highaltitude.log.20150129

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[00:47] <Ian_> Now you know the guys at Hackvana and how they would help you . . . Good luck with the new guys. Tell the truth and don't BS the guy, it pays in the end. Remember what Dr House says about patients.
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[07:16] <SA6BSS> Flerb: if you went with dirtypcb yoy can edit yoy files up to 30h after you order, just upload a new brd fuílde
[07:16] <SA6BSS> *file
[07:18] <SA6BSS> as long as you have not got the mail "sent to boardhouse"
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[09:13] <SpacenearUS> New position from 03PI_SKY_LORA after 0315 hours silence - 12http://tracker.habhub.org/#!qm=All&q=PI_SKY_LORA
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[09:21] <SpacenearUS> New vehicle on the map: 03TomekLca_chase - 12http://tracker.habhub.org/#!qm=All&q=TomekLca_chase
[09:29] <SpacenearUS> New position from 03K6RPT-12 after 03a day silence - 12http://tracker.habhub.org/#!qm=All&q=K6RPT-12
[09:35] Nick change: day- -> day
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[10:14] <day> !ping b-64
[10:14] <SpacenearUS> 03day: No contact from 03b-64
[10:16] <day> has anyone ever started multiple balloons at the same time? I would like to see the flightpaths
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[10:19] <SA6BSS> last christmas/newyear there was like 5 or payloads released at the same time from a couple of uk sites
[10:19] <SA6BSS> *5 or 6
[10:19] <mfa298> there's been a few cases where balloons have been launched from the same place on the same day. Sometimes within a hour or close to simultaneous
[10:20] <craag> There was anthony and dave's simultaneous float that showed a massive difference in flight path
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[10:20] <SA6BSS> that multi balloon launch was 28 dec 2013
[10:21] <SA6BSS> leo for ex launched 3 balloons at the same time
[10:22] <daveake> Yeah with our one, Upu's had a very slow ascent rate and ended up on a mountain in Austria, while mine was lost over Switzerland heading back into France
[10:23] <daveake> iirc mine floated at 40km and his at 35km
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[10:46] <SA6BSS> k6rdp-12 doinf niecly, just crossed atlantic
[10:49] <day> daveake: hm 5km is a gigantic difference. I wouldnt be amazed if those two balloons would have flown into different directions
[10:50] <day> i take it, that its difficult to make two balloons float at roughly the same height
[10:50] <daveake> It is when your filler assembly weighs more than the target neck lift :/
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[10:53] <daveake> Upu's write-up http://ava.upuaut.net/?p=522
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[11:02] <daveake> The 2 paths from simultaneous launches - http://www.daveakerman.com/wp-content/uploads/2013/04/paths.png
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[11:05] <LunarWork> hello
[11:06] <lz1dev> daveake: what flight was that
[11:06] <craag> morning LunarWork
[11:06] <daveake> PIE5 and AVA
[11:07] <day> daveake: what is a filler assembly?
[11:07] <daveake> An assembly for filling balloons
[11:07] <day> but doesnt it stay on the ground?
[11:07] <daveake> i.e. hose with something on each end to fit the cylinder and balloon
[11:07] <day> and dont they always weight more than the balloon?
[11:07] <daveake> I shall explain
[11:08] <daveake> The "burst calculator" gives you the amount of gas and the "neck lift" for the ascent rate that you want
[11:09] <daveake> Unless you happen to have £2,000 worth of mass flow meter, you can't measure the amount of gas
[11:09] <daveake> so instead you measure the neck lift, which is how much the pulling is pulling up
[11:09] <daveake> So if you have an inflated and sealed balloon, and hang that weight from it, the balloon neither rises nor falls
[11:10] <daveake> However, you want to measure this neck lift whilst the filler is still attached, so you can put more gas in till you get that balance
[11:10] <daveake> So now the balloon has the hose etc pulling it down
[11:10] <day> i begin to understand :D
[11:10] <daveake> So what you do, normally, is add a weight to the filler (e.g. a bottle of water) so that the total weight (bottle + filler) is equal to that target neck lift
[11:11] <daveake> Inthis case, my filler was made of acetylene hose which is heavy
[11:11] <daveake> and weighed more than our target neck lift
[11:12] <daveake> So we guessed
[11:12] <day> cant you measure the gas weight drop?
[11:12] <daveake> if there's no wind you can
[11:12] <daveake> Put scales underneath the filler
[11:12] <day> yeah
[11:12] <daveake> no good if there's wind
[11:12] <daveake> Anyway I now have amuch lighter filler
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[12:15] <lz1dev> !track 45f8c65d6b8b8d411003a85b285b56ca;edc70f0f2902656e1a5c1500f3e1cbb9
[12:15] <SpacenearUS> 03lz1dev: Here you go - 12http://tracker.habhub.org/#!qm=All&q=45f8c65d6b8b8d411003a85b285b56ca;edc70f0f2902656e1a5c1500f3e1cbb9
[12:15] <lz1dev> daveake: :>
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[12:16] <UpuWork> note mine lz1dev
[12:17] <UpuWork> that was on the ground there
[12:17] <lz1dev> yeah
[12:17] <lz1dev> why is that?
[12:17] <lz1dev> someone stole it?: P
[12:17] <UpuWork> no the last position
[12:17] <mattbrejza> now overlay the aprs trace of the recovery :P
[12:17] <UpuWork> landed on a mountain
[12:17] <UpuWork> haha yeah
[12:17] <UpuWork> Radim went and got it
[12:21] <lz1dev> oh i see
[12:21] <lz1dev> idd
[12:28] <LunarWork> ah the austria flight?
[12:28] <daveake> That really was a good pair of flights esp that recovery
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[13:09] <SpacenearUS> New vehicle on the map: 03VR2SC - 12http://tracker.habhub.org/#!qm=All&q=VR2SC
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[13:18] <infaddict> hello all. i'm gonna end up with my mag mount antenna having BNC connection and my Yagi having N connection. ideally i want SMA to plug into my amp/receiver etc....
[13:18] <infaddict> is it best to snip the ends off and convert myself or use adaptors?
[13:18] <infaddict> and is it an easy convert. guessing there's only 2 wires either way.
[13:19] <daveake> I'm lazy; I'd just buy adapters
[13:19] <daveake> I prefer adapter cables - plug one end socket the other
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[13:20] <infaddict> yep i too am lazy ;-) as long as not huge signal quality difference happy to do the same.
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[13:21] <daveake> teeny tiny losses
[13:22] <infaddict> ok mate thx
[13:22] <daveake> It is worth chopping the cable if it's too long and too lossy
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[13:49] <infaddict> hmmm i'm getting confused with reverse polarity versions of these connectors
[13:51] <infaddict> for radio stuff i presume i dont need RP stuff (is that wifi related)?
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[13:55] <Geoff-G8DHE-M> Hi Upuwork board arrived many thanks just waiting for CPC to deliver rPI now!
[13:56] <UpuWork> nps cheers GEoff
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[13:57] <infaddict> I had a nice delivery today as well UpuWork thx!
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[14:05] <fsphil> mmm yes, RP-SMA is evil and should never have been invented
[14:06] <fsphil> I saw an even more evil one yesterday, RP-SMA and the thread was in the opposite direction
[14:06] <fsphil> actually maybe not as evil- at least you can't accidently connect it to the wrong type of socket
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[14:21] <diegoesep> fsphil yes, it is very annoying when a part is labeled as SMA but it is in fact RP-SMA because they are not aware of the difference(wifi centric cables), so a lot of times I was afraid to order the antenna or connector because of this kind of issue
[14:27] <day> the signal path from youtube has a pretty good video on high frequency connectors
[14:28] <infaddict> agreed diegoesep. equally frustrating is lack of impedence being mentioned and the diff between 50ohm and 75ohm
[14:29] <diegoesep> yes , these 75ohm yagi antenna are frustrating :)
[14:29] <diegoesep> or cables
[14:29] <Geoff-G8DHE-M> Its a shame that the RFM69 and RFM68 modules aren't pin compatible :-(
[14:29] <Geoff-G8DHE-M> rather RFM98
[14:33] <day> https://www.youtube.com/watch?v=6kwamCh1QkE
[14:33] <day> thats it
[14:33] <mattbrejza> the rfm22 and rfm98 are compatible
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[14:36] <Geoff-G8DHE-M> I'll have to have a look thru them all the 98 does FSK as well so maybe it would work anyway
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[14:47] <FuzzyLemon> Hello! Has anyone encountered problems when using two trackers on the same payload? Do they interfere with each other?
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[14:56] <UpuWork> whats the issues FuzzyLemon ?
[14:56] <storm_work> FuzzyLemon: how could they possibly interfere?
[14:57] <UpuWork> all sorts of reason
[14:57] <daveake> Keep the UHF aerials >= 1/4 wavelength apart
[14:58] <storm_work> ah he means two transmitters? I was thinking about two receivers (=trackers)
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[14:58] <UpuWork> she
[14:58] <UpuWork> switched mode PSU's could lock out GPS
[14:58] <UpuWork> possibly
[14:58] <UpuWork> lets see what the fault is
[15:09] <FuzzyLemon> When i flew a mobile phone with a transmitter it caused a GPS lock
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[15:20] <FuzzyLemon> it wasn't on flight mode
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[15:24] <craag> You mean it jammed the gps on the rtty tracker?
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[15:51] <FuzzyLemon> yes. it just sent back 0,0 for the entire flight
[15:51] <Vaizki> infaddict, RP-SMA was created for wifi so that consumers wouldnt go changing antennas on their own to models with high gain. Ism eirp etc
[15:52] <Vaizki> Of course now it's easier to get RP-SMA than normal
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[15:59] <craag> FuzzyLemon: Was the gps working before you put the phone in?
[16:00] <Ian_> Thesignalpath has some very good vids. Nicely explained followed by the bench demo's to illustrate the theory. Some exfellent kit on his bench too
[16:01] <fsphil> not a fan of those types of channels. they cause me to spend money
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[16:04] <Ian_> Great fan, haven't got enough to be able to afford that sort of kit. Got a Rigol scope though because largely of EEVBlog
[16:04] <UpuWork> could happen FuzzyLemon and the effect sometimes isn't apparent on the ground
[16:04] <UpuWork> sugges you stick the GSM in its own ball underneth
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[16:07] <FuzzyLemon> What kind of ball?
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[16:09] <fsphil> Ian_: snap
[16:09] <UpuWork> those polystyrene balls 1 sec
[16:09] <Ian_> Craft polystyrene
[16:10] <UpuWork> http://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2050601.m570.l1311.R1.TR7.TRC2.A0.H0.Xpolyst&_nkw=polystyrene+balls&_sacat=0
[16:10] <UpuWork> Cheap chinese stuff can cause issues, though its mainly those small cameras that do it
[16:11] <FuzzyLemon> why do the cameras cause problems? Sorry about all the questions
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[16:12] <Ian_> They are electronically noisy and radiate lots of sprogs
[16:13] <Ian_> And swamp the GPS receiver
[16:13] <craag> questions are good. Digital circuits have lots of fast switching going, especially modern cameras, and if they're not very well filtered/shielded (one of the bits cheap stuff skimp on), this makes them into a little transmitter of their own.
[16:13] <craag> some gopros are known to jam gps (ok, they're not even cheap)
[16:14] <craag> The answer is to just put some distance between them
[16:15] <FuzzyLemon> >1/4 wavelength?
[16:15] <craag> as much as possible
[16:16] <craag> hence anthony's suggestion of putting one part or the other in another little polystyrene ball, further down the cord.
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[16:18] <craag> You're already using the habduino with the active patch antenna iirc, which is one of the better antennas at coping with any interference.
[16:19] <day> a guy in another channel was able to restart his pc by holding his phone next to the mainboard :p
[16:21] <Ian_> If the PC PSU gets a jolt on the start line then it's just like you pushed the switch
[16:21] <SpacenearUS> New vehicle on the map: 03TomekLca_chase - 12http://tracker.habhub.org/#!qm=All&q=TomekLca_chase
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[17:25] <Flerb> It's kind of upsetting - I think my granddad is getting into pseudoscience
[17:25] <Flerb> I think he wants to set up a hydrogen electrolysis system in the greenhouse for heating it
[17:26] <Flerb> and burn it
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[17:26] <Flerb> Burning hydrogen is really really inefficient
[17:32] <Vaizki> he wants to use electricity to create hydrogen to burn to heat a greenhouse?
[17:34] <Flerb> Vaizki: yes.
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[17:37] <Vaizki> sounds nice. sounds like an expensive explosion with lots of glass flying
[17:38] <Vaizki> you would think that heating method would be quite popular if it saved any money :)
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[17:52] <Flerb> I (think I) have fixed all the mistakes on the pcb
[17:52] <Flerb> cant be sure
[17:52] <Flerb> at £15 it doesn't matter all too much - just worried
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[18:16] <Ian_> Flerb, did you read this earlier [07:16] <SA6BSS> Flerb: if you went with dirtypcb yoy can edit yoy files up to 30h
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[18:16] <Ian_> [07:17] <SA6BSS> as long as you have not got the mail "sent to boardhouse"
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[18:20] <Ian_> Que?
[18:21] <Flerb> Ian_: oh yes
[18:21] <Flerb> I did
[18:21] <Flerb> Not going with them
[18:22] <Ian_> Ah!
[18:22] <Flerb> I found one place with good reviews that gets them made within 3-4 days and shipped in 7-11
[18:22] <Flerb> I think it was 7-11
[18:22] <Vaizki> does it have a url?
[18:23] <Flerb> I don't really trust unregistered airmail
[18:23] <Flerb> Vaizki: no, it has a telex number :P
[18:23] <Flerb> smart-prototyping.com
[18:23] <Ian_> Wow, does telex still exist . . .
[18:23] <Ian_> ?
[18:23] <Vaizki> yes
[18:23] <Vaizki> i make telex software
[18:24] <Ian_> Wizard on the old green keys - telex = teleprinters?
[18:24] <Vaizki> well kinda. made in the past. but still used.
[18:25] <Ian_> Sorta though that telex had succumbed to fax and fax to email yonks ago.
[18:25] <Ian_> It put bread and butter on the table for many a year!
[18:25] <Ian_> ex telegraphist
[18:25] <Vaizki> well rtty is radio telex.. :)
[18:26] <Ian_> Ah . . . yes, but telex was a dial up teleprinter exchange service
[18:26] <Ian_> but point taken :)
[18:26] <Ian_> Whir clunk chompety chomp
[18:27] <Ian_> :)
[18:28] <Vaizki> yea but international links were hf radio i think
[18:28] <Vaizki> many of them
[18:28] <Ian_> Yes, lots of military teleprinter circuits on HF
[18:29] <Vaizki> and there was point to point telex, my parents used to be diplomats so as a kid i got to use telex realtine chat :)
[18:29] <Vaizki> realtime even
[18:29] <Ian_> I saw diplomatic wireless Piccolo system once . . .
[18:30] <Vaizki> anyway, oil rigs for example still used telex 10y ago.. not sure if any more
[18:33] <Ian_> I didn't realise that it was still in use much after 2000 to be honest. I think that the mechanical teleprinters manufacturers had dried up long ago and the technology superseded, but of course nothing to stop OilCos putting a PC on the end of the line/radio
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[18:36] <Vaizki> yea and it was nice to scan for keywords because its text and not an image like fax
[18:36] <Ian_> I remember reading the punch tape on tape relay systems
[18:36] <Vaizki> so we ciuld route messages to email addresses and sms easily
[18:38] <Ian_> I was a cold war warrior of the keyboard variety :)
[18:38] <Vaizki> but i guess sending pcb gerbers over telex... poor Flerb
[18:40] <Ian_> Ha ha. Flerb takes some keeping up with. I think he must have chosen his pcb supplier by spinning a roulette wheel. Obviously we thought he had used one but he had changed his mind and used another.
[18:40] Mrballoon (53d86ae6@gateway/web/freenode/ip.83.216.106.230) joined #highaltitude.
[18:41] <Mrballoon> Hi!
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[18:41] <Ian_> Hi Mrballoon, you have the floor!
[18:41] <daveake> strange place for a balloon
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[18:42] <Ian_> Gotta start somewhere
[18:42] <lz1dev> you guise
[18:42] <Mrballoon> I am trying to find a balloon flight from the last year, but cannot find it. Did the HabHub remove it from its history?
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[18:42] <daveake> the only way is up
[18:42] <daveake> which flight?
[18:44] <Mrballoon> I do not know the name, nor the exact time. But it was somewhere in the end of december
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[18:44] <Flerb> Ian_: I wasn't sure so I went with the cheapest
[18:44] <Flerb> Don't think I ever said I'd go with dirtypcbs
[18:44] <lz1dev> Mrballoon: do you know any part of the name?
[18:45] <Ian_> Ha, well that's not such a bad strategy and does make sense. I have received hundreds of bits and pieces from China with only one loss of about £1.34
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[18:45] <Flerb> It was kind of depressing at school today. We had this guy come in to talk to us about revision. Revision is of course just memorizing facts so you can pass an exam.
[18:45] <Flerb> Doesn't actually indicate understanding, most of it was on speed-reading and mind-mapping
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[18:47] <Ian_> I guess that he was banging the drum a bit. I do remember learning/remembering a lot by revising all the internal frequencies of a Racal RA17 outside the lab before being tested upon it. All forgotten long ago but passed on the day.
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[18:50] <Flerb> To be honest I'm beginning to forget my intermediate exam stuff
[18:50] <Ian_> Revising is sort of a memory refreshing exercise. I bet there are more than a few bozos that won't bother and it will show in their exam results.
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[18:50] <Mrballoon> Had to ask my friend. He named it helios 1 and it flew over Sweden.
[18:51] <Ian_> Nah, you have just shuffled it out into long term storage. The detail is dulled, but you will be able to pickup the subjects again very quickly by . . . revising it! :) Chin up!
[18:52] <daveake> The helios flight had very little tracking data
[18:53] <daveake> The guys launching it didn't bother to track and, I think, only one other person did some tracking for them
[18:53] <lz1dev> did they even have a flight doc?
[18:53] <lz1dev> i don't see it on the calendar
[18:54] <daveake> No I don't think so
[18:54] <lz1dev> welp
[18:54] <lz1dev> !id 891d880dd64913850c97fbdca0a1415f
[18:54] <SpacenearUS> Payload config 03HELIOS 1 10(891d880dd64913850c97fbdca0a1415f) - 12http://habitat.habhub.org/habitat/891d880dd64913850c97fbdca0a1415f
[18:54] <SpacenearUS> Callsign(s): 03PISKY
[18:54] <SpacenearUS> Transmission #0: 03PIE with sensors 300 baud - 03434.45 MHz USB 03RTTY 300/880Hz ASCII-8 none 2
[18:55] <daveake> It landed on a frozen lake and was picked up my a skater, I think
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[18:55] <lz1dev> oh yeah
[18:55] <daveake> I think it had 2 GSM trackers neither worked
[18:55] <Ian_> I remember that flight a short while ago - fiasco
[18:55] <lz1dev> :D
[18:55] <daveake> So basically the only thing that worked was the label on the box
[18:55] <pc1pcl> there was something wrong with the name because of the space in it or something, and some hacks were done in real time to be able to process
[18:56] <lz1dev> low tech > high tech
[18:56] <Ian_> A triumph of not-planning as I remember
[18:56] <lz1dev> *only when you dont turn the high tech on
[18:56] <lz1dev> :P
[18:56] <daveake> well the tracker worked
[18:56] <daveake> but the tracking didn't
[18:56] <lz1dev> well how can people track
[18:56] <lz1dev> without a flight doc
[18:56] <craag> the human element of it needed more debugging :/
[18:57] <pc1pcl> http://habhub.org/zeusbot/logs_highlighted/highaltitude.log.20141220.html
[18:57] <daveake> I tried. I got told I was a bad teacher. At that point I gave up.
[18:57] <pc1pcl> [12:15] <Reb-SM0ULC> $$HELIOS 1,2069,12:15:14,60.02843,14.28753,25201,0,0,6,34.8,6.7*B4F6
[18:58] <lz1dev> oh yeah
[18:58] <lz1dev> they had the callsign wrong as well
[18:58] <Ian_> Should have performed the bacon eating ritual, it might have gone down better - the bacon that is!
[18:58] <pc1pcl> [13:01] <SpacenearUS> New vehicle on the map: 03HELIOS - 12http://habhub.org/t/?focus=HELIOS
[18:59] <pc1pcl> anyway, maybe the best documentation of the flight is just the zeusbot log ;)
[18:59] <lz1dev> zeusbot doesn't clear color codes
[18:59] <lz1dev> thats a bit sad :9
[19:00] <lz1dev> !ping aeth*
[19:00] <SpacenearUS> 03lz1dev: No contact from 03aeth*
[19:00] <lz1dev> !aprs ping aeth*
[19:00] <SpacenearUS> 03lz1dev: Latest contact: 03AETH31-10 10(a month ago), 03AETH31-1 10(2 months ago), 03AETH31-2 10(2 months ago), 03AETH31-9 10(2 months ago), 03AETH28-10 10(2 months ago), 03AETH32-4 10(a month ago), 03AETH32-2 10(a month ago), 03AETH32-1 10(20 days ago), 03AETH32-3 10(a month ago), 03AETH31-8 10(a month ago), 03AETH28-3 10(2 months ago), 03AETH28-2 10(2 months ago), 03AETH28-1 10(2 months ago
[19:00] <pc1pcl> hmm, gotten used to those colorcode leftovers that I don't even notice them anymore :)
[19:00] <lz1dev> rip AETH*
[19:02] <Mrballoon> ok. but theis flight is not seen on the map anymore?
[19:02] <daveake> It never was on the map
[19:03] <daveake> Actually I'm not so sure, but certainly the entire flight was not on the map.
[19:03] <daveake> Reb-SM0U1C was the only person that received any data
[19:03] <lz1dev> i think it was, after i fixed some of the positions
[19:04] <daveake> ok
[19:04] <lz1dev> the callsign was wrong
[19:04] <daveake> I think it'll be easier if you say what was right
[19:04] <lz1dev> i wouldn't have said anything
[19:05] <pc1pcl> might be able to find something under 'HELIOS' as the 'fixed' call-sign.
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[19:08] <Mrballoon> Well, never mind. I just wanted to take a look on where it started an landed.
[19:10] <daveake> habhub has neither of those, for the reason I gave
[19:11] <pc1pcl> quite a bit logged in the db actually
[19:11] <pc1pcl> http://habitat.habhub.org/habitat/_design/ept/_list/csv/payload_telemetry/payload_time?include_docs=true&startkey=[%22891d880dd64913850c97fbdca0aa281a%22]&endkey=[%22891d880dd64913850c97fbdca0aa281a%22,[]]&fields=_sentence,_receivers,sentence_id,time,latitude,longitude,altitude,speed,heading,satellites,temperature_internal,battery
[19:15] <Ian_> Given the amount of trees and water that it could get lost in, it found a frozen lake and a passer by retrieved is afaik. Luckier than it deserved, but hopefully will fly again with proper pre-flight planning and testing.
[19:16] <Mrballoon> Oh! I dont get any of these data. Sorry im not a balloonist. Yes they told it has landed on ice
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[19:28] <Vaizki> Airspace reservation warning, I'm flying commercial and don't need flying iceboxes in the engines
[19:29] <Vaizki> although the box would make pretty confetti
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[19:38] <Reb-SM0U1C> ello!
[19:40] <Reb-SM0U1C> oh, mrballoon quit
[19:44] <daveake> yeah
[19:44] <daveake> He was after some non-existant data
[19:45] russss (sid30@gateway/web/irccloud.com/x-qewwouvwiktanuzd) joined #highaltitude.
[19:46] <russss> oh hi
[19:47] <daveake> hmmm
[19:48] <daveake> I am nosey today
[19:48] <daveake> Noting mrballoon's IP address ...
[19:48] <daveake> ... I find ...
[19:48] <daveake> [09:39] HELIOS_ (53d86ae6@gateway/web/freenode/ip.83.216.106.230) joined #highaltitude.
[19:48] <daveake> [09:39] <HELIOS_> Hello!
[19:48] <daveake> [09:40] <HELIOS_> I´m a student from Sweden launching a balloon on saturday 09:30.
[19:48] <daveake> the same IP
[19:48] <daveake> small world
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[19:48] <lz1dev> a 'friend' :)
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[19:48] <daveake> Another fail
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[19:52] <russss> do people still put Canon PowerShots on balloons? I have unearthed a spare A640 which I'd rather see go to a good cause rather than cluttering up my desk
[19:52] <daveake> yeah they're still a good option
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[20:07] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12http://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
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[20:55] <Laurenceb__> hi
[20:58] <Laurenceb__> has anyone here got an airspy running under linux?
[20:58] <Laurenceb__> this thing is driving me nuts
[20:58] <Laurenceb__> why the hell does everyone insist on custom usb drivers
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[20:59] <SpacenearUS> New vehicle on the map: 03EDUPIC12 - 12http://tracker.habhub.org/#!qm=All&q=EDUPIC12
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[21:03] <Reb-SM0U1C> Laurenceb__: try #airspy ? :)
[21:03] <Laurenceb__> aha
[21:03] <Laurenceb__> thanks
[21:03] <jededu> I should be launching EDUPIC12 tomorrow morning around 8:00
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[21:06] <Reb-SM0U1C> jededu: some new funny stuff onboard?
[21:06] <Reb-SM0U1C> SA6BSS-Mike: gokväll!
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[21:07] <jededu> Only electronics I was going to fly it in DomonoEX16 mode but thr resistors diddnt arrive
[21:17] <infaddict> hey guys, looking for a power plug to connect to my HABAmp, to run to a power source (such as my USB dongle). Any idea what size/shape I should look for pls?
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[21:18] <infaddict> I thought I might get one with it, but guessing the naked version I bought doesn't come with a plug
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[21:20] <Geoff-G8DHE> Why not power from another USB socket ?
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[21:21] <infaddict> I could do, but only have 2 and will be using one for mobile dongle and second for radio dongle. my idea was to hook into the USB header inside the radio dongle as I'm opening it up anyway to change the connection to SMA.
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[21:22] <infaddict> i could wire to the board/some header pins but seen some photos with what looks like a plug which would be easier
[21:22] <Geoff-G8DHE> Yup put a Bias T in for power thru the co-ax connection
[21:23] <infaddict> it has a switch for Bias T. being a newbie I'm not fully up to speed on that. So when i plug coax into USB dongle, will the coax then carry this power?
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[21:25] <Geoff-G8DHE> Yup, that's the idea, you need to set Bias T up at both ends of course then the power is fed over the co-ax link. Are you using a Dongle (like Airspy) which has a Bias T already in place ?
[21:25] <infaddict> For my first attempt I'm trying a cheap (£10) USB dongle, so it may not even have Bias T.
[21:25] <infaddict> think i've found the connector i'd need for direct power connection: https://dlnmh9ip6v2uc.cloudfront.net/assets/2/6/0/7/f/51141810ce395f4d7e000007.jpg
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[21:26] <Geoff-G8DHE> No a simple donge won't have a bias T, but if your changing the rf input plug you may be able to add the components its only an isolating capacitor to the dongle rf in, then a choke to the +5v rail in essence
[21:27] <infaddict> interesting
[21:27] <infaddict> thanks Geoff
[21:27] <Geoff-G8DHE> A quick Google will give you plenty of ideas
[21:28] <infaddict> sure taking a look now
[21:30] <DL7AD> evening
[21:32] Nick change: LazyL-M0LEP -> LazyLeopard
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[21:33] <DL7AD> does anybody know how to encode WSPR?
[21:35] <fsphil> http://www.g4jnt.com/Coding/WSPR_Coding_Process.pdf any help?
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[21:36] <DL7AD> fsphil: yeah ive made my lib by this doc but wspr was unable to decode it
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[21:46] <infaddict> Anybody know is it matter if you mount the uBlox m8c breakout board horizontally or vertically? In terms of the chip antenna and signals?
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[21:47] <Lunar_Lander> the chip should be horizontal
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[21:48] <mattbrejza> since when?
[21:49] <Lunar_Lander> valid point
[21:49] <fsphil> I've always had it vertical, but tat's just to fit in the box I used
[21:50] <Lunar_Lander> I supposed when you got it vertical, one side of it is shielded off by the PCB and when it is horizontal, its facing towards the sky
[21:51] <fsphil> te pcb doesn't have any ground plane near the antenna
[21:51] <infaddict> mmm thats what i was thinking too Lunar_Lander but wasn't sure if that would really matter or not. not sure how sensitive these are.
[21:51] <Lunar_Lander> phil that is true, I must admit that I didn't think of that before
[21:52] <infaddict> i mean, its inside a sealed box anyway so i don't think the PCB would hurt (esp as phil just pointed out about ground)
[21:52] <fsphil> just keep the antenna away from wires or other metals, you'll be fine
[21:53] <jededu> I have tried it horizontal and vertical made no difference
[21:53] <infaddict> ok cheers guys
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[21:58] <Lunar_Lander> good night :)
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[22:01] <Flerb> Is it ERC or DRC that should notice shorts on a PCB?
[22:01] <Flerb> Oddly, I created a deliberate short to see if it was working and it didn't
[22:01] <Flerb> (pick it up)
[22:01] <Flerb> wait no
[22:01] <Flerb> it did tis time
[22:02] <Flerb> I had an overlap in there despite it passing the drc a while ago
[22:02] <Flerb> maybe i'm spending too much time on this
[22:03] <Flerb> maybe it was just the manufacturer's drc
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[22:55] <Vaizki> ok so I come home from a 2 day business trip and yes I left the discone antenna in the study but hey is that an excuse to HANG LAUNDRY ON IT?
[22:55] <Vaizki> I think this is one of those "hints" I'm supposed to understand
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[23:05] <fsphil> dual use
[23:10] <Ian_> Ha ha, that's women for you, subliminal messages. At least you didn't get cold shoulder for your evening meal :)
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[00:00] --- Fri Jan 30 2015