highaltitude.log.20181216

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[01:03] <SpacenearUS> New vehicle on the map: 03Foxx01_chase - 12https://tracker.habhub.org/#!qm=All&q=Foxx01_chase
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[01:22] <SpacenearUS> New vehicle on the map: 03P1133160 - 12https://tracker.habhub.org/#!qm=All&q=P1133160
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[06:21] <SpacenearUS> New vehicle on the map: 03OK2IT_chase - 12https://tracker.habhub.org/#!qm=All&q=OK2IT_chase
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[07:21] <SpacenearUS> New position from 03BSS18 after 0312 hours silence - 12https://tracker.habhub.org/#!qm=All&q=BSS18
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[07:48] <SpacenearUS> New position from 03tracker1 after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=tracker1
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[11:13] <SpacenearUS> New position from 03PI4Z after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=PI4Z
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[11:40] <PE2BZ> GM Robert__
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[12:13] <SpacenearUS> New vehicle on the map: 03PI4Z-12 - 12https://tracker.habhub.org/#!qm=All&q=PI4Z-12
[12:18] <g8fjg> still 100 km away H$$$PI4Zl299,32128,4 .5Y24(4.!9976,027,Y1,3.09,20%3,Y,80*BE b7"55
[12:25] <PE2BZ> Nice!
[12:25] <PE2BZ> Snow is conducting :-)
[12:32] <g8fjg> its going away faster than going up for me..afk ..going for a warm up
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[13:07] <PE2BZ> Ascend rate was calculated for 3 m/s but PC4L did forget to calculate the weight for ropes and parachute that´s why it´s going up slowly
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[14:29] <OZ1SKY_Brian> PE2BZ whats the freq for pi4z?
[14:29] <OZ1SKY_Brian> the dial
[14:30] <PE2BZ> 434.349
[14:30] <OZ1SKY_Brian> thanks
[14:30] <OZ1SKY_Brian> what does the predict say about landing, japan? :-)
[14:32] <PE2BZ> Well, ascend was calculated for 3 m/s but he did forget the weight of the chute which is 1/3 of the payload weight....
[14:33] <OZ1SKY_Brian> yeah very slow ascend, should be a long flight
[14:33] <PE2BZ> Batteries last an average of 24 hours. But not much receivers in Germany
[14:34] <PE2BZ> But we have PA3DJR in the northern part of the Netherlands :-)
[14:34] <OZ1SKY_Brian> and lots on SP, if they are alerted
[14:35] <OZ1SKY_Brian> in SP i mean
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[15:19] <PE2BZ> I added a remark to the UKHAS message
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[16:22] <SA6BSS-Mike> pinnhole burst or float.
[16:25] <SA6BSS-Mike> only turbulence
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[16:40] <SpacenearUS> New vehicle on the map: 03KE8EYN-11 - 12https://tracker.habhub.org/#!qm=All&q=KE8EYN-11
[16:46] <SpacenearUS> New position from 03U3B-22 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=U3B-22
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[17:18] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12https://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
[17:25] <PE2BZ> Mike it´s ¨slightly underfilled:
[17:26] <PE2BZ> PC4L told me the weight of payload, 114 gram, but he did not mention it was without the rope and the parachute.
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[17:32] <PE2BZ> OZ1SKY_Brian congratulations !
[17:52] <SA6BSS-Mike> yeah, what was the - minus angele you got on that first decode?
[17:53] <SA6BSS-Mike> or over horizon decode to put it i another word
[17:53] <SA6BSS-Mike> under horizon even
[17:54] <OZ1SKY_Brian> hi, -0.8deg
[17:54] <SA6BSS-Mike> nice!!
[17:55] <OZ1SKY_Brian> maybe tropo related, its S7 at -0.4deg
[17:56] <SA6BSS-Mike> , yeah as I saw you decode from a far I fired up my ssdr and pointed the yagi, I do belive it power out is a bit more the 10mW
[17:56] <SA6BSS-Mike> it would realy be a good thing to reach float right about now
[17:56] <OZ1SKY_Brian> tropo map shows no tropo atm
[17:57] <SA6BSS-Mike> so proabably 50-60mW out
[17:57] <SA6BSS-Mike> hmm, float ?? fingers crossed
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[17:59] <OZ1SKY_Brian> having problems showing the payloads in the left side of the screen, just a blank white box
[17:59] <OZ1SKY_Brian> on habhub
[17:59] <SA6BSS-Mike> refreched the browser?
[18:00] <OZ1SKY_Brian> then i can do 5-10 reloads or ctrl+f5 and then its back
[18:00] <SA6BSS-Mike> hm, works fine here
[18:00] <PE2BZ> SA6BSS-Mike you could be right about the power. He flew the sonde I programmed for the club station to test receivers their setup around the station. He should have flewn the 12 mW version but for a first flight there´s not much going wrong :-)
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[18:01] <PE2BZ> But the high output power goes with higher battery usage so we have to sit and wait
[18:02] <SA6BSS-Mike> if we are lucky it looks like it reached float, even look like it might get in range of my qth
[18:02] <SA6BSS-Mike> that would be the firdt of the year!
[18:03] <SA6BSS-Mike> almost, forgot about the german runaway flight
[18:03] <OZ1SKY_Brian> S9 now, still at -0.4deg, nice
[18:04] <OZ1SKY_Brian> s/n 26db
[18:05] <SA6BSS-Mike> still on 434.349?
[18:05] <OZ1SKY_Brian> yes
[18:06] <OZ1SKY_Brian> 434.349 @1252Hz here
[18:06] <SA6BSS-Mike> tnx
[18:08] <SA6BSS-Mike> was it last christmas someone sent up a hab reaching float at 31000m
[18:10] <PE2BZ> No, last christmas I gave you my heart ;-) ;-)
[18:13] <SA6BSS-Mike> last christmas I gave you a hab, and the very next day where flying away
[18:13] <PE2BZ> :-) :-)
[18:14] <SA6BSS-Mike> :)
[18:14] <PE2BZ> It´s always nice over here :-)
[18:14] <SA6BSS-Mike> it is!
[18:15] <SA6BSS-Mike> it shoud realy be "you" after...next day
[18:16] <PE2BZ> I did notice on the payload telemetry stats there appears to be a new button ¨Callsign Pie for flight ¨ which saves from having to go to the flight list and again to the callsign :-)
[18:16] <SA6BSS-Mike> looking...
[18:22] <PE2BZ> Button appeared on other pies I see in my history so that must have skipped my attention
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[18:30] <SpacenearUS> New vehicle on the map: 034Z7HKA-11 - 12https://tracker.habhub.org/#!qm=All&q=4Z7HKA-11
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[18:46] <PE2BZ> output has been checked, set to 20 dBm (at 403 MHz that is) and the antenna was not shortened for 434 MHz and the ¨on pcb¨ filter unmodified. I measured that once, which gave met 60 mW on the power meter.
[18:48] <SA6BSS-Mike> https://ready.arl.noaa.gov/hypubout/trajplot_196189.pdf
[18:48] <SA6BSS-Mike> trajectory for 24h
[18:50] <SA6BSS-Mike> zoomed out https://ready.arl.noaa.gov/hypubout/trajplot_196224.pdf
[18:50] <SpacenearUS> New position from 03KG5IFR after 034 days silence - 12https://tracker.habhub.org/#!qm=All&q=KG5IFR
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[21:03] <Viproz> Darkside, here by chance ?
[21:11] <Darkside> Viproz: luckily enough, yes
[21:13] <Viproz> Darkside, so I've worked on the port for M10s quite a bit, I have the decoder working for both types of M10s and I'm now going to see to add it to auto_rx
[21:14] <Viproz> In the code you check for bad packets using a regex on the serial number, why do you not trust the crc ?
[21:14] <SpacenearUS> New vehicle on the map: 03IU2EFA-12 - 12https://tracker.habhub.org/#!qm=All&q=IU2EFA-12
[21:16] <Darkside> Viproz: with the RS92 decoder, it looks like the serial number and the rest of the data have different CRCs
[21:16] <Darkside> so occasionally you would end up with a valid position, but a dud callsign
[21:17] <Viproz> Oh okay that's not an issue for the M10 then, for the frameID I don't have a real one so I put the date and time values but I don't know what it's used for, is it good enough to have something that changes each new decoding ?
[21:18] <Darkside> hmm
[21:18] <Darkside> it needs to be deterministic between multiple receiving stations
[21:18] <Darkside> as its used as the sequence ID in the packet uploaded to habitat
[21:19] <Darkside> hmm.... it shoudl also always be increasing, i.e. cant go back to 0 during a flight (i think...)
[21:20] <Viproz> Okay, it is sequential and the same for everyone so should be good I guess
[21:20] <Darkside> surprising that there is no packet number
[21:21] <Viproz> I guess since they broadcast the date and time (in s for the M10gtop since it emits once every seconds and in ms for the oterone) there is no need for packet number
[21:21] <Viproz> For the code I've used C++, it's not an issue to compile right ?
[21:21] <Darkside> its more its a standard format we use with habitat
[21:22] <Darkside> the frame ID really needs to be an integer
[21:22] <Viproz> 32bit integer ?
[21:23] <Darkside> yeah
[21:24] <Viproz> Might have an overflow problem then, I'll check
[21:24] <Darkside> hmm, i think it can go back to zero during the flight actually
[21:24] <Darkside> without big issues
[21:25] <Darkside> so could possibly just use %H%%M%S as the sequence ID
[21:25] <Darkside> worth a shot anyway
[21:26] <Viproz> Yeah can probably throw in the day too so that it cannot go back even if launched right before midnight
[21:27] <Darkside> could have a end of month rollover ;-)
[21:27] <Darkside> but it may not be a problem
[21:28] <Darkside> did you end up seeing if rs_Detect would detect a M10 reliably?
[21:29] <Viproz> Yes it does no problem, you only use it to detect it and then you switch to the sonde executable right ?
[21:30] <Darkside> yup
[21:31] <Darkside> the real trick may be how i select the frequenncy to search on...
[21:32] <Darkside> i mean, the frequency to run rs_Detect on
[21:33] <Darkside> may end up needing to add a 'M10 mode' if they are not on-frequency as you sugest
[21:33] <Darkside> though it hink you said you hadn't done any PPM correction on your SDR
[21:33] <Viproz> Darkside, the frequency offset seems to be much better than what I initially thought
[21:35] <Viproz> I set my ppm correctly now and I can still see a small drift but it's not bad and might still be my sdr temperature fluxuating, I'll probably buy a temperature stabilized one
[21:36] <Darkside> its more the assumption that the sonde transmit frequency is on a 10 kHz (or similar) quantised boundary
[21:36] <Darkside> that assumption is valid for the RS92/RS41 and the DFM sondes
[21:36] <Darkside> and the iMet sondes
[21:39] <Viproz> In france I've only seen them on exact in MHz or in 100kHz increment
[21:40] <Darkside> oh good
[21:40] <Viproz> for example Paris is 401MHz and their backup is 402MHz
[21:40] <Darkside> the biggest issue is you often get multiple peaks around the actual frequency due to the modulation
[21:40] <Darkside> so my current trick is to quantise the frequency to the nearest 10 kHz, and then search on that
[21:41] <Darkside> this works, but only if the receiver has been calibrated
[21:41] <Darkside> hence all the instructions in the setup regarding checking your PPM offset and using a SDR with a TCXO
[21:41] <Viproz> hum, when you look at a M10 what you see is two peaks on the side first, might be an issue then
[21:42] <Darkside> how far off from the centre?
[21:44] <Viproz> https://imgur.com/a/Ztl9dLf
[21:44] <Viproz> (disregard the global offset, my sdr was cold or the recording was made before tuning it)
[21:45] <Darkside> hmmmmmm
[21:45] <Darkside> yeah that might be an interesting one
[21:46] <Darkside> though it coudl be as simple as seetting the quantization value to something higher, like 100 khz
[21:46] <Viproz> added a picture with unnecessary green circles to highlight what we see the furthest to the album
[21:47] <Darkside> yeah i se the modulation spikes
[21:47] <Darkside> we see similar on the RS92s
[21:48] <Darkside> but they are usually close enough to the actual centre freq that it still quantises in correctly
[21:48] <Darkside> perhaps not the case with the M10
[21:49] <Viproz> I don't understand what you use the peak for, you need to shift the center frequency ?
[21:51] <Darkside> i peak detect to find the sondes frequency
[21:51] <Darkside> across the entire band
[21:51] <Darkside> if you knotw the frequency in advance you can just enter it into a whitelist and it'll search there first, but around here the sondes change frequencies regularly
[21:53] <Viproz> Okay, so the offset of the peaks are exactly 5kHz so it will probably be a problem with a 10kHz spacing
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[21:57] <Darkside> yup
[21:58] <Darkside> we may just need to make a note that if you expect to be tracking M10s, to set the quantization value to 100 khz..
[21:58] <Darkside> there might be a cleaner approach, but that would do for now..
[21:59] <Darkside> ok gtg
[21:59] <Viproz> I'll poke around, maybe by detecting the two peaks
[22:00] <Viproz> Okay, see you around
[22:00] <Darkside> cya..
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[00:00] --- Mon Dec 17 2018