[00:02] jcoxon (~jcoxon@cpc1-lanc4-0-0-cust720.3-3.cable.virginmedia.com) joined #highaltitude. [00:03] ping Zuph [00:03] stilldavid_ (~stilldavi@stilldavid.com) joined #highaltitude. [00:04] stilldavid_ (~stilldavi@stilldavid.com) left irc: Client Quit [00:05] pong jcoxon [00:10] stilldavid_ (~david@stilldavid.com) joined #highaltitude. [00:12] hey Zuph, just a quick question - still on for launch next weekend? [00:13] So far, ask again Tuesday! [00:13] hehe, just making plans to be free... [00:13] We're actually getting around to *testing* this time around! [00:13] :) [00:13] flying hte HF radio as well? [00:14] We're supposed to. Haven't heard from WB8ELK recently, though. [00:14] hehe, yeah would be worth gently kicking him [00:15] think it'll come in handy for your first flight [00:15] Yeah [00:15] We do too [00:15] well the dl-fldigi/spacenear.us is ready to go [00:15] Heh, we pulled one of his 2M radios out of a tree today :-p [00:15] i'll release a new version before hand- we've got rig control in the interface and also frequency tracking - if the signal goes off the waterfall it can retune the radio [00:16] Awesome :) [00:17] Action: russss wonders what the best multiband HF antenna he can construct within the 8m x 3m x 2m space on his roof is [00:17] okay, well i'll be around next weekend - just get in touch if you need anything organised etc - happy to help out [00:17] Awesome! We really appreciate it. [00:18] russss, magnetic loop? [00:18] maybe I need some kind of clandestine telescopic tower that I can hoist up [00:18] russss, you need a stealth antenna [00:18] russss: I note that wind turbines with up to - IIRC - 6m above the ridgeline require no planning permission. [00:18] yeah, I mean I have plenty of vertical space available but it's just a question of how far I can go without violating the conservation area laws [00:19] russss: So - get a 5.9m pole, and a 0.1m fan. [00:19] haha [00:19] I've not had much luck with verticals [00:19] russss, does the hackspace have roof space? [00:20] not really. There is roofspace on the building, but we don't technically have access to it (one of the doors is kicked in) and there is a mobile phone transmitter up there [00:20] so I think even if we asked for permission, they'd probably say no on account of the mobile transmitter [00:21] added to that, the accessible bit of roof is about ~60m away from our actual space (the rest of the roof is wriggly tin) [00:21] russss, i reckon a stealth 10m vertical, that is deployable [00:22] I've got 4m of PVC pipe on my roof already for the UHF [00:22] 10m would require a fair amount of support [00:23] the vertical will need radials too [00:23] SpeedEvil (~user@tor/regular/SpeedEvil) left irc: Quit: Leaving. [00:26] stilldavid (~dave@68-64-214-18.static.forethought.net) left irc: Quit: Leaving [00:26] Nick change: stilldavid_ -> stilldavid [00:27] magnetic loop antennas are crazy [00:27] SpeedEvil (~user@tor/regular/SpeedEvil) joined #highaltitude. [00:29] crazy money [00:30] russss, is this for txing [00:30] ? [00:30] not currently [00:30] just rx [00:30] Action: russss is still trying to sort out the whole getting-a-license thing [00:30] stilldavid (~david@stilldavid.com) left irc: Quit: ZNC - http://znc.sourceforge.net [00:30] stilldavid (~david@stilldavid.com) joined #highaltitude. [00:30] I have a ~15m random wire up there at the moment but it doesn't seem to be great. I think that might just be a ground plane thing though [00:31] Action: MrCraig still wants to get licensed. [00:31] russss, yeah grounding is key [00:31] i'm going to throw up a long wire as well [00:31] SpeedEvil1 (~user@tor/regular/SpeedEvil) joined #highaltitude. [00:31] it tends to sit in a puddle of water at the moment, which is probably suboptimal [00:31] remember when we played with radios in the hold hackspace [00:31] and the improvment when we grounded it to the copper piping [00:32] Action: SpeedEvil1 goes to hunt for a telecoms engineer. [00:32] old8 [00:32] so I think I need to get it slightly raised up [00:32] Action: SpeedEvil1 sighs. [00:32] SpeedEvil (~user@tor/regular/SpeedEvil) left irc: Disconnected by services [00:32] Nick change: SpeedEvil1 -> SpeedEvil [00:33] russss, how about a slinky antenna [00:33] also I had to take my feed wire down because it was running through the top floor which we're trying to finish refurbishing [00:34] right night all [00:34] Action: jcoxon has to work tomorrow [00:34] night jcoxon - work on a bank holiday? sux [00:34] Good luck. [00:34] night jcoxon [00:34] MrCraig, yeah on call [00:34] nice 13hr day [00:34] ugh! [00:34] hope it's an easy 13hrs [00:35] Silly people getting sick at odd hours. [00:35] i know! [00:35] night [00:35] jcoxon (~jcoxon@cpc1-lanc4-0-0-cust720.3-3.cable.virginmedia.com) left irc: Quit: Leaving [00:48] SpeedEvil (~user@tor/regular/SpeedEvil) left irc: Quit: Leaving. [00:48] SpeedEvil (1000@mauve.plus.com) joined #highaltitude. [00:48] SpeedEvil (1000@mauve.plus.com) left irc: Changing host [00:48] SpeedEvil (1000@tor/regular/SpeedEvil) joined #highaltitude. [00:52] SpeedEvil (1000@tor/regular/SpeedEvil) left irc: Client Quit [00:52] SpeedEvil (1000@tor/regular/SpeedEvil) joined #highaltitude. [01:26] X-Scale (~email@2001:470:1f14:135b::2) joined #highaltitude. [01:29] Laurenceb_ / Laurenceb: are you there? [01:31] hi all [02:05] Laurenceb_: I think I might have a solution to your bug [02:05] http://pastie.org/private/kct7h3n5l5hjing08tnww [02:06] and if that works, I think I know why. [02:06] (it appears to work for me) [02:12] MrCraig (MrCraig@host109-154-102-8.range109-154.btcentralplus.com) left irc: [02:14] actually; that changes the UI hang into a consistant FPE [02:14] it randomly worked once >.> [02:28] ok I've *actually* fixed it now [02:29] http://pastie.org/private/3x18vpiol02dgcujoexszq [02:30] Auctus (~Auctus@164-172.126-70.tampabay.res.rr.com) left irc: Read error: Connection reset by peer [02:31] So I think there is a race condition. libsndfile's close() function is called by the thread that does the UI Stuff when you uncheck the checkbox [02:31] libsndfile's read function is called by the audio thread. [02:32] now what happens is that this close function destroys the libsndfile object while the other thread is in the middle of calling read() - and therefore bad things happen, a SIGFPE caused by a divide by zero, or a deadlock. I'm suprised there wasn't any SIGSEGV [02:32] This bug affects the fldigi playback code, not just Stream [02:32] however it would hardly ever have any effect on the playback code, since that code spends all of its time blocked inside sleep() - so it doesn't matter [02:33] your code, Stream, spends all of its time blocked inside read() - so it has a very high chance of causing problems [02:33] anyway "so it doesn't matter" isn't true - imo the bug should be fixed everywhere. But adding a quick mutex seems to fix things for now. [02:38] Nick change: TraumaPrincess -> TraumaPony [02:59] Jasperw (~jasperw@93-97-176-250.zone5.bethere.co.uk) left irc: Quit: Leaving. [03:23] :) [03:49] shipit (~sumeet@c-67-180-23-104.hsd1.ca.comcast.net) joined #highaltitude. [04:20] Auctus (~Auctus@164-172.126-70.tampabay.res.rr.com) joined #highaltitude. [04:27] jan_bangna (~jandetlef@ppp-124-120-92-46.revip2.asianet.co.th) joined #highaltitude. [05:24] jan_bangna (~jandetlef@ppp-124-120-92-46.revip2.asianet.co.th) left irc: Quit: jan_bangna [05:44] The-Compiler (~compiler@unaffiliated/the-compiler) left irc: Ping timeout: 250 seconds [05:57] hmm [06:12] The-Compiler (~compiler@static.51.192.4.46.clients.your-server.de) joined #highaltitude. [06:12] The-Compiler (~compiler@static.51.192.4.46.clients.your-server.de) left irc: Changing host [06:12] The-Compiler (~compiler@unaffiliated/the-compiler) joined #highaltitude. [06:47] DagoRed (~dago@207-172-35-190.c3-0.eas-ubr15.atw-eas.pa.cable.rcn.com) left irc: Quit: sleepy time, night [07:06] Zuph (~bradluyst@69.64.6.70) left irc: Ping timeout: 240 seconds [07:56] Auctus (~Auctus@164-172.126-70.tampabay.res.rr.com) left irc: Quit: Leaving [08:13] Simon-MPFH (~simon@phantom.mpfh.co.uk) joined #highaltitude. [08:14] Nick change: TraumaPony -> TraumaKitteh [08:18] SpikeUK (~chatzilla@host86-135-170-34.range86-135.btcentralplus.com) joined #highaltitude. [08:18] SpikeUK (~chatzilla@host86-135-170-34.range86-135.btcentralplus.com) left irc: Changing host [08:18] SpikeUK (~chatzilla@pdpc/supporter/monthlybyte/spikeuk) joined #highaltitude. [08:21] GW8RAK (~chatzilla@client-82-26-166-183.pete.adsl.virginmedia.com) joined #highaltitude. [08:40] SpikeUK (~chatzilla@pdpc/supporter/monthlybyte/spikeuk) left irc: Quit: ChatZilla 0.9.86 [Firefox 3.6.13/20101203075014] [09:36] Gnea (~gnea@unaffiliated/gnea) left irc: Ping timeout: 240 seconds [09:45] Gnea (~gnea@unaffiliated/gnea) joined #highaltitude. [09:53] MrCraig (MrCraig@host109-154-102-8.range109-154.btcentralplus.com) joined #highaltitude. [10:56] Action: MrCraig is cold [11:05] the sun is out here -- first time in ages :) [11:20] I'm indoors, heating on - still cold o.O [11:21] think I'm gonna brave the outdoors to fetch some food stuffs and then cower under a blanket. [11:28] Morning All. It would also be nice to see some sun here. [11:28] But I've been busy sorting out and have some ARRL Handbooks going free to a good home, apart from postage. Does anyone want one or many? [11:31] hi all [11:31] DanielRichman: thats for the help with fldigi [11:31] unfortunately it doesnt seem to be fixed [11:35] in fact its exactly the same as before... [11:38] GW8RAK, what's the handbooks about? [11:38] They are intro to radio books published by the US equivalent of the RSGB. [11:39] They cover all the theory and practical needed to pass the ARRL Technical exam [11:39] Which is out full amateur licence. [11:40] ah, probably a bit over my head then [11:40] They are from the '80's and 90's, but although some things have changed, the bits on aerials etc have not changed. [11:40] They start at the basics and then progress fairly quickly. [11:42] close(28) = 0 [11:42] read(21, [11:42] +++ killed by SIGFPE +++ [11:42] 28 is the pipe [11:51] ok, horus launch tomorrow [11:51] Horus 12a [11:51] 0230GMT [12:11] shipit (~sumeet@c-67-180-23-104.hsd1.ca.comcast.net) left irc: Remote host closed the connection [12:13] DanielRichman: ok I've fixed it - needed to add more mutex stuff [12:27] X-Scale (~email@2001:470:1f14:135b::2) left irc: Remote host closed the connection [12:34] Burninate (~ass@pool-96-255-9-200.washdc.fios.verizon.net) left irc: Read error: Connection reset by peer [12:34] Burninate (~ass@pool-96-255-9-200.washdc.fios.verizon.net) joined #highaltitude. [12:37] Burninate (~ass@pool-96-255-9-200.washdc.fios.verizon.net) got netsplit. [12:37] rafusy (rav@torvalds.rootnode.net) got netsplit. [12:37] x-f (~x-f@durvis.zetcom.lv) got netsplit. [12:37] ACowan31 (~ACowan31@lister.hexoc.com) got netsplit. [12:37] Matt_soton (~Matt_soto@lister.hexoc.com) got netsplit. [12:37] ben_apex (~ben_apex@lister.hexoc.com) got netsplit. [12:41] MrCraig (MrCraig@host109-154-102-8.range109-154.btcentralplus.com) left irc: Ping timeout: 260 seconds [12:48] x-f (~x-f@durvis.zetcom.lv) got lost in the net-split. [12:48] ACowan31 (~ACowan31@lister.hexoc.com) got lost in the net-split. [12:48] Matt_soton (~Matt_soto@lister.hexoc.com) got lost in the net-split. [12:48] ben_apex (~ben_apex@lister.hexoc.com) got lost in the net-split. [12:48] rafusy (rav@torvalds.rootnode.net) got lost in the net-split. [12:48] Burninate (~ass@pool-96-255-9-200.washdc.fios.verizon.net) got lost in the net-split. [12:49] MrCraig (MrCraig@host81-151-212-19.range81-151.btcentralplus.com) joined #highaltitude. [12:49] scratch that [12:49] it's Horus 13 [12:49] >_> [12:53] Burninate (~ass@pool-96-255-9-200.washdc.fios.verizon.net) joined #highaltitude. [12:53] rafusy (rav@torvalds.rootnode.net) joined #highaltitude. [12:53] x-f (~x-f@durvis.zetcom.lv) joined #highaltitude. [12:53] ACowan31 (~ACowan31@lister.hexoc.com) joined #highaltitude. [12:53] Matt_soton (~Matt_soto@lister.hexoc.com) joined #highaltitude. [12:53] ben_apex (~ben_apex@lister.hexoc.com) joined #highaltitude. [13:19] cool - my ft817 voltage meter was showing a >2v drop when transmitting. put a small clip-on ferrite on the power lead and it's now only 0.5v [13:20] Action: Laurenceb_ was thinking about psk transmission [13:21] i had an interesting idea- using a balun and rf switch you could do bpsk with a unmodulated ntx2 [13:21] might even be practical with a microstrip network [13:21] use the balun to reverse the phase? [13:22] yes [13:22] neat [13:22] at 434mhz, microstrip stuff is rather large [13:22] or just a long wire [13:23] coil of coax :P [13:23] i think wire wound is best [13:23] ill see whats avaliable [13:24] that would be a neat trick, how much rf would be lost in the switching? [13:24] <1dB if done properly [13:25] you can do pck by modulating the ntx2, but it wont be very coherent [13:25] this way would be really coherent [13:25] and would work with any module [13:28] might be simplest to make the blun by hand [13:28] most of the off the shelf stuff is tuned [13:32] diode switches work well [13:32] How coherent in phase is the ntx2? [13:34] Laurenceb_: gdb provided more info on the SIGFPE than strace did. I don't understand why there is the same code several times in sound.cxx; I guess my fldigi was configured differently to yours so it was using another one. Good that its now fixed ;) [13:44] thanks for the help [13:44] yeah sound.cxx seems very disorganised to me [13:44] SpeedEvil: ntx2 looks pretty clean - very little jitter [13:45] the drift is the most significant thing really [13:45] ah [13:45] so ntx2 -> unbalanced port -> 50 to 100 ohm unbalanced/balanced balun [13:46] then the switch is double throw between the two balanced ports of the balun [13:47] Action: SpeedEvil wonders what bpsk with another symbol comprised of no output is. [13:47] i suspect that the parasitic capacitance of the switch will mess up the impedance slightly [13:47] might need a small inductor or cap in there somewhere to cancel it out [13:48] unfortunately all the neat off the shelf smd baluns i can find are tuned and for higher frequencies [13:50] this would be very neat as you could use a conventional bpsk decoder with kostas loop and pll [13:50] Action: SpeedEvil wonders of ways round the balun. [13:51] I suppose most would end up somewhat assymetric. [13:51] the simple ways [13:53] there are inductor cap circuits [13:53] but i dont know if theyd work with the switch arrangement [13:53] need to get out spice i guess [13:59] aha http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=445-3994-1-ND [13:59] slightly high loss but its small [14:01] so pin 1 to ntx2 and pins 3 and 4 to the rf switch [14:02] actually only 1dB insertion loss at 434 [14:16] juxta (Bogaurd@ppp203-122-193-94.static.internode.on.net) left irc: Ping timeout: 240 seconds [14:33] combine that with jcoxons heated xtal technique and itd be pretty awesome [15:07] smea (~smealum@85-171-205-215.rev.numericable.fr) joined #highaltitude. [15:10] M0DTS_Rob (~rob@87-194-98-211.bethere.co.uk) joined #highaltitude. [15:41] jasonb (~jasonb@adsl-66-124-73-250.dsl.sntc01.pacbell.net) left irc: Ping timeout: 240 seconds [16:20] chris_99 (~chris_99@unaffiliated/chris-99/x-3062929) joined #highaltitude. 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[18:25] MrCraig (MrCraig@host81-151-212-19.range81-151.btcentralplus.com) left irc: Ping timeout: 240 seconds [18:30] MrCraig (MrCraig@host86-166-104-180.range86-166.btcentralplus.com) joined #highaltitude. [18:34] Zuph (~bradluyst@2001:470:8:626:222:43ff:fe71:9992) joined #highaltitude. [19:04] MoALTz (~no@92.8.25.126) joined #highaltitude. [19:09] Zuph (~bradluyst@2001:470:8:626:222:43ff:fe71:9992) left irc: Ping timeout: 260 seconds [19:14] kleinjt (~kleinjt@tarsonis.acad.rose-hulman.edu) left irc: Read error: Connection reset by peer [19:21] kleinjt (~kleinjt@tarsonis.acad.rose-hulman.edu) joined #highaltitude. [19:21] DagoRed (~dago@207-172-35-190.c3-0.eas-ubr15.atw-eas.pa.cable.rcn.com) joined #highaltitude. [19:38] Zuph (~bradluyst@2001:470:8:626:222:43ff:fe71:9992) joined #highaltitude. [19:40] shipit (~sumeet@173-164-226-91-SFBA.hfc.comcastbusiness.net) joined #highaltitude. [19:48] Upu (~Upu@ubn.upuaut.net) left irc: Read error: Connection reset by peer [19:48] Upu (~Upu@ubn.upuaut.net) joined #highaltitude. [19:49] Nick change: Upu -> Upu- [19:50] GW8RAK (~chatzilla@client-82-26-166-183.pete.adsl.virginmedia.com) left irc: Remote host closed the connection [19:52] WonTu (~WonTu@p57B53338.dip.t-dialin.net) joined #highaltitude. [19:52] WonTu (WonTu@p57B53338.dip.t-dialin.net) left #highaltitude. [19:58] Zuph (~bradluyst@2001:470:8:626:222:43ff:fe71:9992) left irc: Ping timeout: 260 seconds [20:03] http://angryflower.com/experi.html [20:03] lol [20:04] SpikeUK (~chatzilla@host86-164-153-247.range86-164.btcentralplus.com) joined #highaltitude. [20:05] SpikeUK (~chatzilla@host86-164-153-247.range86-164.btcentralplus.com) left irc: Changing host [20:05] SpikeUK (~chatzilla@pdpc/supporter/monthlybyte/spikeuk) joined #highaltitude. [20:06] Zuph (~bradluyst@2001:470:8:626:222:43ff:fe71:9992) joined #highaltitude. [20:08] Seen oglaf? [20:08] http://www.oglaf.com/ (mildly nsfw) [20:11] SpeedEvil *sigh* [20:11] we try to keep this place family friendly [20:12] Sorry - 4chan broke my family friendly filter. [20:13] Action: SpeedEvil will try harder. [20:14] I keep forgetting there are fragile little minds here occasionally. [20:17] http://www.gla.ac.uk/news/headline_183814_en.html fun [20:17] (massive parallelsim inside FPGA) [20:18] Zuph (~bradluyst@2001:470:8:626:222:43ff:fe71:9992) left irc: Ping timeout: 260 seconds [20:30] shipit (~sumeet@173-164-226-91-SFBA.hfc.comcastbusiness.net) left irc: Remote host closed the connection [20:32] Nick change: ms7821 -> msg [20:32] Nick change: msg -> ms7821 [20:35] SpeedEvil: woo oglaf! [20:40] Nick change: Nigey|Away -> Nigey [20:41] plop [20:59] Nick change: Nigey -> Nigey|Away [21:14] SpikeUK (~chatzilla@pdpc/supporter/monthlybyte/spikeuk) left irc: Quit: ChatZilla 0.9.86 [Firefox 3.6.13/20101203075014] [21:24] juxta (Bogaurd@ppp203-122-193-94.static.internode.on.net) joined #highaltitude. [21:25] morning juxta [21:26] morning Darkside [21:27] are you gonna do a launch announcement for todays launch? [21:30] haha adrian just hopped in his car [21:30] Simon-MPFH (~simon@phantom.mpfh.co.uk) left irc: Quit: Leaving [21:31] time to get ready then.. [21:31] nah wont bother to announce, but I have just setup the tracker [21:31] Lunar_Lander (~lunar_lan@p54A0771C.dip.t-dialin.net) joined #highaltitude. [21:31] hello [21:31] heya Lunar_Lander [21:32] how's life? [21:32] good good [21:33] mine too [21:33] just heading off to get ready for a launch today [21:33] ah [21:33] which one? [21:33] Horus 13 [21:34] ok, back soon [21:34] ok cu [21:38] Daviey (~Daviey@ubuntu/member/daviey) left irc: Excess Flood [21:46] Daviey (~Daviey@ubuntu/member/daviey) joined #highaltitude. [21:47] slothearn (~euclid@pool-96-249-157-79.hrbgpa.fios.verizon.net) joined #highaltitude. [21:52] SpeedEvil1 (~user@tor/regular/SpeedEvil) joined #highaltitude. [21:52] SpeedEvil (1000@tor/regular/SpeedEvil) left irc: Read error: Operation timed out [21:52] Nick change: SpeedEvil1 -> SpeedEvil [21:57] aaaargh [21:57] ok my dad has been notified juxta [21:57] he [21:58] he's going to try and decode [21:58] he'll also try and contact me at some point during the day on the radio [22:00] hi Darkside [22:01] hi [22:02] how's life? [22:03] good :P [22:06] yay [22:06] how is 13? [22:06] is it ready to launch? [22:07] i dont think juxta has left yet [22:08] i'll be out chasing a bureau balloon before the horus launch, so i won't be able to live tweet :P [22:08] ah [22:08] a "normal" weather balloon you mean? [22:08] yup [22:08] analog too [22:08] so we have to use RDF techniques [22:09] ah [22:09] btw [22:10] http://cgi.ebay.com/Vaisala-Radiosonde-RS80-15GH-Digital-GPS-WeatherStation-/170500453667?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item27b29e7523#ht_3769wt_1139 [22:11] wow only 10 pounts [22:11] thats super cheap [22:11] im buying 2 [22:12] It does not output proper GPS [22:12] what [22:12] I've got several [22:12] what eoes it do then [22:12] before i buy [22:12] However. [22:12] yeah it doesnt correlate a fix Darkside [22:12] whatwhatwhat [22:12] The string is _wonderful_ floss. [22:12] explain [22:12] you correlate it on the ground with a copy of the ephemris [22:12] holy crap [22:12] wow [22:12] so how do you do that? [22:13] software available? [22:13] there's a bit of software called sondemonitor [22:13] oh [22:13] yeah [22:13] i should write my own code to do it :D [22:13] what does it transmit? ASCII Data that you parse and decode? [22:13] no [22:13] can you snip off the transmitter of it and make it record the data onto a SD or so? [22:13] a horrible binary mess I think [22:13] aww [22:13] does a good job, but the author never worked out the FEC, so you get some bad cells [22:13] It's some horrible binary protocol that I looked for the specs a couple of ears ago, and had no luch at lal tracking down [22:13] hrmmm [22:13] well that sucks [22:13] It does have useful bits [22:13] might not buy any then [22:14] a pressure sensor, and thermocouple. [22:14] sondemonitor can output to a serial port though [22:14] I paid a couple of quid for mine, and the string has been totally worth that [22:14] hahaha [22:14] yeah ok [22:14] i'll get one then [22:14] depending ont eh chipping [22:14] Oh - they also have a nice wire GPS antenna [22:14] shipping* [22:14] yeah, the pressure sensor is calibrated out of the box, I think the temp sensors need calibration prior to launch [22:14] yeah can't you like disassemble its sensors? [22:14] a helical with a LNA after it [22:14] hmm surely theres not enough bandwidth for that [22:14] juxta: i've let my dad know, and he'll get VK5ALX to decode [22:14] oh nice, thanks :) [22:14] maybe it bumps short sections of data [22:14] and he'll have a go himself [22:15] *dumps [22:15] can it be that it's made so you have to have vaisala's receiver? [22:15] Of course [22:15] you can receive with regular amateur radio gear [22:15] Recieving isn't the problem, it's decoding [22:16] yeah [22:16] yes [22:16] i wonder what the hardware is like inside [22:16] SpeedEvil, http://www.coaa.co.uk/sondemonitor.htm [22:16] i have a few but never done a proper teardown [22:16] i guess turning on the transmitter would be illegal, right? [22:16] neat [22:16] it says it has a water activated battery [22:16] maybe use it a software gos [22:16] Lunar_Lander: yes [22:16] Lunar_Lander: it's in another sealed bag [22:16] *gps [22:16] yea [22:17] they work fine on AA's though ;p [22:17] juxta does sondemonitor decode what the vaisala xmits? [22:17] yes [22:17] Lunar_Lander: It fits in the rectangular cutout of the rectangle of the GPS that ousee there [22:17] yea [22:17] hmm i wont bother getting one atm then [22:18] btw, Vaisala gives away a book on their company history away for free [22:18] Laurenceb, http://projecthorus.org/wp-content/uploads/2009/12/IMG_32611.jpg [22:18] i asked them what the shipping is and they said it costs nothing [22:18] left hand side is one of the analogue sondes, right is the digital with GPS etc [22:18] oh wow thanks [22:19] all of the chips are labelled vaisalla though [22:19] the right is that RS-92 or so? [22:19] any chance of a higher res shot of the gps? [22:19] i cant make out the ic in the middle [22:19] Laurenceb, yeah, I have one I think, hold on [22:19] ooh they have custom silicon [22:19] very shiny [22:20] very expensive [22:20] i wonder what the micro in it is [22:21] zeusbot joined #highaltitude. [22:21] Tiger^ (tygrys@moo.pl) left irc: Read error: Operation timed out [22:21] Tiger^ (tygrys@moo.pl) joined #highaltitude. [22:21] actually, that could be a discreet downconversion chain [22:21] someone want to start the twitter follower? [22:21] follow #arhab [22:22] Laurenceb, got photoshop or similar? [22:22] theres certainly a lot of stuff inside the gps sheild [22:22] gimp yes [22:22] Darkside: is there a user to follow rather than a hashtag? [22:22] ok, hopefully gimp can open RAW files [22:22] ok [22:23] Laurenceb_, http://iSendr.com/DqSm [22:23] Randomskk: either projecthorus or darksidelemm [22:23] im thinking maybe its a discreet single conversion receiver [22:23] im not sure if juxta will be tweeting [22:23] I left it as RAW so that you can best manipulate the contrast etc [22:23] i won't be there for the launch, but i can still tweet some stuff as i hear it on the radio or whatever [22:23] ok adrian is on the move it seems [22:24] yeah I'll tyr to [22:24] im getting file unavaliable [22:24] oh thats odd [22:24] sec [22:24] thanks [22:24] well i think adrian is on his way here.. [22:24] Laurenceb_, http://bogaurd.net/laurenceb/ [22:25] thanks [22:25] SpeedEvil [22:25] are the sensors in the Vaisala good to be used on their own? [22:27] hey juxta [22:27] what's the payload? [22:28] GeekShadow (~Antoine@reactos/tester/GeekShadow) joined #highaltitude. [22:28] hey natrium42 [22:28] it's a video rig [22:28] oh shit adrian is almost here [22:28] aaaaaaaaaaaa [22:28] ok [22:28] haha [22:29] im heading off now too [22:29] cya :P [22:29] cya in a while Darkside [22:29] yup [22:29] I'll jump on irc when I get to the launch site [22:29] wind is <1km/h here [22:29] hopefully the same at launch [22:35] eroomde_ (~ed@nessie.habhub.org) joined #highaltitude. [22:35] juxta: whats the format of that raw file? [22:36] bits etc [22:36] juxta (Bogaurd@ppp203-122-193-94.static.internode.on.net) left irc: Ping timeout: 260 seconds [22:36] oh got it nvm [22:36] Darkside (~Darkside@hpavc/darkside) got netsplit. [22:36] eroomde (~ed@nessie.habhub.org) got netsplit. [22:37] Darkside (~Darkside@hpavc/darkside) returned to #highaltitude. [22:38] that square QFN (or whatever it is) towards the bottom of the gps area, any chance you could get a close up? [22:38] im trying to read the number [22:39] It's a custom thingy [22:39] it was a qfp at least the ones I got [22:39] I don;'t kknow where mine are at teh moment thouh [22:40] SpeedEvil [22:40] are the sensors in the Vaisala good to be used on their own? [22:41] In principle sure [22:41] however - I have not investigated this at all [22:41] yeah [22:42] thats annoying if everythings custom [22:42] guess its still worth probing around with a scope [22:43] It outputs a binary datastream. [22:43] see if theres any raw gps getting fired about [22:43] At a reasonable though not extreme datarate [22:43] bbl [22:43] there is one chip that takes GPS in and outputs the modem signals [22:47] eroomde (~ed@nessie.habhub.org) got lost in the net-split. [22:47] MrCraig (MrCraig@host86-166-104-180.range86-166.btcentralplus.com) left irc: [22:52] Syrill (~Azrael@cpe-72-134-52-220.socal.res.rr.com) joined #highaltitude. [22:53] is anything new? [22:54] Nick change: eroomde_ -> eroomde [22:54] Not really. [22:54] Darkside got all excited about the radiosondes on ebay that I suspect most of us have gotten excited about at one point or anotehr. [22:55] yeah [22:55] that is true [22:56] If you work out the GPS coding, you in principle have a cheap fairly-high-power, moderately light GPS, along with a cheap transmitter [22:57] yrah [22:57] yeah [22:57] and the sensors [22:58] You'd need to document those though [22:59] how do you mean? [22:59] i came up with a neat way to do psk [22:59] ntx2 + balun + rf swtich [23:01] ahem [23:01] neat? [23:01] totally hacked way XD [23:01] Lunar_Lander: work out what the voltages are [23:01] why not use one of thos co-ax relayes [23:01] you could probably get 31Hz outa them :p [23:01] http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=445-3994-1-ND [23:02] the switch is easy [23:02] ah thanks [23:02] you can get smd diode switches that switch in nanoseconds [23:02] smd baluns are a little hard to find - have to get from digikey [23:03] skyworks make tons of suitable switch stuff [23:03] for the sake of being kind to the rest of the spectrum, maybe a bpf? [23:03] heh probably [23:03] saw + amp [23:03] maybe [23:03] saw has high loss [23:03] LC filtering [23:03] hence the '+ amp' [23:03] smea (~smealum@85-171-205-215.rev.numericable.fr) left irc: Ping timeout: 255 seconds [23:03] yeah - i was trying to keep it simple [23:04] if you were going to those lenghts DDS + upconvertor is easier [23:09] or dds + bpf :) [23:12] chris_99 (~chris_99@unaffiliated/chris-99/x-3062929) left irc: Quit: Leaving [23:17] SpeedEvil (~user@tor/regular/SpeedEvil) left irc: Quit: Leaving. [23:17] SpeedEvil (1000@tor/regular/SpeedEvil) joined #highaltitude. [23:38] Lunar_Lander (~lunar_lan@p54A0771C.dip.t-dialin.net) left irc: Ping timeout: 255 seconds [23:39] Zuph (~bradluyst@69.64.6.70) joined #highaltitude. [23:45] suo [23:46] sup [23:46] heh [23:46] back to chasing BOM balloons [23:56] chris_99 (~chris_99@43.118.112.87.dyn.plus.net) joined #highaltitude. [23:56] chris_99 (~chris_99@43.118.112.87.dyn.plus.net) left irc: Changing host [23:56] chris_99 (~chris_99@unaffiliated/chris-99/x-3062929) joined #highaltitude. [23:57] chris_99 (~chris_99@unaffiliated/chris-99/x-3062929) left irc: Remote host closed the connection [00:00] --- Tue Jan 4 2011