highaltitude.log.20170918

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[00:16] <Ian_> Gordon (Steve) Bennett, no auditors internal or otherwise! :) Sometimes I don't fully trust myself, who outsource total trust to someone else!
[00:16] <SpacenearUS> New position from 03STROMLO after 033 days silence - 12https://tracker.habhub.org/#!qm=All&q=STROMLO
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[01:43] <SpacenearUS> New position from 03KC1EAI after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KC1EAI
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[03:13] <labjg> Can anyone here demystify habitat/habhub pressure units for me? I have kPa value; can I specify this unit or is the only option to scale by 1000 to get default unit of Pascals?
[03:13] <adamgreig> yea scale by 1000 to get Pa
[03:13] <adamgreig> the idea is you provide whatever scale factor is required to convert to the stock units
[03:13] <adamgreig> (pascals)
[03:15] <labjg> thanks! ok, so no way to specify a different unit..?
[03:15] <adamgreig> that's correct
[03:15] <labjg> I know Pa is SI, but '920000 Pa' looks a bit silly
[03:16] <labjg> ok no problem
[03:16] <labjg> i did get a bit confused by the text at http://habitat.habhub.org/genpayload/
[03:17] <labjg> wait, now i re-read it it makes sense
[03:17] <labjg> "Please tell habitat how to convert all of your sensor readings".. For some reason I took that as tell habitat what units you want
[03:17] <labjg> cheers
[03:17] <adamgreig> there's a little more detail on http://habitat.readthedocs.io/en/latest/ukhas_parser.html
[03:18] <adamgreig> for display purposes on the tracker etc thigns might convert your Pa to eg kPa
[03:18] <adamgreig> but the database stores the unconverted value (ideally)
[03:18] <labjg> ok fair requirement i suppose
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[05:57] <SpacenearUS> New position from 03U3S18 after 039 hours silence - 12https://tracker.habhub.org/#!qm=All&q=U3S18
[06:04] <labjg> Does anyone know where I could find GPS telemetry data from past real HAB flights? To be used as simulated inputs to offline landing prediction code.. :)
[06:04] <labjg> (Or does anyone have files they'd be filling to share?)
[06:05] <labjg> or willing
[06:13] <SpacenearUS> New vehicle on the map: 03UBNL - 12https://tracker.habhub.org/#!qm=All&q=UBNL
[07:08] <Mike-SA6BSS> labjg: is it something like this you want https://imgur.com/a/RdLGO
[07:08] <Mike-SA6BSS> just a random BARC flight http://habitat.habhub.org/habitat/_design/ept/_list/csv/payload_telemetry/payload_time?include_docs=true&startkey=[%2257b2e73d13e0426dc7f001850c12bb39%22]&endkey=[%2257b2e73d13e0426dc7f001850c12bb39%22,[]]&fields=_sentence
[07:08] <Mike-SA6BSS> find a payload here and export raw data http://habitat.habhub.org/ept/
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[08:35] <SpacenearUS> New position from 03KF5KMP-8 after 038 days silence - 12https://tracker.habhub.org/#!qm=All&q=KF5KMP-8
[08:38] <SpacenearUS> New position from 03PITEL after 0319 hours silence - 12https://tracker.habhub.org/#!qm=All&q=PITEL
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[11:18] <SpacenearUS> New position from 03YPADSONDE after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=YPADSONDE
[11:33] <Laurenceb> !whereis HIRFW-6
[11:33] <SpacenearUS> 03Laurenceb: 03HIRFW-6 was over 03North Atlantic Ocean 10(19.48107,-67.03785) at 0312999 meters about 0314 hours ago
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[11:50] <SpacenearUS> New position from 03HIRFW-6 after 0314 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HIRFW-6
[11:52] <Laurenceb> !whereis HIRFW-6
[11:52] <SpacenearUS> 03Laurenceb: 03HIRFW-6 is over 03Caribbean Sea 10(18.48107,-75.03785) at 0312999 meters
[11:52] <Laurenceb> 2 days to go
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[12:01] <SpacenearUS> New vehicle on the map: 03PILOTS-GR - 12https://tracker.habhub.org/#!qm=All&q=PILOTS-GR
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[12:14] <SpacenearUS> New vehicle on the map: 03SITS2 - 12https://tracker.habhub.org/#!qm=All&q=SITS2
[12:18] <SpacenearUS> New vehicle on the map: 03BARC5 - 12https://tracker.habhub.org/#!qm=All&q=BARC5
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[12:44] <SpacenearUS> New position from 03KC1EAI after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KC1EAI
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[13:11] <SpacenearUS> New position from 03PILOTS-BL after 033 days silence - 12https://tracker.habhub.org/#!qm=All&q=PILOTS-BL
[13:11] <Laurenceb> !whereis HIRFW-6
[13:11] <SpacenearUS> 03Laurenceb: 03HIRFW-6 was over 03Caribbean Sea 10(18.10607,-75.62119) at 0313887 meters about 0311 minutes ago
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[13:47] <SpacenearUS> New vehicle on the map: 03BARC6 - 12https://tracker.habhub.org/#!qm=All&q=BARC6
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[14:12] <SpacenearUS> New vehicle on the map: 03KC1EAI-11 - 12https://tracker.habhub.org/#!qm=All&q=KC1EAI-11
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[14:14] <Laurenceb> !whereis HIRFW-6
[14:14] <SpacenearUS> 03Laurenceb: 03HIRFW-6 is over 03Caribbean Sea 10(17.35607,-76.28786) at 0313887 meters
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[14:32] <SpacenearUS> New vehicle on the map: 03Infinity2 - 12https://tracker.habhub.org/#!qm=All&q=Infinity2
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[14:51] <SpacenearUS> New vehicle on the map: 03WX4SKY_chase - 12https://tracker.habhub.org/#!qm=All&q=WX4SKY_chase
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[15:12] <userscott> Morning Sportsfans
[15:13] <userscott> General trivia question for the antenna guys! I have a Nagoya MAG-75EL-2W (http://www.nagoya.com.tw/en/2-2277-66839/product/MAG-75EL-2W-id385518.html) in my stores, and not entirely comfortable with the most suitable antenna for my balloon launch coming up in less than 4 weeks!
[15:14] <userscott> Would anybody be able to advise the suitability of the above?
[15:14] <userscott> We will be launching on 434.134 mhz.
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[15:17] <Ian_> Hi userscott, that looks to be not a bad mobile antenna. Designed for a PL259 mounting bracket, roof rack, magmount(?) or similar on a vehicle. Where the vehicle body acts as the ground plane.
[15:18] <userscott> Thanks Ian, I have a PL259 Mag Mount as you suggest already.. :)
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[15:19] <Ian_> to complete the antenna system. Just make sure that it doesn't slip off the back of your roof/trunk as you dash down the turnpike . . .
[15:19] <userscott> I was going to take my Diamond X30 but I can take this far easier!
[15:19] <userscott> Hahaha! I shall secure it accordingly... I'll be bringing it frmo the UK to Colorado so hoping it makes it in one piece.
[15:20] <Ian_> Diamond X50 is a base station antenna or one to put up a decent pole. Horses for courses of course. I can see that the security check could be fun.
[15:21] <userscott> I shall pack the Nagoya then....
[15:21] <userscott> Could you recommend a backup/alternative? :)
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[15:21] <Ian_> I used to travel with a violin fifteen years ago, but haven't even contemplated it in the last ten. Baggage and security restrictions etc. have just become totally unfunny.
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[15:22] <Ian_> So I choose not to play (no pun intended), but this is the HABosphere after all :)
[15:23] <userscott> Hahaha!
[15:23] <userscott> Recent trips trying to get an OpenROV (underwater robot) around airport security have also put me off..
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[15:26] <Ian_> It's called progress . . . oops, wasn't that designed as a disposable (handy feature given the circumstances) Russian supply craft in the astronautic flavour of things?
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[15:52] <Laurenceb> anyone here used sharepoint with linux?
[15:53] <fsphil> and who's willing to admit it?
[15:53] <Laurenceb> heh
[15:53] <Laurenceb> /sbin/mount.davfs: can't evaluate path of mount point (null)
[15:53] <Laurenceb> its going well for me
[16:00] <Laurenceb> now 403 FORBIDDEN
[16:00] <Laurenceb> funtimes
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[17:12] <SpacenearUS> New vehicle on the map: 03VEGA2 - 12https://tracker.habhub.org/#!qm=All&q=VEGA2
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[17:52] <PE2BZ> !flights
[17:52] <SpacenearUS> 03PE2BZ: Current flights: 03HG8LXL 10(7d09), 03SP9UOB-P30 144.251 MHz CTSTIA 10(cbd2)
[17:52] <PE2BZ> !payload infinity2
[17:52] <SpacenearUS> 03PE2BZ: Can't find a flight doc matching your query
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[20:02] <SpacenearUS> New position from 03ttntest1 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=ttntest1
[20:07] <Laurenceb_> !whereis HIRFW-6
[20:07] <SpacenearUS> 03Laurenceb_: 03HIRFW-6 was over 03Caribbean Sea 10(13.85607,-76.70452) at 0314221 meters about 037 minutes ago
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[20:17] Nick change: userscott1 -> userscott
[20:25] <userscott> Gonna be a pain in the arse now, I asked for a reccomendation for a backup chase car antenna and saved a link to the Farnell site from DaveAk and another user, and now I've lost that link. Who's feeling reccomendy?! :)
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[20:34] <userscott> 3D printed Hyowee > 20 mm adaptor... https://imgur.com/1NXG4lL
[20:35] <userscott> 562 g payload - just needs GoPro actually installing! https://imgur.com/qE9O8Le
[20:35] <userscott> main train w/ bearing to stop tangles and 5m of 1.0 mm cord & 48" parachute https://imgur.com/enUgzP5
[20:35] <userscott> can't wait to lose my first ever balloon
[20:36] <fsphil> this? https://cpc.farnell.com/watson/wsm-270/wsm-270-mini-mag-antenna/dp/IT44456
[20:36] <userscott> fsphil; i shall get you a beer.
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[20:42] <daveake> fsphil doesn't drink beer, so that'd be wasted
[20:42] <daveake> I wouldn't waste it tho ...
[20:44] <daveake> And re the chute ... that seems rather large for 560g + gopro
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[21:08] <Ian_> :)
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[21:13] <SpacenearUS> New vehicle on the map: 03UBNL - 12https://tracker.habhub.org/#!qm=All&q=UBNL
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[21:19] <userscott> daveake, it gets worse - the balloon is 1200g lol
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[21:19] <userscott> I have a 420 g radar reflector that I can hang behind it worse case
[21:22] <userscott> We have a 1m chute and 600 g ballon from High Altitude Science waiting for us over there... that'll be my practise for using this lovely habhub setup! :D
[21:23] <daveake> First, balloon makes little difference to the chute size, as it bursts
[21:23] <daveake> Next, I bet you can make a radar reflector for less than that weight
[21:24] <daveake> A 48" chute is good for around 2kg payload
[21:25] <userscott> If we have some payload to kill, a chap I know (Pete Blacker) has some sorta satellite thing he wants to send up. I think I did my maths around our main launch being at the 850 gram mark.
[21:25] <daveake> Which is fairly hefty, though I do appreciate this is a USA job where it counts as a pico :)
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[21:26] <userscott> I think where this all came from was our original aspiration to send up a 1300 gram payload
[21:26] <userscott> But we never got our launch paperwork through from the germans and still not brave enough to launch in the UK without it ending up in the sea!
[21:26] <daveake> In the UK, 2kg gets you into the medium/large balloon categories, with all the extra approval and other work
[21:28] <daveake> If you launch in the UK (at less than 2kg) you just need a suitable prediction and fill it properly to ensure it doesn't get near the sea
[21:28] <userscott> If i understand correctly, no paperwork needed for sub 2000g in UK?
[21:28] <daveake> Going to the USA sounds like a very expensive way of not landing in the sea
[21:28] <daveake> No, you need permission + NOTAMM
[21:28] <daveake> -M
[21:29] <userscott> the Missus lives there so it's a three weekly thing - just for the weekend this time for an open source hardware expo in denver.... so taking the piss a bit and shipping two payloads over!
[21:29] <daveake> Over 2kg you need all sorts of extras - only launch from a danger zone, lodge a flight plan, 2 independent cutdown methods, etc
[21:30] <userscott> I suspect I will never launch over 2kg now... !
[21:30] <daveake> No, it's a complete PITA (I'm told - not had to go through the process myself)
[21:32] <daveake> Extra weight also of course means extra gas, thicker payload line (I wouldn't use 1mm myself for anything over 1kg), and a more difficult fill and launch because of the pull from the balloon
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[21:32] <userscott> Would you say 1mm is undersized for my (roughly) 600 g payload plus 1200 g balloon? I ordered 100 m of 1.5 today just incase..
[21:33] <daveake> I had a 0.7mm line snap just with the balloon pulling in the wind
[21:33] <daveake> So I tend to be cautious
[21:34] <userscott> As a climber/caver I have to say I didn't like the 1 mm thing..!
[21:34] <userscott> Latest launch plans: https://coggle.it/diagram/Wa284IK2OgABvi3-/5c90c462f14f17cb337cd9b951fe25a2a42ba80b817b6a6c88435c7f8d041a2a
[21:34] <SpacenearUS> New vehicle on the map: 03KC2PIT-3 - 12https://tracker.habhub.org/#!qm=All&q=KC2PIT-3
[21:35] <daveake> Warming pouches ?
[21:35] <userscott> They've been removed now! :)
[21:36] <userscott> They should be coloured red to denote binned.
[21:36] <userscott> I timed them and they lasted 6 minutes lol
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[21:37] <daveake> Not needed anyway
[21:37] <userscott> I understand now about the lack of oxygen up there causing unusual thermal behaviour in electronics
[21:37] <userscott> I think I read a dodgy guide and got excited.
[21:39] <gonzo_> lack of air generally
[21:39] <daveake> Lack of oxygen?
[21:39] <gonzo_> assume that was what you meant
[21:39] <daveake> Lack of air means less convective loss means kit can get warmer than otherwise
[21:40] <userscott> that's the one! :D
[21:40] <gonzo_> possibly slightly elevated (pun) levels of He, with all the wastage
[21:40] <daveake> :)
[21:40] <userscott> so, so so blood nervous about radio failure. My trusty Yaesu better be trusty!
[21:40] <userscott> the tracking network doesn't appear to be amazing there
[21:41] <gonzo_> where is there?
[21:41] <userscott> @GONZO_ https://goo.gl/maps/GfePMpNtw1q
[21:41] <userscott> x marks the spot!
[21:43] <daveake> APRS is a worthwhile backup, but RTTY and/or LoRa in the chase car should sort it for you, provided you drive in the right general direction :)
[21:43] <Laurenceb_> !whereis HIRFW-6
[21:43] <SpacenearUS> 03Laurenceb_: 03HIRFW-6 is over 03Caribbean Sea 10(13.02274,-76.20452) at 0313887 meters
[21:43] <userscott> RTTY is all we will have.......
[21:44] <daveake> Get practicing your receiving skills, and testing your kit
[21:44] <daveake> So, track other people/s flights from home, and perhaps help chase one
[21:44] <userscott> I've read every guide there is - but still can't decipher the single best testing method for the payload. Any clues to a noob?
[21:44] <userscott> I track from home when possible (live in hotels in teh week)
[21:45] <userscott> But that's a good idea I'll try chase somebody elses
[21:45] <daveake> Is the payload expensive ?
[21:46] <userscott> https://imgur.com/qE9O8Le PITS, Pi Model A, GoPro 4 Black, Pi Camera, that's about it. Nothing silly..
[21:46] <daveake> Meh
[21:46] <daveake> Not a huge loss, and less than your flights probably
[21:46] <userscott> Exactly, it's not the end of the world and as a kinasthetic learner.......
[21:47] <daveake> You could do a test flight with just the tracker, if you want practice
[21:47] <daveake> Biggest risk tbh is the Hero overheating
[21:47] <daveake> As you've chosen the model well known for doing that
[21:47] <userscott> I was just designing a mount to fix it into the side of the payload. I also have a 3+....
[21:48] <userscott> I could shove that in, instead.
[21:48] <userscott> (thanks for your help BTW. greatly appreciated. v nervous!)
[21:51] <userscott> Perhaps you could provide a concensus on something for me - shoving a mobile phone in - so many places have suggested this yet so many have said don't be silly. I'm quite heavily verging towards the don't bother side
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[21:52] <gonzo_> people using gps-gsm trackers have low success.
[21:52] <gonzo_> 50% if that
[21:52] <userscott> Probably not worth losing yet more equipment over..
[21:53] <userscott> PS ordered the Watson mini mag from CPC :)
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[21:53] <gonzo_> above a few 1000ft the phones get no coverage, out of the beam of the cell sites, poss seeing lots of distant sites?
[21:53] <SIbot> In real units: 1000 ft = 305 m
[21:53] <userscott> that and my nagoya shoudl have me covered. http://www.nagoya.com.tw/en/2-2277-66839/product/MAG-75EL-2W-id385518.html
[21:54] <userscott> LOL at SIbot
[21:54] <gonzo_> and on the ground they lose signal unless a strong local cell
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[21:55] <gonzo_> so the tracker needs to register and be lucky enough to send an sms, as is descends through that level and lands
[21:55] <userscott> I suspect it has more chance of moon walking. I shall leave it on the shelf in stores..
[21:55] <gonzo_> suggest before launch, making sure you can still receive the payload from a few 100yds away
[21:55] <userscott> Will I have to wait until 72 hours prior to register my flight documents to practise with her on the map...?
[21:56] <userscott> Gonzo thanks for the tip. I'll try that this weekend.
[21:56] <gonzo_> ah, I beat sibot!
[21:56] <gonzo_> you will appear on the habhub map as soon as you have done a payload doc
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[21:57] <gonzo_> the flight dock just puts you in the calander on the sidebar
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[21:57] <userscott> OK thanks for that. I tested the other day but I had no GPS fix in my unit so I wonder if that's why she didn't appear on the map.
[21:57] <Ian_> Very likely
[21:57] <userscott> Have to say thanks lads for the tips - slowly calming my nerves!
[21:57] <gonzo_> testing from a distance will chech that the payload antenna is connected and working
[21:58] <gonzo_> so many times teams have lost sigs just seconds after launch, as their antenna is damaged/wrong
[21:59] <userscott> I so hope my antenna is correct. I religiously followed the instructions...
[21:59] <gonzo_> and don't release till you have gps lock
[21:59] <userscott> I can't get the central tail to sit straight.. I suspect that's a job stopper!
[21:59] <gonzo_> best to have the payload running on testv whilst you fill.
[21:59] <gonzo_> it at least wakes people up watching the map
[22:00] <Ian_> If you have a gps fix and it's not appearing on the map, then it's time to check out the Habitat parser logtail http://habitat.habhub.org/logtail/
[22:00] <userscott> https://imgur.com/qE9O8Le I've left a USB "shore supply" for testing
[22:00] <gonzo_> that would be the 'deiven element'
[22:00] <gonzo_> driven
[22:00] <Ian_> Always assuming that you have a payload doc
[22:00] <userscott> https://imgur.com/enUgzP5 this shows the antenna reasonably well
[22:00] <userscott> Ian_ yes that's correct, she's as MYLOFF2 on HabHub
[22:01] <Ian_> :)
[22:01] <userscott> I haven't yet modified it to show my external temp sensor. I might abandon that to be fair...
[22:02] <gonzo_> you could glue a drinking straw to support the antenna element
[22:03] <userscott> I'll have to assemble that on the launch - not a problem. I was being hopeful that I might be able to reuse the payload (assuming I find it lol)
[22:03] <userscott> Would be nice to get some air miles on her
[22:03] <gonzo_> what balloon are you using?
[22:03] <userscott> Hyowee 1200g
[22:03] <userscott> https://imgur.com/1NXG4lL this is our filling adaptor
[22:03] <gonzo_> should get a good alt
[22:05] <Ian_> Upu was having a lot of difficulty getting rid of aged trackers a while ago.They were all eminently recoverable.
[22:05] <userscott> Missus and I really wanna get the miles in on one payload, sorta like a baby SpaceX thing lol. We have an OpenROV 2.8 (https://www.openrov.com/) and we've dragged it all over the planet with no mercy.
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[22:07] <userscott> This is our container. They're around £4 if you shop around. The top half if you look closely has lots of internal reinforcement to clamp around the lid of the bottle - it might it really quite easy to attatch with a fastening system we were comfortable with: https://www.amazon.co.uk/POLYSTYRENE-BOTTLE-PACKAGING-POLYSAFE-LIGHTWEIGHT/dp/B0096NWYXS
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[22:46] <Laurenceb_> !whereis HIRFW-6
[22:46] <SpacenearUS> 03Laurenceb_: 03HIRFW-6 was over 03Caribbean Sea 10(12.48107,-75.03785) at 0313999 meters about 0315 minutes ago
[22:46] <Laurenceb_> under 2 days now
[22:50] <mfa298> userscott: for launhing in the US you might need to also have your amateur calsign in the sentence (assuming you've got a US or full UK license)
[22:51] <mfa298> I don't think 434MHz is an ISM band in the same was as EU
[22:56] <Ian_> Hmmm. perhaps someone like adamgreig could confirm or deny what I am about to say, but if using your UK callsign when in the states, their rules claim that you get to use the minimal subset of their plus your UK rules . . . no airborne amateur radio transmissions.
[22:57] <Ian_> That being the case you would need a US licence to transmit on 434MHz.
[22:57] <userscott> My partner is American so she can launch it!
[22:57] <Ian_> Whew, good planning.
[22:58] <adamgreig> Yes my understanding was you can't use a UK amateur callsign airborne legally in the states
[22:58] <adamgreig> Though if someone else has a callsign you're sorted of course
[22:59] <userscott> How does it become a UK callsign - I can just get her to register it? :o
[23:01] <mfa298> you cam use a full UK calsign in certaing countries (US included) under the CEPT agreement, in which case you normally prefix the callsign with the prefix for where you are
[23:02] <Ian_> If you had been using your UK callsign in the US. In Germany if you are DL/M0abc then German rules say you are allowed, but each National Administration gives you the privileges that they wish you to have. US it outside the CEPT agreements and have a somewhat different way of thinking.
[23:03] <Ian_> US it - US is
[23:03] <userscott> Isn't my Callsign just an arbitary nice name though in this context?...
[23:03] <mfa298> userscott: this is for amateur radio callsigns which are allocated after applicable exams.
[23:04] <userscott> Ah well that's an issue. I have various marine and VHF exams but nothing around 434!
[23:04] <Ian_> Not if you are in the US where 434MHz has no ISM band allocation
[23:04] <mfa298> In the UK (and EU) 434MHz is an amateur radio band and ISM band, so HAB payloads oprate under ISM rules (10mW etc)
[23:04] <Ian_> Partner has US amateur radio licence?
[23:04] <userscott> Nein
[23:04] <mfa298> but in the US it;s only a amateur radio band
[23:04] <Ian_> Oooops
[23:06] <Ian_> I think that the weight of your radar reflector has just become insignificant . . . You need a sponsor with a licence to cover the paperwork and be responsible for the launch, NOTAM, permissions etc.
[23:08] <userscott> Looking at FAA guidance as our hab is under 4lbs it doesn't require any paperwork? I'll get the missus on an amatuer radio course immediately!
[23:08] <SIbot> In real units: 4 lbs = 1.8 kg
[23:08] <Ian_> Sounds like a plan.
[23:09] <userscott> http://community.balloonchallenge.org/t/regulations-overview-including-contacting-the-us-faa/676 Reading this, asides from license we don't need paperwork? although I've probably read it wrong. :D
[23:10] <userscott> SWMBO has been advised RE: license!
[23:10] <Ian_> She is going to hold you to ransom. This could cost you a new hat or outfit.
[23:11] <userscott> Usually shoes...!
[23:11] <userscott> :D
[23:11] <Ian_> Don't tell me, Imelda!
[23:13] <userscott> This license is gonna kill us. I kinda assumed it would be anything goes like in the UK with 434
[23:17] <Ian_> Far from anything goes in the UK on 434MHz, but the rules allow it and we follow the UK/EU guidelines. The US is a different sphere of influence/regulation of course. Assumptions are pitfalls for the unwary. In the US on 434MHz, because you will be working under AmRadio rules, you will also need to be using an AmRadio callsign, not a made up one which people here use under ISM rules.
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[23:18] <Ian_> In fact on here, you will notice user amateur radio callsigns, but not in flight, so that others are clear that our flights are using ISM band and not using AmRadio rules.
[23:19] <Ian_> I understand that the US Technicians licence is a relative doddle, once you find where you can take the exam.
[23:20] <SpacenearUS> New position from 03YPADSONDE after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=YPADSONDE
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[23:21] <userscott2> Ian_, this doesn't aid with the USA situation right? We will always need a license?
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[23:22] <userscott2> Looking for a Tech license in CA is getting difficult. It looks like the next one is too late. Hmmm. Will try NJ
[23:23] <userscott2> I need to see if any of my licenses cover 434 but I put money on them not doing and even then, I imagine it's worthless in the USA.
[23:23] <mfa298> unless you find a US ISM band (which the first one might be 915MHz)
[23:23] <Ian_> That's right, a US licence to be able to tx airborne. I was giving you background information about the bigger picture, which had obviously influenced some of your thinking along the way. Sorry if it muddied the issues.
[23:24] <userscott2> 915 mhz covers USA but suspect I would need all new radio tackle?
[23:25] <Ian_> ^^ mfa298 suggestion would be a simpler option, at the possible expense of range and lack of suitable rx gear - SDR would be ideal.
[23:25] <userscott2> Looks like 915 mhz would cover us but ah man. Damn.
[23:26] <userscott2> Gotta be 434......
[23:26] <Ian_> I believe that the Pits uses NTX2B-AF transmitter. It may be simple to swap in a 915MHz version
[23:26] <userscott2> Will be cheaper to fly to a local state with an examination on.
[23:26] <Ian_> Why 434, competition rules?
[23:27] <userscott2> Really don't wanna be procuring and testing new radio kit at the 11th hour..
[23:27] <mfa298> the USA license would also allow for more power, and would also allow the use of APRS
[23:29] <Ian_> Back to my comment about needing a US Amteur Radio licensed sponsor (patsy). Time to trawl the friends network for such a person.
[23:30] <Ian_> It's the simplest solution in my mind.
[23:33] <gonzo_> I wonder what erp is considered transmitting?
[23:50] Action: Laurenceb_ just tried to open a 1GB csv file in matlab
[23:50] <Laurenceb_> bad idea...
[23:50] <Ian_> Who, Wyatt Erp?
[23:51] <Ian_> He was the guy with the 3dB pistols
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[00:00] --- Tue Sep 19 2017