highaltitude.log.20180311

[00:08] <SpacenearUS> New vehicle on the map: 03RS_N1630381 - 12https://tracker.habhub.org/#!qm=All&q=RS_N1630381
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[00:19] <SpacenearUS> New position from 03U3S22 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=U3S22
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[00:23] <SpacenearUS> New vehicle on the map: 03RS_N2430220 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2430220
[00:32] <SpacenearUS> New vehicle on the map: 03Vk6fjjm_chase - 12https://tracker.habhub.org/#!qm=All&q=Vk6fjjm_chase
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[00:36] <SpacenearUS> New vehicle on the map: 03RS_ - 12https://tracker.habhub.org/#!qm=All&q=RS_
[00:36] <SpacenearUS> New vehicle on the map: 03RS_N4620666 - 12https://tracker.habhub.org/#!qm=All&q=RS_N4620666
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[01:09] <The20YearIRCloud> I'm slightly confused on something - The FAA says that if a cell phone is used on a HAB, it can not transmit a radio signal. Is this only for non-hams, or cell-specific bands? I would love to be able to do a class-based HAB launch w/ camera and live data of some sort, but confused on regulations.
[01:21] <Ian_> I guess that it can only be used as deadweight or a camera then, in 'flight mode' . . . :) not a helpful term in this instance.
[01:23] <Ian_> Get a PiInTheSky and help the poor developers earn a crust, rather than getting crusts in the pokie for lofting a live phone.
[01:28] <SpeedEvil> Cell phones can be very, very unreliable at altitude.
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[05:22] Nick change: day__ -> day
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[05:53] <SpacenearUS> New position from 03HIRFW-6 after 0314 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HIRFW-6
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[10:27] <SpacenearUS> New vehicle on the map: 03RS_N2430230 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2430230
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[10:47] <torntrousers_> Hello. Could anyone give me any hints at what I'm doing wrong to get this error when trying to post payload sentences to habitat?
[10:47] <torntrousers_> [2018-03-11 10:40:33,149] INFO habitat.parser MainThread: All attempts to parse failed
[10:47] <torntrousers_> [2018-03-11 10:40:33,148] DEBUG habitat.parser MainThread: CantExtractCallsign exception in simple_binary: CantExtractCallsign
[10:47] <torntrousers_> [2018-03-11 10:40:33,148] DEBUG habitat.parser MainThread: CantParse exception in UKHAS: CantParse
[10:47] <torntrousers_> [2018-03-11 10:40:33,148] INFO habitat.parser MainThread: Parsing [b64] 'JCRITVMyLDEwLDAsMTA6NDA6MzEsMC4wMDAwMDAsMC4wMDAwMDAsMCo2MgoNCg==' (6cf322e9fe2abf33badb9e1b78cc39c4c1acbaf5fc3191c00c3cda522df10e6b) from HMS-TT1
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[10:54] <Darkside> torntrousers_: are you posting them yourself?
[10:54] <Darkside> using your own code?
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[10:54] <Darkside> can you give an example of the sentence you are posting?
[10:54] <Darkside> (so i dont have to de-base-64 it
[10:55] <Darkside> hrm
[10:55] <Darkside> i note there's \n\r\n on the end of it
[10:55] <torntrousers_> That error is from this one: $$HMS2,10,0,10:40:31,0.000000,0.000000,0*62
[10:55] <Darkside> can you try uploading with just one \n on the end
[10:56] <Darkside> im not sure if the parser likes all the trailing stuff
[10:56] <Darkside> (not sure why it shoudl care, but it doesn't decode without a \n on teh end of my strings)
[10:56] <torntrousers_> ah ok. Should there be any \r or \n at all?
[10:56] <Darkside> i have needed to have one \n on the end for it to work
[10:57] <Darkside> not sure if thats typical
[10:57] <torntrousers_> ok thanks, let me go try...
[10:57] <fsphil> I think it matters. the "official" format is "$$<string>*<crc>\n"
[11:00] <SpacenearUS> New vehicle on the map: 03HMS2 - 12https://tracker.habhub.org/#!qm=All&q=HMS2
[11:01] <Darkside> tadaah
[11:01] <Darkside> torntrousers_: congrats
[11:02] <torntrousers_> that was it. thanks!
[11:02] <Darkside> what are you writing the upload code in?
[11:03] <torntrousers_> https://github.com/HarringayMakerSpace/HabitatLoraGateway
[11:04] <Darkside> ah ok
[11:04] <Darkside> what on-air packet formats are you using?
[11:04] <Darkside> same as daveake's ?
[11:05] <torntrousers_> Just text, I don't know if its the same as daveake's? Does he use some binary format?
[11:05] <Darkside> nah he's using text
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[11:05] <Darkside> i'm the one that uses a small binary format :P
[11:06] <daveake> :)
[11:06] <Darkside> but its ok, you dont have to suport my payloads
[11:06] <Darkside> they're unlikely to get to where you are :P
[11:06] <torntrousers_> I wondered about doing that. Seems like it would be shorter so quicker to send?
[11:06] <Darkside> sure is
[11:06] <torntrousers_> do you have some code I can see show the format?
[11:07] <chris_99> Darkside: is it your own binary format you use, or something like msgpack?
[11:07] <Darkside> https://github.com/projecthorus/horus_utils/blob/master/horuslib/packets.py#L176
[11:07] <Darkside> oh wait, thats just the decoder bit
[11:07] <chris_99> ah cheers, so the binary format itself doesn't describe itself i guess?
[11:08] <Darkside> nope
[11:08] <Darkside> it's based on dave's code :P
[11:08] <Darkside> but i've modified and added bits
[11:08] <chris_99> cool
[11:09] <SpacenearUS> New position from 03IV3SRD-11 after 0320 hours silence - 12https://tracker.habhub.org/#!qm=All&q=IV3SRD-11
[11:09] <Darkside> it works for us, might not be suitable for everyone
[11:09] <chris_99> is there a legal maximum data rate/bandwidth you're allowed to use out of interest
[11:09] <Darkside> and i already have a codebase that surrounds it
[11:12] <torntrousers_> That has a quite a lot of fields in it, I see there is a shorter packet - https://github.com/projecthorus/horus_utils/blob/master/horuslib/packets.py#L129 - but that doesn't include altitude?
[11:12] <Darkside> the shorter packet wasnt intended for balloons
[11:12] <Darkside> it was somethign i was playing with to track a larger number of items, but at an increased update rate
[11:14] <Darkside> and yes, there's a lot of fields - they are mostly all used :P
[11:14] <Darkside> could probably remove the speed field, i ended up deciding it wasnt worth sending as i could calculate it on the ground easily enough
[11:17] <torntrousers_> So at the receiving end I could detect its a binary message by something like the first byte is not a '$' is there a list of the PacketType's?
[11:18] <chris_99> i'm just looking @ https://ukhas.org.uk/communication:licence_exempt does anyone use the 2.4GHz freq out of interest?
[11:18] <Darkside> torntrousers_: yeah there is a list, but dont worry about supporting it..
[11:18] <Darkside> better to support the stuff more commonly used
[11:19] <SpacenearUS> New vehicle on the map: 03RS_N3710270 - 12https://tracker.habhub.org/#!qm=All&q=RS_N3710270
[11:20] <SpacenearUS> New vehicle on the map: 03RS_N1143206 - 12https://tracker.habhub.org/#!qm=All&q=RS_N1143206
[11:28] <SpacenearUS> New vehicle on the map: 030000_chase - 12https://tracker.habhub.org/#!qm=All&q=0000_chase
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[11:37] <SpacenearUS> New position from 03RSIST after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=RSIST
[11:40] <SpacenearUS> New vehicle on the map: 03RS_N4710039 - 12https://tracker.habhub.org/#!qm=All&q=RS_N4710039
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[12:17] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12https://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
[12:22] <SpacenearUS> New position from 03U3B-10 after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=U3B-10
[12:22] <SpacenearUS> New position from 03U3S22 after 0312 hours silence - 12https://tracker.habhub.org/#!qm=All&q=U3S22
[12:34] <SpacenearUS> New position from 03HB9HFJ-11 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=HB9HFJ-11
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[12:53] <SpacenearUS> New position from 03VE2WMG-11 after 0316 hours silence - 12https://tracker.habhub.org/#!qm=All&q=VE2WMG-11
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[13:45] <SpacenearUS> New vehicle on the map: 03U3B-14 - 12https://tracker.habhub.org/#!qm=All&q=U3B-14
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[19:52] <torntrousers_> Hey. I'm interested in trying a pico balloon. Am I right in thinking I don't need a NOTAM for those 36inch foil party balloons and it would be ok to let one off in London?
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[20:02] <chris_99> Does anyone know if it's legal to use a sat uplink out of curiousity on a balloon, since looking at https://ukhas.org.uk/communication:licence_exempt it's talking about air --> ground
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[20:11] <SpacenearUS> New position from 03U3S22 after 038 hours silence - 12https://tracker.habhub.org/#!qm=All&q=U3S22
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[20:30] <Mike-SA6BSS> torntrousers_: what I have learned is that if the length (diamapet) of the whole ballon coed payload is withon 2m you can launch without notam
[20:31] <Mike-SA6BSS> make sure the prediction not taking it over any nearby airport
[20:32] <Mike-SA6BSS> *(diameter)
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[20:40] <torntrousers_> thanks Mike-SA6BSS
[20:41] <torntrousers_> does the habhub predictor work for pico balloons?
[20:42] <Mike-SA6BSS> yes , I put in something like this and it is quite accurate http://predict.habhub.org/#!/uuid=0fed0c7fd4e339fe1e49f70292f7443a8f8515c3
[20:42] <Mike-SA6BSS> and there is noaa site as well when the balloon have reach float https://ready.arl.noaa.gov/hypub-bin/trajtype.pl
[20:45] <Mike-SA6BSS> I can reccomend those balloons before the qulatex https://www.aliexpress.com/item/24-Inch-1pcs-Clear-Foil-Balloons-Transparent-Aluminum-Balloon-Wedding-Birthday-Party-Decorations-Balon-Globos/32699218436.html?spm=a2g0s.9042311.0.0.xdX3mh
[20:45] <Mike-SA6BSS> quite alot cheaper and stays afloat much longer
[20:45] <Mike-SA6BSS> its a tad smaller then the qualatex so aim for max 7-8 gram tracker and antenna
[20:46] <torntrousers_> thats interesting, thanks.
[20:46] <torntrousers_> is that 7-8 gram's including power source?
[20:51] <Mike-SA6BSS> yes , total mass
[20:51] <torntrousers_> crikey
[20:52] <torntrousers_> back to the drawing board for me then. my tracker so far is about 8 grams without a battery
[20:52] <Mike-SA6BSS> i´m down to below 5 with my latest pico :) no batterys on that ofc
[20:52] <Mike-SA6BSS> just solar
[20:53] <Mike-SA6BSS> so , just skip the battery and pwer it directly with solar and maby a 0,5F supercap, they are less the 0,6 gram
[20:54] <torntrousers_> how much weight can a qualatex one do?
[20:54] <Mike-SA6BSS> its all about altitude
[20:55] <Mike-SA6BSS> I have launcjed 26 gram under one and it got to 6000 meter
[20:55] <torntrousers_> and floated?
[20:55] <Mike-SA6BSS> when I sat a 6,2 gram under one it got over 10000m
[20:55] <Mike-SA6BSS> yes
[20:56] <Mike-SA6BSS> sot
[20:56] <Mike-SA6BSS> sorry that was 16 gram
[20:56] <Mike-SA6BSS> 6000m
[20:57] <Mike-SA6BSS> I got up over 10900m at highest point
[20:57] <Mike-SA6BSS> with a 6.2 gram
[20:58] <Mike-SA6BSS> there is quite some quality difference between the deferent production runs of the qualtaex, the differ up to 5 gram depending on what manufacturing date you get
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[21:02] <Mike-SA6BSS> and as they are (usuly) silver coating they reflect IR radiation during night and tends to freeze - atrackts mointure as they get colder then the surronig air and fall down, those clear ones I linked to warms up during night and keeps warmer then the surrounding air and seems to fly longer
[21:03] <torntrousers_> ok!
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[21:04] <torntrousers_> what about using two at a time of the clear ones?
[21:14] <Mike-SA6BSS> yes, will get you aboutanother 500m alt
[21:15] <torntrousers_> butthe weight could be a bit more, say 16grams for a tracker and battery?
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[21:24] <Mike-SA6BSS> one extra balloon wont get you that much extra altitude
[21:24] <torntrousers_> do you hacve anything online I can see for how you make your solar powered ones?
[21:26] <Mike-SA6BSS> nothing online
[21:27] <Mike-SA6BSS> what voltage are you driving it with and how many mA does it consume
[21:27] <Mike-SA6BSS> tx mode?? aprs wspr ?
[21:32] <torntrousers_> is this you - https://groups.io/g/QRPLabs/topic/4656379
[21:37] <Mike-SA6BSS> yes
[21:38] <Mike-SA6BSS> there is some pictures on some of the launches if you search for BSS5 bss6 and so on
[21:38] <Mike-SA6BSS> on that channel
[21:42] <torntrousers_> what solar panels do you use? I've wonder about these type of things - https://www.ebay.co.uk/itm/PowerFilm-Flexible-Solar-Cells-3v-25ma-MP3-25-Fast-Delivery/263492175734
[21:43] <Mike-SA6BSS> that was a new one for me , interesting!!
[21:43] <Mike-SA6BSS> I use cheap 100psc packs from aliexpress or ebay
[21:44] <Mike-SA6BSS> lets ee if I can find a link
[21:45] <Mike-SA6BSS> just search for Polycrystalline Solar Cells
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[23:17] <SpacenearUS> New vehicle on the map: 03RS_N3640258 - 12https://tracker.habhub.org/#!qm=All&q=RS_N3640258
[23:18] <SpacenearUS> New vehicle on the map: 03RS_N1740427 - 12https://tracker.habhub.org/#!qm=All&q=RS_N1740427
[23:20] <SpacenearUS> New vehicle on the map: 03RS_M4853069 - 12https://tracker.habhub.org/#!qm=All&q=RS_M4853069
[23:22] <SpacenearUS> New vehicle on the map: 03RS_N2430242 - 12https://tracker.habhub.org/#!qm=All&q=RS_N2430242
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[23:27] <SpacenearUS> New vehicle on the map: 03VK5QI-9_chase - 12https://tracker.habhub.org/#!qm=All&q=VK5QI-9_chase
[23:28] <SpacenearUS> New vehicle on the map: 03RS_P0210339 - 12https://tracker.habhub.org/#!qm=All&q=RS_P0210339
[23:39] <SpacenearUS> New position from 03RSIST after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=RSIST
[23:54] <SpacenearUS> New vehicle on the map: 03RS_N1630385 - 12https://tracker.habhub.org/#!qm=All&q=RS_N1630385
[00:00] --- Mon Mar 12 2018