highaltitude.log.20181103

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[06:20] <SpacenearUS> New position from 03HORUSBINARY after 0320 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HORUSBINARY
[06:25] <SpacenearUS> New vehicle on the map: 03HORUS - 12https://tracker.habhub.org/#!qm=All&q=HORUS
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[07:10] <SpacenearUS> New vehicle on the map: 03VK5IX-9_chase - 12https://tracker.habhub.org/#!qm=All&q=VK5IX-9_chase
[08:12] <SpacenearUS> New vehicle on the map: 03OK1KZL - 12https://tracker.habhub.org/#!qm=All&q=OK1KZL
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[09:43] <eisvogel201> Good morning everyone! One question concerning the lenght of the cord between balloon and parachute: If the balloon has a burst diameter of 7+x metres, how long should the connection be?
[09:50] <SpacenearUS> New vehicle on the map: 03HA3PL-11 - 12https://tracker.habhub.org/#!qm=All&q=HA3PL-11
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[09:56] <michal_f> hi
[09:56] <michal_f> is UKHAS mailing grp moderated? I posted yesterday and it didn't show up
[10:07] <eisvogel201> One question concerning the lenght of the cord between balloon and parachute: If the balloon has a burst diameter of 7+x metres, how long should the connection be?
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[10:08] <Darkside> eisvogel201: a few metres is fine
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[10:10] <SpacenearUS> New vehicle on the map: 03OK9DMR_chase - 12https://tracker.habhub.org/#!qm=All&q=OK9DMR_chase
[10:11] <eisvogel201> Which number is "few"? ;)
[10:11] <Darkside> i usually do about 1-2 m
[10:12] <eisvogel201> Doesn´t the lenght depend on the balloon size?
[10:13] <Darkside> i haven't bothered to change it
[10:13] <Darkside> hasnt seemed that critical for my launches
[10:16] <eisvogel201> Then i should be fine with 2 / 3 metres, just to make sure that the balloon doesn`t interfere with the parachute after the burst..
[10:16] <eisvogel201> Thanks for the advice!
[10:20] <SpacenearUS> New vehicle on the map: 03DF7PN-12 - 12https://tracker.habhub.org/#!qm=All&q=DF7PN-12
[10:38] <Darkside> michal_f: dunno
[10:38] <Darkside> michal_f: ahh - you are frozu?
[10:40] <Darkside> froszu*
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[10:43] <michal_f> yep, that's me
[10:44] <Darkside> ahh
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[10:45] <michal_f> have you tried habdec yet ? :)
[10:45] <Darkside> not yet
[10:46] <Darkside> does it really need boost 1.68?
[10:46] <michal_f> for websocket interface - yes
[10:46] <Darkside> damn
[10:46] <michal_f> if you wan't core decoder to integrate into your own code, then it really needs only fftw
[10:46] <michal_f> and even this could be stripped out
[10:47] <michal_f> boost 1.68 is a roadblock ?
[10:50] <SpacenearUS> New vehicle on the map: 03ICSEDS - 12https://tracker.habhub.org/#!qm=All&q=ICSEDS
[10:51] <Darkside> just more that most repositories dont have that yet
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[10:52] <michal_f> it's easy to build and install locally, so it won't interfere with default OS installation
[10:52] <michal_f> there are ready instructions in BuildInstructions.md
[10:53] <michal_f> and ready binaries on wiki
[10:53] <Darkside> no binaries for OSX ;-)
[10:53] <michal_f> ahh yes... no osX
[10:54] <michal_f> and it never was tested on osx
[10:54] <Darkside> if it works on linux it will probably be ok on OSX
[10:54] <Darkside> just a matter of getting the right libs
[10:54] <michal_f> don't you have a spare raspi around ? :)
[10:54] <Darkside> yeah i do, but cbf at the moment
[10:54] <Darkside> got a balloon launch tomorrow
[10:54] <michal_f> cool
[10:55] <michal_f> anyway, i posted info to ukhas mailing list, hoping more folks try this, but the mail stucked somewhere
[10:55] <Darkside> urgh, raspbian only has boost 1.62
[10:55] <Darkside> yeah no idea about the mailing list
[10:56] <michal_f> it will probably take time for 1.68 to land in default OS installs
[10:56] <Darkside> also with the habitat uploader bits, if you are calling a python script, you might want to try the one here: https://github.com/projecthorus/horusbinary/blob/master/horusbinary.py
[10:56] <Darkside> well
[10:56] <Darkside> that does a bit more, but it has a queued telemetry uploader class, which will handle network distruptions a bit better
[10:56] <Darkside> disruptions*
[10:57] <Darkside> that script will accept ASCII sentences on stdin, or via UDP messages
[10:57] <michal_f> will take a look, thanks
[10:58] <Darkside> its also part of the 4FSK telemetry mode i've been involved with
[10:58] <michal_f> eventually I'd like to be part of executable
[10:58] <Darkside> much better performance than rtty...
[10:59] <michal_f> what would I use to decode 4fsk ?
[10:59] <Darkside> david rowe has written a demodulator
[10:59] <Darkside> which is available as a library..
[11:00] <michal_f> nice, I'll have a look at this too
[11:00] <Darkside> http://svn.code.sf.net/p/freetel/code/codec2-dev/src/horus_demod.c
[11:00] <Darkside> thats the 'demo' program
[11:00] <Darkside> which uses an api
[11:03] <Darkside> some info on the packet format is here: https://github.com/projecthorus/horusbinary#mfsk---horus-binary-packets
[11:03] <michal_f> ok, bookmarked
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[11:04] <michal_f> I have to go now. Have fun with your launch
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[11:07] <SpacenearUS> New position from 03IV3SRD-11 after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=IV3SRD-11
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[11:21] <dbrooke> Darkside: regarding the horusbinary stuff, just wondered if you'd actually used the gqrx UDP mode as I can only get external radio and sound card to work (RTTY mode) but gqrx UDP works to dl-fldigi with the same tracker transmitter
[11:21] <Darkside> yeah i've used it for decoding a lot
[11:22] <Darkside> i have sometimes had issues where gqrx only sends to IPv6 localhost
[11:22] <Darkside> and where netcat was listening on IPv4 localhost..
[11:22] <Darkside> so no data coming through
[11:23] <dbrooke> I checked that by piping nc to a file which did grow
[11:23] <Darkside> hrm
[11:24] <Darkside> 99% sure i've had it going before
[11:24] <dbrooke> as I needed the -p option
[11:24] <Darkside> admittedly i've really only been testing with the 4FSK mode
[11:24] <Darkside> it may be because horusbinary will only find RTTY sentences with the fixed number of $$s at the start
[11:25] <Darkside> its using fldigi does it
[11:25] <Darkside> urgh
[11:25] <Darkside> its extracting sentences in a bit of a different way to how fldigi does it
[11:26] <Darkside> and hence is a bit more fussy about the 'framing'
[11:26] <dbrooke> I don't currently have a 4fsk source so just tried rtty so far but made it compatible and it does decode in horusbinary from sound card/external radio
[11:26] <Darkside> oh
[11:26] <Darkside> in that case i have NFI
[11:27] <Darkside> sorry :-(
[11:27] <dbrooke> OK I'll try more tests at some point, might be jitter as I noticed the 1 second debug output was alternating +/- 48k more often with udp cf audio
[11:28] <Darkside> hrm so long as you're not dropping packets it should be ok
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[11:29] <Lyra_> ciao
[11:30] <dbrooke> I have a RS41 so I can try 4fsk once I've sorted out a programmer ...
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[12:11] <SpacenearUS> New vehicle on the map: 03QST-01 - 12https://tracker.habhub.org/#!qm=All&q=QST-01
[12:14] <LRD> ICSEDS - GPS failed?
[12:15] <Graham_G3VZV> icseds mega signal here approx 026 az and 10 degre elevation..near milton keynes
[12:16] <LRD> yes, but GPS co-ords identical every transmission?
[12:17] <Graham_G3VZV> indeed:(
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[12:23] <Graham_G3VZV> quite a lot of doppler
[12:24] <LRD> Yes swining about quite a lot. At least temperature data is working.
[12:25] <Graham_G3VZV> something like 11km up?
[12:27] <LRD> Pressure sensor also OK so I guess they can work out approx altitude
[12:33] <SpacenearUS> New position from 03RTLS1 after 034 days silence - 12https://tracker.habhub.org/#!qm=All&q=RTLS1
[12:36] <daveake> If they use the last position, burst time (by listening) and landing time (same) they can run a prediction to fit those points. I got within 150 for the flight I did with Stsve a few weeks ago when we lost GPS at 25km
[12:36] <daveake> 35km
[12:36] <daveake> 150m ^
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[13:11] <G7OGX> what is the dial set frequency for icseds autumn please?
[13:18] <Graham_G3VZV> 434,45215 with me USB
[13:33] <dbrooke> sounded like burst at 13:32
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[13:34] <dbrooke> and pressure increasing
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[14:44] <dbrooke> LOS was 14:32:47 here @ G6GZH
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[16:21] <SpacenearUS> New vehicle on the map: 03WB8ELK-4 - 12https://tracker.habhub.org/#!qm=All&q=WB8ELK-4
[16:44] <SpacenearUS> New vehicle on the map: 03WB9ELK-4_chase - 12https://tracker.habhub.org/#!qm=All&q=WB9ELK-4_chase
[16:53] <SpacenearUS> New vehicle on the map: 03OM3KAA - 12https://tracker.habhub.org/#!qm=All&q=OM3KAA
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[17:54] <SpacenearUS> New position from 03KG5IFR after 035 days silence - 12https://tracker.habhub.org/#!qm=All&q=KG5IFR
[18:10] <SpacenearUS> New vehicle on the map: 03ICSEDS chase_chase - 12https://tracker.habhub.org/#!qm=All&q=ICSEDS%20chase_chase
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[18:11] <SpacenearUS> New position from 03KJ4TDM-11 after 03a month silence - 12https://tracker.habhub.org/#!qm=All&q=KJ4TDM-11
[18:14] <SpacenearUS> New vehicle on the map: 03N4XWC-1 - 12https://tracker.habhub.org/#!qm=All&q=N4XWC-1
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[18:52] <SpacenearUS> New vehicle on the map: 03N4XWC-11 - 12https://tracker.habhub.org/#!qm=All&q=N4XWC-11
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[19:17] <PE2BZ> !flights
[19:17] <SpacenearUS> 03PE2BZ: Current flights: 03ICSEDS autumn launch 10(3328), 03Belice-2 10(67f3), 03Horus 50 10(e491)
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[20:07] <SpacenearUS> New position from 03MAGION-1S after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=MAGION-1S
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[20:20] <SpacenearUS> New position from 03BSS18 after 036 hours silence - 12https://tracker.habhub.org/#!qm=All&q=BSS18
[20:54] <SpacenearUS> New vehicle on the map: 03VK5QI-9_chase - 12https://tracker.habhub.org/#!qm=All&q=VK5QI-9_chase
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[22:26] <SpacenearUS> New position from 03HORUSLORA1 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=HORUSLORA1
[22:50] <SpacenearUS> New vehicle on the map: 03VK5IX-9_chase - 12https://tracker.habhub.org/#!qm=All&q=VK5IX-9_chase
[23:06] <SpacenearUS> New position from 03IV3SRD-11 after 039 hours silence - 12https://tracker.habhub.org/#!qm=All&q=IV3SRD-11
[23:08] <SpacenearUS> New position from 03HORUSBINARY after 0316 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HORUSBINARY
[23:10] <SpacenearUS> New vehicle on the map: 03VK5FJ-9_chase - 12https://tracker.habhub.org/#!qm=All&q=VK5FJ-9_chase
[23:16] <SpacenearUS> New vehicle on the map: 03HORUS - 12https://tracker.habhub.org/#!qm=All&q=HORUS
[23:39] <SpacenearUS> New vehicle on the map: 03VK5ARG-12 - 12https://tracker.habhub.org/#!qm=All&q=VK5ARG-12
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[23:53] <SpacenearUS> New vehicle on the map: 03vk5wtf_chase - 12https://tracker.habhub.org/#!qm=All&q=vk5wtf_chase
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[00:00] --- Sun Nov 4 2018