[00:00] <SpeedEvil> So it will burst when the differential pressure is 0.7PSI (say). This means you need to work out at what altitude the balloon fills, then what altitude is 0.7 PSI higher than this - and that'll be about where it may burst
[00:01] <SpeedEvil> http://www.engineeringtoolbox.com/standard-atmosphere-d_604.html
[00:01] <SpeedEvil> 14.7PSI is sea level.
[00:01] <SpeedEvil> Say you half fill the balloon - then it will become full as it ascends to 7.35PSI.
[00:02] <SpeedEvil> And burst once it ascends to 6.6PSI
[00:02] <SpeedEvil> This is about 20000ft
[00:04] <cambazz> like 6-7 thousand meters.
[00:04] <SpeedEvil> yes.
[00:04] <cambazz> ok so i bought the wrong baloon. :)
[00:04] <SpeedEvil> What are you trying to do?
[00:04] <cambazz> go as high as possible
[00:05] <SpeedEvil> For that, you need a latex balloon.
[00:05] <SpeedEvil> The right ones will get you to 40km
[00:05] <SpeedEvil> Or close to it
[00:06] <cambazz> well i am looking at charts, but it seems the higher it goes as the baloon is bigger. (and more expensive in everything, and helium is not cheap as well)
[00:06] <cambazz> i am aiming for small payload design, and then go as high
[00:07] <cambazz> but i guess with these mylar baloons, like if i fill it up with 1/4 volume
[00:08] <cambazz> it will become full at 7.35*2 PSI
[00:08] <cambazz> but then will burst at what psi? or how did you calculate the 6.6psi
[00:09] <cambazz> oh, 7.35 - 0.7 right, where 0.7 is differential burst pressure
[00:11] <cambazz> hmm so it would be (7.35 / 2) - 0.7
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[00:41] <SpeedEvil> If you fill it to 1/4 volume, then it 's 14.7PSI (sea-level) /4
[00:42] <SpeedEvil> Or about 3.5PSI when it fills, and 2.8 when it bursts
[00:42] <SpeedEvil> But filled that little it may not go up
[00:42] <SpeedEvil> It has to lift the balloon and payload remember
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[00:46] <cambazz> ok have found this: http://ukhas.org.uk/projects:microballoons:data
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[02:27] <Dale__> Hello, everyone hit the sack yet?
[02:28] <Dale__> Not sure if anyone was following my university project, but nearly there now, appreciate all the help you guys have given!
[02:28] <Dale__> https://twitter.com/UOP_HAB
[02:29] <Dale__> Wouldn't be where I am at this stage otherwise
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[03:29] <peterbjo1nx> Soo, anyone here got any tips on filling the balloon
[03:47] <x-f> there are some tips on the wiki
[03:48] <x-f> choose a place for filling with less wind
[03:49] <x-f> start filling only after you have checked that your electronics are working as expected because there will be no way back
[03:49] <x-f> calculate the required neck lift more than once
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[04:40] Nick change: fl_0|afk -> fl_0
[04:51] Nick change: fl_0 -> fl_0|afk
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[05:42] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12http://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
[05:45] <SpacenearUS> New vehicle on the map: 03CALLSIGNsimon_chase - 12http://tracker.habhub.org/#!qm=All&q=CALLSIGNsimon_chase
[05:45] <SpacenearUS> New position from 03JACKAL after 039 hours silence - 12http://tracker.habhub.org/#!qm=All&q=JACKAL
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[05:48] <gary> morning
[05:48] Nick change: gary -> Guest34853
[05:49] <Guest34853> i have a problem with rtty, GPS connected it all becomes very noisy and harder to decode what have I not read! Thinking of changing out the module and or wondering if its the parsing not in sync.
[05:51] <daveake> power
[05:52] <SpacenearUS> New vehicle on the map: 03default_chase - 12http://tracker.habhub.org/#!qm=All&q=default_chase
[05:53] <Guest34853> via the pc at the minute same on a battery as well
[05:54] <Guest34853> I remove the data lines and all is good with the rtty
[05:54] <daveake> You'd better descrive what you mean by "noisy" then
[05:54] <Guest34853> NEO 6m ublox from hobbyking
[05:57] <Guest34853> well i am saying the word noisy, might be very wrong. I get 95% of the RTTY decoded with GPS data lines connected 99% green without
[05:57] <Guest34853> the sound varies very slightly
[05:57] <Guest34853> very
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[05:57] <daveake> OK doesn't sound like noise then (which would be spikes or wavering lines on the rtty signals)
[05:58] <daveake> Sounds more like your rtty timing is out
[05:58] <daveake> how are you doing the timing? timer interrupts? software delays?
[05:58] <Guest34853> ok thanks dave, thats a timing thing?
[05:59] <daveake> and is the GPS Rx done by hardware serial or software serial?
[05:59] <Guest34853> i am using your flextrack hardware serial
[05:59] <Guest34853> 0 and 1
[05:59] <daveake> not that then :)
[06:00] <daveake> what's the hardware setup?
[06:01] <Guest34853> Uno, resistors and ublox all on a wire loom rather than vero board
[06:01] <Guest34853> ntx2
[06:02] <daveake> Uno 3.3V supply is 50mA max
[06:02] <daveake> and the ublox peaks at over 100mA
[06:03] <Guest34853> oic so thats causing momentary wobbles with power draw
[06:04] <Guest34853> im sorry i know so little its dangerous!
[06:04] <Guest34853> the gps remains powered all the time, i am only pulling the data pins
[06:06] <Guest34853> i will get a green send every once in a while with it all connected just not reliable
[06:10] <SpacenearUS> New vehicle on the map: 03ZS6MDV-3 - 12http://tracker.habhub.org/#!qm=All&q=ZS6MDV-3
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[06:51] <Reb-SM0ULC> morrn
[06:51] <Reb-SM0ULC> cool with another african fligtht
[07:02] <SpacenearUS> New vehicle on the map: 03EI2KK_chase - 12http://tracker.habhub.org/#!qm=All&q=EI2KK_chase
[07:05] mikestir (~quassel@cpc10-brmb8-2-0-cust107.1-3.cable.virginm.net) joined #highaltitude.
[07:15] <SpacenearUS> New position from 03D-8 after 039 hours silence - 12http://tracker.habhub.org/#!qm=All&q=D-8
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[07:31] <SA6BSS> looks like D-8 is up
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[07:35] devtt (4e918d0c@gateway/web/freenode/ip. joined #highaltitude.
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[07:43] DL7AD (59cc8283@gateway/web/freenode/ip. joined #highaltitude.
[07:44] <SA6BSS> guess tihis is for D-8 backlog from the night APRS: AF5LI-11 on 144.800 MHz, DominoEX22 on 434.500 MHz USB, Backup Globalstar
[07:45] number10 (5689ce8e@gateway/web/freenode/ip. joined #highaltitude.
[07:49] <DL7AD> globalstar dont seems to work
[07:50] SQ7HJL (5f290f56@gateway/web/freenode/ip. joined #highaltitude.
[07:51] <SpacenearUS> New vehicle on the map: 03AF5LI-11 - 12http://tracker.habhub.org/#!qm=All&q=AF5LI-11
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[07:52] <SQ7HJL> Hi, where transmitted D8?
[07:52] <DL7AD> 434.500
[07:53] <SQ7HJL> thanx
[08:07] <SpacenearUS> New vehicle on the map: 03DF0AIS-11 - 12http://tracker.habhub.org/#!qm=All&q=DF0AIS-11
[08:09] <bertrik> !payload DF0AIS-11
[08:09] <SpacenearUS> 03bertrik: Can't find a flight doc matching your query
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[08:11] <bertrik> What would I need to receive DF0AIS-11? Is it probably 2m only?
[08:12] <DL7AD> 2m FM
[08:12] <DL7AD> aprs tnc
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[08:13] Nick change: Upu- -> Upu
[08:13] <bertrik> oh, I'm reading "DarĂ¼ber hinaus fliegt noch eine 70cm Bake mit, die auf 433.925 MHz mit abwechselnd in moduliertem CW(FM) und CW mit 60 Bpm sendet. ", I'll try to receive that
[08:13] <DL7AD> no this time everything 434.5MHz
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[08:58] <sq3dho> !payload D8
[08:58] <SpacenearUS> 03sq3dho: Can't find a flight doc matching your query
[08:58] <sq3dho> !payload D8
[08:58] <SpacenearUS> 03sq3dho: Can't find a flight doc matching your query
[08:58] <sq3dho> !payload D-8
[08:58] <SpacenearUS> 03sq3dho: Payload 03D-8 10(fdbb) 03$$D-8 - 03Primary DomEX - 03434.5 MHz USB 03DominoEX with speed 0322
[09:08] <adamgreig> what's the popular SDR software for linux?
[09:11] <adamgreig> gqrx any good?
[09:14] <fsphil> nice but buggy
[09:15] <fsphil> or gnuradio if you're hardcore
[09:15] <fsphil> don't think there is much else
[09:15] <fsphil> rtl_fm too I suppose
[09:15] <fsphil> there was another one but it was pretty awful
[09:15] <adamgreig> gnuradio is a bit more hardcore than I want for general messing
[09:16] <adamgreig> i want like... fldigi but it talks t omy sdr, really
[09:16] <adamgreig> just for playing radio amateur
[09:16] <fsphil> actually, more than I thought: http://radio.linux.org.au/?sectpat=SDR
[09:17] <fsphil> quisk was the one I was thinking of
[09:17] <fsphil> it just wouldn't work
[09:18] <fsphil> gqrx is the best bet for just scanning
[09:18] <fsphil> and as a bonus it doesn't look ugly
[09:19] <adamgreig> nice
[09:19] <adamgreig> and is in the ubuntu repos, easy
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[09:21] <fsphil> it needs an rtty demodulator :)
[09:21] <adamgreig> it doesn't have rtty demod! wow
[09:21] <adamgreig> can it pipe audio to fldigi?
[09:21] <fsphil> via pulseaudio
[09:22] <fsphil> however it has an option of sending the demodulated audio through udp packets
[09:22] <adamgreig> which fldigi can't receive? :P
[09:22] <fsphil> my copy kinda can, been working on it
[09:22] <fsphil> but the sample rate is all wrong
[09:23] <fsphil> gqrx spits out 48khz
[09:23] <fsphil> need to get libsamplerate going - fldigi already uses that elsewhere, so it shouldn't be too bad
[09:24] <adamgreig> ooh it's running
[09:24] <adamgreig> that was amazingly easy
[09:24] <adamgreig> apt-get install gqrx, and it immediately works with my hackrf
[09:24] <fsphil> oh nice
[09:24] <adamgreig> is quite pretty
[09:24] <fsphil> yea
[09:25] <fsphil> all the rest are typical amateur radio UIs
[09:25] <fsphil> not quite multi-psk bad, but not great
[09:27] <adamgreig> hehe
[09:29] <SpacenearUS> New vehicle on the map: 03FLYING_PI_chase - 12http://tracker.habhub.org/#!qm=All&q=FLYING_PI_chase
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[09:49] <mikestir> fsphil: gqrx uses gnuradio internally doesn't it? wouldn't it therefore be fairly trivial to add the samplerate conversion step at the gqrx end instead?
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[10:00] <fsphil> mikestir: actually could probably just use sox and netcat
[10:01] <fsphil> the problem still is that fldigi varies what samplerate it wants depending on the mode
[10:01] <fsphil> bbl
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[11:07] <peterbjx> I lost track of my HAB, could anyone in germany please tell me if they can see a RTTY (8N1 300) at 434.255
[11:10] <Geoff-G8DHE> Which callsign ?
[11:11] <peterbjx> none, it is using a binary encoding
[11:11] <peterbjx> should be recognizable though
[11:12] <peterbjx> starts with 0xAA55
[11:14] <peterbjx> 1 second repeating pattern
[11:15] <SpacenearUS> New vehicle on the map: 03KB4RSM - 12http://tracker.habhub.org/#!qm=All&q=KB4RSM
[11:21] <SpacenearUS> New vehicle on the map: 03KC3EMR-11 - 12http://tracker.habhub.org/#!qm=All&q=KC3EMR-11
[11:28] <SpacenearUS> New position from 03VE2WMG-11 after 038 days silence - 12http://tracker.habhub.org/#!qm=All&q=VE2WMG-11
[11:30] <Ian_> Sorry to hear about your difficulties peterbjx. The usual suspects appear from Germany appear to be absent today. Needless to say that you should have advertised your flight here or on the mailing list a few days ago.
[11:32] FLYING_PI (bc1da53a@gateway/web/freenode/ip. joined #highaltitude.
[11:33] <Ian_> Then you would probably have had more advice than you could shake a stick at and more importantly groundstations a plenty that knew about your launch and who could figure out how best to assist, given your non-standard binary encoded approach..
[11:34] <Ian_> We wish you Good Luck, please let us know if you achieve a successful recovery and come back soon.
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[11:46] <Ian_> Where was your launch from, at what time UTC and what was the general direction of flight please? Up down flight? So that others can be aware.
[11:46] <daveake> Ian_ peterbjx has quit (Quit: Page closed)
[11:47] <Ian_> Nothing heard on the German SDR Thanks Dave I went off looking for a German 70cm SDR
[11:48] <daveake> Well if the launcher has lost it it's probably down or dead. Shame there are so few details.
[11:48] <Ian_> Another win for HAB standardisation and early planning p*5 principle in action again.
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[11:50] <gary> howdo
[11:50] Nick change: gary -> Guest62366
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[12:18] <SpacenearUS> New vehicle on the map: 03MONDO-3 - 12http://tracker.habhub.org/#!qm=All&q=MONDO-3
[12:22] <SpacenearUS> New position from 03JACKAL after 036 hours silence - 12http://tracker.habhub.org/#!qm=All&q=JACKAL
[12:27] sumie-dh (~sumie-dh@rt01.komunikacnisite.cz) joined #highaltitude.
[12:27] <SpacenearUS> New vehicle on the map: 03K0SCC-11 - 12http://tracker.habhub.org/#!qm=All&q=K0SCC-11
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[12:28] <SpacenearUS> New vehicle on the map: 03AE0SS-13 - 12http://tracker.habhub.org/#!qm=All&q=AE0SS-13
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[12:30] <Guest62366> my rtty is not perfect but certainly one good report gets through every 5 minutes is that how eveybody operates?
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[12:31] <SpacenearUS> New vehicle on the map: 03KB3ZZI-9 - 12http://tracker.habhub.org/#!qm=All&q=KB3ZZI-9
[12:31] <daveake> no it should be close to 100% success
[12:31] <SpacenearUS> New vehicle on the map: 03W3EAX-9 - 12http://tracker.habhub.org/#!qm=All&q=W3EAX-9
[12:31] <daveake> post a screenshot of the dl-fldigi waterfall
[12:35] <mattbrejza> are you using a dongle on a crappy computer?
[12:36] <Guest62366> im using an Alinco DJ- X11 and a crappy computer
[12:38] <mattbrejza> well fldigi doesnt need a particulary good computer to run
[12:38] <mattbrejza> whats generating the timing of the rtty?
[12:38] <Guest62366> how to add a pic here?
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[12:39] <mattbrejza> imgur et al
[12:39] <Guest62366> oh a link...
[12:41] <Guest62366> http://www.suasnews.com/wp-content/uploads/2015/04/dlgrab.png
[12:41] <Guest62366> that just happened to be after a good one
[12:42] <mattbrejza> it doesnt corrupt the start or end
[12:42] <mattbrejza> are you using software serial and delay()?
[12:42] <mattbrejza> also turn the volume down a bit so the background noise is blue not yelow
[12:43] <Guest62366> ok will do that
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[12:46] <Guest62366> using hardware for GPS, Daves Flextrack
[12:47] <Guest62366> its gone altogether now that the volume is down
[12:47] <SpacenearUS> New vehicle on the map: 03KE0BMV-11 - 12http://tracker.habhub.org/#!qm=All&q=KE0BMV-11
[12:47] <SpacenearUS> New vehicle on the map: 03KC0UUO-11 - 12http://tracker.habhub.org/#!qm=All&q=KC0UUO-11
[12:54] <Guest62366> as soon as i pull the gps data pins but leave it powered life is fine
[12:56] <Guest62366> its just done 5 green with gps connected and now is mis reporting
[12:57] <daveake> post screenshots of dl-fldigi with and without gps connected
[12:57] <Guest62366> do i need to add more of a filter in dl?
[12:57] <daveake> your filter is too wide; set to auto
[12:57] <daveake> however your signal looks like it has psu noise on it
[12:58] <daveake> You using pwm or not?
[13:01] <Guest62366> data on pin 13
[13:02] <daveake> Yes but are you using pwm or not?
[13:02] <daveake> Also pin 13 has the LED on it; you might be better off using a different pin
[13:03] <daveake> afk 30 mins
[13:03] <Guest62366> Ok will try that, do I just reasign it?
[13:04] <Geoff-G8DHE-Lap> !flights
[13:04] <SpacenearUS> 03Geoff-G8DHE-Lap: Current flights: 03D-8 10(fdbb), 0328.27 50.62 70.23 144.67 RTTY200bd7n2 10(a69b), 03Flying Pi 10(d3e5)
[13:05] <Geoff-G8DHE-Lap> !flight Flying Pi
[13:05] <SpacenearUS> 03Geoff-G8DHE-Lap: Can't find a flight doc matching your query
[13:05] <Geoff-G8DHE-Lap> !flight d3e5
[13:05] <SpacenearUS> 03Geoff-G8DHE-Lap: Flight 10(d3e5): 03Flying Pi 10(1 payload) - Launch date 03Today at 11:00 from 03Dumfries and Galloway, UK 10(54.90139,-4.9439)
[13:05] <SpacenearUS> New vehicle on the map: 03W0ISU-11 - 12http://tracker.habhub.org/#!qm=All&q=W0ISU-11
[13:05] <Geoff-G8DHE-Lap> !payload d3e5
[13:05] <SpacenearUS> 03Geoff-G8DHE-Lap: Payload 039d700bfc4fea0a619c173a4b0cb5a61c 10(d3e5) 03$$FLYING_PI - 03PIE with sensors 300 baud - 03434.6875 MHz USB 03RTTY 300/880Hz ASCII-8 none 2
[13:05] <SpacenearUS> New vehicle on the map: 03W0ISU-10 - 12http://tracker.habhub.org/#!qm=All&q=W0ISU-10
[13:05] <Geoff-G8DHE-Lap> !dial d3e5
[13:05] <SpacenearUS> 03Geoff-G8DHE-Lap: Latest dials for 039d700bfc4fea0a619c173a4b0cb5a61c 10(d3e5): 03434.462 MHz
[13:06] <Geoff-G8DHE-Lap> !dial Flying_Pi
[13:06] <SpacenearUS> 03Geoff-G8DHE-Lap: Latest dials for 039d700bfc4fea0a619c173a4b0cb5a61c 10(d3e5): 03434.462 MHz
[13:07] <Geoff-G8DHE-Lap> Oh well not likely to hear it down here anyway :-(
[13:07] <lz1dev> !id d3e5
[13:07] <SpacenearUS> Flight 03Flying Pi 10(f5794cc42395aa9285d1d681b46cd3e5, approved, 1 payload)
[13:07] <SpacenearUS> Project 03Flying Pi by 03Flying Pi
[13:07] <SpacenearUS> Window: 03Yesterday at 23:00 UTC to 03Tomorrow at 22:59 UTC 10(Europe/London, +1)
[13:07] <SpacenearUS> Launch: 03Today at 11:00 UTC from 03Castle Kennedy Airfield, Stranraer  10(54.90139,-4.9439)
[13:07] <SpacenearUS> Raw: 12http://habitat.habhub.org/habitat/f5794cc42395aa9285d1d681b46cd3e5
[13:07] <lz1dev> huh
[13:08] <lz1dev> !id f5794cc42395aa9285d1d681b45e96e4
[13:08] <SpacenearUS> Payload config 039d700bfc4fea0a619c173a4b0cb5a61c 10(f5794cc42395aa9285d1d681b45e96e4) - 12http://habitat.habhub.org/habitat/f5794cc42395aa9285d1d681b45e96e4
[13:08] <SpacenearUS> Callsign(s): 03FLYING_PI
[13:08] <SpacenearUS> Transmission #0: 03PIE with sensors 300 baud - 03434.6875 MHz USB 03RTTY 300/880Hz ASCII-8 none 2
[13:08] <SpacenearUS> Last parsed: 035 minutes ago
[13:08] <lz1dev> ok he named it with a hash
[13:08] <lz1dev> :|
[13:10] <Guest62366> MOving the pin from 13 to 11 worked thanks Dave and all. May launch tomorrow Am here in South Africa low level flight to check the tracking
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[13:25] <hiflyer> hi everyone, im trying to get the dominoex 16 working but its a real pain to get the 15.625hz shift correct using resistors. has anyone got any tips to get the correct resistor value (may i ask what resistor value worked for you - i approximate it at 200k ohms)?
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[13:29] <AdamDynamic> I'm trying to work through the steps of getting my PITS board to decode in fldigi via a SDR dongle and SDR Sharp
[13:29] <AdamDynamic> I can see a 'spike' in SDR# when I plug in the PITS board but I can't "hear" anything
[13:29] <AdamDynamic> Should I be able to?
[13:36] <SpacenearUS> New vehicle on the map: 03AE0SS-12 - 12http://tracker.habhub.org/#!qm=All&q=AE0SS-12
[13:37] <mikestir> hiflyer: I think there's some evidence that it just doesn't work with resistors - not over temperature anyway
[13:38] <lz1dev> !aprs ping aeoss*
[13:38] <SpacenearUS> 03lz1dev: No matches found
[13:38] <lz1dev> !aprs ping ae0ss*
[13:38] <SpacenearUS> 03lz1dev: Latest contact: 03AE0SS-3 10(a month ago), 03AE0SS-12 10(a few seconds ago), 03AE0SS-13 10(2 minutes ago)
[13:38] <hiflyer> ah, was just following this tutorial - http://ukhas.org.uk/guides:linkingarduinotontx2
[13:39] <mikestir> yeah. Jededu flew something recently and when it cooled down it became impossible to demodulate it. worked to begin with though
[13:42] <hiflyer> was he using the ntx2b which has tcxo (http://ukhas.org.uk/guides:radio_modules:ntx2)?
[13:43] <mikestir> think so. I seem to recall he thought it was the symbol timing that had drifted rather than the tone spacing, but really they are supposed to be coherent (i.e. timing and shift derived from the same clock source), so I wouldn't want to risk doing it via a frequency-pulling method
[13:44] <hiflyer> so what would you recommend?
[13:46] <mikestir> custom Si4060 based transmitter seems to be the favoured way. you need to use an out of spec crystal frequency, but it works fine
[13:47] <mikestir> I think Upu had some success with pulling an ntx2 - maybe he has a view
[13:48] <Upu> Domino ?
[13:48] <Upu> don't bother
[13:48] <Upu> it drifts off
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[13:49] <Upu> I think the resistor or the transmitter causes the tones to go out of spec
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[13:55] <craag> There might be a payload up transmitting on 434.475MHz 300baud, from South-west scotland.
[13:55] <craag> (FLying Pi)
[13:56] <craag> They've lost the signal
[14:00] <mikestir> where's it predicted to be?
[14:01] <craag> Not a clue - was launched from stranraer.
[14:01] <craag> That's all the info I have.
[14:03] <mikestir> predictor says east
[14:03] <mikestir> nothing heard here anyway
[14:05] Action: mfa298 wonders if it was even working before they let it go. or whether they just assumed it would work as they let it go
[14:05] <mattbrejza> have they ever been on here?
[14:05] <mfa298> a few times I think
[14:06] <mikestir> I have a carrier around .476 that stops for half a second or so occasionally
[14:07] <mikestir> weak though
[14:07] <mfa298> grep has hits for 8th and 10th
[14:07] <craag> mfa298: The've been in #habhub
[14:07] <craag> Got that info just now
[14:07] <craag> but they've pinged out
[14:07] <mfa298> I saw that just now
[14:08] <craag> It was only a couple of days ago that I helped them fix their dl-fldigi shift though
[14:08] <craag> so sounds like a real rush job
[14:08] <mfa298> #ha log on the 8th had them asking for help getting the flight doc approved having not tested it yet
[14:09] <Upu> when was it launched ?
[14:09] <craag> 'just launched' as of 14:45 local
[14:09] <Upu> and lost already ?????
[14:09] <mfa298> from #habhub
[14:09] <mfa298> 14:45 < Flying_Pi> Hello, Can you please listen out for our payload which we just launched from stranraer. We need someone to search for our payload. The transmitting frequency is 434.475Mhz
[14:09] Action: Upu shrugs
[14:10] <Upu> I'll have a listen out shortly
[14:10] <craag> It's the pits board that the shift was set to 600hz on.
[14:10] <mattbrejza> personally i would set them all to 600 ;)
[14:10] <craag> Haven't heard anything since after pointing them at the wiki for working out the required resistor value
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[14:22] <Upu> right what frequency ?
[14:23] <mikestir> supposed to be .475 - I have a very weak carrier on .477 ish but it hasn't changed signal strength so I assume it's just QRM
[14:24] <Upu> nothing seen here
[14:24] <Upu> will probably need to be high though as I have hills behind me
[14:24] <Upu> I'll keep watching
[14:24] <mikestir> I'd have a decent view from here - it's more or less entirely a sea path
[14:29] <Guest62366> I see they are moving so maybe they have other means
[14:42] <Guest62366> I'm enjoying their drive I used to be in the RAF at Prestwick so spent many hours in those hills and perhaps more in the pubs around there
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[14:43] <mikestir> G4FUI_phablet: you're near penrith aren't you? got anything around .475?
[14:44] <G4FUI_phablet> Just logged in to see what's going on - better fire the radio up!
[14:45] <mikestir> launch from stranraer - they lost the signal
[14:45] <G4FUI_phablet> (Yes I'm in Penrith ...)
[14:47] <G4FUI_phablet> Just noticed a chase vehicle in Castle Douglas
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[14:50] <Martin_G4FUI> what am I looking for, and what's the last reported frequenceY?
[14:51] <mikestir> 300 baud rtty. nominally on .475 but I don't think anyone has actually heard it
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[14:52] <Martin_G4FUI> continuous transmission?
[14:53] <mikestir> guess so
[14:56] <Martin_G4FUI> Nothing but white noise here :(
[14:57] <Guest62366> might be able to df it if lucky bumpy ground though
[14:57] <mikestir> I'd assume it's probably not transmitting
[14:57] <SA6BSS-Mike> or lost it antenna
[14:59] <SpacenearUS> New vehicle on the map: 03KD9AUK-11 - 12http://tracker.habhub.org/#!qm=All&q=KD9AUK-11
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[15:07] <mattbrejza> perhaps gps and 434 antennas are the wrong way round
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[15:16] <SpacenearUS> New vehicle on the map: 03AUGUSTE1_chase - 12http://tracker.habhub.org/#!qm=All&q=AUGUSTE1_chase
[15:20] <SpacenearUS> New vehicle on the map: 03KD8CJT-11 - 12http://tracker.habhub.org/#!qm=All&q=KD8CJT-11
[15:23] <SpacenearUS> New position from 03EOS_T2 after 032 days silence - 12http://tracker.habhub.org/#!qm=All&q=EOS_T2
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[15:26] <SpacenearUS> New vehicle on the map: 03KC3DYS-11 - 12http://tracker.habhub.org/#!qm=All&q=KC3DYS-11
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[15:49] <hiflyer> so is using an ntx2b with rtty feasible for hab?
[15:49] <Guest62366> hope so thats what i want to do ;-)
[15:51] <SA6BSS-Mike> yes it will work absolutly great in a hab :)
[15:52] <hiflyer> great, is there any kind of error checking required?
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[16:18] <Ian_> On the transmitted data string it is customary to generate a four character CCITT-16-CRC, but there are libraries that make that fairly trivial.
[16:19] <SpacenearUS> New position from 03KA7NSR-13 after 033 days silence - 12http://tracker.habhub.org/#!qm=All&q=KA7NSR-13
[16:21] <SpacenearUS> New position from 03KA7NSR-15 after 033 days silence - 12http://tracker.habhub.org/#!qm=All&q=KA7NSR-15
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[16:24] <LuckyLuke> hi all. i wanted to start experimenting with radio transmission and ordered NTX2B from radiometrix.
[16:25] <LuckyLuke> i then discovered that habhub is offering NTX2B-FA version
[16:25] <LuckyLuke> can someone explain what's the difference ?
[16:29] <craag> The FA is Frequency Agile. You can reprogram the frequency using a serial interface on the EN pin.
[16:29] <craag> LuckyLuke: ^^
[16:30] Lunar_Lander (~kevin@p54889A1C.dip0.t-ipconnect.de) joined #highaltitude.
[16:30] <craag> Good evening Lunar_Lander
[16:30] <Lunar_Lander> good evening craag
[16:30] <Lunar_Lander> how is life?
[16:31] <craag> good ta
[16:31] <craag> the websdr has been taken over by russians today
[16:31] <Lunar_Lander> oh
[16:31] <craag> they hit the 40 users limit earlier :D
[16:31] <craag> (ISS is doing SSTV this weekend to celebrate Cosmonauts Day)
[16:32] <Lunar_Lander> cool!
[16:32] <craag> Next pass in 49 minutes and we've already got 30 on. Limit is up at 80 now ;)
[16:33] <LuckyLuke> craag: i'm having a look at ntx2 datasheet now and there's a section on reprogramimng through EN pin - it's not the same as *FA version I guess ?
[16:33] <Lunar_Lander> :)
[16:33] <craag> LuckyLuke: Can you link the datasheet?
[16:34] <LuckyLuke> http://radiometrix.com/files/additional/ntx2bnrx2b_0.pdf
[16:34] <craag> Ah hmm, that sounds like the same thing
[16:35] <craag> Maybe they're doing it on all of them now
[16:35] <LuckyLuke> nice:)
[16:35] <craag> Upu would be the man to ask
[16:35] <LuckyLuke> so I don't need to return my shipment
[16:35] <craag> Have you tried programming it?
[16:36] <LuckyLuke> no, I haven't received it yet
[16:36] <LuckyLuke> actually - I have not done anything radio related before !
[16:36] <craag> :)
[16:36] <LuckyLuke> I oredered a bunch of gear to get my fingers wet...
[16:36] <craag> The NTX2B datasheet still doesn't mention it http://www.radiometrix.com/files/additional/NTX2B.pdf
[16:37] <craag> So it may be luck as to whether you've got a newer version with the FA firmware.
[16:37] <Upu> where did you order it from ?
[16:37] <LuckyLuke> directly from radiometrix
[16:38] <Upu> unlucky then :)
[16:38] <Upu> it just turns it off and on
[16:38] <craag> He linked the NTX2B/NRX2B datasheet above that mentioned the FA feature..
[16:38] <Upu> does it ?
[16:39] <Upu> where ?
[16:39] <Upu> Factory programmable to any custom frequency within 420MHz - 480MHz band
[16:39] <Upu> I suspect you can program it via EN
[16:39] <Upu> but I don't know what the commands are
[16:39] <craag> User programmable custom frequencies
[16:39] <craag> 4 EN/PGM
[16:39] <Upu> heh
[16:39] <craag> http://radiometrix.com/files/additional/ntx2bnrx2b_0.pdf
[16:40] <Upu> oh interesting didn't think they'd made that public
[16:40] <Upu> so yes you can program it
[16:41] <Upu> not quite as easy as ours
[16:41] <Upu> thats interesting as the official NTX2B data sheet doesn't discuss that
[16:41] <LuckyLuke> beginners luck then :)
[16:42] <craag> Yep, although this DS is July 2014, vs Aug 2013 for the NTX2B one.
[16:42] <Lunar_Lander> nintendo DS :P
[16:43] <Upu> well not really you should have come to me would have been cheaper :)
[16:43] <Upu> but for next time
[16:43] <LuckyLuke> this was impulse shopping :)
[16:43] <LuckyLuke> after year or so reading Dave Akerman's blog (and others) I had to finally make first step
[16:43] <craag> Don't shop at hab supplies if you're one for impulse buying
[16:44] <craag> Still trying to get rid of all my gps modules :P
[16:44] <craag> Threw one into the channel a few weeks ago (on a balloon) and a frenchman has posted it back! arggh!!
[16:44] <LuckyLuke> I'll need one definitely
[16:44] <craag> Yeah the ublox gpses on there are very good
[16:45] <LuckyLuke> send it over to Poland... it won't get back to you most probably ;]
[16:46] <SA6BSS-Mike> nop, they put a new balloon on and sens it up again :)
[16:46] <LuckyLuke> are there any tutorials on connecting UBlox to raspi or arduinos ?
[16:46] <craag> Heh
[16:46] <craag> !wiki ublox
[16:46] <SpacenearUS> 03craag: Wiki page 03ublox6 (guides) - 12http://ukhas.org.uk/guides:ublox6
[16:46] <SpacenearUS> 03craag: Wiki page 03ublox_psm (guides) - 12http://ukhas.org.uk/guides:ublox_psm
[16:47] <craag> That's aimed at hab stuff with arduino
[16:47] <craag> It's NMEA, so on a Pi you can use gpsd or a nmea parsing library
[16:47] <LuckyLuke> thanks
[16:48] <craag> If you're planning to fly it on a balloon - they do need programming into 'Flight mode' to work above 12km, but that's all explained on the wiki page for you.
[16:49] <LuckyLuke> I'll do the reading tonight
[16:51] <adamgreig> Upu: the radiometrix page for the ntx2 has always linked to the datasheet that details how to program it over EN..?
[16:51] <adamgreig> -?, it has
[16:51] <adamgreig> right when they first came out and weren't available to buy the official RM datasheet gave instructions on programming it via EN
[16:54] <LuckyLuke> thanks guys for help. I'll drop in later with new questions :)
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[16:55] <Lunar_Lander> found a mobile HAB tracking center
[16:55] <Lunar_Lander> http://www.ebay.de/itm/Woodie-Love-Bug-Amerikanischer-Wohnwagen-Aussenhaut-aus-Holz-und-Aluminium-/331527057553?&_trksid=p2056016.m2516.l5255
[16:57] <Lunar_Lander> (joking) :P
[16:59] <Guest62366> Ah here's Flying Pi and there GSB entry http://www.balloonchallenge.org/teams/194
[16:59] <Guest62366> here even better http://flyingpi.co.uk/
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[17:04] <mikestir> should have spent as much time on their tracker as they did on that website :)
[17:06] <lz1dev> sss/fq 5
[17:06] <lz1dev> yeah
[17:06] <Ian_> What, no senior tracking vice president? I can see that Daniel is going to have to cuff it with the explanations as Connor isn't going to have much data to analyse.
[17:06] <lz1dev> im pretty sure they didnt make that
[17:07] <Ian_> Obviously forgot to read their own blurb: "A Tracker  This is for us to monitor the balloon, tracking its altitude, GPS location. It also aids us in finding the payload once it lands."
[17:08] <Ian_> Watch the pictures get fuzzed out . . .
[17:09] <lz1dev> found it
[17:09] <lz1dev> https://wrapbootstrap.com/theme/me-flat-flat-personal-portfolio-WB094T9L8
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[17:13] <Guest62366> Can't blame them for having a swish site, they are moving so maybe they had a secondary tracker on board and its doing its job
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[17:19] <Jacobz> Hello
[17:19] <Jacobz> So I am miserably failing at trying to setup dl-fldigi
[17:20] <Jacobz> And I'm trying to follow the steps listed on the ukhab website
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[17:20] <Jacobz> But I'm thinking there's something wrong with the way I'm setting up my radio with the software, but not sure what ;p
[17:21] <mikestir> what radio is it?
[17:21] <Jacobz> Funcube Pro+
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[17:26] <x-f> what program are you using the get the sound out of it?
[17:27] <Jacobz> Dl-fldigi, right?
[17:28] <x-f> ah, it won't work directly like that
[17:28] <Jacobz> Ah... dang. I'm such a noob >.<
[17:29] <x-f> it's ok, you're not the first with such question :)
[17:29] <x-f> you have to use some program to get the sound out of your radio, then route the sound to dl-fldigi
[17:29] <x-f> first part is usually done with SDRsharp or gqrx
[17:29] <x-f> depends on if you're on Windows or not
[17:30] <Jacobz> OSX :P
[17:30] <x-f> then gqrx
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[17:30] <x-f> SdrDx works too, but it has an interesting GUI..
[17:31] <Jacobz> Gotcha :P Lemme grab it quickly..
[17:31] <x-f> for sound routing use SoundFlower
[17:32] <Guest62366> I use sdr # and windows stereo mix to pipe in the sound
[17:35] <x-f> i would gladly pay for SDRsharp if it was available for OSX
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[17:35] <Jacobz> So opened gqrx, then it asks to configure I/Q input
[17:35] <Jacobz> Is that where I'll find the radio?
[17:36] <Jacobz> Under devices :P
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[17:36] <x-f> probably, i'm just a theoretical expert
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[17:37] <x-f> gqrx disables keyboard on my Mac, so i won't launch it :)
[17:38] <Jacobz> Oof lol
[17:38] <Jacobz> That's a nasty bug
[17:41] <x-f> do you hear the radio now and see the waterfall?
[17:46] <Jacobz> Notyet S:
[17:46] <Jacobz> I don't think the software can find the funcube, so I'm looking around for drivers
[17:46] <x-f> there are no drivers for FCD
[17:48] <x-f> if you plug it in, go to System Preferences -> Sound -> Input, do you see your FCD there?
[17:50] <Jacobz> Yes
[17:52] <x-f> and nothing in GQRX I/O input settings?
[17:53] <x-f> I/Q input*
[17:54] <Jacobz> RTL_SDR spectrum server, and complex
[17:55] <Jacobz> complex sampled IQ File*
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[17:58] <KF5WYX> Evening all
[17:59] <Jacobz> Howdy
[18:00] Action: KF5WYX is in a minor panic - flight in 2 weeks, firmware not complete.
[18:01] gb73d (~gb73d@81-178-188-159.dsl.pipex.com) left irc:
[18:02] <adamgreig> loads of time
[18:02] <adamgreig> i'm lucky if the pcb design is complete at T-2w
[18:02] <adamgreig> firmware is a twinkle in the eye
[18:03] <KF5WYX> lol perhaps you're right. I have afsk and am reading the nmea string. Just need to parse the string, package as APRS, layer onto AX.25 and transmit.
[18:04] <x-f> Jacobz, did you launch gqrx when FCD was already plugged in?
[18:05] <Jacobz> I did
[18:05] <Jacobz> Trying a reinstall of the software right now :P
[18:05] <SpacenearUS> New vehicle on the map: 03WB8ELK-1 - 12http://tracker.habhub.org/#!qm=All&q=WB8ELK-1
[18:07] <SpacenearUS> New vehicle on the map: 03KJ4TDM-1 - 12http://tracker.habhub.org/#!qm=All&q=KJ4TDM-1
[18:09] <Guest62366> what antennas to most folks favour?
[18:09] <KF5WYX> Can anyone explain the transmit delay I see in implementations of AX.25? Surely a packet starts, and a packet ends, what's the delay about?
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[18:09] <Guest62366> thinking about knocking one of these up http://www.reocities.com/n2uhc/bicone.html
[18:10] <gonzo_nb> probably it's to give the tx time to key up and the squelch on the rx to open
[18:11] <KF5WYX> I see, so open the carrier wave, give it a momentary delay, then tx the packet.
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[18:27] <Geoff-G8DHE-Lap> KF5WYX, Its about checking the channel before transmitting and delaying if it hears traffic
[18:30] <KF5WYX> Geoff-G8DHE-Lap, I am tx only, can't listen. If I understand correctly I should send some pre-fixed number of AX.25 flags. I've gone for 45 flags == 300ms delay @1200 baud. Sound about right?
[18:31] <Geoff-G8DHE-Lap> So your going to block the channel for even longer .... I've not got the AX-25 protocol spec. here with me at present but I'm sure it says something on thematter ..
[18:32] <KF5WYX> I have a copy, I'll refer back to it again - though I find it all quite confusing.
[18:35] <Geoff-G8DHE-Lap> Yes the flag is sent to Start and End a frame only one needed.
[18:35] <KF5WYX> Thank you. I'll tx only one.
[18:37] <Geoff-G8DHE-Lap> See 2.2.11 Interframe Time Fill only other time a Flag is sent
[18:37] <gonzo_nb> Guest62366, bicone ants are great for wide band, but don't have any gain. For narrow band work, you can use antennas with gain
[18:44] <db_g6gzh> KF5WYX: in practice you'll probably need to send more than one flag at the start to allow for the receiving system to settle and acquire bit sync
[18:44] <SpacenearUS> New vehicle on the map: 03KA7NSR-15 - 12http://tracker.habhub.org/#!qm=All&q=KA7NSR-15
[18:45] <KF5WYX> db_g6gzh, then I guess I'll write the software with a tunable number of opening flags, and tune the number until my radio is happy with it.
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[18:46] <db_g6gzh> you're somewhat at the mercy of how well the receiving stations work so probably best to send a few more than the minimum needed by your own
[18:46] <KF5WYX> *nods. Makes sense.
[18:47] <KF5WYX> I also need to make sure my digi-path string is not offensive. I found a good article on that once, so I'll re-read.
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[18:58] <Jacobz_> When using soundflower
[18:58] <Jacobz_> Is it recommended to use the 2ch or 64ch option?
[18:59] <SpacenearUS> New vehicle on the map: 03KA7NSR-15 - 12http://tracker.habhub.org/#!qm=All&q=KA7NSR-15
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[19:19] <Jacobz_> Hey x-f, are you still here by chance?
[19:19] <KF5WYX> http://pastebin.com/4ysQ6zpz <-- partial source. My Arduino C++ compiler claims that _gpgga is out of scope (line 40 of the paste). Can anyone help?
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[19:21] <x-f> Jacobz_, use 2ch
[19:21] <Jacobz_> Done, thanks. So now on the dl-fldigi side, I set audio capture to Soundflower 2ch?
[19:22] <x-f> yep
[19:23] <Jacobz_> Allrighty haha :P One step closer
[19:23] <Vaizki> KF5WYX, so line 31 doesnt error?
[19:24] <KF5WYX> Vaizki, it does if I comment line 40. I think the compiler / IDE is just feeding the errors backwards.
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[19:25] <Vaizki> too many }
[19:26] <KF5WYX> Vaizki - I thought the same, but I just found the problem. The MAX_STRING constant has no data-type, so in fact, the error was there but the IDE obscured that.
[19:26] <KF5WYX> It's a very old version of the Arduino tools.
[19:26] <Vaizki> argh
[19:26] <Vaizki> dump arduino
[19:28] <KF5WYX> yup. Thanks for looking.
[19:28] <KF5WYX> I'd assumed it was me, cos I'm not a C++ dev
[19:29] <KF5WYX> and of course it was me, but I feel somewhat vindicated in blaming the tools
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[19:47] <Jacobz_> x-f, in dl-fldigi.. under Rig setting, is there a specific option I should use?
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[19:53] <x-f> no, no need to touch that tab
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[19:59] <Jacobz_> Oh.. shoot
[19:59] <Jacobz_> I've found my Pi broadcasting on Gqrx
[19:59] <Jacobz_> But I can't get any data to pop up on fldigi
[20:02] <Jacobz_> http://gyazo.com/06eb32e9337f04424faf61487a42552f
[20:02] <Jacobz_> http://gyazo.com/e3bf29013caf4c6c08381d8f23c593b4
[20:02] <Jacobz_> Those are the two screens that I am currently seeing
[20:03] <pc1pcl> you are aiming to see a similar waterfall on the fldigi side,
[20:04] <pc1pcl> what is gqrx set to for demodulating? should be USB.
[20:04] <pc1pcl> (receiver options tab on the top right window)
[20:05] <pc1pcl> (and on the bottom right sub-window, probably handy to switch to the audio tab)
[20:06] <pc1pcl> the light gray area on the main waterfall will be demodulated, at the moment looks lik it's on both sides of the signal, so not very likely to be set to SSB)
[20:06] <Jacobz_> Ahh, gqrx wasn't set to USB. Waterfall is now on fldigi
[20:06] <Jacobz_> Thank you :)
[20:07] <pc1pcl> hopefully it is decodeing right away, but probably you'll have a bit more to fiddle.
[20:08] <Jacobz_> Isn't decoding, so seems I'm missing something
[20:09] <pc1pcl> on the gqrx side, switch off all bells and whistles, it should just do USB demodulation and send it on to fldigi via the audio link. so check for any fancy filtering etc, and if it's on, switch it off.
[20:09] <Upu> jacobs nothing is going through to dl-fldigi
[20:09] <pc1pcl> then on the dl-fldigi side make sure you have the RTTY-settings set up to match what the Pi is sending.
[20:10] <Upu> see the small black diamond next to AFC bottom right
[20:10] <Upu> make it green
[20:10] <Upu> by increasing the output volume of gqrx
[20:10] <pc1pcl> Jacobz_: and yeah time for a new screenshot of fldigi now that gqrx is set to usb..
[20:11] <Jacobz_> http://gyazo.com/c62b70904637b1d82ead0b7fc24d9192 Almost got it.. just not decoding 100% properly I think
[20:11] <Upu> ok better so bring the shift down in RTTY settings
[20:12] <pc1pcl> red lines need to overlap the center of the yellow ones
[20:12] <Upu> the 2 red lines in the water fall need to be on the peaks of the yellow ones
[20:12] <Upu> you have shift set to 910
[20:12] <Upu> try 600
[20:12] <Upu> and turn SQL off bottom right
[20:13] <pc1pcl> also might want/need to set the 'filter width' a little wider in the rtty settings.
[20:14] <pc1pcl> since dl-fldigi only has 3000 Hz wide of actual info on the waterfall, might be useful to set the 'x1' to something larger so the widht of the creen is used more.
[20:14] <SpacenearUS> New vehicle on the map: 03ZINOO2 - 12http://tracker.habhub.org/#!qm=All&q=ZINOO2
[20:15] <adamgreig> cna you zoom in gqrx?
[20:16] <adamgreig> I guess just reduce my sampling rate hah
[20:16] <Jacobz_> http://gyazo.com/53a4c7343008c609dd36157b46828aec
[20:16] <pc1pcl> adamgreig: you can, need a scroll wheel on the mouse.
[20:17] <pc1pcl> adamgreig: then put mouse pointer on the horizontal scale and turn the scroll wheel to zoom.
[20:17] <pc1pcl> Jacobz_: Shift seems right now, just need to click a little to the left so red bars and thick yellow ones overlap
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[20:19] <Jacobz_> Whenever I click them to overlap, the red bars slowly drift out
[20:19] <Upu> turn AFC off
[20:19] <pc1pcl> aFC next to SQL button.
[20:19] <Upu> let it run for 10 seconds if no decode
[20:19] <Upu> press RV
[20:19] <Jacobz_> AFC has been disabled
[20:19] <Upu> I think you're tuned into the wrong side band
[20:20] <Jacobz_> Oh.... That might explain.. haha
[20:20] <Upu> just a theory if it decodes with RV pressed
[20:21] <Jacobz_> It does not decode with RV pressed
[20:21] <Upu> give it 30 secs or so
[20:21] <Jacobz_> Okay
[20:21] <pc1pcl> speed set to 75, is that the setting the Pi is se tto too? also check you have the right encoding, maybe take a screen shot of the RTTY settings window of dl-fldigi, to see if anything funny is selected there?
[20:21] <Upu> what is transmitting the signal ?
[20:22] <Jacobz_> PITS
[20:22] <Upu> ah ok check your RTTY settings are 8N2
[20:22] <Upu> oh
[20:22] <Upu> your speed is set to 75
[20:22] <Upu> its 300 by default
[20:23] <pc1pcl> with speed 300 you probably want wider red bars,
[20:23] <Jacobz_> http://gyazo.com/bec7be3a7009d9560be76bceb16f62d6 + my settings
[20:23] <Upu> oh
[20:23] <Upu> well wrong
[20:23] <Upu> 8 bits per character
[20:24] <Upu> none parity
[20:24] <Upu> 2 stop bits
[20:25] <pc1pcl> Maybe remove 'v' at Auto for receive filter bandwith?
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[20:26] <Jacobz_> Done. Only change in decoding is less line breaks... messages are still encoded
[20:26] <Upu> have you got the camera plugged in ?
[20:26] <JDat> ZINNo2 is only test from 2013
[20:26] <JDat> Just lounched zinoo2.
[20:27] <JDat> Batteries from 2013 are in grat shape.
[20:27] <JDat> GPS working.
[20:27] <Jacobz_> Camera is plugged in, yes
[20:27] <JDat> Video transmitter batteries not tested.
[20:27] <Upu> if you disconnect the antenna all it will transmit is telemetry which should make it easier
[20:28] <Jacobz_> Okay
[20:29] <Jacobz_> http://gyazo.com/3f586c0d84f70949a9f1afd5f67d8a89
[20:35] <Upu> show me the grwhatever it is again
[20:36] <Jacobz_> http://gyazo.com/fc4679e1a84e86229bcb327132078b3a
[20:37] <Upu> did you specifically set the frequency to something other than default ?
[20:37] <Jacobz_> Oh god
[20:37] <Jacobz_> I was tuned to the wrong broadcast
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[20:37] <Upu> :)
[20:37] <Jacobz_> I'm such a bloody idiot
[20:37] <Upu> nope
[20:37] <Upu> its confusing as sometimes the "echos" are stronger than the actual signal
[20:38] <Jacobz_> Ahh
[20:38] <Jacobz_> Yeah
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[20:38] <Jacobz_> Because I was getting partial decoding from that stronger signal
[20:41] <Jacobz_> Anyways, when it decodes an imagine packet, where does it download to my computer?
[20:41] <Jacobz_> Or where do I access it
[20:43] <Upu> press S in dl-fldigi
[20:43] <mikestir> nice. got a pic from ISS
[20:43] <Jacobz_> Upu - Nothing happens. Get that little sound that means it isn't a command
[20:45] <Upu> View -> SSDV ?
[20:45] <Jacobz_> Ahh. Thanks
[20:46] <gonzo_nb> ah, the have finally trarted txing fro iss
[20:46] <gonzo_nb> reports earlier were no sigs were being heard
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[20:55] <mikestir> they left a massive gap between the two images on that pass
[20:55] <mikestir> it stopped shortly after AOS and then was silent for most of the pass
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[20:55] <mikestir> just squeezed in one complete image before it disappeared again
[20:56] <mikestir> big sigs though
[21:03] <gonzo_nb> where are you mikestir ?
[21:03] <mikestir> near liverpool
[21:04] <gonzo_nb> ah, wonder why I couldn't see it then?
[21:04] <mikestir> where you using a rig to rx or sdr?
[21:04] <mikestir> were*
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[21:05] <mikestir> because the doppler is about 2.5 kHz at worst so you need to ride the tuning a bit if you're using a 2m rig. also needs to have the narrow filter turned off
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[21:06] <gonzo_nb> sdr, so just looking for the ttrace
[21:07] <mikestir> should have been able to see it then. it was S9+20 here for some of the pass
[21:07] <gonzo_nb> what ant?
[21:07] <mikestir> X30
[21:07] <mikestir> next pass in an hour
[21:07] <gonzo_nb> will boot up the tracker
[21:08] <gonzo_nb> must get at least one pic
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[21:31] <DL7AD> short statement: we found one ballon with one payload (aprs & go pro) but we did not find the other (domex22 & go pro). we got ag great video (one balloon films the other). will do some more analysis tomorrow.
[21:31] <DL7AD> for D-8
[21:32] <Upu> good and not so good
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[21:33] <DL7AD> Upu: yep
[21:34] <DL7AD> and we got a photo of the person who found it. he pressed probably the button on the failed go pro by accident
[21:34] <DL7AD> and took a photo of himself :D
[21:35] <DL7AD> good night
[21:35] <Upu> nn
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[22:08] <mikestir> gonzo_nb: iss just rising now. there's a signal
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[22:17] <gonzo_> late on parade
[22:17] <gonzo_> but got good sigs just as the tx shut off
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[22:18] <gonzo_> s9+60
[22:19] <mikestir> yeah I got top 2/3 of the last pic. lost signal way before the end of the pass for some reason then briefly came back for the last few lines
[22:19] <mikestir> must have been building obstruction
[22:19] <mikestir> more tomorrow hopefully
[22:19] <gonzo_> looks like I've missed ity this time
[22:19] <KF5WYX> How significant is a rounding error of 0.0001 in latitude?
[22:21] <KF5WYX> I'd guess that's pretty significant :-/
[22:22] <db_g6gzh> I remembered to listen on that ISS pass http://stuff.dbrooke.me.uk/PD180_20150411_221644.png
[22:23] <chrisstubbs> KF5WYX, http://en.wikipedia.org/wiki/Decimal_degrees
[22:23] <mikestir> db_g6gzh: nice one - I lost the end :(
[22:23] <db_g6gzh> yes, as you can see it was fading a bit here tto
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[22:23] <mikestir> the last pass was really good
[22:24] <db_g6gzh> I got the last 2/3 or so of the previous image too
[22:24] <mikestir> https://twitter.com/mikestir_uk/status/586994765884973056
[22:25] <mikestir> the colourful noise bar wasn't a fade. sounded like intermod so probably a taxi going past or something.grrr
[22:26] <db_g6gzh> nice one, I forgot about that pass
[22:26] <mikestir> it's supposed to be on air tomorrow as well now I read
[22:27] <KF5WYX> Thanks chrissubbs, looks like it's close to 10m variance.
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[22:42] <bradfirj> With a suitable antenna and a filtering amplifier for the band one is interested in, are the cheap RTL SDR dongles any good?
[22:43] <bradfirj> Or is it worth splashing out on one of the fancy ones
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[22:44] <SpeedEvil> They're quite usable, yes
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[22:47] <bradfirj> Thanks :)
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[23:53] <SpacenearUS> New vehicle on the map: 03PS-42 - 12http://tracker.habhub.org/#!qm=All&q=PS-42
[00:00] --- Sun Apr 12 2015