - what?
[22:18] <S_Mark> Good vid Willdude123, fancy being a teacher in later life?
[22:19] <Willdude123> not really
[22:19] <ibanezmatt13> a professional habbist?
[22:19] <Willdude123> I fancy not having a later life.
[22:21] <S_Mark> ignore me SpeedEvil!
[22:21] <S_Mark> lol
[22:21] <Lunar_Lander> Willdude123, also made a physics tutorial once
[22:21] <Lunar_Lander> xD
[22:21] <Lunar_Lander> https://www.youtube.com/watch?v=N2PyJehW2Mc
[22:22] <S_Mark> hahaha
[22:22] <mfa298> wow, I don't think I did simple harmonic motion until A-Levels
[22:22] <S_Mark> oops wrong box!
[22:22] <S_Mark> lol
[22:22] <S_Mark> stupid alt tab
[22:23] <Willdude123> Lunar_Lander you habe such a cool voice.
[22:23] <Lunar_Lander> thanks :)
[22:24] <Lunar_Lander> btw may I correct? centralpetal force acts inward
[22:24] <Lunar_Lander> it's the reason that satellites orbit for example
[22:24] <S_Mark> good vid Lunar_Lander
[22:25] <SpeedEvil> http://xkcd.com/123/
[22:25] <SpeedEvil> If you get confused about the forces.
[22:25] <Lunar_Lander> thanks
[22:25] <Willdude123> ah shit.
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[22:25] <Willdude123> Haven't noticed that.
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[22:26] <Lunar_Lander> no problem :)
[22:26] <Lunar_Lander> btw don't miss out part 2 :)
[22:26] <chrisstubbs> What was the conclusion of the domino flight the other day btw, any better/worse than rtty?
[22:26] <Lunar_Lander> interesting that part 2 has only one quarter of the views of part 1
[22:26] <ibanezmatt13> Lunar_Lander, you have +1 new subscriber
[22:26] <Lunar_Lander> thanks :)
[22:26] <chrisstubbs> I didnt hear a peep from it on the radio :(
[22:27] <Lunar_Lander> unfortunately that camcorder I used is broken
[22:27] <Lunar_Lander> was a cheap xmas present
[22:27] <Lunar_Lander> and it won't start anymore
[22:27] <Lunar_Lander> I will look at how well my canon can record video
[22:27] <Lunar_Lander> but I think the microphone is not that good
[22:27] <Lunar_Lander> but well, let's see :)
[22:28] <ibanezmatt13> Lunar_Lander, I think if you did a tutorial series on Arduino they'd go down very well :)
[22:28] <Lunar_Lander> :)
[22:29] <Lunar_Lander> yeah I think Jeremy Blum has the biggest share of that already
[22:29] <ibanezmatt13> I must say, his videos are good too
[22:30] <ibanezmatt13> Off to bed for me, night all :)
[22:31] <chrisstubbs> same, night!
[22:31] <Lunar_Lander> night
[22:32] <ibanezmatt13> night :)
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[22:40] <Willdude123> Lunar_Lander, please do do not watch the second vun, becauz ze azumptions icht very bad. I did not understand ze small angle approximation.
[22:40] <Willdude123> but
[22:41] <Willdude123> Please vatch ze Mr. Tabourine man icht very good, ya?
[22:41] <Lunar_Lander> xD
[22:41] <Lunar_Lander> I just watched the pendulum
[22:41] <Lunar_Lander> :P
[22:41] <SpeedEvil> https://www.youtube.com/channel/UCivA7_KLKWo43tFcCkFvydw
[22:41] <SpeedEvil> My favourite physics channel
[22:42] <Lunar_Lander> yeah
[22:42] <Lunar_Lander> and I like the prof. from nottingham doing chemistry
[22:44] <Willdude123> Ist very bad. I vill vatch ze transfrormer tutorial Vormittags
[22:44] <Lunar_Lander> :)
[22:44] <Willdude123> Ya.
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[22:46] <Willdude123> I vill not make ze nazi references, but in english today we read ze boy in ze striped pyjamas unt I tries to make ze nazi salute wizout ze teacher notizinf.
[22:47] <Willdude123> But it is ze very emotional book, ya?
[22:48] <Lunar_Lander> oh
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[22:49] <arko> Walter Lewin
[22:49] <arko> from MIT
[22:49] <arko> best physics lectures on the planet
[22:49] <Lunar_Lander> yeah
[22:49] <Lunar_Lander> :)
[22:49] <Willdude123> ya
[22:50] <Willdude123> I vill be doing ze 8.01x in ze autumn and it voll
[22:50] <Willdude123> *vill continue to ze vinter.
[22:50] <Willdude123> ya?
[22:51] <Willdude123> Lunar have you read ze boy in ze striped pyjamas yah?
[22:52] <arko> did will move to germany?
[22:52] <Willdude123> No vill haz not movez to deutchland.
[22:52] <arko> das ist gut
[22:52] <arko> ich liebe deutchland
[22:54] <Lunar_Lander> :)
[22:54] <Lunar_Lander> no we didn't read that book
[22:54] <Willdude123> Guten nighten.
[22:54] <arko> sehr guter engineering
[22:54] <arko> nacht*
[22:54] <Willdude123> It is ze book about ze holocaust.
[22:54] <arko> also gute?
[22:55] <mfa298> I think Willdude123 has been learning german via this method: http://www.ahajokes.com/fp052.html
[22:55] <arko> wait, not that i think about about
[22:55] <arko> i never learned
[22:55] <Willdude123> Blinkenlights ftw
[22:55] <arko> what do germans learn about in history when it comes to 1930-1940?
[22:55] <arko> Lunar_Lander: ?
[22:56] <Lunar_Lander> all about it
[22:56] <Lunar_Lander> almost everything that happened 1933-1945
[22:57] <Willdude123> It is ze good book yah.
[22:57] <Lunar_Lander> ok people
[22:57] <Lunar_Lander> math exam tomorrow
[22:57] <Lunar_Lander> so I have to go to bed now
[22:57] <arko> knock em out
[22:57] <Lunar_Lander> yea :P
[22:57] <arko> gl
[22:57] <Lunar_Lander> thanks :)
[22:58] <Willdude123> It iz about ze child who livez in ze camp, but ze is npt jewish.
[22:58] <Willdude123> *not
[22:58] <Lunar_Lander> ah
[22:58] <Lunar_Lander> good night!
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[22:58] <Willdude123> But vait.
[22:58] <Willdude123> zere is more.
[22:58] <arko> CALL IN ZEH NEXT ZEN MINUTES
[22:59] <Willdude123> Zere is more to ze plot zan zat.
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[00:00] --- Thu Jul 4 2013