highaltitude.log.20130509

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[01:21] <mrShrimp> Upu are you here?
[01:22] <craag> mrShrimp: He's probably asleep.
[01:23] <craag> 2:25am here in the uk.
[01:23] <mrShrimp> OK. If I want to send him a message do I click Upu -> Query ?
[01:23] <mrShrimp> Right
[01:24] <craag> Erm yeah that sounds about right, it should open a new tab/window with just him.
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[07:20] Nick change: chrisstubbs -> chrisstubbswork
[07:20] <chrisstubbswork> Morning!
[07:21] <arko> marnin
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[07:26] <chrisstubbswork> ah brb gotta switch accounts
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[07:32] <chrisstubbswork> arko whats occouring?
[07:32] <arko> nm
[07:32] <arko> working on my lab
[07:32] <fsphil> on or in?
[07:32] <arko> heh
[07:32] <arko> on
[07:32] <arko> i wish in
[07:33] <arko> so much damn time wasted on these assignments
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[07:36] <chrisstubbswork> less work more ballooning
[07:36] <chrisstubbswork> I'm doing spreadsheets (y)
[07:37] <SpeedEvil> do them on waxed paper, tape together and fill with helium
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[08:13] <griffonbot> Received email: Geoff Mather "[UKHAS] Re: UKHAS Conference 2013"
[08:14] <griffonbot> Received email: Ed Moore "Re: [UKHAS] Re: UKHAS Conference 2013"
[08:16] <fsphil> you never join, and can never leave
[08:17] <Geoff-G8DHE_> :-)
[08:19] <Geoff-G8DHE_> Our Video Repeater Group is the same principle, to join you DO, no we don't want money, we don't want meetings, we do it on air!
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[08:20] <costyn> fsphil: :)
[08:21] <gonzo_> meetings are ok, if done in a pub.
[08:21] Action: mfa298 has an image of something like cybermen being created at the conference
[08:22] <gonzo_> cyber men in pink?
[08:22] <gonzo_> disturbing image!
[08:22] <mfa298> I'd go as far as meetings are ok as long as they're kept very short and followed by a trip to the pub.
[08:23] <gonzo_> I don't do london though
[08:23] <Geoff-G8DHE_> Shame, I commuted for 20 odd years, so minimise visits now, but the occasional one is fine!
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[08:30] <griffonbot> Received email: Geoff Mather "Re: [UKHAS] Re: UKHAS Conference 2013"
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[08:45] <mfa298> Not sure how easy it would be to do but how about adding the conference to the ical feed?
[08:46] <chrisstubbswork> sounds like a good idea
[08:46] <chrisstubbswork> failing that, just create a flight doc for it :P
[08:49] <craag> Might as well, we had a balloon on spacenearus to mark it last year :)
[08:51] <gonzo_> a conf-chasecar
[08:53] <gonzo_> I was going to joke, that an rtty beacon on site to help us DF to the venue. But given the current climate, coming off the tube with an arrow ant and radios in pouches.... well....
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[10:34] <x-f> huh, +29C outside
[10:35] <x-f> meanwhile i remember seeing some snow in the forrests last weekend, when i was riding my bike
[10:35] <x-f> what a meteorologically weird first half of the year
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[11:11] <PE2G> Hi all, I'll be tracking the De Bilt (NL) ozone sonde at: http://sondetracker.radiosonda.sk/v2/index.html (launch site: N 52.1 E5.18 )
[11:11] <PE2G> Launch in about 20 min. time
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[11:29] <gonzo_> I recon the wx is due to all this He and H2 being vented into the atmosphere
[11:30] <PE2G> Yeah, all these wx balloon fliigjhts...
[11:35] <PE2G> O3 is up, decoding soon
[11:54] <PE2G> Another monitoring station reports a sonde overhead Londen at 20 km, freq 403.0 MHz
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[11:59] <Geoff-G8DHE_> <PE2G> Which decoder do you use ?
[11:59] <PE2G> SondeMonitor by COAA
[11:59] <Geoff-G8DHE_> OK tks
[12:01] <PE2G> For the tracker feed I use Strack (Sonde Tracker) : http://forum.radiosonda.sk/viewtopic.php?f=22&t=70
[12:02] <PE2G> Bottom of the page has the latest verion with English settings menu
[12:02] <Geoff-G8DHE_> I'll taker a look at that as well. cheers
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[12:13] <fsphil> is it just me or does time actually slow down just before lunch?
[12:14] <Brace> :)
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[12:26] <daveake> Does the "time is an illusion" quote answer that?
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[12:27] <gonzo_> in that case, can you justify a 2hr lunch break?
[12:29] <LazyLeopard> ...and it'll still feel like it only lasted 15 minutes...
[12:34] <gonzo_> time dilation
[12:34] <gonzo_> there must be a singularity nead workloads
[12:34] <gonzo_> near
[12:40] <cuddykid> good place to get swivels for chute from? Checked ebay - lots of different sizes etc - anyone recommend the right size + 'coarse'/'sea' ?!
[12:42] <chrisstubbswork> cuddykid the ones i used were about size 8 looking at a photo
[12:42] <chrisstubbswork> no idea what the difference for coarse/sea is
[12:43] <cuddykid> thanks chrisstubbswork - I'll get some of them :)
[12:43] <chrisstubbswork> the ones with the clips attatched seem a little mor practical for hooking your train together
[12:44] <cuddykid> yep
[12:45] <chrisstubbswork> just stole them from my dads fishing box, they are very cheap on ebay!
[12:46] <cuddykid> ordered some :)
[12:49] <chrisstubbswork> coooooool :)
[12:50] <daveake> yeah they're very cheap
[12:50] <Brace> chrisstubbswork: coarse fishing is inland lake/river (non-game) fishing
[12:50] <Brace> sea fishing is obvious
[12:51] <chrisstubbswork> ah ok that makes sense
[12:51] <chrisstubbswork> guess the sea one have corrosion resistance from the salt?
[12:51] <Brace> sea gear is normally much bigger and stronger as sea fish are much bigger
[12:51] <Brace> yeah
[12:51] <Brace> so I'd go for sea gear if it were me
[12:51] <Brace> something that you'd use for boat fishing for large fish
[12:53] <cuddykid> some very cheap SD cards (at currys! unbelievable) here - http://www.currys.co.uk/gbuk/cameras/accessories/memory-cards-readers/sd-cards/346_3295_31023_0_xx/1_12/price-asc/xx-criteria.html?srcid=369&xtor=AL-1&cmpid=aff~Step-by-step+guides%2C+tips+%26+tricks+for+students~&istCompanyId=bec25c7e-cbcd-460d-81d5-a25372d2e3d7&istItemId=qqpxmxaq&istBid=t
[12:53] <chrisstubbswork> woah thats great
[12:53] <chrisstubbswork> think i will get some of those ;)
[12:54] <Brace> chrisstubbswork: size 2 swivels are rated to 43kgs
[12:54] <Brace> that should be enough?
[12:54] <cuddykid> yeah, one of those things you can never have too many of
[12:54] <Brace> 1kg payload? couple of kg lift?
[12:54] <cuddykid> waiting for 32GB microSD class 10s to come down in price a bit
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[12:57] <Laurenceb> theres 256GB SD cards now
[12:57] <chrisstubbswork_> Sorry, this item is currently unavailable for home delivery ahhhhhh
[12:57] <Laurenceb> no 128GB microsd yet
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[12:59] <chrisstubbswork_> none instore within a reasonable radius either :(
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[13:04] <griffonbot> Received email: "[UKHAS] School project needs some help - Bristol"
[13:08] <gonzo_> (needs to learn to spell!)
[13:09] <mattbrejza> measuring ozone wasnt the easiest thing to start with
[13:09] <daveake> Here's how to help ... https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-ash3/946725_10151428630172654_1856975861_n.jpg
[13:10] <chrisstubbswork_> was that from a teacher at the school?
[13:11] <mattbrejza> well actually i did see some designs for an ozone sensor that was based on ITO deposited on glass slides, but im guessing the school probably wont be able to do that one
[13:16] Action: Darkside is listening to Organ music on LP
[13:16] <Darkside> amazing how much bass you can get from a LP
[13:16] <mattbrejza> none of that compression crap you get on mp3s
[13:16] <mattbrejza> guessing less good at higher freqs
[13:16] <Darkside> heh
[13:16] <Darkside> i'm listening to Bach's Passacaglia & Fugue in C minor
[13:18] <mattbrejza> do any other instruments require so much of the body to play them?
[13:18] <Darkside> heh
[13:19] <Brace> mattbrejza: drums?
[13:19] <mattbrejza> personally i prefered the A minor version, but C minor is still good
[13:19] <gonzo_> (I'm still waiting for the 'organ' puns to start!)
[13:19] <Darkside> mattbrejza: http://www.youtube.com/watch?v=U8EYtirfF4I
[13:19] <Darkside> wait not sure if thats the one
[13:20] <Darkside> http://www.youtube.com/watch?v=m_HdrywerGE
[13:20] <Darkside> that one
[13:20] <Darkside> half the piece is played on the pedals
[13:20] <mattbrejza> i would say the organ requires more body than drums
[13:20] <mattbrejza> you need to use fingers for the organ
[13:20] <mattbrejza> although some people take playing drums to extremes
[13:21] <Darkside> jeez he does a slide on the pedals
[13:21] <Darkside> how the hell
[13:22] <mattbrejza> hmm quite a few things to press on that organ
[13:22] <Darkside> mm
[13:22] <Darkside> shitload of stops
[13:24] <mattbrejza> hmm stops can keep certian pipes open or closed
[13:24] <Darkside> yes, its how you switch voices
[13:25] <mattbrejza> oh there are different groups of pipes
[13:25] <Darkside> often many
[13:25] <Darkside> pipe organs are very complicated beasts
[13:29] <mfa298> can also take a fair bit of strength (depending on how much electro mechanical assistance there is or isn')
[13:30] <SpeedEvil> mattbrejza: ito films on eBay can be inexpensive
[13:30] <mattbrejza> tbh the hardest bit i thought was going to be the calibration
[13:31] <SpeedEvil> http://www.ebay.co.uk/itm/ITO-Indium-Tin-Oxide-Conductive-Glass-Substrate-10-ohm-m2-/151032273526?pt=UK_WSJL_Wholesale_GL&var=450166859485&hash=item232a399a76
[13:31] <SpeedEvil> ah
[13:32] <mattbrejza> http://laspace.lsu.edu/hasp/groups/2008/science_report/Payload_07/HASP_IAC_UND_UNF.PDF
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[13:35] <mattbrejza> the ebay ones arnt 80-300nm
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[13:58] <HixWork> please tell me that wasn't a teacher who was asking about sights near Bristol to launch from
[13:59] <Randomskk> apparently so
[13:59] <Randomskk> who nos nothing
[13:59] <HixWork> jayzus were domed
[13:59] <HixWork> ;p
[14:00] <HixWork> i wonder if there in charge of they're whole year
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[14:01] <fsphil> their*
[14:01] <Randomskk> whoosh?
[14:01] <x-f> sarcasm :>
[14:01] <Laurenceb> i no nothing
[14:02] <HixWork> where fsphil ?
[14:02] Action: fsphil reads the email
[14:02] <gonzo_> I thought someone would sight that example
[14:02] <Laurenceb> we trying read
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[14:03] <HixWork> i red it and thought oh my god, like
[14:03] <fsphil> I am enlitened
[14:04] <HixWork> should have noun better
[14:05] <gonzo_> I would have past on that
[14:06] <HixWork> its a disk race
[14:06] <HixWork> or is that a disc race
[14:06] <Laurenceb> how to join ukhas:
[14:07] <Laurenceb> 1) hang about
[14:07] <Laurenceb> 2) there is no step 2
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[14:07] <gonzo_> 3) take the piss
[14:07] <HixWork> 3) never mention 1)
[14:07] <gonzo_> 5) nahhhh poofters
[14:08] <HixWork> and d) no bad language
[14:08] <Darkside> gonzo_: 6) NAAAAH POOFTERS
[14:08] <Darkside> actually
[14:08] <Darkside> no
[14:08] <Darkside> rule 6 - there is NO rule 6
[14:08] <gonzo_> e) or bad spelling!
[14:08] <Darkside> rule 7 - NO POOFTERS
[14:08] <Laurenceb> lol
[14:09] <Darkside> this here's the wattle the emblem of our land. you can stick it in a bottle or hold it in your hand.
[14:09] Action: Laurenceb sends Darkside to "diversity camp"
[14:09] <Darkside> AMEN
[14:09] <Darkside> Laurenceb: Bruces sketch
[14:09] <HixWork> 8f) it's not $£%^&ing space
[14:09] <Laurenceb> they have reducation
[14:09] <Darkside> http://www.youtube.com/watch?v=_f_p0CgPeyA
[14:09] <fsphil> that's the only rule HixWork
[14:09] <Darkside> Laurenceb: watch that
[14:09] <Laurenceb> its too late for you
[14:10] <HixWork> 10) making enquiries from a lads mag will cause much sniggering and punnage
[14:10] <HixWork> 11) puns only of the most terrible calibre
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[14:11] <HixWork> speaking of which http://i.imgur.com/1qDicFq.jpg
[14:13] <fsphil> what a rip off
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[14:18] <Laurenceb> http://www.pratt.duke.edu/news/brikner-and-lautz-win-national-science-foundation-graduate-research-fellowships
[14:18] <Laurenceb> rage
[14:18] <Laurenceb> why are my ideas always "pre-stolen"
[14:19] <Laurenceb> " Pratt School of Engineering" teeheee
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[14:45] <gonzo_> diversity camp just sounds questionable in itself!
[14:46] <gonzo_> is that new types of mincing?
[14:52] <HixWork> cool image http://goo.gl/v2MWk
[14:54] <HixWork> "The sunrise over the South Pacific Ocean as seen by the Expedition 35 crew members aboard the Earth-orbiting International Space Station"
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[14:59] <Darkside> hey RocketBoy
[15:00] <RocketBoy> hey - I know what your gonna ask
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[15:00] <Darkside> :P
[15:00] Nick change: heathkid|2 -> heathkid
[15:00] <RocketBoy> hang on - i'll work it out now
[15:00] <Darkside> thanks
[15:00] <RocketBoy> gotta dig through some emails
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[15:04] Action: cm13g09 sees the Tearable Puns....
[15:04] Action: cm13g09 faints....
[15:04] <HixWork> heh
[15:04] Nick change: cm13g09 -> cm13g09|ghost
[15:05] <cm13g09|ghost> HixWork: and now I can haunt this channel forever
[15:05] <fsphil> bah, it's only a paper cut
[15:06] <HixWork> cm13g09|ghost, you don't scare me, you look more like a part number
[15:06] <cm13g09|ghost> fsphil: and a little nick at that
[15:07] Nick change: cm13g09|ghost -> cm13g09
[15:08] Action: cm13g09 goes back into Uni
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[15:23] <cuddykid> hm, when my python script is called under cron, the serial transfer doesn't want to work, image capture works however. Works fine if I start the script myself
[15:24] <cuddykid> is there something with serial and cron jobs that might be preventing it from working? Everything else in the script works - just doesn't output the image over serial (for ssdv)
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[15:35] <RocketBoy> Darkside: eMailed
[15:36] <Darkside> Randomskk: cheers
[15:36] <Darkside> ill speak with terry and decide what we do
[15:36] <Darkside> but that soudns good
[15:36] <RocketBoy> cool
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[15:43] <WILLdude> Hi
[15:43] <WILLdude> The joys of trying to learn how mains plugs are wired.
[15:44] <WILLdude> Hot, Neutral and Ground. I know what one of those does :)
[15:44] <HixWork> L-R live neutral ground
[15:45] <HixWork> or blue green brown as in L-R sky, land, underground
[15:45] <gonzo_> earth
[15:45] <HixWork> how i remembered it in physics
[15:46] <gonzo_> actually it's been quite a while since I last had to wire a mains plug
[15:46] <WILLdude> I need to split a mains cable and somehow switch the hot wire with a relay board.
[15:47] <fsphil> do be careful
[15:47] <WILLdude> I'm quite nervous about doing it and I have no clue atm.
[15:47] <WILLdude> My granddad's gonna help.
[15:48] <WILLdude> I still have no clue about how I'll safely split the the wires.
[15:48] <HixWork> unplug it cut it use terminal block
[15:49] <WILLdude> Yeah. The relay oard has a few screw terminals.
[15:50] <WILLdude> I will need to think about safety.
[15:50] <WILLdude> I'm worried now.
[15:51] <HixWork> just google uk wiring
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[15:51] <[1]chrisstubbs> need to remember to connect my router to the UPS. this keeps happening
[15:52] <[1]chrisstubbs> and yeah willdude i would wait for grandad to check it on that one, just to be sure
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[15:52] <WILLdude> Looking at some of the stuff I see on TV, the JPL looks awesome.
[15:52] <eroomde> it is awesome
[15:52] <eroomde> arko works there
[15:52] <WILLdude> WHat does he do?
[15:53] <WILLdude> I'd lol if you said janitor.
[15:54] Nick change: [1]chrisstubbs -> chrisstubbs
[15:54] <eroomde> something about reliability
[15:56] <WILLdude> Is he directly involved with the Rover?
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[16:08] <Lunar_Lander> hello
[16:09] <WILLdude> Hello
[16:09] <Lunar_Lander> how are you today?
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[16:29] <mfa298> WILLdude: for experimenting it would be much better to use a torch bulb and batteries rather than mains stuff.
[16:30] <mfa298> it's much harder to kill yourself with batteries.
[16:31] <mfa298> it's way to easy to accidently touch something you shouldn't when working with mains stuff.
[16:31] <Randomskk> you learn to be rather cautious the second time, hopefully :P
[16:32] <Randomskk> mains electricity is dangerous, but wiring a plug properly isn't difficult, and connecting up a relay board needn't be a big deal
[16:33] <Randomskk> be sure to take sensible precautions - rubber soled shoes and keeping a hand well behind your back when dealing with live mains, for instance
[16:34] <mfa298> It's sounding it bit like having mains going through a relay board to control a light which sounds liks there might be bits of exposed circuit board at mains voltage which doesn't sound like a particularly good idea.
[16:35] <chrisstubbs> project enclosure time
[16:36] <Lunar_Lander> will tried to work with 230 Volts?
[16:36] <Lunar_Lander> ouch
[16:36] <mfa298> learning to wire a plug is definetly a good skill to learn but I'm not sure I'd recommend experimenting with mains through a relay board unless you *really* know what you're doing and how to do it safely.
[16:37] <Randomskk> one thing at a time perhaps
[16:37] <Randomskk> gotta learn sometime
[16:37] <Randomskk> wire it without electricity applied, check there's nothing exposed, stand well clear and apply electricity
[16:38] <chrisstubbs> All in all dont be too put off, just take the appropriate cautions
[16:38] <Randomskk> has anyone built any kit model rockets in the A-C kinda class recently?
[16:38] <Randomskk> it's been years since I've used anything smaller than G ;)
[16:39] <mfa298> preferablly with an rcd connected and potentially on a different circuit to anything important. WILLdude's parents might not appreciate a fuse being blown during their favourite tv show
[16:39] <Randomskk> RCD would definitely be a solid idea
[16:39] <Randomskk> jonsowman and I even used one on the sous vide kettle
[16:39] <Randomskk> boiling water + phase synchronous mains pwm would not have made good bedfellows
[16:39] <jonsowman> hehe
[16:39] <Randomskk> especially with the wires running into the water and all
[16:40] <Randomskk> and my hand also fetching stuff from the water :P
[16:40] <jonsowman> rcd was probably a very good idea really
[16:40] <Randomskk> jonsowman: can you recall whether the little model rockets have any assembly?
[16:40] <Randomskk> jonsowman: not that it's ever had to do anything
[16:40] <jonsowman> true
[16:40] <Randomskk> but better safe than sorry I suppose
[16:40] <jonsowman> no i don't know about the small rockets
[16:41] <jonsowman> why do you ask?
[16:41] <mfa298> I have one that normally lives in one of the boxes of radio stuff for when I'm doing interesting stuff with mains power. The more stuff that can potentially protect you if you do make a mistake is worth while.
[16:41] <Randomskk> think I'll be going to phil's school to chat about space/rockets and thinking of having them build some
[16:41] <Randomskk> mfa298: do you have an isolation transformer? I hear good things but never used one
[16:41] <Randomskk> jonsowman: you could probs come too if you're interested, it's in surrey and all that
[16:41] <jonsowman> Randomskk: oh cool, nice one :)
[16:42] <mfa298> not got one of them. I don't do that much with mains testing stuff.
[16:42] <jonsowman> when?
[16:42] <Randomskk> phil will hopefully be there :P
[16:42] <Randomskk> idk exactly, early july
[16:42] <Randomskk> maybe in the week after graduation
[16:42] <jonsowman> i'm away on holiday from the 6th
[16:42] <jonsowman> but otherwise provisionally fine and I'd love to come
[16:42] <Randomskk> cool
[16:42] <Randomskk> yea well 1st july through 5th july would probably be good then
[16:42] <jonsowman> sounds good
[16:43] <Randomskk> cheeky but I assume you'd be driving? I was gonna be getting the train and walking...
[16:43] <jonsowman> yep I'll drive, np
[16:43] <Randomskk> sweet
[16:43] <mfa298> I've seen people also suggesting running kit with a incandescent bulb in series as protection although I'm not sure i'd really want to trust that.
[16:44] <RocketBoy> hey guys - how do you set up the APRS to habitat gateway - all manually>
[16:44] <RocketBoy> ?
[16:44] <Randomskk> mfa298: yea that sounds a bit dodgy. I'd take an RCD any time
[16:44] <jonsowman> yeah, fuse and rcd
[16:44] <Randomskk> RocketBoy: at the moment yes, you run a script and give it the callsign
[16:44] <Randomskk> (though the plan is that in the near ish future you just make a new flight document with the callsign in)
[16:45] <mfa298> Randomskk: the lamp trick seems to be an old HAM thing, so I guess it was added protection when fuses were bits of wire and didn't blow as quickly.
[16:46] <Randomskk> suppose so
[16:46] <RocketBoy> Randomskk: cool - I have a contact in the US that is using APRS and wants to use the landing spot prediction
[16:46] <Randomskk> they are also highly nonlinear resistors which bugs me when people use them for current limiting and stuff
[16:46] <Randomskk> though I guess once they warm up they're not so bad
[16:46] <RocketBoy> also any plans to add the burst height and descent rate to the flight docs?
[16:46] <Randomskk> oh that's a very good point
[16:46] <Randomskk> I don't think it's written down anywhere but it should be
[16:46] <Randomskk> part of the new prediction stuff
[16:47] <RocketBoy> it would be simple and cool
[16:47] <Randomskk> yea
[16:49] <Randomskk> has anyone done any small model rockets at schools stuff?
[16:51] <Lunar_Lander> hello steve
[16:51] <Lunar_Lander> Randomskk, here at the uni are plans to get teachers involved with the balloon project
[16:51] <Lunar_Lander> I know it's not rockets, but as a side info
[16:51] <Randomskk> it's more specific UK experience with small model rockets I'm after
[16:51] <Lunar_Lander> yea
[16:56] <RocketBoy> Randomskk: I've launched some rockets with my local school
[16:56] <RocketBoy> did it in the playing field
[16:56] <Randomskk> any issues with insurance/permission/whatever?
[16:57] <Randomskk> and do any of the little kits actually have a semblance of assembly?
[16:57] <RocketBoy> they didn't seem to worry - but I had UKRA insurance anyway
[16:57] <RocketBoy> you can get some quite simple to build kits
[16:57] <RocketBoy> some are snap together i belive
[16:58] <Randomskk> specific UKRA insurance or just on account of being a UKRA member?
[16:58] <RocketBoy> but these kids (students) were actually making their own
[16:58] <RocketBoy> full membership of UKRA gives you insurance
[16:59] <Randomskk> yea, I have that
[16:59] <RocketBoy> or you can get BMFA insurance
[16:59] <Randomskk> well I'm a senior bmfa member and a UKRA registered member
[16:59] <RocketBoy> which is cheaper as UKRA don't take a slice
[16:59] <Randomskk> so insurance via bmfa
[16:59] <RocketBoy> should be OK then as long as you are launching to the rules and your vert level
[17:00] <RocketBoy> cert
[17:00] <Randomskk> no level needed for sub-G right?
[17:00] <RocketBoy> G and below yes
[17:00] <Randomskk> good good
[17:00] <RocketBoy> do you want them to launch them or you
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[17:01] <Randomskk> I guess them would be ideal but I don't think it'd be a big deal. probably better if I do
[17:01] <Randomskk> no fair way to pick someone to press the button from a class of tens or more kids after all
[17:02] <RocketBoy> yeah - they may be a way to extend the insurance to them - we do that at ears - so there must be a way to do that via the BMFA rules
[17:02] <RocketBoy> afk - tea
[17:02] <Randomskk> okay
[17:02] <SpeedEvil> Randomskk: auction
[17:02] <Randomskk> cheers
[17:03] <Randomskk> SpeedEvil: haha
[17:03] <Randomskk> I don't want their lunch money :P
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[17:13] <chrisstubbs> WILLdude, have you accidently connected your relay to my mains supply?
[17:15] <WILLdude> Err.
[17:15] <WILLdude> No
[17:17] <chrisstubbs> :P
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[17:31] <chrisstubbs> Upu are you about?
[17:32] <Upu> hey chrisstubbs
[17:32] <Lunar_Lander> evening
[17:32] <Upu> yes will have a look this evening sorry I just got really tired last night and logged and forgot sorry
[17:32] <chrisstubbs> no worries
[17:32] <Lunar_Lander> GPS is in germany due to royal mail tracking
[17:32] <Lunar_Lander> :)
[17:32] <chrisstubbs> i fixed a few problems since the one i sent you
[17:32] <Upu> pm me links again pls
[17:34] <chrisstubbs> Will do :)
[17:35] <steve_____> So I went to the local radio / communications store and brought an aerial http://www.sharman-multicom.co.uk/SHARMAN-S-X-30-2M-70CM-DUAL-BAND-BASE-ANTENNA.2.html
[17:35] <Lunar_Lander> fish fingers and custard
[17:35] <Lunar_Lander> xD
[17:35] <steve_____> Going to hook it up to my TV dongle - hopefully that will do the trick
[17:37] <steve_____> The guy in the store didn't like the idea that I was going to hook it up to a coax connector for TV
[17:37] <steve_____> He suggested that I would loose a lot of signal
[17:38] <steve_____> I figure it will be better than my mini-tv one in any case :)
[17:38] Nick change: MoALTz_ -> MoALTz
[17:41] <mfa298> steve_____: if you're using the standard "low loss" tv coax then it's not particularly low loss but will hopefully work better than the small antenna the dongle came with
[17:41] <steve_____> I have cable from the shop
[17:41] <mfa298> rg58 would be better, rg213 is even better
[17:42] <steve_____> Its not the fattest but the next one down as I was attaching it to the coax connector
[17:42] <steve_____> Specifically for radio
[17:43] <steve_____> The guy in the shop gave me about 10' for free with the aerial connector on one end
[17:44] <mfa298> it could be rg58, its slightly smaller than tv coax and fairly cheap
[17:46] <x-f> it should be written on it
[17:46] <mfa298> the standard tv antenna connector isn't great (compared to other plugs) but should be ok and it's a lot easier than changing the connectors over
[17:46] <steve_____> I was thinking about soldering it on to the dongle or even taking the dongle apart and putting another connector on it
[17:47] <steve_____> but not sure I'll have to
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[17:48] <mfa298> ultimately sticking a bnc or sma on would be better than a tv plug but it's probably easier/cheaper to start out without changing it over
[17:48] <steve_____> The cable is fatter RG8 - mini
[17:49] <mfa298> from memory that's similar in spec to rg58
[17:50] <mfa298> which for short lengths is reasonable (the antennas I use for hab are all rg58)
[17:51] <steve_____> cool - its only about 10 feet long as I am hooking up with a laptop - I figure I can even be a bit mobile with it
[17:51] <steve_____> £40 - not too bad I figure
[17:52] <steve_____> for the aerial, cable and connector
[17:52] <mfa298> that doesn't sound too bad for that set of stuff from a shop.
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[17:52] <steve_____> nope and a local business to boot!
[17:53] <mfa298> and if it's from a ham shop they tend to offer reasonable stuff and decent advice (or at least my local-ish shop does)
[17:53] <steve_____> it is
[17:53] <steve_____> I told him I would let him know how I got on
[17:53] <steve_____> He monitors hot-air balloons in the area
[17:54] <steve_____> but had not heard of this sort of activity
[17:54] <mfa298> hopefully you've managed to convert him then.
[17:54] <steve_____> He was telling me about bouncing signals off the moon and upper atomsphere
[17:55] <steve_____> using 1W of power to talk to Australia and hearing his own comms a few seconds later after it had bounced around the world a few times
[17:56] <Lunar_Lander> yeah, that is quite awesome :)
[17:56] <mfa298> I think moon bouce (EME) was one of the first things I came accross with amateur radio. It was used as a way to measure the distance to the moon when I was on a school science thing.
[17:59] <mfa298> it can be amazing what you can do on fairly low powers. I surprised myself once when I talked to a station (pretty sure it was in malta) using just 5W on HF.
[17:59] <jcoxon> evening all
[17:59] <mfa298> I thought I was on 100W and then realised I hadn't put the power back up on the rig after tuning the antenna
[18:00] <mfa298> evening
[18:01] <steve_____> Well I didn't even intend to get in to radio - haha
[18:01] <steve_____> I just wanted a good micro controller project
[18:02] <mfa298> well there's plenty of radio stuff you can get into when you get interested, you don't even have to talk to anyone.
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[18:05] <steve_____> yeah
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[20:05] <Lunar_Lander> hello S_Mark
[20:05] <Lunar_Lander> how are you today?
[20:06] <S_Mark> Hello Lunar
[20:06] <S_Mark> Good thank you
[20:06] <Lunar_Lander> that is nice
[20:07] <S_Mark> What you been up to
[20:07] <Lunar_Lander> I got a question to the newspaper you show on your blog
[20:07] <Lunar_Lander> ah resting and cleaning up the laboratories
[20:07] <Lunar_Lander> and you?
[20:07] <S_Mark> Not a lot at the moment. You have a question - fire away
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[20:08] <Lunar_Lander> the newspaper page says "COMMENT PAGE 8"
[20:08] <Lunar_Lander> is that a comment on the balloon flight?
[20:08] <S_Mark> Ah yes
[20:09] <S_Mark> It's just a few sentences from the Editor saying well done and next time maybe include local schools
[20:12] <fsphil> evening all
[20:12] <S_Mark> Hello fsphil
[20:12] <Lunar_Lander> cool
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[20:13] <jcoxon> hey fsphil
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[20:17] <Lunar_Lander> S_Mark, on wednesday I learnt an important lesson
[20:17] <Lunar_Lander> if you want to work with the GPS, connect its VCC
[20:17] <S_Mark> Oh yeah?
[20:17] <Lunar_Lander> xD
[20:17] <S_Mark> haha
[20:19] <fsphil> with a high enough voltage you don't need to worry about connecting it
[20:19] <Randomskk> or enough field strength
[20:19] <Randomskk> just power it through the antenna
[20:19] <Randomskk> and the esd diode
[20:20] <fsphil> perfect
[20:20] <mfa298> hmmm, crystal radio gps reciever
[20:20] <Randomskk> you laugh but that actually works
[20:20] <Randomskk> you can do self powered AVR RFID tags like that
[20:20] <Lunar_Lander> xD
[20:20] <Randomskk> coil antenna to the IO pin
[20:20] <Randomskk> the voltage couples to the power plane on the die
[20:21] <Randomskk> http://scanlime.org/2008/09/using-an-avr-as-an-rfid-tag/
[20:22] <mfa298> I'm not surprised it's possible. I've done crytal radio recievers before and had one that could just about drive a speaker (although very quiet)
[20:22] <Randomskk> better yet it uses the RFID field as the clock source
[20:22] <jcoxon> fsphil, looking at the hacked firmware for the uv-3r
[20:22] <jcoxon> remember our work on trying to get it to change freq for a eurus flight
[20:22] <mfa298> although you might struggle to get enough power from the gps sats.
[20:23] <Randomskk> :P
[20:23] <Randomskk> given as they are already below the noise floor n all
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[20:25] <fsphil> jcoxon: I do! is it a complete firmware? I never got a chance to play with it
[20:25] <jcoxon> yeah
[20:25] <jcoxon> whats cool is that you can easily do tones
[20:26] <Lunar_Lander> this is cool
[20:26] <jcoxon> e.g. https://github.com/computermatt/UV3RMod/blob/master/firmware/UV3R/rda.c#L223
[20:26] <Lunar_Lander> we talk about this
[20:26] <Lunar_Lander> in the neighbouring chat we talk about Star Trek XI
[20:26] <Lunar_Lander> xD
[20:26] <jcoxon> so thats CW
[20:26] <jcoxon> but if you can do CW...
[20:27] <fsphil> an FM tone? or SSB?
[20:27] <jcoxon> https://github.com/lelazary/UV3RMod/commit/20e080861047fdc972b9bf0827c6ee4971817783
[20:27] <jcoxon> that looks to me to be AFSK
[20:29] <fsphil> now that's interesting
[20:29] <fsphil> looks like there's a tone generator in there
[20:29] <fsphil> well I guess there must be for opening repeaters
[20:29] <jcoxon> so if we can do tone generators whats stopping us doing packet
[20:30] <fsphil> potentially only speed - though 1200 isn't that fast
[20:30] <jcoxon> so with packet how does it work?
[20:30] <jcoxon> alternating tones with ascii?
[20:30] <fsphil> basically rtty but faster, and no start/stop bits
[20:31] <fsphil> it uses a special sequence at the start to syncronise
[20:31] <fsphil> iirc it's 0111110 -- and uses bit stuffing to make sure that same pattern doesn't happen in the data
[20:32] <jcoxon> could use the code we use for hx-1
[20:32] <fsphil> yep a lot of that should work -- this all seems to be standard C
[20:33] <jcoxon> hmmm something to play with
[20:33] <fsphil> you could possibly make the radio into a basic terminal
[20:33] <fsphil> well without the RX'ing
[20:34] <jcoxon> it could do rx...
[20:34] <jcoxon> there is code for DMTF rxing i think
[20:34] <fsphil> compiler seems to be a win32 binary?
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[20:35] <jcoxon> yeah, apparently it can be run in wine
[20:35] <jcoxon> http://www.liorelazary.com/index.php?option=com_content&view=article&id=51%3Ahacking-the-uv3r&catid=14%3Abaofeng-uv5r&Itemid=17&limitstart=2
[20:38] <fsphil> there really isn't much to that radio
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[20:41] <jcoxon> bbl
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[21:03] <W0OTM> howdy
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[21:05] <Lunar_Lander> hello
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[21:07] <W0OTM> tick tock tick tock
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[21:24] <chrisstubbs_> Whenever the UPS isnt connected up properly we have 5 power cuts in a day, and when it is we have none for a year.
[21:28] <W0OTM> NOTAMS filed, and we are a go for in the morning
[21:28] <W0OTM> woo hoo
[21:29] <craag> Good luck W0OTM !
[21:29] <W0OTM> craag: thanks!
[21:34] <mfa298> chrisstubbs_: I gave up using a UPS a few years ago when I found it was causing more problems than it solved (batteries had gone so it couldn't cope with brownouts that the PSU in the computer could survive)
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[21:35] <mfa298> if only they could warn us in advance of power cuts then we could put a ups in place for that time.
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[21:40] <chrisstubbs_> mfa298 yeah i have a big one and a couple of those extension cord style ones that last 10 mins
[21:40] <chrisstubbs_> the big one was disconnected :(
[21:41] <chrisstubbs_> the battery on the one on my router had gone
[21:41] <chrisstubbs_> silly things
[21:42] <mfa298> I did buy some new batteries for mine, but then decided the batteries were more useful for HAM/HAB stuff.
[21:43] <chrisstubbs_> night
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[22:36] <Lunar_Lander> evening RocketBoy
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[00:00] --- Fri May 10 2013