highaltitude.log.20190205

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[05:23] <Lahti> M10 report from Lahti mobile https://aijaa.com/iWRPyb
[05:23] <Lahti> 2019-02-04T23:46:57Z,809 2 14261,1549324017,59.42966,24.76883,3452.3,-18.0,M1 0,404.000
[05:24] <Lahti> 2019-02-05T00:49:46Z,809 2 14261,1549327786,59.43350,25.97191,23572.7,-67.9,M 10,404.000
[05:24] <Lahti> 2019-02-05 01:47:37,054 INFO:Habitat - Uploaded sentence to Habitat successfully: $$RS_809 2 14261,1549324021,23:47:01,59.42966,24.77006,3473,1 7.0,-18.0,-1.0,M10 809 2 14261 404.000 MHz*3468
[05:24] <Lahti> 2019-02-05 02:50:09,545 INFO:Habitat - Uploaded sentence to Habitat successfully: $$RS_809 2 14261,1549327786,00:49:46,59.43350,25.97191,23572, 19.6,-67.9,-1.0,M10 809 2 14261 404.000 MHz*3E45
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[06:54] <Nilkki> Viproz: I tried last night Your other_testing branch, but Tallinn M10 sonde fly to the east so I did'n receive that at all. Tallinn is in limit for my antenna.
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[06:56] <Nilkki> Lahti will get that modification today and test it in next night. I belive that we will see tomorrow morning Tallinn M10 in sondehub map
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[08:46] <Lahti> new modification now running https://aijaa.com/xJXXgX
[09:14] <Viproz> Nilkki, it's now in the main testing branch
[09:17] <Viproz> Lahti, this doesn't seem to be the latest, it's 20190204-beta the current version I think
[09:19] <Viproz> Darkside, "APRS-IS (for display on sites such as aprs.fi" in the wiki, missing a ) ;)
[09:29] <Darkside> heh
[09:29] <Darkside> ill fix...
[09:49] <Lahti> Viproz: is this the right address ? git clone https://github.com/Viproz/radiosonde_auto_rx.git radiosonde_auto_rx_m10_viproz
[09:49] <SpacenearUS> New vehicle on the map: 03SP9UOB - 12https://tracker.habhub.org/#!qm=All&q=SP9UOB
[09:50] <Lahti> git clone https://github.com/Viproz/radiosonde_auto_rx.git radiosonde_auto_rx_m10_viproz
[09:50] <Viproz> git clone --branch testing https://github.com/projecthorus/radiosonde_auto_rx.git
[09:51] <Viproz> It's now all in the main repository, donw't need to clone my fork :)
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[09:52] <Nilkki> Viproz: OK, we will test that main repository
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[10:52] <SpacenearUS> New vehicle on the map: 03WB4ELK-14 - 12https://tracker.habhub.org/#!qm=All&q=WB4ELK-14
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[11:19] <Darkside> Viproz: or you can just git pull, and then git checkout testing
[11:19] <Darkside> (and rebuild the decoders
[11:19] <Darkside> )
[11:22] <Viproz> I really need to get more familiar with git, I don't really understand the uses of pull vs checkout and things like that
[11:27] <Darkside> its definitely worth learning
[11:27] <Darkside> its very powerful
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[11:32] <Viproz> On http://predict.habhub.org/ does someone know how it uses the descent rate ? Since it's really not constant I don't really understand
[11:34] <Viproz> I'm guessing they use some kind of curve but the default 5m/s is quite low I think so maybe it's the terminal velocity at sea level ?
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[11:40] <daveake> 5m/s is a typical landing speed yes
[11:41] <daveake> It'll use the standard atmospheric model to deduce the curve from current altitude and descent rate
[11:45] <Viproz> daveake, ok thx, so for this one https://radiosondy.info/sonde_archive.php?sondenumber=ME779362 where I only have the speed at 1km altitude should I match the curve to a free falling object with air drag to get the speed at 0m asl or I should just use 7m/s as final velocity ?
[11:45] <daveake> Well it won't be much different between 1km and 0m
[11:46] <daveake> Works out at 6.73
[11:48] <Viproz> oh you have a simple formula ? I had been using MATLAB to solve a differential equation and optimize the parameter to match my curve
[11:48] <daveake> Yes. I wrote a little tool to plot the curve and predict the landing speed and time till landing
[11:48] <daveake> https://usercontent.irccloud-cdn.com/file/GZo1vT6B/image.png
[11:49] <daveake> I use it in my landing prediction code; this was the first step
[11:50] <Viproz> Yeah I've done about the same on MATLAB then, I was predicting the landing position using the data collected when going up expecting the way back down would have the same winds
[11:51] <Viproz> works quite well actually if you recieve the RS early enough
[11:51] <daveake> Yeas, same. My Pi tracker does that stuff.
[11:52] <daveake> How well it works vs the habhub one depends of course on how changeable the winds are (over time and distance)
[11:53] <daveake> I do think the habhub one has a bug somewhere as it tends to over-estimate the horizontal distance the parachute will travel.
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[12:05] <Darkside> i've started using the 0.25 degree, 1 hr model in chasemapper
[12:05] <Darkside> as its much better when you have wiind changes and the like moving through (like it seems we will have for our launch this weekend...)
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[12:08] <Lahti> Viproz: Now I knew it, waiting for the night https://aijaa.com/YuQjGE
[12:22] <Nilkki> Hih, glad to see that I am not only one who wants to calculate and predict landing position
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[12:24] <Darkside> Nilkki: have you seen chasemapper?
[12:25] <Darkside> it does this (using weather models)
[12:25] <Darkside> (as does the online tracker of course)
[12:25] <Darkside> sure using the ascent data is a way to do it too, but you still need data above the current balloon altitude to be able to predict a full flight path, so you still need the models...
[12:26] <Nilkki> Looks that I need to look at that chasemapper tonight
[12:27] <Darkside> its a bit of work to get it going, but if you're got auto_rx going you should be OK...
[12:27] <Darkside> anyway, i need to go to bed
[12:28] <Darkside> gnight
[12:45] <SpacenearUS> New vehicle on the map: 03RTLS1 - 12https://tracker.habhub.org/#!qm=All&q=RTLS1
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[13:06] <Viproz> Darkside, https://tracker.sondehub.org/?sondehub=1#!mt=osm&mz=10&qm=1_hour&f=RS_M10-T-803-2-10728&q=RS_*;*chase looks likr it's working well
[13:06] <Viproz> Lahti, looking good !
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[14:03] <Viproz> https://radiosondy.info/sonde.php?sondenumber=ME775266 this one is already at -3m/s at 3km altitude, interesting how different they are from day to day
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[14:39] <Lahti> wow two M10
[14:44] <Lahti> could sondehub make a change to the page? if you click on a ball on the map, would that ball information window open in the left menu?
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[14:50] <chris_99> i was wondering, does anyone use thethingsnetwork, for balloon tracking, if that's possible?
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[14:57] <Viproz> Lahti, Yeah it looks like one had something messed up so they sent another one on their backup frequency
[14:59] <Phil_M0DNY> chris_99: https://www.thethingsnetwork.org/article/ground-breaking-world-record-lorawan-packet-received-at-702-km-436-miles-distance
[15:00] <chris_99> cheers thanks
[15:00] Nick change: Phil_M0DNY -> craag
[15:01] <chris_99> that's pretty awesome, so if a balloon went from the UK to mainland europe you could track it with that then
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[15:09] <chris_99> i got that book you suggested btw, today :)
[15:15] <craag> :)
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[15:29] <Nick_B5> any info on RTLS1?
[15:31] <craag> Nick_B5: It'll be a test accidentally uploaded by daveake
[15:32] <Nick_B5> ah ok thanks :)
[15:32] <craag> (ie. it's sitting on his desk with a fake gps input)
[15:32] <daveake> heh :)
[15:32] <daveake> Not accidentally ... ding some habhub xtraction stuff
[15:32] <craag> one of these days I'll be standing down all your listeners during the flight daveake ;)
[15:32] <daveake> also learning to type
[15:33] <daveake> I might need that :)
[15:36] <daveake> I did use to call it NOTAFLIGHT but that didn't stop some from asking :P
[15:37] <fsphil> need a DONTASK
[15:38] <fsphil> hmm, I can't not see that as DON TASK
[15:38] <fsphil> the rubbish version of DAN DARE
[15:43] <daveake> heh
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[16:52] <chris_99> has anyone seen any longish (3m or so) ready made sma -- n cables out of interest
[16:58] <daveake> https://www.ebay.co.uk/itm/Low-loss-cable-3m-long-H155-BELDEN-N-male-to-SMA-male-lorawan-ADS-B-lowloss/303027419118?hash=item468dd777ee:g:yrwAAOSwdzRbxc3w:rk:1:pf:1&frcectupt=true
[17:03] <daveake> I'd recommend though going N to N, and having a small N-SMA cable to adapt, using thin (e.g. RG174) cable. That way the N-N cable can be thick and low-loss, and it avoids putting a lot of force on the SMA plug and socket.
[17:14] <chris_99> ah that's a good idea, i hadn't thought of that
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[17:28] <YO3ICT> Is anybody still using the Si446x with Atmega? Need some help getting the temp read.
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[17:48] <SpacenearUS> New position from 03HA6SZT after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=HA6SZT
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[18:29] Nick change: Viproz_ -> Viproz
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[20:15] <TimMc_> Did someone get RS_N4230231?
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[22:19] <Viproz> Darkside, I'm haveing some issue with Chasemapper, you're here ?
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[22:25] <TimMc_> I found RS_N4230231
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[23:06] <Robert_mja> Good evening, is somebody here who can explain how the GFS weather model used for the tracker.habhub page is updated during the day? It's stil showing the 06 utc model at the moment...
[23:20] <daveake> Currently broken but being worked on see convo in #habhub
[23:28] <Viproz> Darkside, found the issue, need to add a s for https in the get wind script
[23:28] <Viproz> daveake, is the issue not being able to download the data ?
[23:29] <daveake> Apparently. The importer needs to use Https note not http. Just passing on what I read; I don't have anything to do with it.
[23:31] <Viproz> I guess they enforced the new rule today, on their website "Beginning by December 06, 2018, all HTTPS URLs will be available alongside HTTP. Starting as early as December 11, 2018, NCEP will begin to redirect HTTP URLs to HTTPS and disable HTTP access."
[23:31] <Viproz> it's a pretty simple fix though
[23:32] <daveake> Yup
[23:34] <mwheeler> I'm hoping BOM launch an ozonesonde today
[23:35] <mwheeler> If they do I'll try to fetch it
[23:35] <Viproz> Darkside, for when you're back, you need to change this line here https://github.com/darksidelemm/cusf_predictor_wrapper/blob/master/apps/get_wind_data.py#L24 to use https then it works again
[23:37] <Darkside> ooh
[23:37] <Darkside> did they drop http support
[23:37] <Darkside> ok
[23:37] <Viproz> yep, just today apparently
[23:37] <Darkside> thanks viproz
[23:37] <Darkside> ill have to fix that in a fee places
[23:38] <Darkside> few
[23:38] <Viproz> no worries, just as I was trying out ChaseMapper :D
[23:38] <Darkside> cool
[23:38] <Darkside> ok gtg
[23:39] <Robert_mja> Thanks for fixing the problem!!
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[23:57] Robert_mja (506517ea@gateway/web/freenode/ip.80.101.23.234) left irc: Quit: Page closed
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[00:00] --- Wed Feb 6 2019