highaltitude.log.20180106

[00:03] <kalashnikov> fsphil: they give examples but not for rtty o ssdv http://wiki.dragino.com/index.php?title=Lora/GPS_HAT
[00:05] <fsphil> doing rtty with that will be very difficult
[00:05] <fsphil> I doubt it would be possible
[00:06] <fsphil> you could send gps and ssdv over lora packets, that's how the Pi in the Sky boards work
[00:06] <fsphil> Darkside: it's very sensitive to frequency drift
[00:06] <fsphil> definitly needs AFC
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[00:09] <SpacenearUS> New vehicle on the map: 03KF5PGW-11 - 12https://tracker.habhub.org/#!qm=All&q=KF5PGW-11
[00:10] <kalashnikov> yes, the idea is to send images through SSDV, but this model is not designed for that, and it seems that the configuration of the pins is where the problem is
[00:13] <fsphil> that shouldn't be too bad, once you figure out the pins used
[00:14] <fsphil> there's bound to be a schematic
[00:14] <fsphil> http://wiki.dragino.com/index.php?title=Lora/GPS_HAT#Wiring
[00:14] <fsphil> or that
[00:15] <fsphil> once it's setup it should run like any other lora sx chip over spi
[00:18] <Darkside> fsphil: what it needs is a FSK demod that isnt based around a FM demod
[00:18] <fsphil> yeah true
[00:19] <fsphil> I'm having to tweak ppm to keep it going :)
[00:19] <Darkside> i've made some progress using david rowe's fsk_demod, but i kep getting failed CRCs
[00:19] <Darkside> fsphil: im wondering if thats more pointing to your receiver than to the payload
[00:19] <fsphil> oh definity
[00:20] <Darkside> then get a receiver with a TXCO :-)
[00:20] <fsphil> it's sitting in a very cold roof
[00:20] <dbrooke> kalashnikov: there was some discussion about getting the dragino working with daveake's lora gateway but I don't know if the device tree pin remapping solved the problem https://github.com/PiInTheSky/lora-gateway/issues/31
[00:22] <Darkside> jeez, VK2HAB-9 is making an absolute mess of the tracker
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[00:22] <dbrooke> my auto_rx system had lost the rtl-sdr - I've restarted it but it's still scanning so maybe too late for tonight's sonde
[00:23] <Darkside> depends how far away it is really..
[00:25] <kalashnikov> fsphil: "like any other lora sx chip over spi" , have any totorial for this ? im new on this small rf modules :D
[00:26] <SpacenearUS> New vehicle on the map: 03N0220114 - 12https://tracker.habhub.org/#!qm=All&q=N0220114
[00:26] <Darkside> kalashnikov: there's a few libraris around to do it
[00:26] <dbrooke> there we are
[00:27] <Darkside> kalashnikov: pySX127x is one
[00:27] <kalashnikov> dbrooke: tnks a wil look to his, ... its beter take out the rf module and use it apart
[00:27] <Darkside> oh wait, its now pyLora
[00:27] <Darkside> https://github.com/mayeranalytics/pySX127x
[00:27] <Darkside> but anyway
[00:27] <Darkside> thats a python library to talk to the LoRa chipsets
[00:30] <fsphil> woo, this is the longest I've managed to track one
[00:30] <fsphil> might even see he burst
[00:30] <fsphil> the*
[00:30] <Darkside> heh
[00:30] <kalashnikov> Darkside: if have another python library for that :D
[00:31] <Darkside> fsphil: get a better rtlsdr :-)
[00:31] <Darkside> the v3's work well
[00:31] <fsphil> yes this one is probably the first I got
[00:32] <fsphil> woo, burst
[00:32] <dbrooke> I should get a better one, the 3 I have are all in permanent use now
[00:34] <dbrooke> I suppose the ADS-B isn't so susceptible to drift and the OGN one recalibrates from GSM
[00:34] <Darkside> OGN?
[00:34] <Darkside> oh, open glider network
[00:34] <dbrooke> yeah
[00:34] <fsphil> heh, it's looking like it might land in a lake
[00:34] <Darkside> also known as "fuck you flarm"
[00:34] <dbrooke> 8-)
[00:34] <dbrooke> it decodes FLARM anyway
[00:34] <Darkside> how the hell they managed to get a monopoly on that stuff i dont know
[00:36] <dbrooke> but that's a binary blob since they reverse engineered it and don't want to reveal how
[00:37] <Darkside> :(
[00:37] <Darkside> that sucks
[00:37] <Darkside> closed protocol in a safety-of-life system?
[00:37] <Darkside> wtf
[00:39] <dbrooke> ikr
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[00:41] <fsphil> lost the sonde at 13km. boo
[00:44] <fsphil> oh it's going again
[00:45] <dbrooke> I think it was yesterday the nearer one dropped out but I then picked up a few positions from the Herstmonceax one before it lost that and picked up the other again
[00:46] <fsphil> my antenna isn't well placed so I don't think I'll keep it much longer
[00:47] <fsphil> 7km
[00:47] <dbrooke> what range?
[00:49] <fsphil> mmm. guessing about 40km
[00:49] <fsphil> which is really close, but I've not had much luck with these sondes before
[00:50] <fsphil> 4.8km and still going
[00:50] <fsphil> stopped at 4.5km
[00:51] <fsphil> it's outside the green circle, not too bad
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[00:52] <dbrooke> from the map I'd say that's about 75km range, I have my position in firefox so it tells me mine's at 86km and I've seen it decode out to about 100km
[00:53] <dbrooke> assuming you're in Cookstown that is
[00:53] <fsphil> yeah
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[00:54] <fsphil> ok good bit further than I thought
[00:55] <fsphil> the frequency drive might be my main issue. I'll try swapping the rtlsdr tomorrow
[00:55] <fsphil> bah, drift*
[00:55] <Darkside> would be nice to build in support for something not RTLSDR
[00:55] <Darkside> could definitely do it with gnuradio
[00:56] <Darkside> but i'd really prefer *not* to have gnuradio as a dependency
[00:56] <Darkside> not as much of an issue now that theres a recent version in the raspbian jessie repo
[00:57] <dbrooke> mine's in the room so temperature is reasonably stable but I don't know how accurate my ppm setting is as I just calibrated against an amateur repeater
[00:57] <Darkside> dbrooke: got 4G towers nearby?
[00:58] <Darkside> https://gist.github.com/darksidelemm/b517e6a9b821c50c170f1b9b7d65b824
[00:59] <dbrooke> probably but they'll be up at higher frequencies and I have a duplexer in circuit, I tried GSM without any luck
[00:59] <Darkside> hrm
[00:59] <Darkside> no 750 mhz 4G in the UK?
[00:59] <Darkside> interesting
[01:01] <dbrooke> there should be but when I say duplexer I mean triplexer for 144/430/1200 so I suspect it low passes below that
[01:01] <Darkside> ah
[01:02] <Darkside> bypass it temporarily?
[01:02] <dbrooke> that means going in a cold loft, but yeah ...
[01:03] <Darkside> heh
[01:03] <Darkside> better than going on a roof in 42 degrees
[01:03] <Darkside> thankfully dont need to do that today :P
[01:04] <dbrooke> I mean I lost that one at 85km range and 1km altitude which isn't too bad for a 430Mhz colinear and no preamp
[01:04] <Darkside> thats about what i was getting when i was using my diamond X50
[01:05] <Darkside> thats pretty much goign to be your radio horizon right?
[01:05] <dbrooke> there's a fair length of RG213 too
[01:05] <dbrooke> elevation 0.29
[01:05] <Darkside> nice
[01:05] <Darkside> yeah i've got something like 20-30m of LMR400 between my rx and my antenna at the moment
[01:06] <Darkside> somethign like 1.5 db loss i think t
[01:06] <Darkside> so not bad really
[01:06] <dbrooke> and my antenna may not be entirely vertical as it seems to have come a bit loose at the base
[01:07] <Darkside> uh oh
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[01:09] <dbrooke> I need to see if I can drill and tap the base for a couple more bolts, it only has one and relies on a tight fit in the support tube, which it no longer seems to have, to keep it vertical
[01:10] <Darkside> what antenna are you using?
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[01:12] <dbrooke> it's a Moonraker, I forget the actual model, seems to perform well apart from this one mechanical issue
[01:14] <dbrooke> SQBM500N according to what I put in dl-fldigi
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[01:14] <dbrooke> https://www.moonraker.eu/sqbm500n-mkii-dual-band-2-70-vertical-super-gainer-ntype
[01:15] <dbrooke> not sure if I have the MkII as I've had it a while
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[01:17] <dbrooke> anyway, it's (past) time for bed here ...
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[01:52] <SpacenearUS> New vehicle on the map: 03N1730449 - 12https://tracker.habhub.org/#!qm=All&q=N1730449
[01:52] <SpacenearUS> New vehicle on the map: 03??_chase - 12https://tracker.habhub.org/#!qm=All&q=%3F%3F_chase
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[05:50] <SpacenearUS> New vehicle on the map: 03HORUSLORA1 - 12https://tracker.habhub.org/#!qm=All&q=HORUSLORA1
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[07:23] <SpacenearUS> New position from 03SP6ZWR after 035 days silence - 12https://tracker.habhub.org/#!qm=All&q=SP6ZWR
[07:30] <SpacenearUS> New vehicle on the map: 03SP6ZWR-11 - 12https://tracker.habhub.org/#!qm=All&q=SP6ZWR-11
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[07:42] <SpacenearUS> New vehicle on the map: 03SQ6NLN_chase - 12https://tracker.habhub.org/#!qm=All&q=SQ6NLN_chase
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[08:50] <garymortimer> So...is there a really slowly written set of instructions for dummies anywhere for raspberrypi and radiosondes.. I have tried but must be missing something above my pay grade
[08:52] <Darkside> ah
[08:52] <Darkside> the best i can offer is this: https://github.com/projecthorus/radiosonde_auto_rx/wiki
[08:52] Nick change: fl__0 -> fl_0
[08:52] <Darkside> but yea, its targeted at people who have some experience with running raspbian on a raspberry pi
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[08:54] <garymortimer> Just started to get somewhere realising I need to be in the right directory. We only have iMet here,but a boat might launch a supported one
[08:54] <Darkside> oh
[08:55] <Darkside> yeah sorry, no experience with the iMets
[08:55] <Darkside> if i could get hold of one i could probably add support
[08:55] <garymortimer> If I find one I will send it
[08:55] <garymortimer> Most local ones go out to sea from Durban
[08:56] <Darkside> what frequency do they run on?
[08:56] <garymortimer> One might get across from Bloemfontain
[08:56] <garymortimer> 402 exactly, can always hear them
[08:56] <Darkside> ok
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[09:10] <garymortimer> @darkside to be a pain File "auto_rx.py", line 27, in <module> from habitat_utils import * File "/home/pi/radiosonde_auto_rx/auto_rx/habitat_utils.py", line 7, in <module> import crcmod ImportError: No module named crcmod
[09:12] <Darkside> did you run the apt-get line in the instructions?
[09:12] <Darkside> the crcmod library is one of the packages to install
[09:13] <Darkside> https://github.com/projecthorus/radiosonde_auto_rx/wiki#31-software-dependencies
[09:13] <garymortimer> Idid, let me run that again
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[09:15] <garymortimer> 2018-01-06 09:15:03,436 INFO:Attempting sonde detection on 403.200 MHz 2018-01-06 09:15:04,328 INFO:Attempting sonde detection on 400.920 MHz
[09:15] <garymortimer> i think we are there
[09:16] <Darkside> right
[09:16] <Darkside> so problem right now is im pretty sure auto_rx doesnt know about iMet sondes
[09:16] <Darkside> let me check
[09:17] <Darkside> hrm
[09:18] <Darkside> damn, the imet sondes need different receive settings
[09:18] <garymortimer> cool, holding out for ship launch
[09:18] <PE2BZ> Darkside I have had auto_rx running yesterday with the logper in direction East (Germany) it did pick up several position frames from SPG sondes > 200 km away. Then, Uccle did travel with an RS41, about 100km distance, only 1 position string. Last night Herstmonceux from the UK gos as close as 80 km (above the northsea, so no recovery plans) but that was only received one single string also.
[09:18] <Darkside> that makes detecting them a bit more difficult
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[09:19] <Darkside> PE2BZ: i'm kind of surprised at the poor performance you[re seeing
[09:19] <Darkside> the melb, perth and adelaide stations here are repeatedly receiving signals hundreds of km away
[09:19] <garymortimer> well I shall leave this running and who knows the airforce might use this type
[09:20] <garymortimer> thanks very much for your help
[09:20] <SpacenearUS> New vehicle on the map: 03SQ5TDW_chase - 12https://tracker.habhub.org/#!qm=All&q=SQ5TDW_chase
[09:20] <PE2BZ> RS41 at 100 m away get decoded within seconds. I tried 2 different dongles. The rinex for the rs92 works quite nice however :-)
[09:21] <Darkside> PE2BZ: what rtl dongles are you using?
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[09:21] <PE2BZ> But I will move the auto_rx to my work location and connect it to the same antenna as used for my websdr
[09:22] <PE2BZ> R820t tuner types, one blue and one white with IEC connector.
[09:22] <Darkside> TXCO?
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[09:23] <Darkside> i suspect the power on PPM drift of many rtlsdrs is enough to throw off the RS41 demod
[09:24] <Darkside> i really need to figure out a better demod option
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[09:25] <PE2BZ> https://imgur.com/a/ShwVa so close :-(
[09:25] <PE2BZ> No txco at home. They are running for SDR and waterfall on the qrl
[09:25] <Darkside> right
[09:25] <Darkside> that will probably not help
[09:26] <Darkside> i'm using the RTLSDR v3 units
[09:26] <Darkside> but yeah, there is still some ongoing work to using a different demod
[09:26] <Darkside> problem is i think to do that i'm going to have to move towards a gnuradio solution
[09:26] <Darkside> which is not what i wanted
[09:34] <PE2BZ> Perhaps I´d better exchange one txco type with the one at home and try again if that improves first
[09:36] <Darkside> and make sure the PPM offset is correctly set
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[09:50] <PE2BZ> They are both calibrated to GSM900 and checked on the central Dutch repeater, so that´s taken care of
[10:00] <Darkside> ok
[10:02] <SpacenearUS> New position from 03PE2BZ after 0317 days silence - 12https://tracker.habhub.org/#!qm=All&q=PE2BZ
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[11:20] <SpacenearUS> New vehicle on the map: 03M2543291 - 12https://tracker.habhub.org/#!qm=All&q=M2543291
[11:20] <SpacenearUS> New vehicle on the map: 03M4613085 - 12https://tracker.habhub.org/#!qm=All&q=M4613085
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[12:24] <SpacenearUS> New vehicle on the map: 03RSIST - 12https://tracker.habhub.org/#!qm=All&q=RSIST
[12:26] <SpacenearUS> New vehicle on the map: 03N1730439 - 12https://tracker.habhub.org/#!qm=All&q=N1730439
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[12:50] <PE2BZ> Darkside if you´re still there. The next RS41 from UK was detected in the scan at 200 km distance, 23 km altitude, but the software does not decode. It is still showing this info: found: RS41 (2018-00-06 12:29Z)
[12:50] <PE2BZ> 2018-01-06 12:29:17,824 INFO:Detected a RS41!
[12:50] <PE2BZ> 2018-01-06 12:29:17,827 INFO:Starting decoding of RS41 on 404.800 MHz
[12:50] <PE2BZ> 2018-01-06 12:29:17,833 INFO:Started Internet Push thread.
[12:50] <PE2BZ> 2018-01-06 12:29:17,844 INFO:Started OziPlotter Push thread.
[12:50] <PE2BZ> sample_rate: 48000
[12:50] <PE2BZ> bits : 8
[12:50] <PE2BZ> channels : 1
[12:50] <PE2BZ> samples/bit: 10.00
[12:50] <PE2BZ>
[12:51] <Darkside> PE2BZ: detect can occur many dB below decode
[12:52] <Darkside> rtl_fm -p 0 -g -1 -M fm -F9 -s 15k -f 404800000 | sox -t raw -r 15k -e s -b 16 -c 1 - -r 48000 -b 8 -t wav - lowpass 2600 2>/dev/null > test.bin
[12:52] <Darkside> can you please run that command, fixing the ppm values as appropriate
[12:52] <Darkside> and send me a few seconds of the output?
[13:02] <PE2BZ> I will as soon it gets nearby again. Its 211 km and 2781 m height so no RX anymore, not even at 27 m asl ;-)
[13:03] <Darkside> ah
[13:03] <Darkside> yeah ok thats a bit late
[13:03] <PE2BZ> np, they come every now and then. Tomorrow the wind should shift and get De Bilt from our own country in my direction.
[13:08] <SpacenearUS> New vehicle on the map: 03L2320316 - 12https://tracker.habhub.org/#!qm=All&q=L2320316
[13:09] <Darkside> hah, a new receiver
[13:10] <Darkside> some random in italy
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[13:25] <PE2BZ> Now for the wild guesses: someone offered me 4 balloons with 2 m lenght while laying on the floor. How many grams would that be ?
[13:26] <Darkside> > 1000g
[13:26] <PE2BZ> For caclulations I start with 1200 gram. Certainly would need a lot more HE than the 200 gram types used so far...
[13:30] <PE2BZ> So, that could reach > 37 km altitude. If I add a 170 gram box with 12 solar panels and one supercap and an RS41 without batteries. On the other hand, I have that much lift power why would I use solar panels ;-)
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[14:24] <SpacenearUS> New position from 03HIRF-6 after 0311 days silence - 12https://tracker.habhub.org/#!qm=All&q=HIRF-6
[14:34] <SpacenearUS> New position from 03HIRFW-6 after 0320 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HIRFW-6
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[18:12] <Laurenceb_> !whereis HIRFW-6
[18:12] <SpacenearUS> 03Laurenceb_: 03HIRFW-6 was over 03La Vallée-de-l'Or Regional County Municipality, QC, Canada 10(48.60607,-76.87119) at 0312332 meters about 0319 minutes ago
[18:12] <Laurenceb_> flying in 3 calendar years
[18:20] <PE2BZ> Congrats !
[18:20] <PE2BZ> Would that also be a ¨first¨ ?
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[18:44] <Laurenceb_> PE2BZ: no
[18:44] <Laurenceb_> first for amateur
[18:44] <Laurenceb_> coming up to 16 months in the air
[18:51] <PE2BZ> Nice !
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[19:06] <SpacenearUS> New position from 03KJ4TDM-11 after 037 days silence - 12https://tracker.habhub.org/#!qm=All&q=KJ4TDM-11
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[19:42] <PE2BZ> Laurenceb_ https://imgur.com/a/3meUQ
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[22:18] <Ian_> Off topic, but may be of interest : http://gridwatch.templar.co.uk/
[22:21] <bertrik> interesting
[22:31] <SpacenearUS> New vehicle on the map: 03N3330634 - 12https://tracker.habhub.org/#!qm=All&q=N3330634
[22:36] <russss> also openinframap.org is something I run
[22:37] <Darkside> 32 jigga watts!
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[22:39] <mwheeler> russss: very cool.
[22:40] <Darkside> mwheeler: not sure if gm passed it on, but i think a 'sonde filter' for the tracker mightbe useful...
[22:41] <Darkside> not sure how to implement it though
[22:41] <mwheeler> ah yeah he told me about that
[22:41] <Darkside> just needs to hide the clutter
[22:41] <Darkside> not entirely sure the auto-payload-doc thing was a good idea in retrospect >_>
[22:41] <Darkside> i guess if we can filter out the sondes it will be fine
[22:50] <SpacenearUS> New vehicle on the map: 03KF5PGW-10 - 12https://tracker.habhub.org/#!qm=All&q=KF5PGW-10
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[22:57] <SpacenearUS> New vehicle on the map: 03N1620314 - 12https://tracker.habhub.org/#!qm=All&q=N1620314
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[23:14] <Darkside> looks like we have a receiver in germany!
[23:14] <dbrooke> Darkside: maybe change the <id> from just serial number to e.g. auto_rx_{serial number} assuming theres no length issue, then at least people could put !auto_rx* in the filter (it doesn't seem to do regex)
[23:14] <Darkside> good idea
[23:15] <Darkside> the thought was to add an option in the settings to filter out all the ones that match the serial number regex
[23:15] <Darkside> and possibly have that filter enabled by default
[23:16] <dbrooke> yeah, if the tracker can be changed to do something like that it would be better
[23:16] <Darkside> but yeah, this has gotten a bit more popular than i had intended >_>
[23:17] <Darkside> i mean, its nice to see activity on the tracker :P
[23:17] <Darkside> but when you look at a days worth of track history, it gets a bit cluttered
[23:17] <SpacenearUS> New vehicle on the map: 03M4416058 - 12https://tracker.habhub.org/#!qm=All&q=M4416058
[23:17] <SpacenearUS> New vehicle on the map: 03M4613080 - 12https://tracker.habhub.org/#!qm=All&q=M4613080
[23:17] <dbrooke> more clutter 8-)
[23:17] <Darkside> hrm where's adelaide
[23:18] <dbrooke> South Australia ?
[23:18] <Darkside> as in, where's the adelaide sonde :-)
[23:18] <Darkside> slack buggers at the local sonde launch station
[23:18] <Darkside> :P
[23:19] <dbrooke> not automatic ?
[23:19] <Darkside> no most of the launch sites in australia are manual
[23:19] <Darkside> there we go
[23:19] <Darkside> downloading ephemeris...
[23:19] <Darkside> aaaand uploading
[23:19] <SpacenearUS> New vehicle on the map: 03M2523559 - 12https://tracker.habhub.org/#!qm=All&q=M2523559
[23:20] <dbrooke> only 2 manned in UK https://www.metoffice.gov.uk/learning/making-a-forecast/first-steps/making-observations/upper-air
[23:20] <Darkside> all the rest are the vaisala autosonde stations?
[23:20] <Darkside> yep
[23:21] <dbrooke> I presume so (there are 6 in total)
[23:21] <Darkside> we have a few autosonde stations here in australia. the RS41 we chased the other week was from one of those
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[23:38] <fsphil> no aunch from castor bay tonight
[23:38] <fsphil> stupid l key
[23:40] <dbrooke> nothing here either, I just checked to see if the rx was running OK
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[23:41] <fsphil> yeah just verified with another receiver
[23:45] <SpacenearUS> New position from 03RSIST after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=RSIST
[23:46] <SpacenearUS> New vehicle on the map: 03N0230018 - 12https://tracker.habhub.org/#!qm=All&q=N0230018
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[23:49] <gonzo_> a 70cm repeater has just started, about 200yds from me
[23:49] <gonzo_> will be a good test of my system dynamic range
[23:50] <gonzo_> though, outputting at the low end of the band, so should be ok
[23:55] <Darkside> oh fun
[23:55] <Darkside> im putting a sonde receiver up at a repeater site
[23:55] <Darkside> luckily i have an interdigital filter to go on the front of the receier, and i have some antenna placement working in my favor
[23:56] <SpacenearUS> New vehicle on the map: 03N1820352 - 12https://tracker.habhub.org/#!qm=All&q=N1820352
[23:56] <fsphil> custom 404mhz antenna?
[23:57] <gonzo_> I had a prob with strong signals on my PA/LNA. I changed the lna to a newer mmic one, with a huge dynamic range. When strong local sigs came in, the o/p from the lna was enough to cause the PA to sense rf input and key
[23:58] <gonzo_> fixed now, but fun to discover
[23:59] <Darkside> fsphil: its just a 1/4 wave monopole
[00:00] --- Sun Jan 7 2018