highaltitude.log.20200621

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[00:16] <dfm> Darkside: You tested --json --vit2. Right now --json sets --vit1, i.e. it depends on the args order, i.e. --vit2 --json would still result in --vit1 ... What would you prefer (since --json -> --vit1 is not obvious)?
[00:16] <dfm> a) the option --vit2 independent of --json (i.e. if (!vit) vit=1) or b) --vit2 with --json only if --vit2 comes after --json
[00:16] <SIbot> In real units: 2 in = 5.08 cm
[00:17] <Darkside> dfm: i noticed the orderin gwould cause issues, so i set --json --vit2
[00:17] <dfm> Don't know if I made it clear, but maybe you ran into it when testing...
[00:17] <Darkside> its fine as it is, especially since i'm in control over what options are set in auto_rx
[00:18] <dfm> Yes, I'm not consistent I believe. But I guess it would be better to set option.vit=1 for --json only if --vit2 is not explicitly set!?
[00:18] <Darkside> perhaps
[00:18] <Darkside> im not fussed either way
[00:18] <dfm> Yes, just asking for opinion, if you would use it occiasionally
[00:19] <dfm> rs41 sets the obvious options like ecc, in rs92 it's a bit confusing...
[00:20] <dfm> I hope your mailbox did not flow over
[00:21] <Darkside> haha its ok
[00:23] <dfm> So if you missed it ;) I would say, the improvement for the Manchester coded sondes and soft input is mostly due taking advantage of the combination of both symbols, quasi integrate both together.
[00:26] <dfm> The fsk_demod chain is still your test-demod-chain, default is FM-demodulation via csdr or rtl_fm?
[00:27] <Darkside> nope, default is fsk_Demod on all station snow
[00:27] <Darkside> stations now*
[00:27] <Darkside> rtl_fm is only used on sondes like imet and LMS6-1680
[00:28] <Darkside> i really need some better IQ samples of a meisei ims100 so i can check fsk_demod is happy with it
[00:29] <dfm> ok. was not sure. because as I mentioned, the vit2-option is fine with IQ-demod, like the fsk_demod-soft-output. With FM-audio I would not recommend it. maybe some day, if a bit estimate for the FM-samples could be found.
[00:30] <dfm> I have a sample, I thought you have the same, in principle, from the Bali ims100 ?
[00:31] Nick change: snaked -> snakedypoo
[00:31] <dfm> It's ok to just test if it decodes. Tested the fsk_demod output, works as expected.
[00:32] <Darkside> ah ok, i must have misplaced the sample
[00:32] <Darkside> also havent been in contact with that guy for a while
[00:34] <dfm> Me either. Ok, I just looked, I tested with a 10sec sample, maybe not enough for statistics, but ok. (1.4mb should I sent per email?) But there was more. However real life signal, not a test recording.
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[00:43] <dfm> no objection: sent!
[00:44] <Darkside> hehe ok, thanks
[00:44] <Darkside> sorry, im doing lots of other stuff today!
[00:44] <dfm> ok, getting late here, should go anyway.
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[04:56] <SpacenearUS> New vehicle on the map: 03EAGLE-1-4FSK - 12https://tracker.habhub.org/#!qm=All&q=EAGLE-1-4FSK
[05:11] OZ1SKY_Brian (~Brian@5.186.79.28.dhcp.fibianet.dk) joined #highaltitude.
[05:12] <OZ1SKY_Brian> Darkside GM tried to do a rebuild first, im pretty sure i did that, but tried again. waiting for a sonde
[05:17] <Darkside> hmm
[05:17] <Darkside> try running it up manually
[05:17] <Darkside> python auto_rx.py -m RS41 -f 401.5 -v
[05:18] <OZ1SKY_Brian> in auto_rx dir?
[05:18] <Darkside> yep
[05:18] <OZ1SKY_Brian> ill try
[05:18] <Darkside> i just want to see if the decoder immediatel quits
[05:18] <Darkside> if that happens, when next thing to try is to run up the decoer manually, outside of auto_rx
[05:20] <OZ1SKY_Brian> do you see the errors?
[05:21] <Darkside> unfortunately a lot of them are hidden
[05:21] <Darkside> does the decoder stop immediately?
[05:21] <OZ1SKY_Brian> 2020-06-21 07:21:00,874 DEBUG:Scanner #00000005 - Attempting sonde detection on 401.500 MHz
[05:21] <OZ1SKY_Brian> 2020-06-21 07:21:12,095 DEBUG:Scanner - dft_detect exited in 11.2 seconds with return code 1.
[05:21] <OZ1SKY_Brian> 2020-06-21 07:21:12,098 DEBUG:Scanner #00000005 - No sondes detected.
[05:21] <OZ1SKY_Brian> 2020-06-21 07:21:22,113 INFO:Scanner #00000005 - Scanning on whitelist frequencies (MHz): [ 401.5]
[05:21] <OZ1SKY_Brian> 2020-06-21 07:21:22,115 DEBUG:Scanner #00000005 - Using detection command: timeout 10s rtl_fm -p 0 -d 00000005 -M raw -F9 -s 48000 -f 401500000 2>/dev/null |./dft_detect -t 5 --iq --bw 20 --dc - 48000 16 2>/dev/null
[05:22] <Darkside> i think you missed a bit at the start
[05:22] <Darkside> if it doesnt decode a sonde it will go back to scanning
[05:23] <OZ1SKY_Brian> looks like it stopped all together now
[05:23] <Darkside> ok
[05:23] <Darkside> try running this:
[05:23] <Darkside> rtl_fm -p 0 -d 0 -M raw -F9 -s 48000 -f 401488000 |./fsk_demod --cs16 -b 1200 -u 22800 2 48000 4800 - - | ./rs41mod --ptu --json --softin -i
[05:23] <Darkside> again from within the auto_rx directory
[05:24] <Darkside> that's what auto_rx will run, but without all the error suppression
[05:25] <OZ1SKY_Brian> done
[05:25] <Darkside> .. did it do anything?
[05:25] <OZ1SKY_Brian> Setting estimator limits to 1200 to 22800 Hz.
[05:25] <OZ1SKY_Brian> Found 3 device(s):
[05:25] <OZ1SKY_Brian> 0: Realtek, RTL2838UHIDIR, SN: 00000006
[05:25] <OZ1SKY_Brian> 1: Realtek, RTL2838UHIDIR, SN: 00000004
[05:25] <OZ1SKY_Brian> 2: Realtek, RTL2838UHIDIR, SN: 00000005
[05:25] <OZ1SKY_Brian> Using device 0: Generic RTL2832U OEM
[05:25] <OZ1SKY_Brian> Found Rafael Micro R820T tuner
[05:25] <OZ1SKY_Brian> Tuner gain set to automatic.
[05:25] <OZ1SKY_Brian> Tuned to 401872000 Hz.
[05:25] <OZ1SKY_Brian> Oversampling input by: 32x.
[05:25] <OZ1SKY_Brian> Oversampling output by: 1x.
[05:25] <OZ1SKY_Brian> Buffer size: 5.33ms
[05:26] <Darkside> and its just sitting there?
[05:26] <Darkside> or did it exit
[05:26] <OZ1SKY_Brian> yes
[05:26] <Darkside> huh
[05:26] <Darkside> that means its running at the very least
[05:26] <OZ1SKY_Brian> no sondes to test on right now
[05:27] <Darkside> its the fact that it was exiting right away that has me concerned
[05:27] <Darkside> i cant replicate this here
[05:28] <OZ1SKY_Brian> yeah i has not decoded anything since the update
[05:28] <Darkside> i was watching your station do the start/stop thing via the web interface
[05:29] <Darkside> its kind of difficult to debug this stuff
[05:29] <OZ1SKY_Brian> yes ok
[05:30] <Darkside> the fact that its exiting immeditely from within auto_rx is interesting though
[05:30] <OZ1SKY_Brian> i think its best to wait for a signal to work on
[05:30] <Darkside> can you try running: python auto_rx.py -m RS41 -f 401.5 -v again
[05:30] <OZ1SKY_Brian> yes
[05:30] <Darkside> and copy the entire output from when you run that command to when it starts to go into scan
[05:30] <Darkside> put it onyo something like slexy.org instead of here
[05:30] <Darkside> so we dont spam the channel
[05:33] <OZ1SKY_Brian> check your wmail
[05:33] <OZ1SKY_Brian> email
[05:34] <Darkside> oh thats right, multiple SDRs...
[05:34] <Darkside> it looks like the decoder process is running...
[05:35] <OZ1SKY_Brian> yes something is starting
[05:35] <Darkside> like, it didnt bomb out immediately
[05:35] <Darkside> do you have a sonde you can test with?
[05:36] <Darkside> like, one you can turn on
[05:36] <OZ1SKY_Brian> hmm let me see if theres any batt on the rs41
[05:37] <OZ1SKY_Brian> theres not, looking for some batts
[05:39] <OZ1SKY_Brian> bugger, trying to take it apart, not so easy'
[05:40] <Darkside> haha
[05:40] <Darkside> is this the complete foam case one?
[05:40] <OZ1SKY_Brian> that top bracket, grrrhh
[05:40] <Darkside> yep
[05:40] <Darkside> its a PITA
[05:41] <Darkside> i use two small flat-bladed screwdrivers
[05:41] <OZ1SKY_Brian> ok got it off
[05:42] <OZ1SKY_Brian> does it need gps, i forgot?
[05:43] <OZ1SKY_Brian> to tx
[05:43] <Darkside> nah
[05:43] <OZ1SKY_Brian> ok its on
[05:43] <Darkside> it might blink red if the sensor is faulty too, but it shoudl still transmit
[05:44] <Darkside> so start up auto_Rx with: python auto_rx.py -v
[05:44] <Darkside> and lets see what happens
[05:44] <Darkside> we'l let auto_rx run through the usual scan process fo rthe first time
[05:44] <OZ1SKY_Brian> how do i stop the other stuff running?
[05:45] <OZ1SKY_Brian> ok i think it stopped now
[05:45] <OZ1SKY_Brian> ctrl-c
[05:46] <OZ1SKY_Brian> ok running
[05:46] <SpacenearUS> New vehicle on the map: 03VK5NTM-9_chase - 12https://tracker.habhub.org/#!qm=All&q=VK5NTM-9_chase
[05:46] <OZ1SKY_Brian> say it does not have a gps lock
[05:47] <OZ1SKY_Brian> so must be decoding
[05:47] <Darkside> huh
[05:47] <Darkside> yeah
[05:47] <Darkside> so thats odd
[05:47] <Darkside> i wonder if its something specific in the telemetry thats causing it to have problems
[05:48] <OZ1SKY_Brian> ill go and put it outside, so i can get gps
[05:48] <Darkside> ok
[05:52] <OZ1SKY_Brian> hmm its decoding
[05:52] <Darkside> yep
[05:52] <OZ1SKY_Brian> what was wrong before then i wonder
[05:52] <Darkside> yeah... odd
[05:52] <Darkside> lets see what happens on the next sonde launch
[05:52] <OZ1SKY_Brian> very
[05:52] <Darkside> or maybe its another decoder at fault?
[05:52] <Darkside> was it RS41s it was crashing on?
[05:53] <Darkside> i mean, i tested the update with every sonde i have in my collection
[05:53] <OZ1SKY_Brian> yes it was
[05:53] <Darkside> which is most
[05:53] <Darkside> ok
[05:53] <Darkside> maybe the build of the decoders didnt run proeprly
[05:54] <OZ1SKY_Brian> i tried a sudo build this time, lets see if that helped
[05:54] <Darkside> hrm
[05:54] <Darkside> thats not a good idea
[05:54] <OZ1SKY_Brian> ok?
[05:54] <Darkside> if you build the binaries as root, they may not be executable as whatever user you are running auto_rx as
[05:54] <OZ1SKY_Brian> ok ill redo a build as normal
[05:55] <Darkside> it might fail to overwrite the files
[05:55] <Darkside> or even build them due to permissions issues
[05:55] <OZ1SKY_Brian> ill do a normal build and restart autorx as normal
[05:55] <Darkside> watch carefully when building to see what it does
[05:56] <OZ1SKY_Brian> update first or just build?
[05:56] <Darkside> just build, you are already on teh latest update
[05:58] <OZ1SKY_Brian> access denied to the folders
[05:58] <Darkside> yeah thought so
[05:58] <OZ1SKY_Brian> hmm didnt have that issue before
[05:58] <Darkside> thats because you ran a build as root
[05:59] <OZ1SKY_Brian> bugger
[05:59] <Darkside> lemme quickly write a script to clean the files up
[06:00] <OZ1SKY_Brian> sri about that
[06:03] <Darkside> ok
[06:03] <Darkside> run a git pull, there shoudl now be a clean.sh script in the auto_rx dir
[06:03] <Darkside> run: sudo ./clean.sh
[06:04] <Darkside> then you shoudl be able to run the build.sh script as your usual usuer
[06:05] <OZ1SKY_Brian> error could not remove mXXmod no such file
[06:05] <Darkside> yeah thats ok
[06:05] <OZ1SKY_Brian> R
[06:05] <Darkside> we're not using that demod yet
[06:05] <OZ1SKY_Brian> R, building
[06:06] <OZ1SKY_Brian> done and ok
[06:06] <OZ1SKY_Brian> restarting normal
[06:06] <OZ1SKY_Brian> exit
[06:06] <Darkside> eh?
[06:06] <OZ1SKY_Brian> sri wrong window with the "exit"
[06:06] <Darkside> phew
[06:07] <OZ1SKY_Brian> lol
[06:07] <OZ1SKY_Brian> ok its starting
[06:07] <OZ1SKY_Brian> no errors beside the normal web control ngp_tweak
[06:07] <Darkside> you can fix that by updating your station.cfg
[06:07] <Darkside> but otherwise its not an issue
[06:08] <OZ1SKY_Brian> looks like its working, i just dont understand why it does now and not yesterday
[06:09] <OZ1SKY_Brian> let me clear the l/o list to get something in from the south
[06:11] <OZ1SKY_Brian> blacklist i mean
[06:12] <OZ1SKY_Brian> ill turn the RS off, its overloading the preamp :-)
[06:12] <OZ1SKY_Brian> brb
[06:12] <Darkside> hehe
[06:17] <OZ1SKY_Brian> ok its off
[06:17] <OZ1SKY_Brian> its decoding another one
[06:17] <OZ1SKY_Brian> near berlin
[06:20] <Darkside> ok, well thats good
[06:21] <OZ1SKY_Brian> yes but still wonder
[06:25] <SpacenearUS> New vehicle on the map: 03PS-75 - 12https://tracker.habhub.org/#!qm=All&q=PS-75
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[07:36] <SpacenearUS> New position from 03MJA-soLar after 0316 hours silence - 12https://tracker.habhub.org/#!qm=All&q=MJA-soLar
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[08:06] <SpacenearUS> New position from 03W5KUB-18 after 0314 hours silence - 12https://tracker.habhub.org/#!qm=All&q=W5KUB-18
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[08:56] <SpacenearUS> New vehicle on the map: 03PE1REM_chase - 12https://tracker.habhub.org/#!qm=All&q=PE1REM_chase
[09:00] <matt|home> hi.
[09:00] <matt|home> would beginning a launch from a higher altitude , like say raising a payload with a balloon for example, significantly decrease fuel requirements for orbit or would it be irrelevant/still a huge amount
[09:17] <SpacenearUS> New vehicle on the map: 03PC4L-RTTY - 12https://tracker.habhub.org/#!qm=All&q=PC4L-RTTY
[09:22] <bertrik> balloons get up to max 40 km or so, space starts at 100 km, ISS orbits at about 400 km, wikipedia tells me the starlink satellites are at 550 km
[09:22] <SpacenearUS> New vehicle on the map: 03PC4L-LORA - 12https://tracker.habhub.org/#!qm=All&q=PC4L-LORA
[09:23] <matt|home> bertrik : so no appreciable fuel saving measures?
[09:25] <bertrik> I don't know, but it appears that altitude-wise it's only a fraction
[09:25] <matt|home> hm
[09:25] <daveake> Must be significant otherwise Virgin wouldn't be launching from an aircraft
[09:26] <daveake> A balloon gets you past most of the atmosphere, so that's a lot of drag as well as the altitude
[09:26] <bertrik> at 40 km the atmosphere is already very thin
[09:26] <bertrik> (as in low pressure)
[09:26] <matt|home> something to experiment with then maybe
[09:27] <daveake> Well rockoons as they're called do exist; dunno if anyone has done one to orbit
[09:28] <daveake> Orbit is mainly about the velocity rather than altitude so you need a lot of energy anyway
[09:29] <matt|home> hm. helium's pretty expensive as well
[09:30] <daveake> For an amateur launch, another issue is permission ... try going to the CAA and saying you want to launch a rocket but you're not sure where it will be launched from!
[09:30] <matt|home> lol
[09:30] <matt|home> i don't need permission
[09:30] <daveake> because ....?
[09:30] <matt|home> if i needed permission for any of my experiments i never would have gotten this far
[09:32] <matt|home> did frankenstein need permission before he dug out graves to use those body parts? No. and he created life. did the US government need permission before they decided to launch people into space? No. and now we have the ISS
[09:32] <matt|home> im doing people a favor by furthering humanity. all i need is a wide enough airspace
[09:32] <daveake> Riiiiight
[09:33] <daveake> So where is this airspace that anyone can use without request ?
[09:33] <matt|home> and also you know, money, but that's secondary
[09:33] <Darkside> haha
[09:33] <Darkside> hhhaha
[09:33] <matt|home> it's called my backyard. well it's not really my backyard it's the apartment complex's, but im sure they won't complain
[09:33] <Darkside> ok
[09:33] <Darkside> good luck
[09:34] <matt|home> in all seriousness though , i think if it significantly cuts down on fuel costs that balloon launches from some sort of reusable platform would be extremely useful no?
[09:35] <russss> yes, but the uncertainty of launch position and complexity of dealing with potentially huge balloons tends to make it infeasible
[09:37] <matt|home> i guess the launch position would be really difficult to deal with unless you had some sort of steering mechanism for the launch platform
[09:37] <Darkside> theres probably scott manley video on this lol
[09:38] <daveake> ;heh
[09:38] <daveake> Kerbal
[09:38] <russss> it's more workable for suborbital stuff where you're only really concerned with the rocket going vaguely upwards
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[11:10] <OZ1SKY_Brian> Darkside first one decoding
[11:11] <Darkside> cool
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[11:11] <OZ1SKY_Brian> oh forgot the blackout list, restartet now with all freq
[11:12] <OZ1SKY_Brian> first decoding again
[11:12] <OZ1SKY_Brian> should have 2 more soon
[11:18] <OZ1SKY_Brian> secound decoding
[11:19] <OZ1SKY_Brian> second
[11:19] <OZ1SKY_Brian> third decoding
[11:19] <OZ1SKY_Brian> all looks good
[11:59] <SpacenearUS> New position from 03BB10 after 0320 hours silence - 12https://tracker.habhub.org/#!qm=All&q=BB10
[12:33] <SpacenearUS> New position from 03PS-76 after 0316 hours silence - 12https://tracker.habhub.org/#!qm=All&q=PS-76
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[12:54] <SpacenearUS> New vehicle on the map: 03OK1PVT-11 - 12https://tracker.habhub.org/#!qm=All&q=OK1PVT-11
[13:17] Bozzey (4f4f566e@79.79.86.110) joined #highaltitude.
[13:27] <SpacenearUS> New vehicle on the map: 03KD5GOM-11 - 12https://tracker.habhub.org/#!qm=All&q=KD5GOM-11
[13:31] <Bozzey> Did/is mja-solar launch today?
[13:37] <PE2BZ> Bozzey, No... The wire to the balloon snapped a solar panel.
[13:37] <Bozzey> =(
[13:37] <PE2BZ> Tried to fix it at work (launch location) with one bigger size panel.
[13:37] <PE2BZ> Then another one fell in 2 pieces too.
[13:38] <PE2BZ> Then I skipped and took the tracker home.
[13:38] <PE2BZ> Now I made a new set of panels and mounted it, tested but it' s cloudy now.
[13:41] <SpacenearUS> New position from 03KD0HIP-7 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=KD0HIP-7
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[13:50] <robbo79> whats the best antenna for rx
[13:51] <SpeedEvil> Pointed, omnidirectional, mount to roof of car, ...
[13:51] <SpeedEvil> Directional antennas have best range, but need pointed and are generally more expensive and bulky
[13:54] <bertrik> robbo79: a fixed colinear has gain towards the horizon and is used a lot for balloon tracking
[13:54] <SpeedEvil> Horizon gain antennas can lead to a null spot when the balloon gets closer.
[13:55] <robbo79> ive built a 1/4 monopole
[14:11] <PE2BZ> Does it work :-)
[14:12] <PE2BZ> There's almost always improvement possible, and it indeed all depends on what you plan to do with it.
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[15:04] <SpacenearUS> New position from 03NASD01 after 0321 days silence - 12https://tracker.habhub.org/#!qm=All&q=NASD01
[15:12] <SpacenearUS> New vehicle on the map: 03KM4EFW_chase - 12https://tracker.habhub.org/#!qm=All&q=KM4EFW_chase
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[17:06] <SpacenearUS> New vehicle on the map: 03GAS-10 - 12https://tracker.habhub.org/#!qm=All&q=GAS-10
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[17:49] Nick change: snakedypoo -> snakedkranz
[18:31] <Bozzey> PE2BZ, please feel free to drop me an email when your next LORA launch, still itching to use this pi3 and LORA board here (y)
[18:33] <PE2BZ> You could prepare 434.625 mode 2
[18:33] <Bozzey> Will do, if I can remember how to set it up ;D
[18:33] <PE2BZ> That one might fly tomorrow, not mine but close
[18:34] <PE2BZ> nano gateway.txt
[18:34] <PE2BZ> :-)
[18:35] <SpacenearUS> New position from 03KD2KDD-15 after 03a month silence - 12https://tracker.habhub.org/#!qm=All&q=KD2KDD-15
[18:35] <Bozzey> Did you get your payload back from the UK the other week?
[18:36] <PE2BZ> Yes, all in one piece ( two piecec, but 2 trackers)
[18:36] <PE2BZ> And I think I located the cause of the intermittent TX.
[18:36] <PE2BZ> Chinese wire....
[18:38] <PE2BZ> One side perfectly solderered, the other side all singe wires with a " drop" of solder on the bottom of the PCB, between the Arduino board and the mainboard. This was the first time I had a tracker failing when cooliing the bottom of the PCB where no componens where mounted.
[18:39] <Bozzey> Good you got it back for "autopsy"
[18:40] <PE2BZ> It' s prepared again. Now covered with plastic spray, it resists my cold spray from 10 cm distance :-)
[18:48] <PE2BZ> Bozzey, mine might fly wednesday, I would like the wind to fly it towards Denmark
[18:59] <Bozzey> Ok, keep us posted
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[20:08] <Viproz> Hey OZ1SKY_Brian, why are you not using auto_rx to feed the RS data to radiosondy ?
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[21:44] <OZ1SKY_Brian> Viproz hi im using both
[21:45] <OZ1SKY_Brian> gotta run, bedtime gn
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[00:00] --- Mon Jun 22 2020