highaltitude.log.20150716

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[03:33] <SpacenearUS> New vehicle on the map: 03M0RPI_chase - 12http://tracker.habhub.org/#!qm=All&q=M0RPI_chase
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[05:34] <G8KNN> I have to inform you of my Fathers death, I enclose the death certificate. I am the executor named in the will and have been granted probate in order to administer all my Fathers affairs. I also enclose the grant of probate.
[05:34] <G8KNN> I would be grateful if you could release the funds from the bond which my Father held with Aviva. Please make the cheque payable to myself as the executor.
[05:34] <G8KNN> Please send both the death certificate and grant of probate back to me, since I will need them again.
[05:34] <G8KNN> Thank you for you assistance.
[05:34] <G8KNN> ooops
[05:34] <G8KNN> ignore that
[05:36] <G8KNN> :-)
[05:47] <SpacenearUS> New vehicle on the map: 03KK6UUQ-1 - 12http://tracker.habhub.org/#!qm=All&q=KK6UUQ-1
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[06:15] <OK1RAJ> RAJ-2 start have been delay... We have clouds over Prague now... We are ready to start when the sun work corectly... :-)
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[07:25] <fsphil> hah
[07:25] <fsphil> yes please fix it
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[08:05] <SpacenearUS> New vehicle on the map: 03RPF-PITS - 12http://tracker.habhub.org/#!qm=All&q=RPF-PITS
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[08:27] <pb5a> !flights
[08:27] <SpacenearUS> 03pb5a: Current flights: 03SP3OSJ 144.7MHz RTTY 100bd 450/7n2 10(b234), 03RPI Test Flight 10(7795), 03RAJ-2 launch 10(2df6)
[08:30] OK1RAJ_ (5918efac@gateway/web/freenode/ip.89.24.239.172) joined #highaltitude.
[08:31] <OK1RAJ_> RAJ-2, sky is clear over Prague now, we are ready to take off... to 9:00 UTC
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[08:34] <Vaizki> yea sorry about that we borrowed the sun for a day
[08:34] <Vaizki> it's a tradition, summer is the best day of the year in Finland and we need the sun for it :)
[08:37] <SpacenearUS> New vehicle on the map: 03RPF-PITS-LORA - 12http://tracker.habhub.org/#!qm=All&q=RPF-PITS-LORA
[08:40] <SpacenearUS> New vehicle on the map: 03RAJ-2 - 12http://tracker.habhub.org/#!qm=All&q=RAJ-2
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[08:42] <Vaizki> hey ibanezmatt13, did you get to the bottom of your busylooping?
[08:42] <ibanezmatt13> Morning Vaizki
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[08:42] <ibanezmatt13> noope
[08:43] <ibanezmatt13> I have no idea now what the problem is, might just re-write it or something
[08:43] <TT7> OK1RAJ: good luck, I'll be waiting for RAJ-2's signal at the other side of the country
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[08:49] <Vaizki> ibanezmatt13, doh.. maybe someone here can spot the problem :P
[08:50] <ibanezmatt13> yeah, I'll fire up the laptop and put a copy out shortly just in case :)
[08:51] <ibanezmatt13> I'm looking at balloon floating too, trying to work out how the sun affects temp/pressure in and out of the balloon
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[09:24] <ok1cdj> hello all
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[09:29] <LunarWork> hello
[09:29] <garymortimer> Hi
[09:31] <garymortimer> different payloads being switched on in Cambridge?
[09:31] <daveake> rning
[09:31] <daveake> erm
[09:31] <daveake> morning
[09:31] <daveake> batc up ?
[09:32] <craag> yep :)
[09:32] <garymortimer> cool
[09:32] <craag> http://batc.tv/streams/m0rpi
[09:32] <garymortimer> pubs for current predictions shown tad tricky
[09:34] <garymortimer> Now more sensible ;-)
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[09:38] <SpacenearUS> New vehicle on the map: 03EOS_T2 - 12http://tracker.habhub.org/#!qm=All&q=EOS_T2
[09:38] <daveake> try 6m/s up 4.5m/s down burst 29.5km
[09:39] <M0XIN> Looks a tad breezy
[09:40] <garymortimer> does indeed
[09:46] <day> im trying to wrap my head around this. If i put enough helium into a latex weatherballoon that it starts rising up, isn't it inevitably going to rise up until it pops?
[09:46] <fsphil> 1280x960. nice
[09:46] <fsphil> day: not always
[09:47] <day> fsphil: i was thinking, if it rises it will expand due to lower atmospheric pressure > which induces more rise > which induces more expansion
[09:47] <fsphil> if it rises slowly, the latex may have enough strength to stop the expansion of the helium
[09:48] <fsphil> the ascent rate is pretty constant
[09:48] <garymortimer> lots of flights end up out in that area, there really ought to be a UKHAS pub guide to it
[09:48] <fsphil> some flights do speed up as they ascend
[09:48] <day> fsphil: so my assumption is the general outcome of such an experiment?
[09:49] <ibanezmatt13> is it anything to do with how as you go up the pressure/density drops so the buoyancy force gets less and closer to the weight of the whole thing?
[09:50] <day> that means only foil balloons can be used for long flights, because they do not expand past a predefined voluminum?
[09:51] <fsphil> larger latex balloons can be made to float, but usually only for a few days max
[09:51] <fsphil> I've had a few flights float for about 24 hours
[09:51] <craag> ibanezmatt13: assuming that the balloon expands without exerting extra compressive force on the gas, the buoyancy force doesn't change.
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[09:52] <day> fsphil: because they ascended so slowly that they didnt hit the critical height? Or were they able to create an equilibrium?
[09:52] <fsphil> the latex never gets pushed past its stretch limit
[09:52] <ibanezmatt13> hm I see
[09:52] <craag> However of course there will start to be some compression, and although air drag reduces, the balloon gets larger and less aerodynamic..
[09:52] <day> oh i assumed that
[09:53] <craag> This engineering with numbers is opinion of course ;)
[09:53] <craag> *without
[09:53] <ibanezmatt13> :P
[09:53] <fsphil> totally :)
[09:53] <garymortimer> i think Dave is off
[09:53] <chimpusmaximus> We have lift off
[09:54] <fsphil> I'll be doing a floater flight again sometime
[09:54] <fsphil> though all my flights seem to happen in winter
[09:54] <fsphil> and winter is coming
[09:54] <day> :P
[09:55] <fsphil> a zero pressure latex balloon would be interesting to try
[09:55] <craag> zero pressure are the ones with a hole in the bottom?
[09:56] <fsphil> yea
[09:56] <fsphil> the lifting gas expands downwards
[09:56] <craag> mm, cool
[09:57] <fsphil> latex probably don't make much sense though, the material doesn't need to stretch
[09:57] <day> can you make sure that the downside stays down during strong wind?
[09:57] <fsphil> just needs to be big already
[09:57] <fsphil> weight of the payload should do that
[09:57] <day> ive no idea how much weight it would take
[09:58] <craag> Making your own envelope for that should be quite easy
[09:58] <craag> none of the superpressure stresses
[09:58] <fsphil> yea. just make a long tube
[09:58] <day> making the balloon should be simple as well
[09:59] <fsphil> can be sealed up for filling
[09:59] <fsphil> would need a nice calm day
[10:00] <chimpusmaximus> Love the size of the ssdv images
[10:00] <fsphil> it's a nice change from 320x240 :)
[10:00] <chimpusmaximus> yep
[10:01] <garymortimer> First pub recommendation, looks like reasonable beer on tap with large grass area in front to setup antennas and command and control infrastructure http://www.brisleybell.co.uk/
[10:03] <garymortimer> Whats with the South African callsign!! ZSTWH
[10:04] <M0XIN> !dials
[10:04] <M0XIN> er
[10:04] <fsphil> is that a callsign? no numbers in it
[10:05] <craag> garymortimer: How's your pub knowledge in the hampshire area?
[10:05] <garymortimer> Ah well now I used to live there so....
[10:06] <craag> excellent :D
[10:06] <garymortimer> My fave is the Milburys and its well
[10:06] <craag> potential upcoming launch ;)
[10:06] <fsphil> interesting how the missing packets have less of an effect on the large image
[10:06] <fsphil> they tend to blend in
[10:06] <garymortimer> Yeah its an aircraft tail number down here
[10:07] <fsphil> ah, I was thinking amateur radio callsign.
[10:07] <dbrooke> Oh, wasn't paying attention there and slow to tune in to the RTTY. The LoRa sorted itself out.
[10:07] <craag> oh rtty flight??
[10:07] <craag> lora even
[10:07] <craag> need to get the websdr rx going...
[10:08] <fsphil> I had the airspy setup at home, but my internet's gone down
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[10:08] <fsphil> typical
[10:08] <Herman_> !flights
[10:08] <SpacenearUS> 03Herman_: Current flights: 03SP3OSJ 144.7MHz RTTY 100bd 450/7n2 10(b234), 03RPI Test Flight 10(7795), 03RAJ-2 launch 10(2df6)
[10:08] <garymortimer> is the sstv lora
[10:08] <Geoff-G8DHE> !flights
[10:08] <SpacenearUS> 03Geoff-G8DHE: Current flights: 03SP3OSJ 144.7MHz RTTY 100bd 450/7n2 10(b234), 03RPI Test Flight 10(7795), 03RAJ-2 launch 10(2df6)
[10:08] <fsphil> garymortimer: seems to be ssdv going over both rtty and lora
[10:08] <Geoff-G8DHE> !flight7795
[10:08] <fsphil> assuming the larger images are through lora
[10:08] <Geoff-G8DHE> !flight 7795
[10:08] <SpacenearUS> 03Geoff-G8DHE: Flight 10(7795): 03RPI Test Flight 10(2 payloads) - Launch date 03Today at 11:00 from 03Cambridgeshire, UK 10(52.2135,0.0964)
[10:09] <Geoff-G8DHE> !dial 7795
[10:09] <SpacenearUS> 03Geoff-G8DHE: Latest dials for 03RPF-PITS-LoRa 10(7795): none
[10:09] <SpacenearUS> 03Geoff-G8DHE: Latest dials for 03RPF-PITS 10(7795): 03434.60295 MHz, 434.6026 MHz, 434.603 MHz
[10:09] <Herman_> freq of RPF ????
[10:09] <M0XIN> Payload ID RPF-PITS, 434.600MHz, 300 baud, 8 N 2. Telemetry and SSDV
[10:09] <Geoff-G8DHE> Its 3KHz high
[10:09] <fsphil> that large image is great
[10:10] <chimpusmaximus> Just picking up LoRa in Peterborough
[10:10] <M0XIN> Hmmm
[10:10] <M0XIN> I'm getting garbage on the decode
[10:10] <M0XIN> Autoconfigure checks out though
[10:10] <fsphil> ssdv will appear as garbage text
[10:10] <fsphil> but you should still see the normal $$ strings every so often
[10:11] <M0XIN> gotcha
[10:11] <Geoff-G8DHE> !payload 7795
[10:11] <SpacenearUS> 03Geoff-G8DHE: Payload 03RPF-PITS-LoRa 10(7795) 03$$RPF-PITS-LoRa - no transmissions
[10:11] <SpacenearUS> 03Geoff-G8DHE: Payload 03RPF-PITS 10(7795) 03$$RPF-PITS - 03Primary - 03434.6 MHz USB 03RTTY 300/600Hz ASCII-8 none 2
[10:11] <garymortimer> doe FL decode the lors or do you need a module??
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[10:12] <Whiteg6> !flights
[10:12] <SpacenearUS> 03Whiteg6: Current flights: 03SP3OSJ 144.7MHz RTTY 100bd 450/7n2 10(b234), 03RPI Test Flight 10(7795), 03RAJ-2 launch 10(2df6)
[10:13] <Geoff-G8DHE> is the ZSTWH on the tracker ?
[10:13] <chimpusmaximus> :-) my First proper LoRa decode
[10:13] <Herman_> fl-digi autoconfig is working ??
[10:14] <fsphil> garymortimer: it's a proprietary mode, requires the hardware module sadly
[10:14] <craag> websdr lora gateway: ONLINE :)
[10:14] <fsphil> how does the gateways handle ssdv packets?
[10:14] <UpuWork> heh
[10:14] <fsphil> uploaded to habhub?
[10:15] <chimpusmaximus> Yes
[10:15] <fsphil> still only showing a single station for the large images
[10:15] <chimpusmaximus> I think a lot of mine are failing crc
[10:16] <Geoff-G8DHE> ZSTWH on SSDV where is is it, im confused ?
[10:16] <garymortimer> I thought so, I have a couple here they are the future!
[10:16] <mattbrejza> does the gateway tell you the frequency offset of the lora signal?
[10:16] <fsphil> I hope not :) at least, not until it's fully reverse engineered
[10:16] <mattbrejza> 20kHz is quite sensitive to frequency mismatches
[10:16] <fsphil> I'd rather use something that's free to implement ourselves
[10:16] <Herman_> 434.603 very strong but no decode in fl-digi-hab
[10:17] <M0XIN> Same here
[10:17] <M0XIN> Although I have a fair amount of local QRM here
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[10:19] <Herman_> yes now decod
[10:19] <craag> I'm getting ssdv packets
[10:20] <chimpusmaximus> Looking at it i assume the callsigns shown on ssdv on LoRa images don't show the actual reciever?
[10:20] <craag> but not showing callsign on ssdv.
[10:20] <Geoff-G8DHE> Is ZSTWH the Cambridge flight RPI or something ?
[10:21] <chimpusmaximus> Geoff-G8DHE: Yes as far as i understand
[10:21] <dbrooke> I'm uploading SSDV from LoRa as far as I know, but my callsign isn't showing so I guess it must be using the payload callsign
[10:21] <dbrooke> SSDV Packet, Callsign ZSTWH, Image 9, Packet 17, 7 Missing
[10:23] <craag> It's an error in the code
[10:23] <dbrooke> mattbrejza: Dave's gateway code does show offset and I added AFC so it can tune itself
[10:23] <mattbrejza> oh ok
[10:24] <mattbrejza> but perhaps chimpusmaximus 's lora reciever isnt AFC'ing
[10:24] <craag> fsphil: ?callsign= on sanslogic/ssdv/data.php
[10:24] <M0XIN> Still no decodes
[10:24] <craag> what callsign is that meant to be?
[10:24] <M0XIN> Loud and clear though
[10:24] <garymortimer> I still say this is a great place to wait http://www.brisleybell.co.uk/ Dave
[10:24] <chimpusmaximus> AFC on and seems to be working, my antenna is far from ideal
[10:24] <craag> https://github.com/PiInTheSky/lora-gateway/blob/master/gateway.c#L599 sends the payload callsign
[10:24] <mattbrejza> what throughput is this lora?
[10:25] <Geoff-G8DHE> Ah right starting to get TTY decode but nothing on LoRa yet odd
[10:25] <craag> unlike https://github.com/PiInTheSky/lora-gateway/blob/master/gateway.c#L557
[10:27] <Geoff-G8DHE> Ah right they are using a different callsign for SSDV from telemetry!
[10:28] <dbrooke> the AFC could do with a bit more hysteresis, I should probably make it bandwidth dependent too
[10:29] <fsphil> craag: callsign is the receiver
[10:30] <fsphil> it gets the payload name from the packet
[10:30] <craag> fsphil: That's what I thought :)
[10:30] <fsphil> see you've fixed it
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[10:30] <fsphil> your callsign showing up nicely
[10:30] <craag> I've fixed and dave has a pull req ;)
[10:30] <dbrooke> Geoff-G8DHE: I have the LoRa a bit high, try tuning up a bit with 'd' so the AFC can capture it
[10:30] <mattbrejza> yea ive found the afc can go haywire sometimes
[10:32] <craag> https://github.com/PiInTheSky/lora-gateway/pull/3
[10:32] <craag> ^^ This fixes ssdv callsign for lora upload
[10:32] <dbrooke> I tested the AFC with a slow mode which also had gaps between packets so this is its first real test
[10:32] <fsphil> it appears to be sending ground images
[10:32] <fsphil> with the same numeric ID?
[10:33] <fsphil> that's a it odd
[10:33] <fsphil> bit*
[10:35] <mattbrejza> sometimes the lora module reports somewhat dodgy offset values
[10:37] <Herman_> i rcvd lot of data but see not yet a picture
[10:38] <Herman_> al data is green
[10:42] <Herman_> http://i.sigio.nl/ee9c42f5d79004d5e4721df71611c7ef.jpg
[10:42] <dbrooke> mattbrejza: I've not noticed that. I could also add a sanity check and rolling average as it should only need to handle a slow drift.
[10:42] <mattbrejza> so this is the image fldigi was just decoding, but it isnt on ssdv.habhub http://imgur.com/kazDQn7
[10:43] <mattbrejza> note tjats image 0x0A (10), but 10 on ssdv is different, and screwed up
[10:43] <fsphil> that's a collision of two images
[10:43] <fsphil> with the same resolution, callsign and image id
[10:44] <mattbrejza> so did the payload send id 0x0A twice?
[10:44] <fsphil> seems to have yea
[10:45] <fsphil> maybe lora and rtty are re-using IDs
[10:45] <dbrooke> they are
[10:45] <mattbrejza> ah yes
[10:45] <fsphil> should probably have different callsigns
[10:45] <fsphil> or interleaved image IDs
[10:47] <dbrooke> lora is now up to SSDV Packet, Callsign ZSTWH, Image 26, Packet 24, 19 Missing
[10:49] <Geoff-G8DHE> Ah on the gateway you can't control the Freq. once AFC has jumped in on EITHER channel :-(
[10:50] <craag> I've switched off AFC and set freq to 424.4025
[10:50] <craag> Freq Error = -0.0 KHz :)
[10:51] <mattbrejza> lets wave my lora rx around and see what i get
[10:51] <mattbrejza> using a shitty antenna though
[10:51] <craag> \o
[10:51] <craag> /o
[10:52] <dbrooke> Geoff-G8DHE: it should still tune, but AFC will still kick in unless switched off
[10:52] <mattbrejza> actually might wait for some more altitude
[10:52] <Geoff-G8DHE> dbrooke, Here its ignoring the kbd totally
[10:52] <garymortimer> More importantly it looks like the pub at Whissonsett marked on the OS just up the way from current landing positions has closed
[10:53] <garymortimer> http://www.whissonsett.com/village_history/
[10:54] <dbrooke> Geoff-G8DHE: Hmm, it works for me.
[10:55] <Geoff-G8DHE> perhaps its different version of code ?
[10:57] <dbrooke> only differences I have from Dave's master is craag's fix and increased AFC hysteresis
[10:58] <Geoff-G8DHE> Once a channel is showing something I loose control
[10:59] <Geoff-G8DHE> on both channels
[11:03] <dbrooke> Well I only have one channel but don't think that should make any difference
[11:03] <Herman_> so i am writing a while funcube now agn back to RPI
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[11:05] <garymortimer> I wonder why Dave did'nt go up the 1065
[11:05] <mattbrejza> http://www.esa.int/Our_Activities/Space_Science/Rosetta/Highlights/Boundary_conditions
[11:06] <garymortimer> I live in Rosetta, oh no thats a different place https://www.google.co.za/maps/place/Rosetta/@-29.3043305,29.98493,15z/data=!3m1!4b1!4m2!3m1!1s0x1ef3fa8101a3c76f:0x312cb6533d7f3d05
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[11:07] <jokke_> :)
[11:07] <jokke_> hi everyone o/
[11:09] <Vaizki> garymortimer, well then you'll have PS-46 buzz you soon :)
[11:10] <garymortimer> yeah an amazing flight
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[11:12] <garymortimer> Only a pop up pub at Mileham (current landing ish) http://www.edp24.co.uk/news/pop_up_pub_at_mileham_village_hall_aims_to_revive_social_spirit_1_2813181 looks like there needs to be pub free landing danger areas marked on charts as well
[11:14] <garymortimer> Lets hope it can make it to the Brisley Bell and its open
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[11:21] <ok1cdj> hi
[11:22] <ok1cdj> please look for RAJ-2 434.690
[11:23] <chimpusmaximus> Back receiving LoRa after fudging yagi in front garden
[11:25] <fsphil> it's a bit hit and miss
[11:26] <garymortimer> Can we see the sea yet (yes in 51)
[11:26] <Vaizki> raj-2 is a floater?
[11:29] <fsphil> yea the coastline is showing in a few
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[11:29] <fsphil> very patchy cloud on the south coast today
[11:30] <PE2G> What's the orange tube in RPF-PITS's pics?
[11:30] <fsphil> antenna support maybe
[11:30] <ok1cdj> yes, raj-2 is floater
[11:30] <ok1cdj> ultralight, payload only 7.5g and foil balloon
[11:31] <ok1cdj> but is powered only from solar
[11:31] <ok1cdj> no battery..
[11:31] <garymortimer> Second pub prediction for Dave (he did ask) http://www.longhamwhitehorse.co.uk/
[11:32] <garymortimer> In fact that and the Brisley Bell are the only two worth a look in the area I think and I don't think the Bell is open from a refit yet. I have seen it was close in June
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[11:32] <Vaizki> ok1cdj, interesting
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[11:34] <SpacenearUS> New vehicle on the map: 03jr_chase - 12http://tracker.habhub.org/#!qm=All&q=jr_chase
[11:35] <garymortimer> pop
[11:36] <PE2G> garymortimer: did you notice the burst in the signal?
[11:36] <garymortimer> no just on the display
[11:37] <PE2G> I didn't notice it either
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[11:40] <chimpusm_> I do like the speed of the LoRa images
[11:40] <chimpusm_> only dropping one in 30 packets at moment
[11:40] <jokke_> http://www.kingsheadhotel.net/ this might be pretty close by as well ;)
[11:41] <garymortimer> Too early for the folk night though
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[11:44] <PE2BZ> !flights
[11:44] <SpacenearUS> 03PE2BZ: Current flights: 03SP3OSJ 144.7MHz RTTY 100bd 450/7n2 10(b234), 03RPI Test Flight 10(7795), 03RAJ-2 launch 10(2df6)
[11:44] <PE2BZ> !dial zstwh
[11:44] <SpacenearUS> 03PE2BZ: Can't find a flight doc matching your query
[11:44] <PE2BZ> !dial rpi-pits
[11:44] <SpacenearUS> 03PE2BZ: Can't find a flight doc matching your query
[11:44] <PE2BZ> !dial rpf-pits
[11:44] <SpacenearUS> 03PE2BZ: Latest dials for 03RPF-PITS 10(7795): 03434.603482 MHz, 434.603 MHz, 434.603444 MHz, 434.60312 MHz, 434.6026 MHz, 434.603483 MHz, 434.60333 MHz
[11:45] <PE2BZ> !dial rpf-pits-lora
[11:45] <SpacenearUS> 03PE2BZ: Latest dials for 03RPF-PITS-LoRa 10(7795): none
[11:45] <PE2G> PE2BZ: RPF-PITS on 434.604
[11:46] <PE2BZ> PE2G Thanks Frits. Had to check if my SDR-Play is on frequency ;-)
[11:47] <PE2G> PE2BZ: np. O3 is up.
[11:47] <PE2BZ> How should LORA have to look on the waterfall ? I see a 16 kHz broad carrier.
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[11:52] <PE2G> PE2BZ: this screenshot was on this channel a while ago: https://dl.dropboxusercontent.com/u/367935/upu-lora-explained.png
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[11:55] <mattbrejza> oh that looks like my payload lol
[11:55] <mattbrejza> all of the lora modes...
[11:55] <PE2BZ> PE2G Tnx. Saw something that looked like it, but much weaker than the RTTY @434.600
[11:55] <fsphil> typo in that image
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[11:56] <fsphil> lora seems to be just a wide FSK mode. we could totally do better :)
[11:57] <Vaizki> umm lora is a chirp mode
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[11:58] <mattbrejza> probably QPSK with frequency hopping will work best
[11:58] <mattbrejza> with perhaps some feedback so i can avoid interference
[11:58] <Vaizki> the receiver locks on to the chirp "ramp" preamble which also allows lots of overlapping lora signals to be decoded
[11:58] <mattbrejza> *it
[11:58] <mattbrejza> if lora was multiuser it would be great
[11:58] <mattbrejza> but it isnt
[11:59] <mattbrejza> (and open etc)
[11:59] <Whiteg6> !flights
[11:59] <SpacenearUS> 03Whiteg6: Current flights: 03SP3OSJ 144.7MHz RTTY 100bd 450/7n2 10(b234), 03RPI Test Flight 10(7795), 03RAJ-2 launch 10(2df6)
[11:59] <Vaizki> what do you mean multiuser?
[11:59] <mattbrejza> you cant have two people using a frequency at the same time
[11:59] <mattbrejza> like with DSSS
[12:00] <Vaizki> well from what I understand you can especially if the chirp rates are different
[12:00] <Vaizki> i.e. different ramp speeds
[12:01] <mattbrejza> yea but i still not think its great, and there is only one chirp pattern per configuration
[12:02] <Vaizki> well I lack real world experience but I guess lora is really meant for infrequent short bursts of data
[12:03] <Whiteg6> Anyone Know what the $$$BARC RRTY is on 434.729 ?
[12:03] <garymortimer> jrchase could at least go and see if the pub is open!
[12:03] <mattbrejza> yea indeed
[12:04] <Vaizki> so do you think something like rc dsss radios would work out for hab telemetry?
[12:04] <PE2BZ> Whiteg6 at the west coast of the Netherlands no RTTY signal on 434.729
[12:04] <mattbrejza> perhaps not out of the box ones
[12:04] <mattbrejza> you would have to make custom stuff
[12:05] <Whiteg6> Cheers occasionally there is LAT/LON info and it puts it North of Sheffield
[12:06] <PE2BZ> If it[ height is continuous perhaps it´s a ¨to be launched¨ balloon, near you ?
[12:06] <fsphil> Whiteg6: they are http://sentintospace.com/
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[12:07] <Vaizki> mattbrejza, but DSSS usually has more than one symbol per bit, right? meaning we'd need a radio that can jump between frequencies extremely quickly
[12:08] <mattbrejza> dsss is fast bpsk (kinda)
[12:08] <Whiteg6> Getting proper info now altitude is 8000ish metres
[12:08] <mattbrejza> from a designing the tx point of view
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[12:08] <fsphil> a bit is many bits
[12:08] <fsphil> it's a neat system
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[12:09] <Vaizki> hmmh ok
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[12:10] <Whiteg6> cheers fsphil
[12:12] <Vaizki> ah so the DSSS signal would be formed by modulating the data signal with pseudo noise, then just analog mixing it onto a carrier without any bpf to produces a wide "DSB" signal?
[12:13] <fsphil> yea you'd have two sequences of pseudo random data, one represnting 0 and the other 1
[12:14] <fsphil> so you might be sending at 1000bit/s from the transmitters point of view
[12:14] <fsphil> but the symbols could be 1000 bits long, and the actual data rate is 1bit/s
[12:14] <Vaizki> right, and by using different sequences multiple users can coexist on the same spectrum
[12:14] <fsphil> exactly
[12:15] <Vaizki> I am a Futaba FASST user btw :)
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[12:15] <mattbrejza> also if done on a hab you could use it for 'reverse gps'
[12:16] <fsphil> I really want to try that
[12:16] <mattbrejza> i wonder if the 'txdone' signal from the lora modules is useable
[12:16] <mattbrejza> i suspect theres too much jitter in the signal
[12:16] <Vaizki> reverse gps? like trilateration?
[12:17] <fsphil> yea
[12:18] <jokke_> picked landing spot nicely ... as far away from any road as possible on the area ;)
[12:18] <fsphil> the fast rate the pseudo code is sent at makes it good for timing
[12:19] <fsphil> not sure what rate the GPS satellites use
[12:19] <Vaizki> I guess you can trilaterate just based on differences between successive receptions etc?
[12:19] <Vaizki> at least the FR24 receivers don't timestamp with GPS even though they have GPS built in
[12:19] <fsphil> you'd need a number of receive stations, each with accurate clocks to compare receive time against
[12:19] <mattbrejza> 1Mbit fsphil
[12:20] <fsphil> nice. could be tricky making a transmitter
[12:20] <Vaizki> fsphil, yea but FR24 doesn't do that for trilateration. I thought that was the obvious ToA way
[12:20] <fsphil> I wouldn't want to fly a hackrf
[12:21] <mattbrejza> well all you need is a DAC of a new MSPS and a IQ modulator
[12:21] <mattbrejza> *few
[12:21] <fsphil> this would still be ToA
[12:21] <Vaizki> I forget the specifics but I remember that FR24 doesn't timestamp received messages and doesn't care about the latency between receiver and server
[12:22] <fsphil> blitzortung record each RF spike from lightning and send that in along with the time since the last GPS PPS pulse
[12:22] <fsphil> that's probably as simple as a ToA system could get
[12:23] <Vaizki> yes, but you need to GPS timestamp at the receiver
[12:23] <Vaizki> in a sense
[12:23] <Vaizki> FR24 system doesn't need that but of course the transmitter has to move and planes move pretty fast
[12:24] <Vaizki> so each receiver will see different time deltas between transmissions
[12:25] <Vaizki> and they just use that to trilaterate positions.. if I remember correctly. prog knows the details, there was a long discussion of it on #airspy :)
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[12:31] <fsphil> I can imagine. could probably write a book on it :)
[12:37] <mattbrejza> you can really see the swinging of the balloon for the lora tracker
[12:38] <Vaizki> anyway, would be very advantageous if the receivers didn't have to have a GPS PPS signal coming in
[12:43] <fsphil> can't rely on doppler
[12:45] <fsphil> gps at the receiver is simple though
[12:46] <craag> and so cheap for the accuracy you get.
[12:47] <Vaizki> it's not doppler.. it's more like payload sends out 2 messages, 10 seconds apart.. receiver A sees them 10.0123s apart and B seems them 9.998s apart .. and send this info to the servers.
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[12:47] <Vaizki> so only a local clock is needed to track intervals instead of global gps clock
[12:48] <Vaizki> but probably the hab payloads are moving too slow to make it work.
[12:48] <craag> that is doppler in a way - just over a longer time period.
[12:49] <fsphil> yea, probably too slow. it's a neat trick though
[12:49] <craag> and relies on the balloon moving?
[12:49] <Vaizki> yes
[12:50] <craag> you couldn't get a position if it was too slow/still.
[12:50] <fsphil> they do sometimes go straight up and down
[12:50] <Vaizki> yes I know.
[12:50] <Vaizki> I'm not saying it's viable, just wondering out loud :)
[12:50] <fsphil> altitude accuracy will be pretty poor even for ToA with GPS :)
[12:50] <craag> fair enough, nice trick :)
[12:51] <Vaizki> with global GPS clock and ToA, you'd need to account for local latency somehow
[12:52] <fsphil> as long as you have the ToA relative to GPS time, network latency won't matter
[12:52] <Vaizki> if you are running windows with fldigi and random SDR and a random GPS.. how do you calibrate the arrival of the sentence and ppm
[12:52] <craag> you don't use fldigi
[12:52] <Vaizki> right
[12:52] <craag> do it in hardware/firmware
[12:52] <Vaizki> yea I was thinking airspy has a nice clock and gpio.. ;)
[12:52] <craag> yep :)
[12:52] <fsphil> you could do it with an airspy and in software if the gps pps signal could be included in what the airspy receives
[12:53] <craag> just need the processing onboard to trigger on the right pulse
[12:53] <craag> or that
[12:53] <fsphil> I think Darkside did that with an rtlsdr once?
[12:53] <Vaizki> airspy normally sends 12bit samples in 16bit words.. so there's a few bits left for pps etc ;)
[12:54] <fsphil> oh nice
[12:54] <Vaizki> easy modification to the firmware, just make ISR that flags the next packet for an extra bit
[12:54] <Vaizki> oops
[12:55] <Vaizki> forget that. it uses DMA from the ADC :(
[12:55] <Vaizki> so not as simple.. but the source is on github :)
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[13:01] <fsphil> shame there is no ISM band near the GPS frequencies
[13:16] <SpacenearUS> New vehicle on the map: 03KE7IGH-13 - 12http://tracker.habhub.org/#!qm=All&q=KE7IGH-13
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[13:55] <UpuWork> daveake says payloads recovered
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[13:58] <chimpusmaximus> Excellent
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[13:59] <jokke_> gratz for successful launch and recovery then ;)
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[14:25] Nick change: fl_0 -> fl_0|afk
[14:26] <Geoff-G8DHE> Anybody on who copied the LoRa this morning ? Which mode setting did you use ?
[14:27] <craag> Geoff-G8DHE: mode_1=1
[14:27] <Geoff-G8DHE> hum thats what I had but https://twitter.com/jrobinson_uk
[14:27] <chimpusmaximus> same except mode_0=1 as used diff socket on baord
[14:28] <craag> Geoff-G8DHE: ?
[14:28] <Geoff-G8DHE> arlook at the photo with the gateway setting he was using mode=0 ?
[14:29] <craag> not seeing any photos of settings Geoff-G8DHE
[14:29] <chimpusmaximus> Guess you mean ones from 15th jul on left
[14:29] <craag> ah found it
[14:29] <Geoff-G8DHE> Yup thoise can't find a link specific
[14:30] <Geoff-G8DHE> both on the gateway and the Pi ....
[14:30] <craag> Geoff-G8DHE: Dave replied: "@jrobinson_uk Change to mode 1 if you want to send SSDV over LoRa"
[14:30] <craag> 22 hours ago
[14:30] <craag> The announcement email thread had the correct settings
[14:31] <Geoff-G8DHE> OK just saw the image just now and wondered, must be something else then at my end!
[14:32] <craag> I had: f=434.402, mode=1, afc=off
[14:32] <craag> Also EnableSSDV=Y
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[14:33] <chimpusmaximus> I was pretty impressed as normally i would have struggled with 300 baud for a similar fight. An i did not have an LNA running after killing it.
[14:33] <Geoff-G8DHE> Yup those were mine in essence, I think there might have been something else as it was ignoring the AFC & kbd commands after seeing first packet
[14:33] <Geoff-G8DHE> begginning to think it locked up after first packet
[14:34] <craag> Kbd commands didn't work for me either
[14:34] <Geoff-G8DHE> oh right
[14:34] <craag> afc only ran occasionally
[14:34] <craag> (when enabled)
[14:34] <chimpusmaximus> I had afc on and it seemed to do an ok job. Did not try manually adjusting anything
[14:34] <Geoff-G8DHE> previously it has worked fine so wasn't expecting nothing at all :-(
[14:35] <chimpusmaximus> :-(
[14:35] <chimpusmaximus> was the DIO0/5 set up ok?
[14:35] <craag> Did you get checksum failures, ot absolutely noithing?
[14:35] <Geoff-G8DHE> Think I'll have to make the second channel Tx then I can Rx my own.
[14:36] <Geoff-G8DHE> As soon as the Packet SNR and AFC line appeared it would freeze
[14:36] <chimpusmaximus> So almost like one packet?
[14:36] <Geoff-G8DHE> but it only did when there was a transmission
[14:36] <Geoff-G8DHE> yup a single packet and it seemed to freeze
[14:37] <craag> Mine wasn't interactive at all - but worked
[14:37] <Geoff-G8DHE> daveake, mentioned last night there was a problem and sent another set of files but that was the same as well
[14:38] <chimpusmaximus> only thing i can possibly add was that when working with Dave troubleshooting some issues i has sending from pits if dio0 was wrong then it only ever sent first packet, not sure if that would also be case for receiving.
[14:38] <chimpusmaximus> are you using one of the pi boards upu sells?
[14:39] <Geoff-G8DHE> don't think that was the situation, the ports haven't changed since it last worked on mattbrejza flight which used all modes
[14:39] <mattbrejza> SF6 might need something different though
[14:40] <chimpusmaximus> ok, just seen a fair few diff port configs depending on version of boards
[14:40] <craag> Geoff-G8DHE: Have you updated the firmware recently? to 4.0?
[14:40] <craag> (if you have, it would be worth checking that the SPI port still works)
[14:41] <Geoff-G8DHE> I updated to what dave sent last night so assumed that was most recent, as well as another copy which is the current git master, both behaved the same
[14:41] <craag> WEBSDR was running 4.0 and Dave's latest git though, so should have been fine
[14:41] <chimpusmaximus> Mine was running latest github version from last night
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[14:43] <chimpusmaximus> I had to change the DIO0 ports etc after installing as my version 2.3 board has ce0 as 6/5 and not 31/26
[14:44] <chimpusmaximus> and ce1 is 27/26
[14:44] <Geoff-G8DHE> I'm on 2.0 board
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[14:46] <chimpusmaximus> good chance then config is ok. Can only find 2.3 hardware details on github
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[14:56] <Neil__> fd
[14:56] <Neil__> Hi
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[15:09] <daveake> afternoon
[15:09] <Geoff-G8DHE> hi you got them all back ?
[15:09] <daveake> yup all good
[15:10] <daveake> 650m from the road
[15:10] <daveake> middle of a field of broad beans
[15:10] <Geoff-G8DHE> not so bad then, and your now full of beans!
[15:10] <chimpusmaximus> it looked at one pint like you drove into them
[15:10] <chimpusmaximus> pint/point
[15:10] <daveake> about 60% on the scale where maize is 100%
[15:11] <daveake> Norfolk needs to get 3G
[15:11] <garymortimer> Is that a boy band?
[15:11] <Geoff-G8DHE> found coverage elsewhere in the country is no bterr this year :-(
[15:11] <daveake> re comments above about the gateway yes you have to get DIO0/5 right
[15:11] <daveake> well DIO0
[15:12] <daveake> iirc DIO5 isn't used right now
[15:12] <daveake> if iDIO0 is wrong it will either get 0 packets or just 1, I think
[15:12] <Geoff-G8DHE> is there any code about using the gatweay in Tx mode ?
[15:13] <Geoff-G8DHE> might just double check that in a minute then
[15:13] <daveake> gateway doesn't tx
[15:14] <Geoff-G8DHE> it was just a thought as it would be easier to test then when you have two channels!
[15:15] <daveake> :)
[15:15] <daveake> make a tracker :)
[15:15] <daveake> anyway pub calls
[15:16] <Geoff-G8DHE> Might have to resort to that!
[15:16] <Geoff-G8DHE> enjoy!
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[15:17] <Geoff-G8DHE> nope DIO0=31/6 sp should be right
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[15:23] <dbrooke> I have the v2.3 board and chan 0 defaults to the correct settings but if I had chan 1 it looks like that would need overrides
[15:24] <dbrooke> that's on a B+
[15:24] <Geoff-G8DHE> How do you mean overrides ?
[15:25] <dbrooke> settings in the gateway.txt, rather than just leaving them out
[15:25] <Geoff-G8DHE> Oh yes have them all set excuse
[15:25] <Geoff-G8DHE> tracker=G8DHE
[15:25] <Geoff-G8DHE> EnableHabitat=Y
[15:25] <Geoff-G8DHE> EnableSSDV=Y
[15:25] <Geoff-G8DHE> LogTelemetry=Y
[15:25] <Geoff-G8DHE> CallingTimeout=30
[15:25] <Geoff-G8DHE> frequency_0=434.400
[15:25] <Geoff-G8DHE> mode_0=1
[15:25] <Geoff-G8DHE> DIO0_0=31
[15:25] <Geoff-G8DHE> DIO5_0=26
[15:25] <Geoff-G8DHE> AFC_0=Y
[15:25] <Geoff-G8DHE> frequency_1=434.400
[15:25] <Geoff-G8DHE> mode_1=1
[15:25] <Geoff-G8DHE> DIO0_1=6
[15:25] <Geoff-G8DHE> DIO5_1=5
[15:25] <Geoff-G8DHE> AFC_1=Y
[15:27] <dbrooke> hmm, for the v2.3 on a B+ it's DIO0_0=6 DIO5_0=5 DIO0_1=27 DIO5_1=26
[15:28] <dbrooke> so I assume you have a different version of something
[15:28] <Geoff-G8DHE> Mines a V2 board, that seems to match the examples
[15:30] <dbrooke> I don't know the history
[15:31] <Geoff-G8DHE> Me neither, the numbering was different I think mine are marked Ch1 and Ch2
[15:32] <dbrooke> the numbers I quoted above are printed on the v2.3 PCB
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[15:35] <UpuWork> the new boards have the DIO details on the silk
[15:36] <UpuWork> 2.3 CE0 = DIO0 6 DIO5 5
[15:36] <UpuWork> CE1 = DIO0 27 DIO5 26
[15:37] <ok1cdj> any contact for station which can track rtty in YO ?? RAJ-2 heading to YO now..
[15:37] <dbrooke> UpuWork: can you confirm Geoff-G8DHE's settings for the V2 board?
[15:37] <UpuWork> yeah 1 sec
[15:38] <Geoff-G8DHE> helps not to pull yur network cable out when plugging in the webcam!
[15:39] <garymortimer> IF PS 46 stays on track it will fly bob over my house
[15:41] <UpuWork> one module is on DIO0 = 6 DIO5 = 5
[15:42] <UpuWork> the other bear with me I find wpi->gpio confusing as hell
[15:42] <Geoff-G8DHE> yes they are rather aren't they!
[15:42] <UpuWork> DIO0 = 31 DIO5 = 26
[15:44] <Geoff-G8DHE> http://360.g8dhe.net/hab_flights/LoRa/index.php?ind=1
[15:44] <dbrooke> so that looks like what Geoof has if the latter one was chan 0
[15:45] <Geoff-G8DHE> its worked in the past, and pretty certain never needed or fiddled with the ports so bemused
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[15:47] <SpacenearUS> New vehicle on the map: 03SQ6KXQ_chase - 12http://tracker.habhub.org/#!qm=All&q=SQ6KXQ_chase
[15:47] <dbrooke> yep, me too
[15:52] Lunar_Lander (~kevin@p548885C6.dip0.t-ipconnect.de) joined #highaltitude.
[15:53] <Lunar_Lander> hello
[15:53] <craag> afternoon Lunar_Lander
[15:53] <Lunar_Lander> thanks
[15:53] <Lunar_Lander> how's life?
[15:53] <craag> Back from pluto already?
[15:54] <Lunar_Lander> :) ah not yet, tomorrow will be with good pictures :)
[15:54] <craag> I meant you, back from pluto to the moon (lunar)
[15:54] <craag> :P
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[15:55] <Lunar_Lander> ah right
[15:55] <mattbrejza> craag: hes still thre so thers a 9hr lag
[15:55] Nick change: Lunar_Lander -> Pluto_Visitor
[15:55] <Pluto_Visitor> thanks
[15:55] <mattbrejza> hes actually answering yesdurdays irc questions
[15:55] <Pluto_Visitor> :D
[15:55] <mattbrejza> (well this morning
[15:55] <craag> lol mattbrejza
[15:55] <Pluto_Visitor> XD
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[16:00] SP6RYD (3e57f887@gateway/web/freenode/ip.62.87.248.135) joined #highaltitude.
[16:00] <SP6RYD> Hi
[16:00] <SP6RYD> RAJ-2 QRG ?
[16:02] garymortimer (9a49dfc7@gateway/web/freenode/ip.154.73.223.199) left irc: Ping timeout: 246 seconds
[16:03] <ok1cdj> 434.690 +/- drift
[16:04] malgar (~malgar@adsl-ull-198-55.49-151.net24.it) left irc: Ping timeout: 260 seconds
[16:04] <ok1cdj> sp6ryd but now is near your horizont..
[16:05] <SP6RYD> Yes, I know to late ;)
[16:05] <SP6RYD> despite QRL :(
[16:08] <ok1cdj> yes.. but all going ok... is only solar powered, no battery...
[16:08] <SP6RYD> signal is still audiable and visable but no decode to many local QRM from short range devices
[16:11] <ok1cdj> maybe you can copy CW
[16:11] <SP6RYD> http://i.gyazo.com/08bd174fe125d6c697ccc4756984490f.png
[16:12] <ok1cdj> great is over 300 km from you...
[16:13] Swecobran (~rooms@78-70-253-95-no149.tbcn.telia.com) joined #highaltitude.
[16:13] <SP6RYD> the best of decoding : "$$%$RAJ-2,1873,16:]04,4<.776501,2001563,08966038,2>5v$\,12bBl35F|"
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[16:32] <SP6RYD> qutt
[16:32] <SP6RYD> QUIT
[16:34] SP6RYD (3e57f887@gateway/web/freenode/ip.62.87.248.135) left irc:
[16:35] <daveake> Geoff-G8DHE The current gateway code defaults DIO5/0 to the ones on the production LoRa boards
[16:35] <daveake> Unfortunately, and I blame Upu ofc, prototype boards had different pin allocations
[16:35] <daveake> so earlier gateway code had different defaults
[16:39] <Upu> Geoff-G8DHE mail me at work I'll send you a new one
[16:40] <Upu> Not till Monday as I'm on hols now
[16:40] <Geoff-G8DHE-M> Ah right so the code has changed for the new boards has it!
[16:40] <daveake> yeah
[16:41] <Upu> we'd put one of them on a reserved pin
[16:41] <Upu> "we"
[16:41] <daveake> :)
[16:41] <Geoff-G8DHE-M> can it not be overridden from the gateway.txt file ?
[16:41] <daveake> yes
[16:41] <daveake> DIO0_1=
[16:41] <daveake> etc
[16:41] <Geoff-G8DHE-M> yes I've always had them set
[16:42] <daveake> tbh if I wasn't so lazy I could get the code to check what DIO0/5 are connected to
[16:42] <daveake> James (Pi bloke) had the wrong settings
[16:42] <daveake> and it behalyved very strange
[16:42] <daveake> like my typing
[16:44] <Geoff-G8DHE-M> Ah I'll see if I can refer backwards and see if it hs changed then, that might explain it I sort of assumed that if specified in the file it would match the board
[16:44] <SpacenearUS> New vehicle on the map: 03KC9LHW-11 - 12http://tracker.habhub.org/#!qm=All&q=KC9LHW-11
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[16:44] <SpacenearUS> New vehicle on the map: 03KC9LIG-11 - 12http://tracker.habhub.org/#!qm=All&q=KC9LIG-11
[16:47] <Geoff-G8DHE-M> Upu, OK I'll drop you a note in due course if I can't get it to function!
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[16:58] <ok1cdj> anyone hearing RAJ-2 now ??
[17:00] <daveake> <Geoff-G8DHE> [14:33:34] Yup those were mine in essence, I think there might have been something else as it was ignoring the AFC & kbd commands after seeing first packet
[17:00] <daveake> Yes that's definitely wrong DIO settings; I've seen exactly the same
[17:19] <Upu> !track RAJ-2
[17:19] <SpacenearUS> 03Upu: Here you go - 12http://tracker.habhub.org/#!qm=All&q=RAJ-2
[17:20] <Upu> bit far out for me :)
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[17:58] Nick change: fl_0|afk -> fl_0
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[18:08] <SA6BSS-Mike> ok1cdj: http://ready.arl.noaa.gov/hypubout/146616_trj001.gif prediction on RAj
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[18:09] <ok1cdj> thanks mike
[18:09] <ok1cdj> i think that was lost in thunderstorm
[18:10] <ok1cdj> over slovakia
[18:10] <SA6BSS-Mike> ahh, ok
[18:14] <SA6BSS-Mike> runnig a solar experiment here to, a lithium AAA bat in paralell with 3 solar panels hopefully it will survive night nr 2 on the battery, I´l now tomorrow :)
[18:18] <Geoff-G8DHE-M> daveake, Are the board files available for the version 2.0 board ? Can't see them on github :-(
[18:18] <Upu> sec Geoff-G8DHE
[18:18] <Geoff-G8DHE-M> OK nps
[18:18] <Upu> https://www.dropbox.com/s/6n02b3tmyyzrtrf/PiLoraGatewayV2.brd?dl=0
[18:18] <Upu> https://www.dropbox.com/s/ocu6do7c3kigqdd/PiLoraGatewayV2.sch?dl=0
[18:18] <Geoff-G8DHE-M> ah ha
[18:18] <Upu> I never put them on github
[18:18] <Upu> as I never officially released those
[18:19] <Upu> You were an early adopter/beta tester :)
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[18:19] <Geoff-G8DHE-M> Oh ok only the .sch files just wanted to see where the i/o pins went so was hping fpr the .pdf are they there as well ?
[18:20] <Geoff-G8DHE-M> nope
[18:20] <Upu> want a PDF ?
[18:20] <Geoff-G8DHE-M> prefer I don't have eagle or whatever
[18:21] <Pluto_Visitor> hello
[18:22] <Geoff-G8DHE-M> evening
[18:22] <Pluto_Visitor> had an important observation today
[18:22] <Pluto_Visitor> used the attiny841 with the arduino IDE
[18:22] <Geoff-G8DHE-M> ?
[18:23] <Pluto_Visitor> and I wanted to use the ADC
[18:23] <Pluto_Visitor> if you want to use the pins as analogue, the enumberation is totally different to the arduino enumberation
[18:23] <Pluto_Visitor> i.e. "pin 3" is "pin A9" on analogue
[18:24] <Geoff-G8DHE-M> ah you mean like just LoRa boards between versions ;-)
[18:24] <Pluto_Visitor> :)
[18:24] <Upu> https://www.dropbox.com/s/ocu6do7c3kigqdd/PiLoraGatewayV2.sch?dl=0
[18:24] <Geoff-G8DHE-M> .sch again ?
[18:25] <Upu> eh
[18:25] <Upu> https://www.dropbox.com/s/9uu0lyxjbfy3u1l/PiLoraGatewayV2.pdf?dl=0
[18:25] <Upu> sorry
[18:25] <Geoff-G8DHE-M> :)
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[18:26] <Geoff-G8DHE-M> ight I can compare that with the 2.4 version now and se what needs chaging Thanks
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[19:00] <arjunnaha> ping daveake
[19:01] <daveake> pung
[19:01] <arjunnaha> Quick question about the PITS+ board, if I were to add external sensors, where is the data stored? Is it passed to habhub or is it stored on the Pi
[19:02] <daveake> sent to habhub, and stored too if you ask it to log telemetry to the sd card
[19:03] <arjunnaha> does habhub display it in graph form?
[19:03] <arjunnaha> just using it for classroom stuff
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[19:07] <daveake> For live graphs, x-f has a great site that does that.
[19:07] <daveake> Can't remember the URL sorry
[19:08] <arjunnaha> ok, cheers ;)
[19:10] <daveake> also you can grab as csv for example from habhub
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[19:11] <arjunnaha> ah, perfect. One word. Excel
[19:16] <daveake> perfect and excel in the same sentence ?
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[19:19] <SA6BSS-Mike> http://x-f.lv/dev/habitat-graphs/payload/
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[19:25] <daveake> cheers :)
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[19:26] <arjunnaha> Thanks
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[19:39] <arjunnaha> daveake: how many i2c sensors would you be able to attach to the board?
[19:44] <daveake> they all need unique addresses
[19:44] <SpeedEvil> Or an expander
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[19:46] <jet__> Just a quick question, how do you fill out the 'OS Grid ref' part of the CAA form?
[19:46] <jet__> I have a grid reference number of ST 66954 68233
[19:47] <jet__> Are the eastings and northings the ones without decimal points? What is the map number and grid letters?
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[19:53] <SpacenearUS> New position from 03KK6UUQ-1 after 0312 hours silence - 12http://tracker.habhub.org/#!qm=All&q=KK6UUQ-1
[19:58] <daveake> http://gridreferencefinder.com/
[19:58] <daveake> About time the CAA accepted GPS coords
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[19:59] <jet__> Yeah I've been using that site.
[19:59] <jet__> None of it makes any sense
[19:59] <jet__> The form wants the easting and northing to 3 fig.
[20:00] <jet__> When I do that and re-search those into the system, they come up in the atlantic ocean
[20:00] <jet__> Also I've got no clue what the map number and grid letters are
[20:00] <daveake> for 3 figs you take the first 3
[20:00] <jet__> Yeah, and I rounded up the third because the fourth was greater than or equal to 5
[20:01] <daveake> yeah
[20:01] <jet__> But I re-searched those 3 figure easting and northings into the same website. The result was somewhere in the atlantic.
[20:01] <daveake> and you don't need a real map - just get the OS one up on bing and take a screenshot
[20:01] <mattbrejza> just read them off the OS map?
[20:02] <jet__> ik. I'm going to screenshot it off bing
[20:02] <mattbrejza> remember your gcse geography ;)
[20:03] <jet__> As I'm aware, bing OS maps hasn't got any facility for me to read the co-ords.
[20:04] <jet__> I just put in the post code into gridreferencefinder.com
[20:04] <jet__> It gave me a grid reference ST 66954 68233 Eastings 366954 Northings 168233
[20:04] <mattbrejza> its written on the maps (but yes, im sure that website is easier)
[20:04] <daveake> try http://www.ordnancesurvey.co.uk/gps/transformation
[20:05] <Laurenceb_> go PS-46
[20:06] <jet__> I took the first 3 fig of those easting and northings, so Eastings 367 and Northings 168
[20:06] <jet__> If you search those 3 fig values, they give you a value in the Ocean, a long way off mainland UK.
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[20:11] <jet__> And I have no idea what the Map No. and Grid Letters are
[20:11] <jet__> All I have is ST 66954 68233
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[20:25] <Geoff-G8DHE> You have mixed up the XY co-ords with the Eastings Northings, drop the first digit of the XY they represent the ST of the OS Maps the Next 3 digits of each is the Eastings and Northings
[20:26] <Geoff-G8DHE> So ST 667 682
[20:27] <jet__> So So what is the ST?
[20:27] <Geoff-G8DHE> Corrctio ST 670 682 ST is the OS sheet map square.
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[20:28] <jet__> So what is the eastings and northings 3 fig?
[20:29] <Geoff-G8DHE> ST is the 100Km OS square followed by Eastings 670 and Northings 682
[20:29] <Geoff-G8DHE> this gives a location just to the SE of Bristol Keynsham
[20:30] <jet__> But inputting eastings 670 and northings 682 into the site gives a location in the atlantic
[20:31] <Geoff-G8DHE> No your confused Eastings is just a term to indicate units to the EAST and Northings units to the North,
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[20:32] <jet__> So the 3 fig eastings is 670 and northings is 682?
[20:32] <Geoff-G8DHE> on the map you used they replaced the ST with the matching number of Kms 3 and 1 so OS map ST= 3 1 followed by the remaing 3 digits East and North
[20:33] <jet__> Ok, so eastings 670 and northings 682
[20:33] <Geoff-G8DHE> Yes and MAP square ST
[20:33] <jet__> Map no. it says?
[20:33] <jet__> And grid letters
[20:34] <Geoff-G8DHE> grid letters same thing ST
[20:34] <jet__> So I put ST as grid letters?
[20:34] <jet__> What is the Map No.?
[20:35] <Geoff-G8DHE> if you look up the paper maps they have a number that is 172 I think for Bristol
[20:35] <Geoff-G8DHE> https://www.google.co.uk/search?q=os+map+numbers&num=100&newwindow=1&safe=off&tbm=isch&imgil=iLgCoBE9S3TRUM%253A%253BTThSRmz7J1tV3M%253Bhttp%25253A%25252F%25252Fwww.cassinimaps.co.uk%25252Fshop%25252FmaplinksPE.asp&source=iu&pf=m&fir=iLgCoBE9S3TRUM%253A%252CTThSRmz7J1tV3M%252C_&biw=1244&bih=1046&usg=__uUfW-ngGhSfGEblPaNDfnoLEAdU%3D&ved=0CE4QyjdqFQoTCMqap5_A4MYCFcI9FAod1VUFqw&ei=nxWoVYrPAcL7UNWrldgK
[20:35] <Geoff-G8DHE> #imgrc=iLgCoBE9S3TRUM%3A&usg=__uUfW-ngGhSfGEblPaNDfnoLEAdU%3D
[20:35] <jet__> Ok.
[20:36] <jet__> Thank you!
[20:36] <jet__> How do they not have any instruction on this?
[20:36] <Geoff-G8DHE> http://www.cassinimaps.co.uk/shop/uploads/popular/POPavailableAll.gif
[20:36] <jet__> Thank you so much
[20:36] <jet__> I've now filled out the form lol
[20:36] <Geoff-G8DHE> If your usding paper maps they have a write up on the cover!¬
[20:37] <jet__> I am going to buy a paper map I think as well
[20:37] <jet__> I have just been using bing :\
[20:37] <jet__> Thank you very much for your help
[20:37] <Geoff-G8DHE> On the tracker select OS map from the dropdown, but its difficult to read the grid numbers etc.
[20:38] <jet__> Yes that's what I've been doing
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[20:38] <jet__> Thanks so much for your help
[20:38] <jet__> You should see the HERMES launch on the calendar in late august
[20:39] <jet__> I have to go now, cheers again and I'll be able to do it myself in future :D
[20:39] <Geoff-G8DHE> nps
[20:39] <jet__> bye!
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[21:00] <qyx_> mhm, how old is PS-46?
[21:03] <Geoff-G8DHE> Click the red line at the Launch site and Time: 2015-05-23 01:22:00
[21:04] <qyx_> ah, nearly 2 months
[21:05] <Vaizki> eeep I proudly demonstrated my Avo clamp meter as a made in britain item but it says made in West Germany on the back
[21:05] <Vaizki> what is this madness!
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[21:30] <Pluto_Visitor> http://pluto.jhuapl.edu/Multimedia/Science-Photos/image.php?gallery_id=2&image_id=233 new image
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[00:00] --- Fri Jul 17 2015