highaltitude.log.20190602

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[00:20] <SpacenearUS> New vehicle on the map: 03VK5ST-9_chase - 12https://tracker.habhub.org/#!qm=All&q=VK5ST-9_chase
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[09:25] <buzz53> Planning to launch JOAL13 from Ipswich UK today between 12:00-13:00 local
[09:25] <buzz53> LoRa mode 4 with SSDV 869.8 MHz
[09:34] <PE2BZ> good morning. anyone with a websdr near Italy with 434 MHz ism band?
[09:35] <PE2BZ> buzz53, Good luck with the flight !
[10:13] <SpacenearUS> New position from 03KA9CQL-11 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=KA9CQL-11
[10:21] <Darkside> PE2BZ: i've updated horusbinary so it auto downloads the latest payload ID list
[10:30] <PE2BZ> Thanks Mark ! I will remind the crowd to update :-)
[10:30] <Darkside> test it yourself first :P
[10:30] <Darkside> just to make sure i havent messed up
[10:35] <dbrooke> 2019-06-02 11:33:59,231 INFO: Payload ID list updated successfuly.
[10:35] <dbrooke> works for me
[10:35] <Darkside> cool
[10:36] <Darkside> if you specify a payload list (--payload-list filename.txt) other than the default, it'll use that instead
[10:36] <Darkside> but otherwise it'll download and update the local copy of payload_id_list.txt on startup
[10:36] <dbrooke> OK, it did update -> Jun 2 11:33 payload_id_list.txt
[10:36] <Darkside> excellent
[10:51] <SpacenearUS> New vehicle on the map: 03PeakL - 12https://tracker.habhub.org/#!qm=All&q=PeakL
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[10:57] <SpacenearUS> New vehicle on the map: 03JHSA - 12https://tracker.habhub.org/#!qm=All&q=JHSA
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[11:39] <SpacenearUS> New vehicle on the map: 03JOAL13 - 12https://tracker.habhub.org/#!qm=All&q=JOAL13
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[12:08] <buzz53> JOAL13 imminent
[12:54] <buzz53> JOAL13 short delay while we inflate another envelope- don't ask!
[13:01] Action: PE2BZ wouldn´t dare to ask what happened ;-)
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[13:38] <Ian_> Good luck with the second envelope. At least you had a backup plan in position. Fingers crossed for you buzz53 :)
[13:41] <SpacenearUS> New position from 03PY2UEP-4FSK after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=PY2UEP-4FSK
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[13:52] <buzz53> JOAL13: OK, so we moved the ogave plant, and are about to try again!
[13:54] <g8fjg> pointy
[13:54] <PE2BZ> We didn´t have to ask ;-)
[14:00] <g8fjg> good sig ...blue line not on me yet
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[14:06] <g8fjg> running about 10% packet loss here
[14:08] <buzz53> really pleased with the piccies. It's a £3.50 chinese pi clone
[14:09] <PE2BZ> nice quality pics indeed !
[14:09] <g8fjg> hardly a trace of vegetation on the lens ;-)
[14:09] <PE2BZ> Are you aiming on a dry landing ?
[14:10] <buzz53> BTW images are buffered to get more from low level, it will catch-up later (hopefully)
[14:11] <buzz53> No, it's a burial at sea for this one
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[14:19] <daveake> I've got a GoPro SSDV flight coming up .. be interesting to see what the pix are like from that
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[14:28] <buzz53> We lost the uplink earlier than expected unfortunately
[14:31] <daveake> Too far? Too close ?
[14:35] <buzz53> Dunno, gateway started with 1/4 wave, switched to 8 ele yagi, seems pointed OK
[14:36] <buzz53> Odd that the downlink isn still qujite goos, but not a single uplink for ages (count field in tele)
[14:36] <buzz53> Might be interference but I'd have expected to get some through, sent every 30 secs
[14:38] <g8fjg> gps stuck
[14:40] <buzz53> Should still be sending though
[14:41] <buzz53> Was it reasonably strong with you, then just cut off suddenly?
[14:42] <g8fjg> still receiving but same location ,,,every 6-10 seconds
[14:42] <g8fjg> snr about 2
[14:43] <daveake> same gps time too ?
[14:43] <g8fjg> yep
[14:43] <daveake> Sounds like GPS given up
[14:43] <daveake> 10km would be about coldest part
[14:46] <g8fjg> I'll leave everthing running off to do dinner
[14:47] <g8fjg> got 8122 packets with 390 bad crc
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[15:02] <buzz53> Last board temp was +4.7 so should be OK. Pretty sure it keep transmitting, will try with the actual code later
[15:03] <buzz53> Aaaaaaaaaagh, it was a Quectel, wonder if it was set right? Anyway should still have been transmitting!
[15:07] <daveake> Ah righty ... it'll probably keep sending the same position to your processor
[15:09] <buzz53> But it should be OK if it's the right mode, no? I see PITS sets "Pedestrian" below 5000 and "Balloon" above?
[15:09] <buzz53> Have you flown one yourself?
[15:16] <daveake> Yep. Worked.
[15:22] <g8fjg> popped into shack still good snr...3 last one every 6-10 sec ,,,not sure if buzz53 is rxing still ( 694 telem here , see how many later)
[15:23] <buzz53> Sorry are you stiull receiving now?
[15:25] <g8fjg> yes
[15:25] <SpacenearUS> New vehicle on the map: 03BMCK1R - 12https://tracker.habhub.org/#!qm=All&q=BMCK1R
[15:25] <g8fjg> 731 telem now
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[15:26] <g8fjg> in between beers and BBQ :-))
[15:27] <buzz53> Wierd, we have had no telemetry since 4 packets after GPS froze at 10004 metres!
[15:28] <buzz53> Habhub shows your last upload 51 minutes ago, I'm guessing that is not actually correct, but i becasue GPS time is stuck?
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[15:28] <daveake> Yes
[15:30] <daveake> If you look at the logtail you'll see the sentence ID going up but no new GPS
[15:34] <buzz53> OK, Habitat timestamping seems a bit counterintuitive but it is how it is!
[15:35] <buzz53> Just looking at the Quectel datasheet it says 18000m max regardless of mode, I thought I had checked that so I'm puzzled.
[15:35] <buzz53> Oohhh it's back!
[15:40] <daveake> Which GPS exactly ?
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[15:45] <g8fjg> yo back 200km + snr-3 rssi 109
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[15:50] <g8fjg> looks like I'm done... thanks for flight..
[15:52] <buzz53> G8FJG again I am in awe of your setup, can you briefly describe it (think you may already have done)
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[15:53] <daveake> FWIW ... this is your flight being grabbed from SNUS (too far for me to Rx directly) https://usercontent.irccloud-cdn.com/file/nPR8FpSM/image.png
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[15:54] <buzz53> Dave, it's a Quectel L70-R, or at least that's what it says on the lid.
[15:55] <daveake> OK. Well the L80 is supported by PITS
[15:56] <daveake> Find out the chip it uses and look that up for the datasheet
[15:56] <buzz53> Will do, ta
[15:58] <buzz53> Well from product sheet (i.e. marketing blurb!) : "Balloon mode, for high altitude up to 80km"
[15:59] <daveake> They use The L80 does but only in balloon mode
[15:59] <g8fjg> back again ...10 ele home made LFA antenna experimental design by G0KSC h/made lna similar to my eme ones ..
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[16:01] <daveake> https://usercontent.irccloud-cdn.com/file/YVXrRxBj/L80%3A
[16:01] <daveake> Aimed at the Mexican market I guess :)
[16:07] <buzz53> Dave, where did that come from?
[16:08] <g8fjg> https://i.imgur.com/JC0c7FZ.jpg
[16:11] <daveake> Sierra Wireless make the chip on the L80, and it's in their manual for that chip.
[16:11] <daveake> Dunno what the L70 uses
[16:12] <buzz53> OK thanks, need to some more research then
[16:13] <daveake> Seems clear that it gave up at 10km
[16:22] <SpacenearUS> New vehicle on the map: 03SANTAFE_Chase - 12https://tracker.habhub.org/#!qm=All&q=SANTAFE_Chase
[16:22] <buzz53> Can't find any reference to Sierra Wireless, seems L70 is Mediatak MTK3337 and L80 is MTK3339.
[16:23] <buzz53> But I suppose it's really a software limit so also depends on the internal code as well
[16:23] <daveake> I know that Adafruit used one of them in their "Ultimate GPS" that really wasn't that ultimate, till either they got new firmware or changed the chip; dunno which
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[16:31] <daveake> The only manual I can find for the L70-R that mentions balloon mode doesn't mention the altitude limit
[16:31] <daveake> Command is same as for L80
[16:43] <SpacenearUS> New position from 03KD0AWK-14 after 034 days silence - 12https://tracker.habhub.org/#!qm=All&q=KD0AWK-14
[16:43] <SpacenearUS> New vehicle on the map: 03KD0AWK-15 - 12https://tracker.habhub.org/#!qm=All&q=KD0AWK-15
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[17:02] <buzz53> The manual I've got only mentions "18000" which we wondered if was a typo for "80000" :-(
[17:02] <SIbot> In real units: 18000 in = 457 m
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[17:17] <SA6BSS-Mike> buzz53: most gps limit out at 10000m , ublox runs to 12500 , and there is one we realy dont know how high its working without setting "flight" mode and thats the atgm336
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[17:17] <SA6BSS-Mike> its been tested up over 14000m on a small upp down, so try that next time :)
[17:18] <SA6BSS-Mike> its just a cheap as the l70r
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[17:27] <buzz53> Hi Mike, thanks. We've used uBlox to over 40km in "flight mode", but the M70 is really cheap and on paper should work.
[17:28] <buzz53> Hadn't heard of the one you mention, will take a look. Meantime need to build another payload with L70 and have a play.
[17:36] <daveake> Have a play with the comms to the GPS - if you send a flight mode command you should get a response back
[17:37] <daveake> It's the same response regardless of which mode you select :/ but at least you'll know if it's received it or not
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[17:38] <LW2DTZ> Hello
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[17:46] <SpacenearUS> New vehicle on the map: 03ZURG - 12https://tracker.habhub.org/#!qm=All&q=ZURG
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[17:53] <buzz53> G8FJG: Thanks for saving our bacon tody, we would have come to entirely the wrong conclusion had you not kept receiving
[17:55] <buzz53> We are both encouraged but also a bit depressed by the gulf in performance between our stations
[17:56] <buzz53> We have both home-made and commercial 8-ele yagis and although I'm sure yours is better it can't explain such a diffference
[17:56] <SA6BSS-Mike> buzz53: you can take almosta all gps:s and data cheat says 18000m for some reason but they all crap out at 10k
[17:58] <buzz53> Even with the LNA it seems hard to believe. I assume you're using a Pi/uPu Lora sort of RX?
[17:59] <buzz53> We had a second outstation running with 1/4 wave on a mast and that seemed poor too.
[17:59] <buzz53> The fact that the uplink and downling were both disappointing might suggest antenna probs. All very puzzling.
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[18:01] <buzz53> Off to work for two weeks so plenty of time to ponder anyway, thanks again, Alan
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[18:01] <SpacenearUS> New vehicle on the map: 03DROP - 12https://tracker.habhub.org/#!qm=All&q=DROP
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[18:40] <PE2BZ> buzz53, how did you set the focus of the camera to ¨infinity¨ ? I have to wait for the moon but when it´s at the right side of the house it´s either cloudy or 3 AM...
[18:45] <g8fjg> buzz53 believe me building/designing an antenna ( that actually works) for 869 is no mean feat. Justin G0KSC of Innovantenna spent many hours on the design,
[18:47] <g8fjg> and I spent more getting it right.. using VNA's and 40+years of messing around with antenna
[18:47] <buzz53> Ben, focus doesn't seem too critical to set, I just run raspistill and look at distant objects on the HDMI monitor
[18:49] <buzz53> g8fjg, when I get back in 2 weeks, could we pick your brains? Could we come and visit even?
[18:50] <g8fjg> it works as spec .. sometimes a bit too sharp...you have to point it in the right direction within a few degrees ,, its almost rocket science
[18:50] <g8fjg> yes no probs look mr up on qrz.com
[18:50] <g8fjg> me
[18:51] <buzz53> Fab, thanks again
[18:51] <g8fjg> np
[18:51] <g8fjg> afk back to QO-100 ,,,really in space,,,cheers
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[19:15] <SpacenearUS> New position from 03MWH01 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=MWH01
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[20:10] <SpacenearUS> New vehicle on the map: 03BMCK1L - 12https://tracker.habhub.org/#!qm=All&q=BMCK1L
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[00:00] --- Mon Jun 3 2019