highaltitude.log.20170220

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[04:30] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12https://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
[05:01] <SpacenearUS> New position from 03HIRFW-6 after 0317 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HIRFW-6
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[11:36] <SpacenearUS> New position from 03M10WX-11 after 033 days silence - 12https://tracker.habhub.org/#!qm=All&q=M10WX-11
[11:45] <SpacenearUS> New position from 03RSIST after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=RSIST
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[12:15] <AntonyKU> Hi guys, was wondering where you source your weather balloons?
[12:16] <AndyEsser> http://randomaerospace.com/Random_Aerospace/Welcome.html
[12:16] <SpacenearUS> New vehicle on the map: 03BK-Ostvest3 - 12https://tracker.habhub.org/#!qm=All&q=BK-Ostvest3
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[12:19] <AntonyKU> thanks a bunch!!! :)
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[13:37] <Laurenceb_> http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-tools/stm32-mcu-eval-tools/stm32-mcu-discovery-kits/b-l072z-lrwan1.html
[13:48] <fsphil> huh, that's basically the little datalogger board I made. handy
[13:52] <fsphil> not on farnell yet
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[14:27] <aadamson> http://wireless.murata.com/eng/products/rf-modules-1/lpwa/type-abz.html
[14:27] <aadamson> if you just want the module (stm32L0/sx1276)
[14:29] <aadamson> but only 800/900mhz available
[14:36] <prog> hmmm. murata can't be bad
[14:42] <SA6BSS-Mike> prog: whn is release of the new airspy hf+ ?
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[14:46] <fsphil> what's that?
[14:47] <SA6BSS-Mike> Preliminary specs: RX range: 0 .. 30 MHz (HF) and 60 - 270 MHz (+) Architecture: Hybrid (Direct conversion + DDC) using 2 x sigma delta ADC's @ 36MSPS Front end: Tracking Filters (all bands), High Dynamic Range LNA's and Mixers AGC: Smart AGC controlled by the DSP DSP: CIC, CFIR and a final (programmable) channel FIR - 18bit resolution Final bandwidth/resolution after DDC: 18bit @ 600kHz - Scale
[14:47] <SA6BSS-Mike> Target price < $200
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[14:49] <fsphil> cool
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[15:31] <kc2uez> so the teacher I help with the launches would like to stream live telemetry data to a site and even if possible a picture. So far we have used aprs, but is not as fluid as he likes. i was looking for options and i was thinking maybe an iridium modem, some custom afsk modem or lora. lora is way cheaper, but what do you guys with more experience use?
[15:37] <craag> lora + ssdv is the most commonly used here
[15:37] <Geoff-G8DHE-M> See the wiki for the UKHAS telemetry and SSDV options, it plots directly and shows images on the server, best used with several tracking stations.
[15:38] <adamgreig> also just rtty and ssdv
[15:38] <craag> for educational flights there's the pi-in-the-sky kit available
[15:39] <Geoff-G8DHE-M> and if you want arger faster pictures then LoRa options are possible
[15:41] <Geoff-G8DHE-M> https://ukhas.org.uk/guides:lora_tracking_guide
[15:42] <Geoff-G8DHE-M> and https://ukhas.org.uk/frontpage:guides
[15:46] <kc2uez> thanks, yes I was leaning towards lora, but our launches do cover over 150miles radius from launch to landing and maybe in the 100k ft altitude
[15:46] <kc2uez> but will read up on that
[15:47] <adamgreig> that's pretty standard sorts of ranges
[15:47] <adamgreig> no reason to expect lora wouldn't work fine. honestly it should be better than aprs, except that you don't have a network of lora receivers around the country
[15:49] <Geoff-G8DHE-M> You could try daveake approach with "repeaters" either as seperate balloons or maybe on a a high point ? http://www.daveakerman.com/?p=1850
[15:51] <craag> 100000ft
[15:51] <SIbot> In real units: 100000 ft = 30.5 km
[15:51] <craag> easy :)
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[16:08] <DoYouKnow> hi
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[16:09] <DoYouKnow> anyone know about that 978 MHz ads-b-like frequency??
[16:09] <DoYouKnow> what's that about?
[16:09] <DoYouKnow> so mode s and c or something?
[16:09] <DoYouKnow> used on drones?
[16:10] <Geoff-G8DHE-M> Its a mode for aircraft transponders not small drones they don't carry ADS-B
[16:10] <DoYouKnow> ok
[16:10] <DoYouKnow> what do drones use then?
[16:11] <DoYouKnow> for collision avoidance?
[16:11] <Geoff-G8DHE-M> what sort of drones
[16:11] <DoYouKnow> like the RQ-series military drones
[16:11] <Geoff-G8DHE-M> Go ask them.
[16:11] <DoYouKnow> nah, they must use ads-b
[16:11] <russss> presumably they have military transponders on them
[16:11] <DoYouKnow> yeah, military ads-b
[16:11] <DoYouKnow> I've seen DoD jets on the ads-b
[16:12] <DoYouKnow> but I know that 978 MHz is a known drone frequency
[16:12] <DoYouKnow> at least pretty sure
[16:12] <DoYouKnow> just not sure what type of drones
[16:13] <russss> as I understand it, 978MHz is just another frequency for ADS-B in the USA for general aviation
[16:14] <DoYouKnow> yeah, civillian aviation
[16:14] <DoYouKnow> right?
[16:14] <Upu> UAT
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[16:14] <DoYouKnow> Unmanned Aerial Transponder?
[16:15] <fsphil> universal access transeiver
[16:15] <fsphil> spelling
[16:15] <daveake> Upu's Awesome Tracker
[16:16] <Upu> that too
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[16:16] <DoYouKnow> yeah, so I was wondering about that... I probably should lookk a 978
[16:16] <DoYouKnow> I wonder if prog's adsbspy will tune there
[16:16] <Upu> ping DutchSpace - hi @uputronics
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[16:16] <russss> AFAIK it's basically used as a cheaper alternative to a full-on ADS-B system for general aviation
[16:16] <DoYouKnow> but it probably won't support mode 3
[16:16] <russss> which is quite a good idea
[16:17] <DutchSpace> Hi
[16:17] <Upu> here if you need me :)
[16:17] <DoYouKnow> oh, so the military drones probably use 1090 still, but the police drones and other small drones may use 978
[16:17] <DoYouKnow> interesting
[16:17] <russss> other small drones probably don't have ADS-B at all. There is no requirement for it.
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[16:18] <DutchSpace> <- just waiting for new hardware and Leo's firmware magic ;-)
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[16:18] <DoYouKnow> ok
[16:19] <DoYouKnow> but they are going on
[16:19] <DoYouKnow> *going to
[16:19] <fsphil> going to require ads-b?
[16:19] <fsphil> that seems unlikely
[16:19] <russss> I wouldn't hold your breath. I don't think it's even a requirement for commercial airliners to carry ADS-B in the USA yet.
[16:20] <russss> plus, ADS-B equipment costs and weighs more than a decent drone.
[16:21] <fsphil> I doubt any old person could transmit on those adb-b frequencies anyway
[16:22] <russss> I understand the type-approval for 1090MHz is quite complex, which is presumably why the US is running a less-heavyweight system on 978
[16:22] <russss> plus, there are capacity concerns
[16:22] <DutchSpace> ADS-B will be mandatory in the US in 2020 -> https://www.faa.gov/nextgen/equipadsb/airspace/requirements/
[16:23] <russss> DutchSpace: oh, that's more comprehensive than when I last looked
[16:26] <russss> the diagram on that page is hilarious
[16:31] <SpacenearUS> New position from 03PYSKY after 0313 days silence - 12https://tracker.habhub.org/#!qm=All&q=PYSKY
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[16:52] <daveake> FWIW ebuyer have a £40 win10 tablet that happily runs dl-fldigi fed from a radio to its audio jack
[16:54] <fsphil> is it stuck on windows?
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[16:55] <TonyKu> where do you purchase your weather balloons? in the UK
[16:56] <fsphil> mostly from http://randomaerospace.com/
[16:57] <TonyKu> yeah, that's the website i'm looking at, it's just they don't seem to give a lot of specs info.
[16:58] <craag> what specs are you wanting?
[17:01] <TonyKu> my team wants a balloon which carries about 500g, goes 30km altitude using helium.
[17:01] <craag> then you want to use: http://habhub.org/calc/
[17:01] <craag> aiming for 5m/s ascent rate is normal
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[17:06] <Dan_KU> Cheers for the help, trying to do this for the first time for a little project and have a tonne of questions. Not sure how far this things gonna go of we launch it from, say Cambridge. Ive seen on habhub some of them end up in Germany??
[17:08] <fsphil> that takes effort :)
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[17:09] <fsphil> a 5m/s ascent makes long distance flights unlikely
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[17:09] <fsphil> balloons only tend to float if they rise slowly
[17:09] <mfa298> Dan_KU: predict.habhub.org can help you get an idea of where a balloon will go, but it will vary each ady depending on the winds
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[17:12] <Dan_KU> Thanks, ill have a little play around with it! Was also unsure on what kind of reciever antenna to use with a funcube dongle
[17:14] <Dan_KU> Just that it has to be in the right frequency range
[17:16] <mfa298> part of deciding the right antenna depends a bit on where it's being used. magmount is good on the car, a larger vertical antenna is good on a house.
[17:17] <mfa298> trying to track other peoples flights from home can help you test out your setup and see how well it does.
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[17:22] <daveake> fsphil No idea. I actually wanted (yeah, I know) a W10 tablet to play with / test stuff on
[17:22] <daveake> Frankly, better than I was expecting (I expected dire, as it's a) W10 and b) cheap with only 1GB RAM
[17:24] <mfa298> I got one of the Linx 7 tablets a couple of years ago when they were on offer for black friday and their not bad.
[17:24] <mfa298> I think I even got sdr# and dl-fldigi going on it together
[17:25] <mfa298> only downside is with the dongle plugged in I can't charge it (might be possible to find some suitable cable for that)
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[17:48] <daveake> Works with an Airspy too, in 2.5MSPS mode
[17:49] <daveake> And yeah, I heard about the charging issue. Dunno if that can be fixed.
[17:50] <daveake> https://pbs.twimg.com/media/C5IFaoKWMAAogki.jpg:large
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[18:00] <DoYouKnow> US is gonna test anther missile
[18:00] <DoYouKnow> get you're telemetry rx stuff ready guys
[18:01] <DoYouKnow> maybe let it run overnight, if you can
[18:03] <mfa298> I think there are some charging otg cables on everyones favourite auction site, although whether they work is a different question
[18:04] <daveake> hah :)
[18:08] <daveake> Yeah sounds possible electronics.stackexchange.com/questions/34741/can-an-android-tablet-serve-as-usb-host-and-be-charged-simultaneously-through-a
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[18:20] <SpeedEvil> Sort-of-on-topic. http://www.dss-space.com/products_solar_array.html - this is to launch possibly in April to ISS. 20kW, 164W/kg, and fits in one half of a cubic meter.
[18:21] <SpeedEvil> The current panels on ISS are more like 30W/kg.
[18:21] <SpeedEvil> Dawn is at 70.
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[19:51] <PE2BZ> !flights
[19:51] <SpacenearUS> 03PE2BZ: Current flights: 03UBSEDS18 434.612.5 CONTESTIA 16/1000 10(64a5), 03UBSEDS21 434.610 CONTESTIA 16/1000 10(2e88)
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[19:59] <SpacenearUS> New vehicle on the map: 03mg169706_chase - 12https://tracker.habhub.org/#!qm=All&q=mg169706_chase
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[20:19] <scherm> anybody on that's good have troubleshooting a habduino?
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[20:41] <Upu> hey scherm
[20:41] <Upu> evening
[20:41] <Upu> Denis ?
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[21:02] <scherm> Upu, been trying to get a hold of you for a while, how are you doing?
[21:02] <Upu> Very well thanks
[21:02] <Upu> I noticed but you come on @ 3am :)
[21:02] <Upu> Sorry in bed then
[21:03] <Upu> so whats the issue you're having ?
[21:05] <scherm> no, its okay. People need to sleep! I can't get GPS lock on a habduino.
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[21:19] <scherm> to save time, here's a link that explains everything I've done to try to troubleshoot the GPS lock issue
[21:19] <scherm> https://docs.google.com/document/d/1gNJXZCdkLW86z-qOvnb_GhPxqJJd7Ki8pJUDVqD6d2w/edit?usp=sharing
[21:28] <Upu> ok a few things pls
[21:28] <Upu> Are you using habduino code or flex track
[21:28] <Upu> Send a picture of the hard ware setup pls
[21:30] <Upu> and don't operate the HX1 with no antenna pls :)
[21:30] <Upu> are you using an original Arduino board or a clone
[21:31] <Upu> and finally are you Denis ?
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[21:34] <scherm> sure, using habduino code
[21:36] <scherm> HX1 has antenna
[21:36] <Upu> ok can you switch to Flextrack code please
[21:36] <scherm> pictures coming, hold on. I'm steve schermerhorn
[21:37] <Upu> https://github.com/HABduino/FlexTrack
[21:37] <Upu> ah ok this is interesting, whats your Arduino board ?
[21:37] <Upu> I have 2 people with seemingly identical issues
[21:37] <Upu> and I know the boards work as I tested them before shipping
[21:37] <scherm> clone arduino uno r3
[21:41] <scherm> pic of set up https://drive.google.com/open?id=0B5Paqkyy2y3Wd0xvbWFkcnlRN3M
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[21:43] <scherm> give me a 5-10 minutes to download/upload flextrack code
[21:46] <Upu> So warn is blinking ?
[21:46] <Upu> Can you check its a 5V arduino ?
[21:48] <scherm> warn light is blinking
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[21:57] <Upu> ok so its booted and just not getting a lock
[21:57] <Upu> have you take it outside ?
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[22:07] <schermtake2> I froze up back there, trying this again
[22:08] <schermtake2> when using habduino code, habduino boots up, but never achieves GPS lock even when outside for 30 minutes
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[22:16] <Upu> ok use flextrack
[22:16] <Upu> and open the serial monitor when its running
[22:16] <schermtake2> still having trouble uploading to arduino
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[22:21] <schermtake2> flextrack upload error 'SetupLEDs' was not declared in this scope
[22:25] <Upu> what version of Arduino are you using ?
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[22:31] <schermtake2> im using 1.6.12
[22:32] <daveake> You downloaded all the files?
[22:32] <daveake> SetupLEDs() is in led.ino
[22:33] <schermtake2> no, I have not. apparently
[22:33] <daveake> Thought not
[22:34] <schermtake2> hold on
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[22:42] <schermtake2> ok, have everything downloaded.
[22:42] <schermtake2> or at least think so
[22:42] <schermtake2> missing this file #include <I2C.h>
[22:46] <daveake> Yes you need the Arduino I2C library
[22:46] <daveake> http://dsscircuits.com/articles/86-articles/66-arduino-i2c-master-library
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[22:52] <schermtake2> sorry, can't find library on link to download
[22:53] <daveake> The link is next to the word "download"
[22:58] <schermtake2> k, found it
[23:01] <Upu> I have to go back tommorrow
[23:03] <schermtake2> k, added the library in but still doesn't see the I2C (has tab for it now in arduino program). I can fidget with it more.
[23:04] <daveake> No, it's a library, it doesn't appear as a tab
[23:04] <daveake> You need to install it as a library, through the menus
[23:04] <schermtake2> yes, right. (I should have known that). installing it in the libraries section
[23:09] <schermtake2> k, installed the I2C in arduino libraries. uploaded the flextrack sketch successfully
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[23:17] <SpacenearUS> New position from 03M10WX-11 after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=M10WX-11
[23:22] <SpacenearUS> New position from 03HIRF-6 after 036 days silence - 12https://tracker.habhub.org/#!qm=All&q=HIRF-6
[23:25] <schermtake2> Thanks for the help Dave!
[23:32] <SpacenearUS> New position from 03K6RPT-11 after 034 days silence - 12https://tracker.habhub.org/#!qm=All&q=K6RPT-11
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[23:36] <SpacenearUS> New position from 03HIRFW-6 after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HIRFW-6
[23:41] <SpacenearUS> New position from 03RSIST after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=RSIST
[00:00] --- Tue Feb 21 2017