highaltitude.log.20130518

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[02:18] <heathkid> does anyone have a link to a photo of how to attach a regular parachute between the payload and the balloon?
[02:19] <heathkid> or do I just hang it off the side of the payload?
[02:19] <heathkid> no cutdown on this one...
[02:20] <heathkid> kaymont 600 w/ a 250g payload
[02:20] <heathkid> fast ascent to burst
[02:20] <heathkid> ...and at this point I may have to add ballast to get up to 250g payload. :)
[02:21] <heathkid> ballast meaning 3 AA's instead of 2AA lithiums
[02:21] <heathkid> I'm still not sure I'll even get to 100g
[02:21] <heathkid> but haven't built the enclosure yet
[02:22] <heathkid> haven't weighed the paraschute
[02:22] <heathkid> so much to do...
[02:25] <Randomskk> in genral
[02:25] <Randomskk> general
[02:25] <Randomskk> just tie the parachute to the main flight train
[02:25] <Randomskk> it's better if your parachute has an attachment point at the apex
[02:25] <Randomskk> then it can be in the load bearing path, which generally means it'l be closed until descent
[02:26] <Randomskk> but if you don't, just tie it to the flight train
[02:26] <heathkid> how?
[02:26] <Randomskk> a knot?
[02:26] <heathkid> I just learned about the Spherachutes
[02:26] <Randomskk> 1/3 of the way between the payload and balloon is good
[02:26] <Randomskk> so balloon remains can swing down to hang below without tangling stuff
[02:26] <Randomskk> or do I mean 2/3...
[02:26] <Randomskk> well anyway
[02:26] <heathkid> and how far between the payload and balloon?
[02:27] <heathkid> that'd be 1/3
[02:27] <Randomskk> 2/3 from the payload
[02:27] <Randomskk> I think might be better
[02:27] <Randomskk> I forgot, it's not really critical
[02:27] <heathkid> ok
[02:27] <Randomskk> (someone will no doubt correct me when they wake up) but yea
[02:27] <heathkid> why do I see videos with heavy duty rope and straps?
[02:28] <Randomskk> usually that's just on the payload
[02:28] <Randomskk> the actual flight train wants to be something like 1mm nylon
[02:28] <Randomskk> but often it's easiest to attach heavier straps to large payload boxes
[02:28] <heathkid> like 50lb. test fishing line?
[02:29] <Randomskk> maybe
[02:29] <heathkid> my payload is very lightweight
[02:29] <Randomskk> in the USA there are actually FAA requirements about breaking tension
[02:29] <Randomskk> which you'll probably want to look up and obey
[02:29] <heathkid> 50lb. line
[02:29] <Randomskk> but it's not hard to meet as I understand it
[02:31] <heathkid> I want to do a launch tomorrow (same time as the launch at the Dayton Hamvention)... but it's about 99% not going to happen...
[02:32] <heathkid> still testing...
[02:32] <heathkid> :(
[02:32] <heathkid> and I need to put together a payload container
[02:32] <heathkid> and string it all together
[02:32] <heathkid> oh... probably need some gas too. ;)
[02:32] <Randomskk> hehe that does help :P
[02:33] <heathkid> brb
[02:37] <nigelvh> Woot.
[02:37] <nigelvh> Just got an HP 8657B on ebay.
[02:37] <nigelvh> For a price that even it's it's broken I can resell for more as a parts system.
[02:38] <Randomskk> :D
[02:38] <Randomskk> ugh my random forests keep doing different things
[02:39] <nigelvh> Random forests?
[02:39] <Randomskk> forests of trees
[02:39] <Randomskk> decision trees
[02:39] <Randomskk> for a classification/machine learning scoring system thing
[02:39] <nigelvh> Fancy
[02:39] <Randomskk> you can probably imagine what a decision tree is - it's like the things in biology "does it have 4 legs or 6"
[02:40] <Randomskk> you can generate them automatically from data by guessing partitions in numbers ("is it bigger or less than 5?")
[02:40] <nigelvh> Yeah
[02:40] <Randomskk> and then in the end you get "it's thing A" or "it's thing B"
[02:40] <Randomskk> there's a lot more maths behind making them automatically but w/e
[02:40] <Randomskk> random forests makes many of them, all different
[02:40] <Randomskk> then for each test, you average all the predictions
[02:40] <Randomskk> so that you can get a probability of A/B
[02:40] <Randomskk> (in fact each tree also gives a probability and you average each probability, so it's even better)
[02:41] <Randomskk> they're quite good
[02:41] <Randomskk> it's how Kinect works out where your body position is, for instance
[02:41] <nigelvh> Fancy
[02:42] <Randomskk> I have all these fancy things
[02:43] <Randomskk> and not enough data to train them
[02:43] <Randomskk> which is my main problem
[02:43] <nigelvh> Then getz moar of teh dataz
[02:44] <Randomskk> yea
[02:44] <Randomskk> easier said than done
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[04:08] <heathkid> ...and yet no one will send me a photo of how to connect the paraschute between the payload and the balloon...
[04:10] <heathkid> guess I'll just let it hang over the side and hope for the best?
[04:14] <Randomskk> what are you looking for? you need to tie all the ropes on the parachute to the main string between the balloon and the payload
[04:14] <Randomskk> I recommend a knot
[04:14] <Randomskk> typically you'll want to make one loop out of all the parachute leads, so they stay in order, then perhaps cut the main load bearing cord and knot both ends of the cut to that loop (so it can't slip)
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[05:56] <G4MYS> Morning all - anything going up in the world today?
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[06:08] <x-f> good morning
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[06:09] <x-f> G4MYS, in UKHAS world - at least two picos in Central Europe
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[06:17] <G4MYS> Good moring and thank you Ill monitor DC to Light with interet tof day then !
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[06:19] <Erwin_OE1FEA> Good morning world :)
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[06:33] <x-f> morning, Erwin
[06:34] <x-f> G4MYS, i forgot about Stratodean - launching 2pm BST from the UK
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[06:48] <G4MYS> x -f OK thank you ill be ready and waiting any thoughts on frequency?
[06:50] <x-f> $$SDEAN, 434.650MHz, 50 baud, 350hz shift, ASCII-7, 2 stop bits, no parity
[06:55] <x-f> everybody should subscribe to the UKHAS mailing list for upcoming launch announcements and other information :)
[06:55] <x-f> http://groups.google.com/group/ukhas
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[06:57] <G4MYS> x - f many thanks monitoring freq have some low level QRM spot on 650 but sjhould be OK Andy
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[07:35] <Upu> Is Tom up again ?
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[07:49] <jcoxon> morning all
[07:50] <jcoxon> oooo is that a pico up in poland?
[07:50] <Upu> yup
[07:50] <Upu> another
[07:50] <Upu> he's a pico launching machine is Tom
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[07:52] <Alchamist> Morning all. Has anyone heard if Sci1 managed to retrieve their payload yesterday?
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[07:54] <jcoxon> Upu,needs to keep it at 0.8m/s rather than 1.1m/s to get float...
[07:54] <jcoxon> looks like its approaching float or burst...
[07:56] <jcoxon> it'll be awesome if it does
[07:57] <jcoxon> haha http://ready.arl.noaa.gov/hysplitout/19382_trj001.gif
[08:00] <Upu> yeah that would be amazing :)
[08:00] <Upu> yesterdays burst
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[08:00] <SP9UOB> morning all
[08:00] <Upu> oh just the man
[08:00] <Upu> morning Tom
[08:00] <SP9UOB> http://sp9uob.verox.pl/pico/pico3.jpg
[08:00] <Upu> nice :)
[08:00] <jcoxon> good work SP9UOB
[08:01] <Upu> ascent rate slowing and not too high
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[08:01] <jcoxon> 1 balloon makes me happy
[08:01] <Upu> float damn you float :)
[08:01] <Upu> 1 balloon is best balloon
[08:01] <jcoxon> none of this 2 balloon rubbish
[08:01] <SP9UOB> i hobe it not gonna burst
[08:01] <jcoxon> so do i
[08:01] <jcoxon> needs the 0.8m/s sweet spot
[08:01] <Upu> coming to the UK if it floats
[08:01] <SP9UOB> Upu: i put AA thit time :-)
[08:02] <Upu> haha
[08:03] <jcoxon> SP9UOB, the good news is you get better listener coverage then we do
[08:03] <jcoxon> so we can find out exactly what happens
[08:04] <eroomde> oh it is heading this way?
[08:05] <SP9UOB> jcoxon: yeah Polish hams likes my experiments :-)
[08:05] <SP9UOB> and thry are very helpfull :-)
[08:05] <jcoxon> :-D
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[08:05] <SP9UOB> they
[08:05] <jcoxon> i feel with picos the slow the ascent rate hte better
[08:06] <Alchamist> Is there any documentation on the net about the pico payloads?
[08:06] <SP9UOB> yesterday it reach 5.5 km
[08:06] Action: x-f crosses fingers.
[08:06] <jcoxon> Alchamist, the wiki has lots of info
[08:06] <SP9UOB> but it was lighter (AAA battery)
[08:06] <jcoxon> i'm sure SP9UOB will add his data as well
[08:07] <Upu> Alchamist I've done a number of articles on my blog about them http://ava.upuaut.net/?p=448
[08:08] <SP9UOB> its still ascending :-(
[08:08] <SP9UOB> thermal?
[08:08] <Alchamist> Fantastic - thanks guys
[08:08] <Geoff-G8DHE_> Morning
[08:09] <Upu> morning Geoof
[08:09] <jcoxon> SP9UOB, its thinking about floating...
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[08:11] <jcoxon> picos often slightly overshoot
[08:11] <jcoxon> then settle down to float a little lower
[08:11] <jcoxon> http://ready.arl.noaa.gov/hysplitout/19382_trj001.gif
[08:11] <Geoff-G8DHE_> Looks better in GE than the rate profile on the map as its condensed!
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[08:12] <Upu> if it floats and if it follows that track you're not going to have any issues with reception
[08:14] <eroomde> an asside-hobby is looking at the local area of where launches happen
[08:14] <eroomde> gliwice looks rather nice!
[08:14] <eroomde> http://upload.wikimedia.org/wikipedia/commons/1/1d/Gleiwitz-Ring_mit_Rathaus.JPG
[08:15] <SP9UOB> eroomde: https://www.google.pl/#newwindow=1&safe=off&hl=pl&sclient=psy-ab&q=gliwice+radio+tower&oq=gliwice+radio+tower&gs_l=hp.3..0j0i30l2.1391.8499.0.8938.19.16.0.3.3.0.306.2261.1j13j1j1.16.0...0.0...1c.1.14.psy-ab.JVnSxAFN9Ts&pbx=1&bav=on.2,or.r_cp.r_qf.&bvm=bv.46751780,d.Yms&fp=2772ce8fda363525&biw=1920&bih=1004
[08:15] <SP9UOB> http://en.wikipedia.org/wiki/Gliwice_Radio_Tower
[08:15] <SP9UOB> sorry for that
[08:15] <Upu> too fast :/
[08:16] <eroomde> i wouldn;t have thought to make something like that out of wood
[08:16] <eroomde> wood is always surprising
[08:16] <SP9UOB> eroomde: me too, i have to just go there and touch :-)
[08:17] <eroomde> i remember looking at something which needed something like polycarbonate
[08:17] <eroomde> which is used as bullet proof glass and in riot shields
[08:17] <Geoff-G8DHE_> http://360.g8dhe.net/hab_flights/SP9UOB-20130518/sp9uob201305180916.jpg
[08:17] <eroomde> very good at absorbing energy, quite light
[08:17] <eroomde> and it turned out aircraft-grade plywood was about as good in every way
[08:17] <eroomde> and cheaper
[08:18] <SP9UOB> its floating i think
[08:18] <Upu> looks promising
[08:19] <jcoxon> fingers crossed
[08:22] <jcoxon> its up to something
[08:23] <SP9UOB> Upu: get ready to recover it ;-)
[08:24] <Geoff-G8DHE_> Looks good http://360.g8dhe.net/hab_flights/SP9UOB-20130518/sp9uob201305180923-float.jpg
[08:24] <jcoxon> SP9UOB, its got a long way to go
[08:24] <SP9UOB> jcoxon: i hope so !
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[08:25] <Geoff-G8DHE_> Still climbing
[08:27] <jcoxon> its such a tease
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[08:29] <Upu> whats the highest one of these has gone without burstning ?
[08:29] <Upu> 5.6 ?
[08:30] <jcoxon> they can float at 5.6
[08:30] <jcoxon> but usually start lower
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[08:32] <Geoff-G8DHE_> its slowing down
[08:32] <Geoff-G8DHE_> rate of climb that is
[08:33] <Hix> eroomde: do you have any reading recommendations for learning about data logging and analysis and also the development of such software?
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[08:35] <x-f> looks like Slovak pico is getting ready to launch
[08:35] <x-f> good morning, Radim :)
[08:36] <SP9UOB> hi radim_OM2AMR
[08:37] <SP9UOB> radim_OM2AMR: put less gas than me :-)
[08:37] <Upu> lol
[08:37] <jcoxon> yeah go for super slow
[08:37] <radim_OM2AMR> hi, how many ? :-)
[08:37] <SP9UOB> anyway we are prepared to take over tracking :-)
[08:37] <jcoxon> aim for 0.8m/s
[08:37] <Upu> so difficult to get that accurately :)
[08:37] <jcoxon> i know
[08:37] <jcoxon> its scary slow
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[08:38] <SP9UOB> i tried 2 times - with no luck
[08:38] <jcoxon> SP9UOB, keep trying
[08:38] <jcoxon> and we haven't given up on the currntly flight
[08:38] <jcoxon> you never know!
[08:39] <SP9UOB> anyway we have 5.7 :-)
[08:39] <Upu> my next one is going to be as slow as I can make it and stull go up
[08:39] <Upu> still
[08:39] <radim_OM2AMR> TOmek, great :-) Dano OM1ATS is complaining, that can't decode your balloon due to our :-D
[08:39] <Geoff-G8DHE_> http://360.g8dhe.net/hab_flights/SP9UOB-20130518/sp9uob201305180939.jpg
[08:39] <x-f> uh, STS-3 temperature at 45.5C
[08:39] <SP9UOB> x-f: hot south :-)
[08:40] <x-f> really :)
[08:40] <SP9UOB> c'mon FLOAT !
[08:41] <eroomde> i chopped the head off a bird for you SP9UOB
[08:41] <eroomde> well i'll pretend it's a sacrifice to aeolus for the purpose of this conversation
[08:41] <eroomde> it's actually just for lunch
[08:41] <SP9UOB> radim_OM2AMR: http://sp9uob.verox.pl/pico/pico3.jpg
[08:41] <SP9UOB> eroomde: ;-)
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[08:41] <SP9UOB> 5.8
[08:43] <Upu> doing well :)
[08:43] <SP9UOB> maybe it absorbes hydrogen from atmosphere ;-) ?
[08:44] <SP9UOB> the payload is 30 grams
[08:44] <Erwin_OE1FEA> radim is making coffee in STS-3 ? :)
[08:44] <SP9UOB> 5.9 km
[08:44] <x-f> he's warming up for the launch
[08:44] <SP9UOB> lol
[08:44] <SP9UOB> burst
[08:44] <SP9UOB> :-(
[08:45] <Erwin_OE1FEA> SP9UOB: still no signal here in Vienna .... maybe at 8 km ...
[08:45] <x-f> :/
[08:45] <Upu> oh dear
[08:45] <WILLdude> Hello
[08:46] <Upu> morning Will
[08:46] <Erwin_OE1FEA> shit, no chance to track ....
[08:46] <Geoff-G8DHE_> dropping ?
[08:46] <Geoff-G8DHE_> yes
[08:46] <eroomde> alas
[08:46] <SP9UOB> radim_OM2AMR: QRG please ?
[08:46] <Upu> oh well, launch again less gas SP9UOB :)
[08:46] <Erwin_OE1FEA> than ascending 0.01 m/s ?
[08:47] <daveake> or same gas more weight ... might be less chance of bursting if it floats lower
[08:47] <jcoxon> i'd base it on ascent rate
[08:47] <Erwin_OE1FEA> STS-2: 438.020
[08:47] <jcoxon> so measure the ascent rate before launch
[08:47] <Erwin_OE1FEA> STS-3 ...
[08:48] <radim_OM2AMR> hi erwin, in a few minutes launch
[08:48] <fsphil> "alas" .. a very british swear word
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[08:49] <eroomde> alas is not a swear word
[08:49] <Erwin_OE1FEA> ok, radim. countdown t -00:20 ?
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[08:50] <fsphil> people use it as such sometimes
[08:50] <eroomde> it might be an exclamation though
[08:50] <eroomde> like gosh
[08:50] <eroomde> but i wouldn;t call ryaniar a bunch of alasing idiots
[08:50] <eroomde> unless I undersampled them and didn;t have my spellchecker on
[08:50] <eroomde> /nerdjoke
[08:51] <fsphil> yay
[08:52] <SP9UOB> forrest :-(
[08:52] <KF7FER> run forrest run?
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[08:53] <fsphil> that fell really quickly
[08:53] <SP9UOB> radim_OM2AMR: Polish hams are ready :-)
[08:53] <Geoff-G8DHE_> http://360.g8dhe.net/hab_flights/SP9UOB-20130518/index.php?ind=6 Oops
[08:53] <x-f> maybe it fell through all the branches to the ground
[08:53] <radim_OM2AMR> :-)
[08:54] <radim_OM2AMR> live http://www.ustream.tv/channel/radim-channel
[08:54] <Geoff-G8DHE_> Tom did you fix the knot this morning ?
[08:54] <Erwin_OE1FEA> radim, what are U heating in your payload?
[08:55] <SP9UOB> Geoff-G8DHE_: yes :-)
[08:55] <fsphil> nice garden
[08:56] <g4sgx> SP9UOB: 3rd time lucky ..
[08:56] <SP9UOB> yeah, my wife went shopping, when she's back i im going to chase :-)
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[08:58] <Erwin_OE1FEA> radim, nice stream. perfect ! :)
[08:59] <KF7FER> needs more hot chicks in swimsuits
[08:59] <KF7FER> sorry, long night testing battery life
[08:59] <fsphil> lol
[09:02] <KF7FER> I hit 4hrs 30mins w/ 1xAA and my APRS Tracker w/ HX1
[09:02] <KF7FER> and VIN=1.414v
[09:03] <KF7FER> now it looks like a balloon!
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[09:09] <SP9UOB> preety windy
[09:09] <Erwin_OE1FEA> STS-3: take off
[09:09] <KF7FER> take off? I've got a commercial :-/
[09:10] <SP9UOB> radim_OM2AMR: i said less gas ;-)
[09:12] <radim_OM2AMR> :-) we tried less
[09:12] <Erwin_OE1FEA> waiting for seeing signal in my waterfall
[09:13] <SP9UOB> radim_OM2AMR: horisontal speed isnt very accurate according to wind ;-)
[09:13] <Upu> 2.6m/s :)
[09:13] <radim_OM2AMR> we have enough hydrogen and balloons here :-)
[09:14] <Geoff-G8DHE_> http://360.g8dhe.net/hab_flights/STS-3/
[09:14] <SP9UOB> radim_OM2AMR: QRG ?
[09:15] <radim_OM2AMR> 438.0167
[09:15] <Erwin_OE1FEA> announced 438.020
[09:16] <SP9UOB> radim_OM2AMR: this is "dial"?
[09:16] <radim_OM2AMR> yes dial
[09:16] <SP9UOB> ok, i'll post
[09:16] <radim_OM2AMR> turning to south east
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[09:18] <SP9UOB> radim_OM2AMR: do You have photos of Your payload ?
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[09:18] <radim_OM2AMR> stsproject.net
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[09:19] <radim_OM2AMR> nice visual still
[09:20] <Erwin_OE1FEA> radim, maybe something wrong at my config: doesn't see your sig in waterfall with 450 shift ... :(
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[09:22] <radim_OM2AMR> maybe too early
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[09:23] <SQ9DIQ> QRV ?
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[09:24] <SQ9DIQ> ok , Im too
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[09:25] <Erwin_OE1FEA> I'm too stupid to tune in :(
[09:25] <SQ9DIQ> what QRG for STS-3 ?
[09:26] <SP9UOB> 438.0167 MHz USB,
[09:26] <Erwin_OE1FEA> announced 438.020. 300 baud 450 shift
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[09:27] <SP9UOB> radim_OM2AMR: anyway, Your antenna has about 18 ohm impedance
[09:27] <Erwin_OE1FEA> no, neiter on X40 nor on moxon a signal
[09:27] <Erwin_OE1FEA> X50
[09:27] <SP9UOB> radim_OM2AMR: You should bend rasials to about 135 deg from radiator - You have about 90 deg
[09:28] <Erwin_OE1FEA> moxon is directed 90°
[09:28] <SP9UOB> radials
[09:28] <SP9UOB> Erwin_OE1FEA: im talking about payload antenna
[09:28] <SP9UOB> http://stsproject.net/wp-content/uploads/2013/05/IMAG0328.jpg
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[09:33] <radim_OM2AMR> tomek, we are thinkink about beritex flight after chase today :-) intended to float :-)
[09:33] <Erwin_OE1FEA> radim, pls confirm: 300 baud 7n2, 450 shift ???
[09:34] <SP9UOB> radim_OM2AMR: what is beritex?
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[09:34] <SP9UOB> anyway still no visible traces at all
[09:34] <radim_OM2AMR> tomek, that red piece of latex what I sent you :-D
[09:34] <SP9UOB> radim_OM2AMR: ah ok :-)
[09:35] <SP9UOB> i also have some gas left :-)
[09:35] <radim_OM2AMR> hydrogen or helium ?
[09:35] <Erwin_OE1FEA> only OM1ATS, Armaman could ttrace?
[09:35] <SP9UOB> radim_OM2AMR: helium
[09:35] <radim_OM2AMR> ok
[09:39] <SP9UOB> some traces here
[09:39] <SP9UOB> but 300 baud is too fast i think
[09:39] <SP9UOB> got cw id :-)
[09:40] <Geoff-G8DHE_> http://360.g8dhe.net/hab_flights/STS-3/index.php?ind=1
[09:44] <radim_OM2AMR> great
[09:44] <SP9UOB> l&$Sm,331q,89:4<:2,48.1672717Zs86l03>2,027V>u0,"7w1b1q{Awo{
[09:44] <Erwin_OE1FEA> now i can decode every 5th sentence :)
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[09:47] <SP9UOB> $$$STS-3,1s00927:24,48>16119,17.457418,0929,03l5o"l!,9|l\;^yfwOtu?~<
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[09:49] <radim_OM2AMR> 300 bd is good for shorter distance maybe
[09:49] <SP9UOB> $$$$STS-3,1384,09:49:69,48.176498,17.487106,04094,039,1.49,26.5,11*7778
[09:50] <SP9UOB> allmost
[09:50] <SP9UOB> GREEN !
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[09:52] <radim_OM2AMR> tomek great!!
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[09:57] <SP9UOB> S=0 but stable decodes
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[09:59] <SP9UOB> S=1
[10:00] <Erwin_OE1FEA> S=0
[10:00] <craag> SP9UOB: You're managing an impressive range, what's your setup?
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[10:01] <SP9UOB> nothing special, Diamond X510N (40 m above ground), and ICOM IC-9100
[10:02] <SP9UOB> 239.9km
[10:02] <SP9UOB> elevation: 0.0 :-)
[10:02] <craag> heh, 40m above ground, that'll be it then!
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[10:06] <SP9UOB> S=3 nhere
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[10:07] <pws> Any track prediction for STS-3 ?
[10:09] <SP9UOB> really fine signal
[10:10] <jcoxon> slow down sts-3
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[10:15] <SP9UOB> elevation: 0.2 :-)
[10:16] <Erwin_OE1FEA> signal lost in noise :(
[10:17] <Geoff-G8DHE_> Both flights together http://360.g8dhe.net/hab_flights/STS-3/index.php?ind=2
[10:17] <SP9UOB> i have S=4 dist 232.8 km
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[10:20] <SP9UOB> looks like floating :-)
[10:21] <Geoff-G8DHE_> Looking good ...........
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[10:23] <Geoff-G8DHE_> Dropping slowly ...
[10:23] <SP9UOB> leakage ?
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[10:24] <Geoff-G8DHE_> I wonder when they get to a given height that they develp a leak that then gets worse over time ?
[10:24] <Erwin_OE1FEA> signal detected again :)
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[10:27] <Erwin_OE1FEA> sure no burst, looks like leakage ...
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[10:28] <SP9UOB> or HUGE parachute ;-)
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[10:29] <Erwin_OE1FEA> radim what happened?
[10:30] <Erwin_OE1FEA> leakage or bird sitting on it? :)
[10:30] <Geoff-G8DHE_> Perhaps the seam stretches and starts to leak
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[10:30] <Geoff-G8DHE_> Condensation on balloon ?
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[10:31] <Tommo> whatever it is the descent is very linear
[10:32] <radim_OM2AMR> leaking probably
[10:32] <SP9UOB> radim_OM2AMR: no luck with picos :-(
[10:32] <jcoxon> haha SP9UOB look at how many i launched before i got float!
[10:33] <jcoxon> don't give up now
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[10:35] <Erwin_OE1FEA> radim, if you wnat to chase, you have to go a lot of km's :)
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[10:35] <Geoff-G8DHE_> http://360.g8dhe.net/hab_flights/STS-3/STS-3_201305181134.jpg
[10:36] <SP9UOB> signal is fading slowly
[10:37] <chrisstubbs> This thing would make an awesome tracking car http://bit.ly/14fBTip
[10:37] <chrisstubbs> need to get in touch
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[10:38] <Geoff-G8DHE_> Sussex car started to drive off one day with the mast extended!! They ddn't get far.....
[10:38] <chrisstubbs> hahaha
[10:40] <cm13g09> lol
[10:40] <cm13g09> chrisstubbs: I take it you heard about the double decker bus the other day?
[10:40] <cm13g09> the one that became an open topped one
[10:40] <chrisstubbs> haha yeah, not seen any photos though
[10:40] <chrisstubbs> lets have a look
[10:41] <cm13g09> I'm fairly sure there's signs up not take double decker buses under the railway bridge....
[10:41] <cm13g09> BBC had a few
[10:42] <cm13g09> as did Heart
[10:42] <chrisstubbs> I think you can, but you have to take them roight through the middle of the arch
[10:42] <chrisstubbs> are you local then cm13g09?
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[10:42] <cm13g09> chrisstubbs: Little Waltham, when I'm not at Uni ;)
[10:43] <cm13g09> Used to live in Gt Baddow ;)
[10:43] <chrisstubbs> Ah cool, I'm in Danbury
[10:43] <cm13g09> yeah - I'd figured as much
[10:44] <cm13g09> I lurk here most of the time....
[10:44] <cm13g09> blame it entirely on craag and M0NSA
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[10:45] <cm13g09> and I probably should be revising for exams...
[10:45] <cm13g09> but.... well....
[10:45] <cm13g09> it's only final year exams :P
[10:46] <chrisstubbs> HAB > exams
[10:46] <cm13g09> lol - I'm actually a Computer Science student....
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[10:46] <cm13g09> so quite where one of those fits into the HAB community....
[10:47] <SP9UOB> signal is fading, got raerly decodes
[10:48] <SP9UOB> anyway nice slow descent
[10:48] <Geoff-G8DHE_> Need to run two HAB's together one could then repeat the other ;-)
[10:50] <cuddykid> cm13g09: which uni are you at?
[10:50] <Geoff-G8DHE_> http://360.g8dhe.net/hab_flights/STS-3/STS-3_201305181149.jpg
[10:50] <cm13g09> cuddykid: Southampton
[10:51] <cm13g09> along with craag, M0NSA, and I believe mattbrejza is down here too.....
[10:51] <cuddykid> ah right, I know a few engineers at Southampton - 2nd yrs though
[10:51] <cm13g09> heh - I'm supposed to be graduating this year
[10:58] <craag> soton represent!
[11:01] <Geoff-G8DHE_> Heading for another forest http://360.g8dhe.net/hab_flights/STS-3/STS-3_201305181200.jpg
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[11:02] <SP9UOB> oh, it hit the forrest
[11:05] <qyx_> 700m to go
[11:05] <Geoff-G8DHE_> http://360.g8dhe.net/hab_flights/STS-3/STS-3_201305181205.jpg
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[11:06] <radim_OM2AMR> SP9UOB, yes, probably forrest
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[11:08] <qyx_> maybe not
[11:08] <g4sgx> Maybe lucky..
[11:08] <Geoff-G8DHE_> Ah changed direction might make it to the fields!
[11:08] <Erwin_OE1FEA> SP9UOB: ~ 300m aove :)
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[11:09] <Upu> whats ground level ?
[11:09] <qyx_> around 200 imho
[11:09] <Upu> damn thats close
[11:10] <Upu> that might have just made it
[11:10] <qyx_> it has probably landed already
[11:10] <Erwin_OE1FEA> touch down
[11:10] <qyx_> near the road at 220
[11:10] <Geoff-G8DHE_> http://360.g8dhe.net/hab_flights/STS-3/index.php?ind=7
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[11:12] <SP9UOB> radim_OM2AMR: good luck with chasing
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[11:13] <radim_OM2AMR> tnx tomek, I'll let you know, when we will launch beritext today
[11:13] <radim_OM2AMR> if
[11:14] <Geoff-G8DHE_> If you get the balloon back would be interested to hear where the leak was!
[11:14] <Erwin_OE1FEA> STS-3 travelled ~ 73 km
[11:15] <radim_OM2AMR> GEoff, yes, we will see it, what heppens
[11:15] <SP9UOB> radim_OM2AMR: ok text me, because im also going to chase :-)
[11:15] <radim_OM2AMR> ok tom, bye for all
[11:15] <SP9UOB> CU
[11:15] <Erwin_OE1FEA> bye bye radim
[11:15] <Geoff-G8DHE_> 73's
[11:16] <Geoff-G8DHE_> Tim for lunch before SDEAN ;-)
[11:16] <Geoff-G8DHE_> *time
[11:16] <g4sgx> Am i right in thinking if the balloon was made of something that did not burst, a float is guaranteed ?
[11:16] <griffonbot> @stratodean: Heading up to our launch site shortly!#stratodeanlaunch #ukhas [http://twitter.com/stratodean/status/335715563861073920]
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[11:17] <cm13g09> hmm - that looks tree-like for STS-3
[11:17] <Geoff-G8DHE_> Close at least!
[11:18] <cm13g09> indeed
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[11:20] <Geoff-G8DHE_> <g4sgx> I believe so, but UV, temperature all affect the material .....
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[11:22] <g4sgx> Seems like a good application for graphene once they can manufacture lots if it.
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[11:23] <SpeedEvil> g4fui: if of infinite strength
[11:24] Nick change: oh7lzb -> Hes
[11:24] <SpeedEvil> g4fui: your balloon strength needs to be enough to contain the pressure difference inside and out.
[11:25] <SpeedEvil> for a floater, this is enough that the excess compression of the gas inside stops the balloon being bouyant
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[11:25] Nick change: Hes -> hessu
[11:25] Nick change: hessu -> hes
[11:26] <SpeedEvil> this means that the required internal pressure is closely related to the bouyancy force - and hence the rise rate
[11:27] <SpeedEvil> for any given balloon, with a finite pressure over the atmoapohere at burst, there will be a rise rate at which it floats, and above this rate (filled more at launch), it will burst.
[11:27] Nick change: hes -> oh7lzb
[11:29] <g4sgx> Nice, plenty room for experimentation then, both on balloon materials/construction and possible pressure release systems. Cutting edge stuff, excellent.
[11:30] <SpeedEvil> there should be a nice clean relation, but I can't work it out
[11:31] <chris_99> has anyone made their payload glide roughly back towards the launch site?
[11:32] <SpeedEvil> Laurenceb:
[11:32] <SpeedEvil> though his doesn't work out right
[11:32] <chris_99> aha, how did that work?
[11:35] <g4sgx> Can't wait. My PIC development board arrives next week, still thinking on a project name. StratoNorfolk appeals! lol
[11:36] <chris_99> what PIC have you gone for g4sgx?
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[11:37] <g4sgx> chris_99: Gone for a 18F67J94
[11:38] <g4sgx> 4 uarts, loads A to D and a programmable voltage reference output. Normally used for AtoD but great for the TX
[11:39] <chris_99> nice :), how are you planning on logging the flight data, SD card?
[11:39] <g4sgx> and 128K programm memory expandable to several Mb
[11:40] <chris_99> interesting that chip doesn't seem to come in DIP
[11:41] <g4sgx> Think so yes, neeed to look at the protocol. It also has a USB port. Only the one package, my eyes and soldering aren't what they used to be, thus the dev board.
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[11:42] <chris_99> aha, yeah i've been playing around with a PIC and USB recently, their samples are quite handy
[11:44] <g4sgx> Luckily I used to write serial code in assembler for a living many years ago, hopefully straight forward though I know C is supported for this chip on MPLAB but unsure about assembler. With 128K though maybe C is the way apart from time critcal procedures.
[11:45] <g4sgx> I used to have to squeeze loads into 4K..!
[11:45] <chris_99> mm, i'd imagine getting USB to work in ASM alone would be a pain in the neck ;)
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[11:46] <g4sgx> Depends on the on chip support, think its covered.
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[11:55] <g4sgx> Assembler is great, closet you can get to working in binary. Easy to establish how many clock cycles a procedure takes and with direct interupt driven code makes timing a synch. Im abit of a reductionist, thus my love of morse code. :)
[11:55] <chris_99> yeah i've used assembly where it's strictly necessary like for VGA timing, but where i can use C i tend to just use that
[11:57] <g4sgx> Indeed, if timing or program space isnt an issue it makes sense. Shame there isnt a plugin for Qt Creator for a PIC. Great program.
[11:58] <S_Mark> ok heading to the launch site, will be back shortly
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[12:04] <chris_99> g4sgx, btw if you're going to use a C compiler, the xc8,xc16,xc32 ones are really good imo (i use the xc32 one) they're basically just microchips modified version of gcc
[12:09] <g4sgx> Haven't yet checked it out yet much, as I say I'm a bit out of date. Is MPLAB the only software available for PIC programming still or is there an alternative. The PIC I'm using is a quite new only just supported.
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[12:09] <chris_99> mplabx is the main ide now
[12:09] <chris_99> which is written in java, which runs in linux too
[12:12] <g4sgx> Cool, I recently moved over to Linux. Windows never been the same since XP!
[12:12] <chris_99> heh yeah
[12:12] <SpeedEvil> chris_99: Laurencebs rolago worked sort of OK, and seemed to be working in some ways, but got into a tangle on the way down and doesn't properly control, so did not land on target
[12:12] <SpeedEvil> I think he had some bugs too.
[12:12] <SpeedEvil> he has not reflown
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[12:13] <chris_99> cool do you know if he's got a webpage, just had a quick google but couldn't seem to find it
[12:14] <SpeedEvil> I think he did wrote it up, but no idea
[12:14] <SpeedEvil> write
[12:15] <chris_99> okey dokey, i'll give him a shout when he's about
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[12:20] <SpeedEvil> why?
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[12:20] <SpeedEvil> I mean what were you wondering about
[12:21] <chris_99> i'm just wondering how it worked, like whether it attempted to spiral towards the launch site
[12:21] <SpeedEvil> it was wacky
[12:21] <SpeedEvil> it tracked windspeed on ascent
[12:22] <SpeedEvil> and then used that wind profile with height to derive a path back
[12:24] <chris_99> cool
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[12:39] <g4sgx> Just had a crazy idea. If a pico balloon consisted of an inner gas proof layer and a not air tight but very strong thin outer layer to contain & rstrict the inner balloon this could resist bursting. The inner balloon would have to have no seams.
[12:40] <SP9UOB> bye for now all
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[12:40] <SP9UOB> its time to lunch and chase :-)
[12:41] <g4sgx> <SP9UOB> Good luck..
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[12:42] <SpeedEvil> g4fui: sure
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[12:46] <WILLdude> Hi
[12:49] <chrisstubbs> Woah that was good, just snipped a cable tie and the end flew into the bin on the other side of the room!
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[12:51] <Geoff-G8DHE> Object Movie of flight path for STS-3 this morning http://360.g8dhe.net/hab_flights/STS-3/sts-3.html
[12:51] <Geoff-G8DHE> Object Movie of flight path for SP9OUB this morning http://360.g8dhe.net/hab_flights/SP9UOB-20130518/sp9oub20130518.html
[12:51] <chrisstubbs> afternoon will
[12:52] <chrisstubbs> going to have a go at tracking today?
[12:52] <WILLdude> Nope.
[12:53] <WILLdude> Well, where is it?
[12:53] <chrisstubbs> wales :P
[12:53] <chrisstubbs> yeah its quite a far one
[12:53] <WILLdude> Urgh
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[13:01] <g4sgx> chris_99: I've ordered a new pickit3, although I do own an old promate. (The serial programming module for a promate is over £150!) Are there any sources for less expensive modules? maybe homebrew?
[13:01] <GW8RAK> It makes a change to have a launch in the west
[13:02] <Geoff-G8DHE> and going West as well!
[13:02] <GW8RAK> Really want it to go north
[13:02] <GW8RAK> One day, one will come this way
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[13:03] <griffonbot> @stratodean: Stratodean launch delayed by 30 mins. Aiming for 2:30, going as fast as we can! #ukhas [http://twitter.com/stratodean/status/335742552013680640]
[13:04] <Geoff-G8DHE> Ah standdown then lads time for another coffee
[13:05] <g4fui> and give today's monsoon time to move away . . .
[13:06] <GW8RAK> Can get the washing up done
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[13:13] <OM1ATS> STS-3 is found !
[13:14] <chrisg7ogx> congrats
[13:14] <Upu> super :)
[13:15] <Geoff-G8DHE> Great news! Did it clear the trees ?
[13:15] <chrisstubbs> Yay :D cleared the trees then?
[13:15] <chrisg7ogx> sri what news os StratoDean please?
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[13:16] <Geoff-G8DHE> Delayed till 14:30
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[13:16] <chrisg7ogx> cheers geoff just time to finish the lawn!
[13:16] <Geoff-G8DHE> Coffee/Washingup/Lawn whatever ;-)
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[13:18] Action: nommo is pulling dandelions grrrr
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[13:21] <SpeedEvil> nommo: its an excellent machine vision task
[13:21] <SpeedEvil> just grab all bright yellow objects
[13:21] <OM1ATS> STS-3 has been found in the field.
[13:21] <SpeedEvil> :-)
[13:22] <nommo> SpeedEvil: Yes - I am sure there must be a way to automate :) They're tricksy beggars though
[13:22] <OM1ATS> field with mud :)
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[13:23] <SpeedEvil> my other idea is to somehow train blackbirds to bring dandelion heads in exchange for seeds
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[13:28] <iain-G4SGX> Not good QRG for me, constant QRM on 434.65 www.g4sgx.org/images/screen.png
[13:29] <Geoff-G8DHE> In his post its suggested 434.633 might be btter ?
[13:30] <iain-G4SGX> Better here for sure
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[13:31] <griffonbot> Received email: Matt Holmes "Re: [UKHAS] First Launch - Sci1"
[13:31] <S_Mark> hi ALL
[13:32] <S_Mark> sorry for delay
[13:32] <S_Mark> will be up v shortly
[13:32] <chrisstubbs> Hey mark
[13:32] <chrisstubbs> what was the problem?
[13:32] <S_Mark> brb
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[13:44] <iain-G4SGX> SP9UOB now seems to be on top of a building! Another launch/
[13:46] <Geoff-G8DHE> Looks promising!
[13:47] <griffonbot> @DutchMillbt: RT @stratodean: Stratodean launch delayed by 30 mins. Aiming for 2:30, going as fast as we can! #ukhas [http://twitter.com/DutchMillbt/status/335753475600302080]
[13:50] <Geoff-G8DHE> Humm rubbish noise appearing on 434.633 now :-(
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[13:51] <griffonbot> Received email: Geoff Mather "[UKHAS] Re: Slovakia - STS-3 PICO TEST Flight Announcement Saturday
[13:51] <griffonbot> Received email: Geoff Mather "[UKHAS] Re: PICO Launch friday 17 or saturday 18 may Heading Norway :-)"
[13:51] <griffonbot> Received email: "Re: [UKHAS] First Launch - Sci1"
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[13:55] <Geoff-G8DHE> Launched SDEAN
[13:56] <S_Mark> ok
[13:56] <S_Mark> up
[13:56] <g6gzh> hearing it
[13:56] <chrisstubbs> Awesome
[13:57] <GW8RAK> First string is decoded
[13:58] <GW8RAK> S6 here already
[13:58] <S_Mark> sorry for delays
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[14:00] <G4MYS> how many kilowatts is this thing running? an amazing S8 In Southampton... G4MYS
[14:00] <Geoff-G8DHE> You might see it coming back overhead S_Mark
[14:00] <S_Mark> yeah i think that was the plan, though quite cloudy
[14:01] <mattbrejza> G4MYS: peobably your antenna, im decoding fine but Snothing
[14:01] <g4fui> Dial freq/shift anyone?
[14:01] Nick change: LazyLeopard -> LazyL_M0LEP
[14:01] <g6gzh> very weak signal in Cambridgeshire but the band is quiet so I'm decoding fairly well
[14:01] <mattbrejza> 650
[14:01] <iain-G4SGX> What's the dial freq?
[14:01] <LazyL_M0LEP> 434.650
[14:02] <GW8RAK> Audio at 1500Hz
[14:02] <G4MYS> its on 434.653.4MHz
[14:03] <S_Mark> signal ok?
[14:03] <GW8RAK> S_Mark - very good
[14:05] <chrisstubbs> Close to decodes from me on the other side of the country
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[14:05] <GMT> nice clear signal in WLondon, perfect copy (decode) since I tuned in.
[14:06] <Geoff-G8DHE> Duh aerial not screwed in!
[14:06] <chrisg7ogx> Doh! great sig here on south coast
[14:06] <Geoff-G8DHE> It is now!
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[14:07] <GW8RAK> You're not the first person on here to make that mistake :)
[14:07] <chrisg7ogx> f4fwt you will soon be with us!
[14:08] <mfa298> better to make that mistake on the rx rather than the tx - at least it's fixable.
[14:09] <Geoff-G8DHE> Was listining on HF the other night, and just unscrewed the PL259 shell ....
[14:12] <nommo> ok - I need to buy an antenna
[14:12] <GMT> ... or make one
[14:12] <nommo> I should be able to pick this up on a wet bit of string... but a bit of wire isn't doing it ;)
[14:12] <g4fui> AOS in Penrith, no decodes yet
[14:13] <nommo> I did find some alu wire in the shed while lookng for a dandelion removal tool
[14:13] <G4MYS> nice stable tx too dont have to hang on to the VFO ! very good
[14:13] <nommo> So maybe a last try with that before splashing out...
[14:13] <g4fui> The blue circle is spot on again :-)
[14:14] <GW8RAK> What are you using nommo?
[14:14] <GMT> nomma: I made an antenna from some old wire coathangars
[14:14] <fsphil> oooh they're up
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[14:14] <nommo> I am just using a bit of coax split into a dipole arrangement
[14:14] <Geoff-G8DHE> For those without Google Earth http://360.g8dhe.net/hab_flights/SDEAN-20130518/
[14:15] <nommo> At the right length...
[14:15] <GW8RAK> Should work. Location is everything though
[14:15] <nommo> I am getting something in the waterfall but not decoding
[14:16] <GW8RAK> But it should be a strong signal with you being so close
[14:16] <nommo> I am a n00b though - so I might not have the BW set right, or the gain in SDRsharp - nor the squelch etc in fldigi
[14:17] <mfa298> nommo: what hardware are you using to recieve with ?
[14:18] <nommo> mfa298: I'm using one of those E4000 dongles
[14:18] <GMT> nommo: same here
[14:18] <mfa298> if you don't have one you might find the habamp makes a difference.
[14:19] <GW8RAK> That could be the reason. My E4000 is not worth using
[14:19] <Geoff-G8DHE> fdl-fldigi scrren settings http://360.g8dhe.net/hab_flights/capture.jpg
[14:19] <mfa298> there's not much filtering on those dongles so a strong signal can afect what you're listening to - with the same antenna I've also found it's not as sensitive as the FCD Pro+ or FT817
[14:20] <Upu> I'm trying with the EZCAP now
[14:20] <Upu> but not getting any packets
[14:20] <Upu> very close though
[14:21] <fsphil> just got it on my waterfall
[14:21] <g4fui> Yay! first decode!
[14:22] <fsphil> nice
[14:22] <Upu> congrats
[14:22] <fsphil> I still remember my first decode :)
[14:22] <fsphil> in the attic with an ft817, fighting spiders
[14:22] <chrisg7ogx> g4fui and ur on the screen congrats
[14:23] <fsphil> and I can now hear rtty
[14:23] <chrisg7ogx> lol
[14:23] <g4fui> telemetry solid with me now
[14:23] <fsphil> woo, decode
[14:24] <fsphil> 397km
[14:24] <GW8RAK> Just tried with the USB dongle (8230 chip?) and even with a preamp on, nothing could be seen. They really are quite deaf
[14:24] <fsphil> it must be, it's pretty near you
[14:25] <nommo> Yeah - I think there's too many unknowns in my current setup
[14:25] <GW8RAK> I've tried a few and none have been worth the promise. Although they are okay for airband being near 2 airports
[14:25] <chrisg7ogx> agree a quick change fron FCD pro + to EZCap is enough for me to just use FCD pro + now..but good intro for peeps
[14:25] <nommo> thanks for the screenshot Geoff-G8DHE
[14:25] <fsphil> I'm using a FCD for this, with the habamp v1
[14:25] <g4fui> they are with a BPF in line
[14:26] <fsphil> hehe, elevation is -0.1
[14:26] <GW8RAK> You have someone just over the border from you fsphil
[14:26] <chrisg7ogx> fsphil how high above ur ground is antenna?
[14:26] <Geoff-G8DHE> Set up here is just WX1 white stick(25 years old) @10m ASL, E4000/RTL2832U, SDR-Radio & dl-fldigi
[14:26] <bertrik> the performance of an rtlsdr dongle depends a lot on the tuner chip inside, and you can damage that with static electricity
[14:27] <fsphil> chrisg7ogx: 80m
[14:27] <fsphil> GW8RAK: seen him a few times, hoping he's about for my next launch
[14:27] <GW8RAK> Must be nice to have a local to help out.
[14:28] <fsphil> chrisg7ogx: sorry that's ASL. it's about 10m above ground
[14:28] <fsphil> and ground here is about 70m asl
[14:28] <g4fui> One of my two RTL SDR dongles is v. deaf - I think it got zapped by static, it's the E4000 one
[14:28] <chrisg7ogx> lol
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[14:28] <fsphil> I'd love to have an 80m tower :)
[14:28] <GW8RAK> Seen someone on here from Merseyside which is the nearest person
[14:28] <fsphil> I know there's a few guys in the radio clubs here who'd help track
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[14:29] <chrisg7ogx> spose we should have used one of those anti static mats but so much waiting to discarge at antenna..
[14:29] <Geoff-G8DHE> Someone call a lifeboat for aa222a ;-)
[14:29] <fsphil> signal faded a bit here again, but still decoding
[14:30] <S_Mark_> hello
[14:30] <fsphil> howdy S_Mark_
[14:30] <S_Mark_> 3g issues in wales
[14:30] <GW8RAK> There used to be someone off the coast of Nigeria
[14:30] <S_Mark_> we all ok??
[14:30] <fsphil> 0,0 is the place to be :)
[14:30] <fsphil> it's where all lost payloads go
[14:30] <GW8RAK> You should know :)
[14:30] <chrisg7ogx> gw8rak that's funny
[14:30] <fsphil> lol
[14:30] <fsphil> 0,0, or yorkshire
[14:31] <chrisg7ogx> sharks
[14:31] <S_Mark_> had some tracker issues, wouldnt get fix
[14:31] <S_Mark_> but ok now, sorry for the delay everyone
[14:31] <griffonbot> Received email: Rick Hewett "[UKHAS] Re: First Launch - Sci1"
[14:32] <chrisg7ogx> chores done= happy wifey= more radio ;@}
[14:32] <chrisg7ogx> what height due to burst?
[14:32] <fsphil> we should do another hellscheriber launch sometime :)
[14:32] <GW8RAK> New wifey this year, so don't know how much longer I'll be able to play
[14:33] <chrisg7ogx> helleschreiber sprint this pm 1600 utc
[14:33] <Geoff-G8DHE> Get her licensed !
[14:33] <fsphil> ooh cool
[14:33] <mfa298> I just tried plugging my E4000 in with a BNC-T adapter and it doesn't seem to see anything - but good signal on the FCD Pro+
[14:33] <Upu> super they got it back
[14:33] <fsphil> I do a CQ now and then but few people use the mode
[14:33] <Upu> mfa298 I've given up with the E4000
[14:33] <chrisg7ogx> fsphil sked after this?
[14:33] <Upu> even with a habamp its not great
[14:33] <fsphil> chrisg7ogx: totally
[14:33] <GW8RAK> It seems to be popular in the US and eastern Europe
[14:34] <Upu> missed cuddykid's wood
[14:34] <Upu> phnaar
[14:34] <mfa298> Plenty of other noise noise on it though.
[14:34] <GW8RAK> 5MHz hellschreiber?
[14:34] <chrisg7ogx> https://sites.google.com/site/feldhellclub/Home/contests/sprints/hamvention-sprint
[14:34] <fsphil> I can listen to 5mhz
[14:34] <GW8RAK> Oh sorry,of course
[14:34] <mfa298> Upu: I was just trying as a way of comparing it to the FCD Pro+
[14:34] <chrisg7ogx> have nov?
[14:35] <fsphil> no nov or equipment that can tx there
[14:35] <fsphil> I'm not brave enough to modify my yaesu's
[14:35] <griffonbot> @g4fui: Stratodean2 at 13km altitude on my #FCD #ukhas @stratodean http://t.co/4C4RSTkPOt [http://twitter.com/g4fui/status/335765679464648704]
[14:35] <chrisg7ogx> sprint on "normal" freqs
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[14:37] <fsphil> M0IKB is having locational issues
[14:37] <GW8RAK> Nearly 5 degrees above horizon
[14:37] <chrisg7ogx> sigs made it across channel
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[14:38] <fsphil> nice signal here
[14:39] <chrisg7ogx> ditto
[14:39] <g4fui> 1.3deg elevation here ...
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[14:39] <fsphil> 0.5
[14:39] <chrisg7ogx> tad unstable now
[14:39] <fsphil> solid here
[14:40] <chrisg7ogx> i.e. wavy
[14:40] <chrisg7ogx> will qsy to sprint at 1700 local
[14:41] <GW8RAK> Very little shift on the the audio
[14:41] <fsphil> they must have good insulation
[14:41] <GMT> what kind of TX? RFM or NTX?
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[14:42] <Geoff-G8DHE> Very slight drift high, but pretty good, not had to tune at all!
[14:42] <Upu> nxt2
[14:42] <Upu> NTX2
[14:42] <fsphil> guessing NTX2
[14:42] <fsphil> it's one of the standard radiometrix frequencies
[14:42] <GMT> how do you retune them to work on 434.300 etc?
[14:42] <fsphil> those are probably rfm22b's
[14:42] <g6gzh> internal temp has only changed 3 or 4 degrees
[14:43] <fsphil> the ntx2 can only be tuned slightly
[14:43] <chrisg7ogx> here's the next Arduino project..http://blog.makezine.com/2012/09/11/the-inebriator-cocktail-machine/
[14:43] <cuddykid> hey Upu - might need to commission you to knock up another tracker if that's ok with you
[14:43] <Upu> nps
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[14:43] <cuddykid> Upu: do you still have rfms?
[14:43] <Upu> got a pile of new tracker boards
[14:43] <Upu> yes
[14:43] <cuddykid> good stuff :)
[14:44] <cuddykid> I'll let you know mon or tues - but more than likely it'll be yes
[14:45] <Upu> nps
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[14:47] <fsphil> this could get quite near the coast
[14:48] <jcoxon> KT5TK has launcehd
[14:48] <jcoxon> kt5tk-2 on aprs.fi
[14:52] <Upu> want it putting on spacenear.us ?
[14:52] <jcoxon> why not
[14:53] <chrisg7ogx> lost spacenear.us here
[14:55] <Upu> done
[14:55] <Upu> working ok here chrisg7ogx
[14:55] <GW8RAK> Doesn't look as if I'm uploading decodes now
[14:55] <chrisg7ogx> mm using chrome
[14:57] <PE2G> Hi al, what is the current dial for Stratodean?
[14:57] <Upu> 434.650
[14:58] <PE2G> Thanks!
[14:58] <GW8RAK> fldigi has crashed
[14:59] <GW8RAK> That's better
[14:59] <chrisstubbs> still 0 decodes for me, think this one must be a bit too far away
[15:01] <chrisg7ogx> going for re boot or as Spunkmeir said in a famous film, "coming around for for a one zero niner"
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[15:01] <fsphil> woosh
[15:02] <g4fui> S_Mark had better watch out for those speed cameras on the A40! :-)
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[15:09] <chrisg7ogx> all ok now
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[15:10] <chrisg7ogx> if strato dude stayed as a floater where would it go?
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[15:13] <Geoff-G8DHE> Wow sharp wind change there?
[15:13] <craag> chrisg7ogx: Looks like it's going to u-turn SE
[15:14] <craag> Far too great ascent rate to float though
[15:16] <jcoxon> i suspect KT5TK-2 will float
[15:16] <jcoxon> considering its ascent rate
[15:16] <chrisg7ogx> yes i would love to have a chance to search for it..does it have an HF beacon?
[15:17] <Upu> what balloon is KT5TK ?
[15:18] <chrisg7ogx> altitude to four decimal places!
[15:18] <Upu> APRS
[15:18] <fsphil> side effect of conversion from dinosaur units
[15:19] <chrisg7ogx> lol yes they hold on to them over there
[15:21] <G4MYS> good afternoon Alf good one this I can sit and the Echo without having hang on to the Fairhaven 's VFO
[15:28] <chrisg7ogx> great number of trackers here
[15:28] <iain-G4SGX> YAY a decode!
[15:29] <fsphil> hehe, 30000m exactly
[15:29] <GW8RAK> Just come back at the right time
[15:29] <GW8RAK> Signal getting weaker
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[15:30] <GW8RAK> Almost vanished for a second there.
[15:30] <fsphil> air is pretty choppy up there
[15:30] <iain-G4SGX> mucho decode now for me all of a sudden
[15:31] <GW8RAK> I'm wondering if it isn't strange propagation
[15:31] <GW8RAK> S8 to S0 and back in a couple of seconds is extreme
[15:31] <fsphil> something local? it's not happening here
[15:32] <iain-G4SGX> reflections?
[15:32] <g4fui> I expect it is propagation - there's temperature inversion going on up there
[15:32] <GW8RAK> No increase in noise here, but now it's s3
[15:32] <fsphil> chase car is in a good spot
[15:32] <iain-G4SGX> Ive been getting nothing till few mins ago
[15:32] <chrisg7ogx> I THINK THERE'S ALL SORTS OF DUCTING TO VARYING DEGREES GOING ON
[15:33] <chrisg7ogx> sri
[15:33] <fsphil> better than duckting
[15:33] <PE2G> First successful decodes at dx 693 km: http://s23.postimg.org/dsrgkqo6z/Screen868.jpg
[15:33] <chrisg7ogx> who was that?
[15:33] <chrisg7ogx> name an shame
[15:34] <chrisg7ogx> PE2G lots of noise there?
[15:34] <jcoxon> KT5TK-2 http://www.w5acm.net/b332.html
[15:34] <chrisg7ogx> another car to head strato off at the pass
[15:35] <Upu> should be interesting jcoxon
[15:35] <PE2G> chrisg7ogx: A bit noise, no man made interference though
[15:36] <jcoxon> Upu, oh it'll definitely float
[15:36] <chrisg7ogx> nice phots
[15:36] <Upu> doesn't look a large balloon
[15:36] <jcoxon> true
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[15:36] <chrisg7ogx> will be soon!
[15:38] <chrisg7ogx> a screen grab for a web site picture of spacenear.us now would show great support..
[15:40] <fsphil> burst
[15:40] <Upu> pop
[15:40] <chrisstubbs> ahh just when i start getting decodes :P
[15:40] <chrisg7ogx> BURST
[15:41] <cuddykid> Upu: can you remember if, when the variable "lock", takes the value 3 in the code you sent over whether that means it's got a proper 3D fix?
[15:41] <fsphil> 33.5km, nice
[15:41] <Upu> I think so
[15:41] <Upu> check data sheet
[15:41] <cuddykid> ok, will do
[15:41] <chrisg7ogx> burst at msg # 595
[15:44] <g4fui> Interesting, that message got garbled here
[15:45] <chrisg7ogx> g4fui yes did here first red
[15:45] <fsphil> it sounds like quite a smooth descent
[15:45] <g6gzh> I got a lot of fast fades as it burst, presumably due to the payload shaking, and didn't decode 595
[15:45] <Geoff-G8DHE> Likewise
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[15:46] <g4fui> I captured a nice little frequency bump as it burst on my waterfall
[15:46] <g6gzh> altitude 33520 was clear though
[15:47] <KT5TK-7_> Hi guys. KT5TK-2 is in the air. slowly rising at 30000ft. See APRS.fi
[15:47] <chrisg7ogx> okey dokey..what's the projected path please?
[15:48] <KT5TK-7_> See http://kt5tk.wordpress.com
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[15:48] <Geoff-G8DHE> Its been added to http://wpacenear.us as well KT5TK-7
[15:48] <Geoff-G8DHE> Its been added to http://spacenear.us as well KT5TK-7
[15:48] <KT5TK-7_> Cool, tnx
[15:49] <Geoff-G8DHE> Were you planning to float ?
[15:49] <KT5TK-7_> It has the neww Si4464 transmitter on board
[15:49] <KT5TK-7_> Yes, its a small 300g Hwoyee and we try to get it to float
[15:50] <chrisg7ogx> poor old chase car has to go south to go east
[15:50] <G4MYS> Wondef how many have noticed the temp outside with SDEAN ?
[15:50] <iain-G4SGX> Cor. That part of Wales Strato heading for looks empty, bet they'd let me put up a 80ft mast if I lived here..
[15:50] <fsphil> 19 receivers
[15:50] <chrisg7ogx> it was minus 26 degrees celcius not long after launch....
[15:51] <KT5TK-7_> Here are some launch pictures: http://w5acm.net/b332.html
[15:51] <Upu> hey Brad
[15:51] <Upu> 100g latex ?
[15:51] <Upu> Brad
[15:51] <Upu> duh
[15:51] <Geoff-G8DHE> That looks nice a nd calm!
[15:51] <Upu> Thomas
[15:51] <Upu> sorry
[15:51] <chrisg7ogx> the sheep there have either the left or right two legs longer than the other two due to the slope
[15:52] <nigelvh> Nice one KT5TK-7
[15:52] <fsphil> starting to lose decodes
[15:52] <g4fui> Not particularly mountainous around there, just nice and pretty rolling countryside
[15:52] <Geoff-G8DHE> and a National Park so planning quite strict!
[15:53] <iain-G4SGX> Im in a conservation area, and they do filming in the village, no masts possible.. :(
[15:53] <chrisg7ogx> bet you're the only ham in the village!
[15:54] <Upu> ping KT5TK which balloon did you use ?
[15:54] <nigelvh> KT5TK-7_>
[15:54] <nigelvh> Yes, its a small 300g Hwoyee and we try to get it to float
[15:54] <Upu> ah supetr
[15:54] <Upu> watching with interest
[15:55] <fsphil> right on my horizon now
[15:57] <fsphil> and gone
[15:57] <g4fui> I lost the signal a little more quickly than I expected
[15:57] <chrisg7ogx> something in line of sight i expect
[15:58] <iain-G4SGX> KT5TK-2 burst?
[15:58] <g4fui> Probably the Cambrian Mountains :-)
[15:58] <g4fui> Not to mention the Lake District ones
[15:59] <chrisg7ogx> will continue tracking but off to play in Helleschreiber sprint bye bye everybody..sk
[15:59] <jcoxon> no
[16:00] <jcoxon> iain-G4SGX, i think the aprs parser is playing up
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[16:00] <fsphil> predicted to land in a field of sheep
[16:01] <LazyL_M0LEP> Fading here too.
[16:01] <GW8RAK> Still S8 here
[16:02] <Geoff-G8DHE> Going for me as well South Downs getting in the way :-(
[16:02] <Upu> also getting hill issues
[16:02] <GMT> now starting to ge a few mis-codes
[16:03] <KT5TK-7_> No burst, just crazy GPS
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[16:03] <GW8RAK> It may stay with me for some time. There is a small route through the mountains to that part of Wales
[16:04] <GMT> gone for me ...
[16:04] <Upu> ditoo
[16:06] <LazyL_M0LEP> ...and gone
[16:07] <GW8RAK> Corrupt packets now
[16:08] <fsphil> no uploads from the chase car
[16:08] <Geoff-G8DHE> There going to have quiet a walk to fetch it!
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[16:09] <GW8RAK> Not to self, if my landing area is in mountains, get someone on top of them with GSM access to provide coverage right down to ground
[16:09] <GW8RAK> Note, not not
[16:09] <GW8RAK> Gone
[16:10] <LazyL_M0LEP> Definitely make sure chase car has radio and decode capability. ;)
[16:10] <fsphil> HF relay
[16:10] <Geoff-G8DHE> Two balloons one to act as a repeater!
[16:11] <GW8RAK> Any increase in complexity on a balloon repeater? :)
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[16:11] <fsphil> I've thought about using 869mhz for a payload to payload relay
[16:11] <Geoff-G8DHE> Actually how about releasing a Pico when close to the area with wideband repeater ....
[16:12] <Geoff-G8DHE> The SP9UOB flight and the STS-3 were easily visible to each other this morning!
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[16:12] <eroomde> the electrons and I have exchanged a lot of words today
[16:12] <GW8RAK> Or, illegally, an HF tx which only comes on within 1000m of ground
[16:12] <Geoff-G8DHE> See here http://360.g8dhe.net/hab_flights/STS-3/index.php?ind=3
[16:12] <craag> fsphil: THat sounds a good idea. Using the built-in RFM22 packet mode?
[16:12] <eroomde> trying to get the gps receiver to hear something on 1575.42MHz
[16:12] <eroomde> and finally
[16:12] <eroomde> https://www.dropbox.com/s/8ix1a4swobw3jv3/20130518_164709.jpg
[16:12] <fsphil> craag: yep
[16:12] <eroomde> that fist peak is 1575.42mhz mixed down to 4MHz
[16:13] <fsphil> or something a bit more powerful
[16:13] <fsphil> as we have 500mw to play with
[16:13] <G4MYS> think SDEAN has done a "Radio Caroline" Viz gone off air?
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[16:13] <Upu> amusing levels of kit eroomde
[16:13] <eroomde> https://www.dropbox.com/s/qhbf88zkn99e8cx/20130518_164808.jpg
[16:13] <eroomde> the siggen to prove it
[16:13] <GW8RAK> I've never worked out why it is called Wireless :)
[16:14] <WILLdude> Hello
[16:14] <GW8RAK> Shack is full of the damned things
[16:14] <eroomde> Upu: like i said it's been emotional
[16:14] <eroomde> have taken the qfn on and off twice
[16:14] <eroomde> hand soldered back on in each case
[16:14] <eroomde> and most pther bits
[16:14] <eroomde> turned out to be a miscalculated filter in the pll
[16:14] <eroomde> so it wasn't stabilising
[16:14] <G4MYS> There were no wires between you and the studio - honest
[16:15] <WILLdude> I'm sooo bored.
[16:16] <Geoff-G8DHE> Nice moor to walk on however http://goo.gl/maps/OBK02
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[16:29] <SP9UOB> evening all
[16:30] <SP9UOB> well... partially recovered ;-)
[16:31] <gonzo_> what was the latest on stratodean?
[16:31] <chrisstubbs> I text mark just now with the last know coords and expected land coords
[16:31] <chrisstubbs> nothing back yet
[16:32] <gonzo_> I assume the guys (and lasses) got more data, but lost 3g ?
[16:33] <chrisstubbs> Im off for dinner
[16:33] Nick change: chrisstubbs -> csaway
[16:34] <eroomde> dinner at 4.30?
[16:34] <eroomde> dunch?
[16:34] <eroomde> linner?
[16:35] <eroomde> oh 5.30
[16:35] <eroomde> gps time is utc
[16:35] <Geoff-G8DHE> Object Movie of Flight path for SDEAN-2 http://360.g8dhe.net/hab_flights/SDEAN-20130518/SDEAN-2.html
[16:36] <Geoff-G8DHE> <SP9UOB> What was missing ?
[16:40] <fsphil> hab conf still on for the 7th of September?
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[16:42] <SP9UOB> Geoff-G8DHE: nothing, but i need at least chainsaw ;-)
[16:45] <fsphil> standard issue hab recovery equipment
[16:48] <Geoff-G8DHE> Oh it didn't clear the trees then :-(
[16:48] <SP9UOB> http://sp9uob.verox.pl/pico/tree.jpg
[16:49] <Geoff-G8DHE> Bow and Arrow ?
[16:49] <SP9UOB> anyway all envelope is gone - just valve left
[16:49] <daveake> Thought that might be the case from the descent speed
[16:49] <SP9UOB> i thinking about fishingrod
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[16:50] <Chrisstubbs> Just had an update from mark of he hasn't posted here already
[16:50] <Chrisstubbs> stratodean recovered
[16:50] <SP9UOB> Geoff-G8DHE: and Wilhelm Tell ;-)
[16:50] <SP9UOB> or Robin Hood
[16:51] <SP9UOB> in chase crew ;-)
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[16:51] <radim_OM2AMR> hello, STS-3 on the air again :-)
[16:51] <SP9UOB> hi radim
[16:51] <SP9UOB> http://sp9uob.verox.pl/pico/tree.jpg
[16:51] <SP9UOB> radim_OM2AMR: i had less luck
[16:52] <radim_OM2AMR> so I'm sorry for that
[16:52] <SP9UOB> radim_OM2AMR: qrg ?
[16:52] <radim_OM2AMR> anyway, beaming north this time
[16:52] <SP9UOB> cool :-)
[16:52] <radim_OM2AMR> 438.016 cca
[16:52] <SP9UOB> radim_OM2AMR: could You give more details about sonderkiller :-) ?
[16:53] <radim_OM2AMR> :-D
[16:56] <Chrisstubbs> Darned trees
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[17:06] <SP9UOB> radim_OM2AMR: reveiving but with errors
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[17:08] <SP9UOB> $$$$STS-3,1155,17:08:46,48.160381,17.387274,04000,029,1.57,34.5,08*BCAE
[17:09] <SP9UOB> got green
[17:25] <griffonbot> @g4fui: @stratodean Another quality flight with some interesting telemetry & propagation. Here's my waterfall - #ukhas http://t.co/4JaK7hehKc [http://twitter.com/g4fui/status/335808451936653312]
[17:38] <Geoff-G8DHE> Pano from the burst point of SDEAN-2 http://360.g8dhe.net/default.php?HAB
[17:48] <griffonbot> @stratodean: RT @g4fui: @stratodean Another quality flight with some interesting telemetry & propagation. Here's my waterfall - #ukhas http://t.co/4JaK7& [http://twitter.com/stratodean/status/335814231477846017]
[17:52] <Laurenceb__> http://epetitions.direct.gov.uk/petitions/43303
[17:55] <Randomskk> haha
[17:55] <Upu> lol
[17:55] <Upu> seriously
[17:55] <Randomskk> 2 signatures
[17:55] <Randomskk> nice
[17:56] <Upu> "according to two retired ESA managers this vehicle is impossible"
[17:57] <Upu> where is the button to tell Patrick Edwards he's a Daily Mail reading dickhead ?
[17:57] <griffonbot> Received email: Geoff Mather "[UKHAS] Re: Launch Announcement - STRATODEAN Two - 18/05/13
[17:57] <daveake> I looked but I see no such button
[17:57] <daveake> sadly
[17:58] <Upu> lol STS-3 back in the air :)
[17:58] <daveake> persistent :)
[17:58] <Upu> if at first you burst, launch launch again
[17:58] <daveake> lol
[17:59] <SP9UOB> Upu: now its 100g latex
[17:59] <Upu> have we heard anything from Stratodean ?
[17:59] <Upu> ah was going to ask Tom
[18:00] <SP9UOB> im going to consider buying chainsaw :-)
[18:00] <SP9UOB> my wife is scared....
[18:00] <SP9UOB> ;-)
[18:01] <Upu> lol
[18:01] <Upu> thats what I call a recovery kit
[18:02] <daveake> Just need a helicopter. One-stop-recovery-shop
[18:02] <SP9UOB> its out of the budget ;-)
[18:02] <daveake> :)
[18:03] <daveake> off for beer 'n' bbq
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[18:05] <Upu> STRATODEAN Two found and recovered! Thanks to all that supported and tracked us! Pics to follow once we have decent signal!
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[18:06] <griffonbot> @AnthonyStirk: RT @stratodean: STRATODEAN Two found and recovered! #ukhas [http://twitter.com/AnthonyStirk/status/335818713662115840]
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[18:13] <SpeedEvil> woo exclamation mark period
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[18:18] <SP9UOB> im on TV live ;-) https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-frc1/330927_664897476869351_683451300_o.jpg
[18:19] <SP9UOB> well, ot that was 2 weeks ago ;-)
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[18:26] <SP9UOB> radim_OM2AMR: is that red latex balloon ?
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[18:33] <iain-G4SGX> Is the optimum ascent rate for a latex balloon (if going for a float) higher than the foil 0.8m3/s?
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[18:42] <nigelvh> KT5TK-7_ still around?
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[18:51] <nigelvh> Your balloon seems to be in a very turbulent place.
[18:52] <arko> spinnin
[18:52] <iain-G4SGX> KT5 APRS telmetry seems a bit flakey, up and down and only one or two receivers max. Think the 70cms tracking works better.
[18:53] <nigelvh> I've been kind of ignoring the GPS values. The pressure readings corroborate that it's going up and down quite a bit.
[18:53] Nick change: heathkid|2 -> heathkid
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[18:55] <iain-G4SGX> Thermal updrafts possibly. Hot over there init? lol
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[18:56] <SP9UOB> radim_OM2AMR: chasing again :) ?
[18:56] <radim_OM2AMR> oh, we'll see :-D
[18:57] <SP9UOB> 2 flights and recovery in ode day - that would be record ;-)
[18:57] <SP9UOB> 2 flights and recovery in one day - that would be record ;-)
[18:57] <SP9UOB> radim_OM2AMR: is that red latex balloon ?
[18:57] <Randomskk> two flights and recoveries in a day isn't such a big deal ;)
[18:58] <radim_OM2AMR> SP9UOB, yes, 100g beritex, the same you have
[18:58] <SP9UOB> Randomskk: but its the same payload :-)
[18:58] <Randomskk> that is cool
[18:58] <SP9UOB> radim_OM2AMR: is doing very well - 22547m is fine to run tests :-)
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[18:59] <SP9UOB> sp9rqa: too late, it has burst
[18:59] <radim_OM2AMR> sure
[18:59] <SP9UOB> sp9rqa: but still in range, 438.018
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[19:03] <nigelvh> You're right though, something funny is going on with the GPS.
[19:03] <SP9UOB> radim_OM2AMR: forest again :-(
[19:04] <radim_OM2AMR> we put there two bateries this time, so it will transmit long
[19:05] <SP9UOB> radim_OM2AMR: anyway, You didnt tell me technical details of sonderkiller ;-)
[19:05] <radim_OM2AMR> fishing pole with blade at the end :-)
[19:06] <SP9UOB> radim_OM2AMR: how long?
[19:07] <radim_OM2AMR> depends on your needs
[19:08] <KT5TK-7_> When the GPS doesn't get a 3D fix it'll substitute the altitude with the pressure altitude. The pressure altitude formula returns too low values. If you look at the altitude graph at spacenear.us/tracker you'll see two curves drifting slowly away from each other. The upper one is the GPS data which is more correct.
[19:09] <nigelvh> Any guesses on why you're not getting 3d fixes?
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[19:12] <qyx_> sts3 landing nearly on the same place as previous flight
[19:14] <Geoff-G8DHE> Just come back up, am I in a time warp ? What's STS-3 doing but landing in the forest again ?
[19:15] <qyx_> its second flight with the same payload
[19:15] <arko> KT5TK-7_: was this meant to be a floater?
[19:15] <arko> (just woke up no idea whats going on)
[19:16] <fsphil> it's saturday
[19:16] <arko> what year?
[19:16] <Geoff-G8DHE> Ah no its Eurovision Contest night - Its a NIGHTMARE
[19:16] <fsphil> 20 something
[19:16] <SP9UOB> arko: 1965
[19:16] <arko> i still have a chance to go to the moon!
[19:16] <arko> spic
[19:16] <arko> epic*
[19:16] <SP9UOB> arko: internet will be invented in 30 years or so
[19:16] <fsphil> eurovision is a bit 1990
[19:16] <nigelvh> arko, yes, it's a 300g attempt at a floater.
[19:17] <arko> awesommeee
[19:17] <arko> good luck KT5TK-7_ !
[19:17] <arko> go transatlantic!
[19:17] <nigelvh> http://w5acm.net/b332.html
[19:18] <SP9UOB> ok sts-3 is out of my range
[19:18] <arko> woah nice!
[19:18] <qyx_> landed probably
[19:18] <radim_OM2AMR> trees
[19:18] <arko> nigelvh: how long was the antenna? what was the design?
[19:18] <nigelvh> Dunno.
[19:18] <arko> KT5TK-7_: ^ ?
[19:19] <arko> or i can ask later when he's not busy :P
[19:19] <arko> time to get coffee and start the day
[19:19] <nigelvh> BTW, don't trust the altitude reports. It substitutes an estimate based on pressure when it loses 3d lock, so you see it jump up and down in altitude a LOT.
[19:20] <nigelvh> 3d fix doesn't seem to be reliable for some reason.
[19:20] <SP9UOB> radim_OM2AMR: no luck with trees. My sputnik is propably still in the spruce
[19:20] <radim_OM2AMR> SP9UOB, Dano is still receiving signal, so its up :-(
[19:21] <qyx_> and its already dark out tere
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[19:30] <SP9UOB> night all
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[21:05] <Upu> ping KT5TK
[21:06] <nigelvh> Afternoon Upu, how's the weekend treating you?
[21:06] <Upu> very well thanks :)
[21:06] <Upu> just wondering how the flight went, is down accurate ?
[21:07] <nigelvh> It would look like it headed that direction.
[21:07] <Upu> he said he was having some issues with the GPS
[21:07] <nigelvh> It looked like it, but the pressure data was fine, and it indicates it's pretty low.
[21:09] <Upu> be interested to know if that was code or other
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[21:09] <nigelvh> Definitely. It sounded like it wasn't maintaining a good 3d fix, so it would revert to a guess at altitude from pressure.
[21:09] <nigelvh> Why would be very interesting to know.
[21:10] <Upu> I'm interested to know if it was using the MAX7C I sent him
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[21:10] <nigelvh> If it's the same board he took a photo of and shared, it's a max 6q
[21:11] <Upu> ok probably a n other issue or code then
[21:11] <nigelvh> http://kt5tk.files.wordpress.com/2013/05/pecanpico3.jpg
[21:13] <Upu> nice an dclear
[21:13] <Upu> that looks scary to solder
[21:13] <nigelvh> Time consuming, yes, all too terrible, no.
[21:14] <nigelvh> Thomas uses solder paste and a hot plate.
[21:14] <Upu> ok
[21:14] <Upu> why does he have 2 step ups again ?
[21:14] <nigelvh> Though I've done similar with a decent iron.
[21:14] <nigelvh> He wanted to separate power for the GPS so he could shut it off when not in use.
[21:14] <Upu> oh this is SI4464 based ?
[21:15] <nigelvh> That's what I'm curious about. I'm wondering if he was turning it off and it didn't have time to get a good fix.
[21:15] <nigelvh> Yes, it's 4464 based.
[21:15] <Upu> you can just use a Pchannel fet
[21:15] <Upu> and save yourself the money for the step up
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[21:15] <nigelvh> That's what I would do, but he didn't want the v losses.
[21:16] <Upu> wire vbatt to the battery as long as its < 3.8v
[21:16] <Upu> voltage losses ?
[21:16] <nigelvh> Yeah
[21:16] <Upu> where ?
[21:16] <nigelvh> In the fet
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[21:17] <Upu> not noticed it being an issue
[21:17] <nigelvh> (yes, I know they would be pretty small, but that's his choice)
[21:17] <Upu> the PAVA/ATLAS APRS had a FET on the GPS
[21:17] <Upu> not that I actually used it
[21:17] <Upu> other than to turn the GPS on
[21:18] <nigelvh> Yeah, I will probably put a fet on my next revision as well.
[21:18] <Upu> well it works
[21:18] <Upu> if you're doing APRS and TX every 2 mins
[21:18] <Upu> makes sense
[21:18] <nigelvh> In past I've just not been able to turn off the GPS, so it sucks power.
[21:18] <Upu> however MAX7C is 7mA ~ 3.3v in PSM
[21:18] <Upu> 1 se cyclic
[21:19] <nigelvh> Nice!
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[21:19] <Upu> however if you turn it on with battery backup, wait 5 secs , read it, turn it off, TX and then shut everything down
[21:19] <Upu> yes that may make a difference however we constant TX
[21:20] <nigelvh> Yeah
[21:20] <Upu> my dual transmitter payload
[21:20] <Upu> constant RTTY @ 10mW and APRS @ 300mW every 2 mins takes 68mA on average over 2 hours
[21:20] <Upu> about 44 hours per pair of AA's
[21:20] <nigelvh> Nice
[21:21] <Upu> unless your APRS PSU shorts out
[21:21] <Upu> then considerably less
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[21:21] <Upu> that one that landed in Austria had 30 mins battery left, was pulling constant 0.5A due to a short on the HX1 board
[21:21] <Laurenceb__> http://www.theflatearthsociety.org/forum/index.php/topic,30499.0.html#.UZfw4dfR6f4
[21:21] <nigelvh> That's part of why I'm really excited about the 4464 is the frequency range/power range. Turn down the power and set freq for an ISM RTTY transmission, and turn it up and change frequency for APRS all in one.
[21:22] <chrisstubbs> Upu was the short due to the board popping off, or a fault on the pcb?
[21:22] <Upu> yes I like the idea
[21:22] <Upu> not sure chrisstubbs
[21:22] <Upu> the ground plane wasn't soldered correctly
[21:23] <Upu> ground pad
[21:23] <Upu> but unsure if it had got hot enough to unsolder itself
[21:23] <Upu> bit wierd
[21:23] <Laurenceb__> http://www.theflatearthsociety.org/forum/index.php/topic,30499.msg854193.html#msg854193
[21:23] <Upu> ironically
[21:23] <Laurenceb__> omfg
[21:24] <Laurenceb__> these guys are 4 real
[21:24] <Upu> I think the overheating board warmed the RFM22B and coaxed it back into life
[21:25] <chrisstubbs> Hi tech heater
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[21:26] <Upu> lol
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[21:27] <chrisstubbs> did you stick any foam to the rfm for insulation?
[21:28] <Upu> yeah
[21:28] <Upu> lots
[21:28] <chrisstubbs> oh
[21:28] <chrisstubbs> was that the expandy foam? :P
[21:28] <Upu> yes
[21:28] <Upu> but I don't think that was the issue
[21:29] <Upu> http://ava.upuaut.net/?p=516
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[21:31] <Willdude123> Hello
[21:31] <Willdude123> Just looking at the arduino robot.
[21:34] <Willdude123> We should make a payload from one, and make it drive itself to the people trying to find it.
[21:34] <Willdude123> Might be a bit hard. :-)
[21:34] <chrisstubbs> unless it can drive down trees :P
[21:35] Action: chrisstubbs has an idea
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[21:35] <chrisstubbs> Its probably been suggested, but would a tree cutdown be a good idea
[21:35] <chrisstubbs> if it remains at the same height below 300m for say 10 mins, it fires itself
[21:36] <Willdude123> So a payload that could cut trees?
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[21:36] <chrisstubbs> that would be an interesting idea too
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[21:37] <Willdude123> Or one that cut itself free?
[21:37] <nigelvh> Upu, is there a reason not to attach the GPS's batt line to the main 3v3 line, because that won't shut off during the flight, only the fet to the main VCC of the GPS would.
[21:37] <chrisstubbs> but it could cut itself away from the parachute and balloon, which i expect if the primary cause of tree tangles
[21:37] <Willdude123> The arduino robot looks cool. I'd have no clue what to do with it.
[21:38] <chrisstubbs> aww its a little kit
[21:38] <Willdude123> Bit big to put in a payload.
[21:39] <Willdude123> Only 4 usable io pins
[21:39] <chrisstubbs> thats a little dissapointing
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[21:39] <chrisstubbs> half the fun is in designing your own robot anyway :)
[21:40] <Willdude123> Yeah. I might get one if it's a reasonable price, and modify it like hell.
[21:40] Nick change: Matt_soton -> mattbrejza
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[21:41] <chrisstubbs> I built a few versions of a robot thing with domlin. the first used a laptop and soem relays for basic forward/reverse/left/right control
[21:42] <Lunar_Lander> hello
[21:42] <chrisstubbs> used winscreen wiper motors and an SLA for power, redesigned it to use 433mhz and PWM control on arduino. But it went through mosfets at an incredible rate and the motors kicked out so much noise the radio control was next to useless
[21:43] <Upu> not that I can think of nigelvh
[21:43] <Upu> that should work
[21:43] <chrisstubbs> hello Lunar_Lander
[21:43] <Upu> hi Will
[21:43] <nigelvh> Ok
[21:44] <Lunar_Lander> how are you all?
[21:45] <Randomskk> too old :(
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[21:45] <Lunar_Lander> oh
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[21:49] <Willdude123> Hi upu
[21:49] <Willdude123> Alright?
[21:50] <Upu> yup not bad
[21:50] <Upu> just debating Seine Crossing or Kharg Island
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[22:03] <fsphil> Kharg sounds Klingon
[22:12] <arko> afternoon gentlemen
[22:17] <Lunar_Lander> Denmark seems to be winning
[22:18] <gb73d> yes
[22:18] <mfa298> I don't care that much about the scoring. The best bit is the sarcastic comments from Graham Norton.
[22:19] <Lunar_Lander> well
[22:19] <Lunar_Lander> the german guy talks about that we didn't deserve the bad voting results
[22:19] <Lunar_Lander> and he does it all the time
[22:20] <mfa298> We just had the comment about the UK probably not being able to win it now.
[22:20] <Lunar_Lander> xD
[22:21] <Lunar_Lander> Denmark won
[22:21] <mfa298> I think most of the UK knows we're never going to do well so it's more about making the best of it.
[22:21] <Lunar_Lander> yea
[22:22] <Lunar_Lander> someone wrote on twitter "Denmark won with irish music and Ireland is on the last place. Think about it"
[22:24] <Lunar_Lander> LOL 1 point from CH to germany
[22:24] <Lunar_Lander> XD "I love you Bonnie Tyler"
[22:24] <mfa298> and I think lots of celebrating for the 2 points they gave the UK.
[22:25] <Willdude123> Wooh.
[22:25] <Lunar_Lander> yeah
[22:25] <Lunar_Lander> Germany is on 21
[22:25] <Lunar_Lander> yeah
[22:25] <Lunar_Lander> that is what happens when you end cooperating with Stefan Raab
[22:26] <griffonbot> @arkorobotics: Testing HABEXpico for it's launch at @layer_one :-) #HAB #layerone2013 #UKHAS http://t.co/6ljCvtgN0d [http://twitter.com/arkorobotics/status/335884093042593792]
[22:26] <Lunar_Lander> and do you know what the problem is?
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[22:26] <Lunar_Lander> the viewers on the pre-vote voted for another band
[22:26] <Lunar_Lander> Cascada won because of Jury selection
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[22:33] <Lunar_Lander> german TV cut out while the Danish singer was singing the victory song
[22:35] <mfa298> We had lots of talking over it and the credits, I didn't really pay enough attention to see if they cut it off as well
[22:35] <Lunar_Lander> ah
[22:35] <Lunar_Lander> and then we had Lena singing
[22:36] <fsphil> did you spot General Zod?
[22:38] <Lunar_Lander> no
[22:38] <fsphil> http://metrouk2.files.wordpress.com/2013/05/ay_110061856.jpg
[22:42] <Lunar_Lander> xD
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[22:51] <Arithmetic> the real live pros: https://www.youtube.com/watch?v=Q8rz9T3fSW8
[22:51] <Arithmetic> europe's got that french gent who flies on such a wing`d edge. it's nice when musicians risk the same :)
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[23:02] <heathkid> 13 hours on ONE AA Energizer Ultimate Lithium! :) I'm pretty excited... yes... I know I need to get a balloon in the air one of these days.
[23:03] <Upu> any power saving in code heathkid ?
[23:05] <SpeedEvil> :-)
[23:07] <Upu> because if you haven't there is way more run time to come
[23:11] <qyx_> i am just curious, has anyone tried some other modulation than fsk?
[23:13] <arko> heathkid: whats the power consumtion?
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[23:26] <SpeedEvil> qyx_: it's not that much of an issue
[23:26] <SpeedEvil> qyx_: so, no.
[23:27] <SpeedEvil> 10mw can basically at 50 baud be picked up with pretty modest antennas over 500kn away
[23:27] <SpeedEvil> km
[23:28] <qyx_> i am asking because of power cunsumption
[23:28] <SpeedEvil> and, for just broadcasting position, that's fine
[23:28] <SpeedEvil> GPS will usually use as much as the transmitter
[23:28] <SpeedEvil> so reducing won't gain much
[23:28] <qyx_> you don't need 1s update rate
[23:29] <qyx_> some chipsets have reduced consumption
[23:29] <SpeedEvil> sure
[23:29] <qyx_> eg. mtk chipsets down to ~3mA, but havent tried that
[23:32] <SpeedEvil> and, well, once you are at a dozen hours on one AA cell, the use of much power reduction is questionable
[23:33] <SpeedEvil> for very small payloads, perhaps.
[23:33] <qyx_> you can go down with weight probably
[23:33] <qyx_> and use some coin shape lithium
[23:34] <SpeedEvil> AA lithium is around 13g IIRC
[23:34] <SpeedEvil> so any saving is quite small unless it's a really, really tiny payload.
[23:34] <SpeedEvil> also, even a small camera dwarfs the power use
[23:35] <Lunar_Lander> yeah 14.5 g
[23:35] <Lunar_Lander> :)
[23:35] <qyx_> thinking of small party baloon :X
[23:35] <qyx_> and 3g lithium batt
[23:36] <SpeedEvil> it's perhaps most interesting from the perspective of allowing higher data rates.
[23:36] <SpeedEvil> for really low weight, using the existing receiver network in more advanced ways may be interesting.
[23:37] <SpeedEvil> its plausible to do without the GPS, and still track.
[23:38] <qyx_> not so bad idea but it will require precise timing of receivers
[23:38] <qyx_> 1us makes 300m in ideal conditions
[23:38] <SpeedEvil> sure.
[23:39] <qyx_> correlating pseudonoise with gps receivers as time reference
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[23:39] <SpeedEvil> or just a beacon, and track phase
[23:39] <SpeedEvil> psuedonoise would have clear plusses, of course
[23:40] <qyx_> phase may be problem as you would probably need precise hw for reception
[23:40] <qyx_> as the filters also change phase
[23:41] <SpeedEvil> annoyingly http://www.ebay.com/itm/FE-5680A-Rubidium-Atomic-Frequency-Standard-Oscillator-Transceivers-10Mhz-Out-/270873476863 has gone up a bit in price
[23:41] <SpeedEvil> three of those, configured as reference clocks for the USB SDR thing, at different locations
[23:42] <gonzo_> and the rx sites would not get the signal at a known location, so no datum. And fading/nulls would cause loss of lock
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[23:42] <SpeedEvil> your datum is the launch site
[23:42] <Laurenceb__> i was interested in using spherics
[23:42] <SpeedEvil> and that
[23:43] <SpeedEvil> if there are external correlatable signals
[23:43] <SpeedEvil> then you can exploit those.
[23:43] <gonzo_> but most stations aquire the signal at a few km up
[23:43] <qyx_> i think rtlsdr is out of question because of buffering and other things
[23:43] <SpeedEvil> qyx_: buffering doesn't matter, you don't need a precise time reference
[23:44] <SpeedEvil> as long as you have a known rate
[23:44] <SpeedEvil> and it doesn't skip
[23:44] <qyx_> how do you want to compute the position?
[23:44] <chrisstubbs> hello Lunar_Lander
[23:44] <Lunar_Lander> hi chrisstubbs
[23:44] <chrisstubbs> oops
[23:44] <Lunar_Lander> so the UK was better than germany on ESC!
[23:44] <chrisstubbs> sorry said that earlier, IRC != python
[23:45] <SpeedEvil> what would be interesting would to roll a version of fldigi that juat recorded a wav too, and shipped to the server
[23:45] <SpeedEvil> to play with analysis for a given flight
[23:45] <SpeedEvil> using that flights transmissions as a reference clock
[23:45] <nigelvh> I want to know what they yanked that standard out of. It's pretty clear in the photo that they just chopped the board out of something.
[23:45] <SpeedEvil> yeah
[23:46] <SpeedEvil> nigelvh: I suspect old phone basestatikns
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[23:46] <nigelvh> Perhaps. I know they used a lot of Trimble Thunderbolt references at cell sites and have been surplussing them. I have one.
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[23:47] <nigelvh> GPSDO doesn't have the aging problems rubidium does.
[23:48] <SpeedEvil> true.
[23:48] <SpeedEvil> but few cheap units have nice outputs
[23:49] <nigelvh> Yeah, the thunderbolts are more expensive these days. I got a full kit with power supply and antenna for about $100 a few years back.
[23:51] Nick change: MichaelC -> MichaelC|Sleep
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[00:00] --- Sun May 19 2013