highaltitude.log.20180817

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[00:21] <SpacenearUS> New vehicle on the map: 03RS_N2330392 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2330392
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[00:46] <SpacenearUS> New vehicle on the map: 03RS_N1353073 - 12https://tracker.habhub.org/#!qm=All&q=RS_N1353073
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[03:18] <SpacenearUS> New vehicle on the map: 03RS_DFM09-18020875 - 12https://tracker.habhub.org/#!qm=All&q=RS_DFM09-18020875
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[04:16] <SpacenearUS> New vehicle on the map: 03RS_P3150285 - 12https://tracker.habhub.org/#!qm=All&q=RS_P3150285
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[04:34] <SpacenearUS> New vehicle on the map: 03RS_P3110860 - 12https://tracker.habhub.org/#!qm=All&q=RS_P3110860
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[04:48] <SpacenearUS> New vehicle on the map: 03RS_N2120388 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2120388
[04:53] <SpacenearUS> New vehicle on the map: 03RS_P1030382 - 12https://tracker.habhub.org/#!qm=All&q=RS_P1030382
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[05:17] <SpacenearUS> New vehicle on the map: 03RS_P1620283 - 12https://tracker.habhub.org/#!qm=All&q=RS_P1620283
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[05:45] <SpacenearUS> New vehicle on the map: 03RS_N2310602 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2310602
[05:47] <SpacenearUS> New vehicle on the map: 03RS_N4350047 - 12https://tracker.habhub.org/#!qm=All&q=RS_N4350047
[05:48] <SpacenearUS> New vehicle on the map: 03RS_N0840261 - 12https://tracker.habhub.org/#!qm=All&q=RS_N0840261
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[07:18] <ewanp> craag^ Very Nice. Do you have any photos?
[07:19] <ewanp> I've wanted to build something similar myself so some questions:
[07:20] <ewanp> Is the POE for the Pi and HabAmp, if so how do you break out the power for the HabAmp?
[07:21] <ewanp> What are you using as the RF splitter after the HabAmp?
[07:22] <ewanp> Is WebSDR running on the Pi3 itself or another server?
[07:25] michemto (d5a805aa@gateway/web/freenode/ip.213.168.5.170) joined #highaltitude.
[07:27] <michemto> morning! A question regarding to the habhub database - is it possible to upload multiple telemetry rows manually in order to have correct flightpath in the database? Due to unknown error there wasn't any transmission during the flight but PITS has whole telemetry on the SD, so that's why I'm asking.
[07:45] <SpacenearUS> New vehicle on the map: 03RS_N2040398 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2040398
[07:50] <craag> ewanp: https://photos.app.goo.gl/XoLJvE6sjJvbRjmJ8
[07:51] <craag> I was using a mini-usb lead from the rpi for habamp power, but that rtlsdr has an always-on bias tee so I'm now using that, with a DC-block in front of the lora rx
[07:52] <daveake> There's an official pi poe hat now, btw
[07:53] <craag> yep, still more expensive than these splitters off amazon (although these are only 100Mb)
[07:54] <craag> RF splitter is a satellite-tv splitter, anything but the cheapest tend to be ok, they're what we use on the farnham websdr too
[07:54] <craag> does mean you have everything->f-type->everything adaptors everywhere though
[08:02] <michemto> So what I'm looking for is something similar but with possibility to upload .csv for example http://habitat.habhub.org/manual_upload/
[08:03] <craag> websdr also running on the rpi3, segfaulted with 2MHz wide, seems to work ok with 1MHz wide, cpu load with 1x user: http://i.imgur.com/6R6ujXy.png
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[08:35] <WillDuckworth> craag - does splitting the signal weaken it for both the pi and the rtl-sdr? I like the setup and think i'll alter my poe pi lora box to do the same. What type of splitter is it?
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[08:38] <SA6BSS-Mike> the spltter weakens it by 3db to each rx but the amp more then enough weight up for that
[08:39] <SA6BSS-Mike> im using this one but as craag sais moste but the cheapest works well
[08:39] <SA6BSS-Mike> https://www.ebay.co.uk/itm/Triax-1-Way-CATV-Splitter-2-7-dB-5-2400-MHz-1-Output-SAT-IF-MATV-52400MHz/372261459519?epid=24017259595&hash=item56ac83163f
[08:39] <SA6BSS-Mike> ah, not that one, hang on....
[08:40] <SA6BSS-Mike> https://www.ebay.co.uk/itm/Triax-2-Way-F-Type-5-2400-Mhz-Splitter-SCS-2-349802-Coax-Co-axial-Aerial-TV/182846017544?epid=2255452069&hash=item2a9278d008:g:k10AAOSwQcJZ605O
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[08:44] <craag> WillDuckworth: Yes as SA6BSS says it'll weaken the signal by at least 3dB, depending on the internal design of the splitter it may be more.
[08:45] <SpacenearUS> New position from 03BSS17 after 0319 days silence - 12https://tracker.habhub.org/#!qm=All&q=BSS17
[08:45] <craag> However that's why the habamp is in front, as then this'll just subtract from the gain of the LNA in the habamp
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[08:49] <WillDuckworth> cheers guys
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[08:50] <SA6BSS-Mike> howdy
[08:51] <craag> This is the one I'm using: https://www.amazon.co.uk/gp/product/B000NHBNII
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[08:55] <daveake> michemto: You can replay the flight through pits
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[09:11] <michemto> daveake: How?
[09:12] <daveake> Get the gps.txt file, edit it to remove everything from before/after the flight, then save it back to the same folder as (for example) myflight.txt
[09:12] <daveake> Then edit pisky.txt and add gps_source=myflight.txt
[09:13] <daveake> Restart the tracker and it'll run through the stored NMEA to replay the flight
[09:13] <daveake> So .... how come you got no telemetry during the flight ?
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[09:30] <SpacenearUS> New vehicle on the map: 03RS_N0740117 - 12https://tracker.habhub.org/#!qm=All&q=RS_N0740117
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[10:18] <PE2BZ> daveake good morning. Would you consider creating a telemetry folder on sd card also and write the telemetry.txt in a folder with the same name structure as you do for the full and lora images ?
[10:19] <daveake> why ?
[10:20] <PE2BZ> Somehow I ended up with 450000 lines of telemetry :-) People keep sending back my camera payload ....
[10:20] <PE2BZ> and the gps time does not show the date in the txt file
[10:21] <PE2BZ> and with 32 gb SD card there was no actual need to clean up
[10:25] <daveake> Just delete the file before flight
[10:32] <PE2BZ> Would be a good solution.... Still trying to convince you ;-) Could you write the date in the telemetry file when the Pi starts up ?
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[10:36] <daveake> The Pi doesn't know the date when it starts up - remember it's sat in a box in a field it has no internet
[10:37] <daveake> It doesn't know till later when the GPS gets a lock.
[10:37] <daveake> I'm reluctant to add anything to the telemetry file, as people might be using it for whatever purpose
[10:38] <PE2BZ> Understood completely. I will become a good system adminstrator sometime ;-)
[10:49] <SpacenearUS> New vehicle on the map: 03RS_N2040427 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2040427
[10:54] <SpacenearUS> New vehicle on the map: 03RS_P0950806 - 12https://tracker.habhub.org/#!qm=All&q=RS_P0950806
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[11:06] <SpacenearUS> New position from 03IV3SRD-11 after 039 hours silence - 12https://tracker.habhub.org/#!qm=All&q=IV3SRD-11
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[11:17] <SpacenearUS> New vehicle on the map: 03RS_P1040712 - 12https://tracker.habhub.org/#!qm=All&q=RS_P1040712
[11:18] <SpacenearUS> New vehicle on the map: 03RS_N3910637 - 12https://tracker.habhub.org/#!qm=All&q=RS_N3910637
[11:19] <SpacenearUS> New vehicle on the map: 03RS_N3820234 - 12https://tracker.habhub.org/#!qm=All&q=RS_N3820234
[11:26] <SpacenearUS> New vehicle on the map: 03RS_N4010708 - 12https://tracker.habhub.org/#!qm=All&q=RS_N4010708
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[11:32] <SpacenearUS> New vehicle on the map: 03RS_N4510095 - 12https://tracker.habhub.org/#!qm=All&q=RS_N4510095
[11:33] <SpacenearUS> New vehicle on the map: 03RS_L2823635 - 12https://tracker.habhub.org/#!qm=All&q=RS_L2823635
[11:40] <SpacenearUS> New vehicle on the map: 03RS_N4410566 - 12https://tracker.habhub.org/#!qm=All&q=RS_N4410566
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[11:43] <SpacenearUS> New vehicle on the map: 03ALMIGHTYGOD_chase - 12https://tracker.habhub.org/#!qm=All&q=ALMIGHTYGOD_chase
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[11:46] <SpacenearUS> New vehicle on the map: 03RS_P0940286 - 12https://tracker.habhub.org/#!qm=All&q=RS_P0940286
[11:54] <SpacenearUS> New position from 03PI0-BZ after 033 days silence - 12https://tracker.habhub.org/#!qm=All&q=PI0-BZ
[12:00] <SpacenearUS> New vehicle on the map: 03RS_P1720146 - 12https://tracker.habhub.org/#!qm=All&q=RS_P1720146
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[12:11] <michemto> daveake: Not sure at all what actually happened during the flight. Pi logfiles didn't include any anomalies at the time we lost the data transmission. Only the base frequency was transmitted (I hope I got the term right in ENG). It happened at ~1000m. We relied on the predictions and at 9000m there was signal loss and after that data transmission was restored and we successfully got the landing location... anyway telemetry doe
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[12:12] <daveake> Is the telemetry continuous in the telemetry.txt file ?
[12:12] <michemto> yup
[12:13] <daveake> Something amiss with your receiver ?
[12:15] <michemto> oh no :) 4 different stations were successfully receiving, including 2 stations from Estonian Space Center in T├Áravere. Guys over there have full recording of the station as well - there were some anomalies.
[12:15] <michemto> I'll get back here after work to translate some Estonian discussion.
[12:16] <michemto> Actually, Dave... Since I do feel that I'm not competent enough, maybe it would be best to forward pictures they've shared with me as well... may I ask for e-mail?
[12:16] <daveake> Well if the telemetry.txt shows the sentences, with no gaps (e.g. due to rebooting) then the software was sending.
[12:17] <daveake> I don't need pictures but you could send the gps.txt and telemetry.txt files to me at dave@sccs.co.uk
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[12:46] <AndyEsser> https://imgur.com/a/Kp8Goas
[12:46] <AndyEsser> o0o0
[12:52] <bertrik> what is it?
[12:53] <AndyEsser> output from my FFT program - analysing 1 second of 1500Hz tone
[12:54] <chris_99> cool, what are you making?
[12:54] <AndyEsser> playing around with RTTY mod/demod
[12:54] <AndyEsser> got a test program written that'll do 2FSK or 4FSK generation
[12:55] <AndyEsser> with optional noise
[12:55] <AndyEsser> ready for me to test FSK demodulation into RTTY :D
[12:55] <bertrik> generation is always sooo much more easier than detection
[12:55] <AndyEsser> yea :(
[12:55] <bertrik> *easy
[12:55] <chris_99> cool, is this decoding from a sound card then
[12:56] <AndyEsser> chris_99: for simplicity the test application just writes the samples to a file on disk
[12:56] <AndyEsser> then the demod program reads that file
[12:56] <AndyEsser> eventually it'll work on streams of some sort (ie sound card stuff)
[12:57] <chris_99> nice, good luck! I've just been playing a little with FFTs recently on my PDM microphone, which highlights how naff my moving avg. filter is
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[12:59] <AndyEsser> chris_99: cheer
[12:59] <AndyEsser> cheers*
[12:59] <AndyEsser> want to get to a point where I can use it to decode HAB telemetry :D
[12:59] <chris_99> cool! are you using python btw, or..?
[12:59] <SpacenearUS> New vehicle on the map: 03RS_N2330360 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2330360
[13:00] <AndyEsser> chris_99: Golang :D
[13:00] <chris_99> oh nice
[13:00] <AndyEsser> my original plan was to use C++ but Golang seems a nicer fit now that I've been working with it for a few years
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[13:02] <chris_99> does golang have numpy/matplotlib/scipy type libraries then i guess?
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[13:07] <AndyEsser> chris_99: not really
[13:07] <AndyEsser> the presentation of the data is the tricky bit
[13:08] <chris_99> ahh
[13:08] <AndyEsser> that graph I showed there was just the data plotted in Excel in order for me to validate it
[13:08] <chris_99> ah, gotcha. That's one reason i do like python, the amount of libraries it has
[13:08] <bertrik> those PDM microphones are fascinating, I'd like to work with those some time, possibly try to get ultrasonic performance out of them
[13:09] <AndyEsser> for simplicity I might do all the heavy lifting/processing in Golang - and just make a webpage that interacts with it for showing data etc
[13:09] <chris_99> bertrik: that's exactly what i'm planning on using it
[13:09] <chris_99> for
[13:10] <chris_99> ah yeah, and use something else for the graphs you mean?
[13:10] <bertrik> have to go now, maybe talk later about it chris_99
[13:10] <AndyEsser> chris_99: yea exactly
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[13:13] <chris_99> bertrik: sure, give me a shout when you're back, if you want
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[13:48] <SpacenearUS> New vehicle on the map: 03SGTDK - 12https://tracker.habhub.org/#!qm=All&q=SGTDK
[13:54] <AndyEsser> https://imgur.com/a/KdngRwS
[13:55] <AndyEsser> well converting the 1's and 0's from my FFT frequency results hasn't quite given the results I'd expected :P
[13:56] <chris_99> heh
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[14:22] <AndyEsser> grr - why won't you work :(
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[14:26] <SpacenearUS> New vehicle on the map: 03N7GAS - 12https://tracker.habhub.org/#!qm=All&q=N7GAS
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[14:34] <chris_99> you're trying to pass the data from Go, now to something else?
[14:35] <AndyEsser> nah - just trying to conver the output FFT data into 1's and 0's representing RTTY symbols
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[14:35] <chris_99> oh gotcha
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[14:37] <AndyEsser> I know that I have a crystal clean sample, and exactly how it was sampled etc - so should just be a case of FFT at the same sample rate - determining whether the peak is at upper or lower tone frequencies - then outputting a 1 or 0 symbol
[14:37] <AndyEsser> ignoring the start and stop bits, the middle 8 bits make up my RTTY character
[14:37] <AndyEsser> in theory
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[14:40] <chris_99> hmm, so you're looking for a certain 8 bit character in the stream at the moment? does rtty have a preamble out of interest to align bits
[14:45] <AndyEsser> there are start and stop bits to help alignment
[14:45] <AndyEsser> but as said above, because I know that things are perfectly aligned in the test sample etc - I can ignore those for the moment
[14:45] <chris_99> ah sorry, gotcha
[14:45] <AndyEsser> once I have the character decoding properly - I can make it search properly for a change in tones to signify a start, etc
[14:46] <AndyEsser> it would appear that I should be sending 253 symbols, but only receiving 218 - which means I think the way golang is encoding the binary characters it's stripping leading zeroes, rather than using fixed width byte buffers
[14:59] <SpacenearUS> New vehicle on the map: 03PIAVR - 12https://tracker.habhub.org/#!qm=All&q=PIAVR
[15:07] <SpacenearUS> New vehicle on the map: 03KG5JUT-2 - 12https://tracker.habhub.org/#!qm=All&q=KG5JUT-2
[15:07] <SpacenearUS> New vehicle on the map: 03KG5JUT-3 - 12https://tracker.habhub.org/#!qm=All&q=KG5JUT-3
[15:20] <SpeedEvil> https://mobile.twitter.com/NASA_Wallops/status/1030473755846471680
[15:20] <SpeedEvil> Up, up and away we go! Inflation is now complete and the Big 60  NASA's largest scientific balloon to date  has lifted off for the first time since 2002. Watch live views from the balloon's gondola: ustream.tv/channel/nasa-e&
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[15:42] <AndyEsser> https://imgur.com/a/prDWfoq
[15:42] <AndyEsser> interesting DIY waterfall in browser
[15:42] <AndyEsser> :O
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[16:00] <SpacenearUS> New position from 03DRAGINO after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=DRAGINO
[16:03] <SpacenearUS> New vehicle on the map: 03PIAVR2 - 12https://tracker.habhub.org/#!qm=All&q=PIAVR2
[16:06] snu (518be5c5@gateway/web/freenode/ip.81.139.229.197) joined #highaltitude.
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[16:11] <SpacenearUS> New vehicle on the map: 03N7rxe_chase - 12https://tracker.habhub.org/#!qm=All&q=N7rxe_chase
[16:14] <SpacenearUS> New vehicle on the map: 03pumelele_chase - 12https://tracker.habhub.org/#!qm=All&q=pumelele_chase
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[17:08] <jacobtb> I can't get on to habhub channel to get a flight document approved
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[17:37] <SpacenearUS> New vehicle on the map: 03RS_N4410565 - 12https://tracker.habhub.org/#!qm=All&q=RS_N4410565
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[17:48] <SpacenearUS> New vehicle on the map: 03RS_N2310606 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2310606
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[17:52] <AndyEsser> https://imgur.com/a/UhAnDV1
[17:52] <AndyEsser> that looks better :D
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[18:20] <fsphil> looks like the spammers are still spammin'
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[18:39] <SpacenearUS> New vehicle on the map: 03RS_P0650203 - 12https://tracker.habhub.org/#!qm=All&q=RS_P0650203
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[19:59] <SpacenearUS> New vehicle on the map: 03RS_M2933232 - 12https://tracker.habhub.org/#!qm=All&q=RS_M2933232
[20:04] <SpacenearUS> New vehicle on the map: 03KE0SEH-11 - 12https://tracker.habhub.org/#!qm=All&q=KE0SEH-11
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[20:17] <SpacenearUS> New vehicle on the map: 03N0AGI-1 - 12https://tracker.habhub.org/#!qm=All&q=N0AGI-1
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[21:17] Nick change: SA6BSS-Mike|2 -> SA6BSS-Mike
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[22:22] <SpacenearUS> New vehicle on the map: 03RS_DFM09-17028126 - 12https://tracker.habhub.org/#!qm=All&q=RS_DFM09-17028126
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[23:18] <SpacenearUS> New vehicle on the map: 03RS_N1730567 - 12https://tracker.habhub.org/#!qm=All&q=RS_N1730567
[23:22] <SpacenearUS> New vehicle on the map: 03RS_P1040755 - 12https://tracker.habhub.org/#!qm=All&q=RS_P1040755
[23:25] <SpacenearUS> New vehicle on the map: 03RS_P1830120 - 12https://tracker.habhub.org/#!qm=All&q=RS_P1830120
[23:26] <SpacenearUS> New vehicle on the map: 03RS_N3820012 - 12https://tracker.habhub.org/#!qm=All&q=RS_N3820012
[23:27] <SpacenearUS> New vehicle on the map: 03RS_P2620473 - 12https://tracker.habhub.org/#!qm=All&q=RS_P2620473
[23:27] <SpacenearUS> New vehicle on the map: 03RS_N3810488 - 12https://tracker.habhub.org/#!qm=All&q=RS_N3810488
[23:30] <SpacenearUS> New vehicle on the map: 03RS_N4020258 - 12https://tracker.habhub.org/#!qm=All&q=RS_N4020258
[23:33] <SpacenearUS> New vehicle on the map: 03RS_L2743277 - 12https://tracker.habhub.org/#!qm=All&q=RS_L2743277
[23:39] <SpacenearUS> New vehicle on the map: 03RS_N2430359 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2430359
[23:43] <SpacenearUS> New vehicle on the map: 03RS_N4410522 - 12https://tracker.habhub.org/#!qm=All&q=RS_N4410522
[23:51] <SpacenearUS> New vehicle on the map: 03RS_P1620150 - 12https://tracker.habhub.org/#!qm=All&q=RS_P1620150
[00:00] --- Sat Aug 18 2018