highaltitude.log.20101010

[00:04] <Darkside> mrrgh
[00:05] <Darkside> morning
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[00:51] <juxta> heya Darkside
[00:51] <juxta> i think a rest day is in order today :D
[00:51] <Darkside> heh yeah
[00:53] <Darkside> better get some metho from the store, so i can clean my circuit boards some more
[00:53] <juxta> good plan
[00:53] <juxta> supermarket will have it too if thats closer
[00:54] <Darkside> yeah that what i mean
[00:55] <juxta> i got an email from someone who wants to fly a packet radio relay aboard a balloon with us
[00:55] <juxta> woo
[00:55] <Darkside> heh
[00:55] <Darkside> i think next launch we should seriously look at proper waterproofing
[00:55] <Darkside> no matter where its predicted to land
[00:56] <juxta> hm
[00:56] <juxta> i dunno, i'm not too concerned
[00:56] <Darkside> i reckon if I had used duct tape to seal my box, it would have stayed dry
[00:56] <juxta> there's not much water around here
[00:56] <Darkside> heh
[00:56] <juxta> and stuff usually goes way inland
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[01:05] <juxta> ho hum
[01:05] <juxta> better order a new camera ey Darkside :P
[01:05] <Darkside> yup
[01:06] <juxta> luckily our dollar is strong
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[01:52] <juxta> hi vk5av
[01:57] <vk5av> hello
[02:08] <juxta> were you tracking horus 8 yesterday vk5av?
[02:09] <shenki> o/
[02:09] <juxta> heya shenki
[02:09] <juxta> how're you this morning?
[02:09] <shenki> juxta: yo. pulled up alright after the swim?
[02:09] <juxta> yup yup
[02:09] <shenki> excellent
[02:10] <juxta> how are your paddling arms? :P
[02:10] <shenki> bit of cramp in my right hand still, which is a bit strange. we'll be right tho
[02:10] <shenki> just watched F1 qauli; turns out it rained so much in japan yesterday that they postponed it to thismorning. good deal all round.
[02:10] <shenki> juxta: hows the writeup coming along?
[02:10] <juxta> haha :D
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[02:11] <juxta> well i just went through the photos
[02:11] <juxta> now I think i might have a nice warm shower
[02:11] <shenki> cool
[02:11] <juxta> i did have a bit of a lie in today, haha
[02:14] <DagoRed> Darkside: Every one of our payloas is sealed with duct tape.
[02:15] <juxta> heya DagoRed
[02:16] <juxta> shenki, looking at the photos of the trackin from adrian's car, looks like you guys had a bit of a hard time with the HF telemetry while moving?
[02:17] <shenki> juxta: yeah, initally we werent' keeping a close eye on it
[02:17] <shenki> when we realised that our car was the only one tracking it, we concerntrated a bit more
[02:17] <juxta> haha
[02:18] <juxta> we had it most of the time asides from when we had to change antennas
[02:18] <juxta> (well, the UHF, not the HF)\
[02:18] <shenki> but still had to adjust it every few minutes. not sure if that was necessary, or if it was just playing about as the signal faded due to trees
[02:18] <juxta> yeah the UHF moves about alot
[02:19] <juxta> i guess the HF would have been fairly stable?
[02:19] <shenki> had some software issues too, meaning we had to re-start things a few times
[02:19] <Darkside> vk5gh wasn't too experienced with fldigi :P
[02:19] <Darkside> i took over the front computer a few times to fix things
[02:19] <shenki> yeah, he did a good job with us shouting at him
[02:19] <juxta> haha
[02:19] <juxta> poor Grant
[02:19] <juxta> sorry Graham
[02:20] <juxta> looking at the footage though the fin did a great job
[02:20] <juxta> next time I may give it a larger V
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[02:20] <juxta> to keep it even more well pointed
[02:21] <shenki> yeah, the sweeping was a good effect i thought
[02:21] <juxta> much better than the usual fast spinning
[02:21] <shenki> only downside is you're always pointing into the wind, so you don't get a view of behind
[02:21] <shenki> tailcam!
[02:21] <juxta> hehe
[02:22] <DagoRed> Well, in either case congrats you guys for an exciting flight!
[02:22] <DagoRed> Did you guys get any pictures?
[02:24] <juxta> yeah, HD video footage
[02:24] <juxta> :)
[02:25] <Darkside> only 45 min tho :(
[02:25] <DagoRed> Hey, good enough.
[02:25] <DagoRed> I'm just glad you guys didn't float.
[02:25] <Darkside> well it did for a while..
[02:25] <Darkside> we were getting really worried for a while there
[02:25] <DagoRed> Yeah... that was bad.
[02:25] <DagoRed> You guys should look into our cutdown system.
[02:26] <juxta> yeah we have a cutdown
[02:26] <juxta> but it wasnt flown this time
[02:26] <DagoRed> ahh
[02:26] <juxta> DagoRed, here's the landing site:
[02:26] <juxta> http://www.bogaurd.net/horus8/DSC_2173.JPG
[02:26] <juxta> within a few mins the wind had dragged it out to sea
[02:26] <juxta> http://www.bogaurd.net/horus8/DSC_2186.JPG
[02:27] <DagoRed> wait, both?
[02:27] <Darkside> juxta: are you hosting that from your home?
[02:27] <juxta> here's the recovery team in action: http://www.bogaurd.net/horus8/DSC_2190.JPG
[02:28] <juxta> yeah that's here, hence the slow speed :P
[02:28] <Darkside> resize the images :P
[02:28] <DagoRed> And the fact I'm on the other side of the world isn't good either.
[02:28] <juxta> whoops didnt even think of that
[02:28] <Darkside> http://www.facebook.com/album.php?aid=94623&id=1144042127&l=4c5fc735d8
[02:28] <Darkside> or pick thumbnails off there
[02:28] <juxta> done
[02:28] <juxta> all reszed
[02:29] <juxta> ...perhaps a little too much, haha
[02:29] <Gnea> wow
[02:30] <DagoRed> wow
[02:30] Action: DagoRed now wants to live in australia
[02:31] <Darkside> lol
[02:31] <Gnea> Darkside: was Terry with you on the way there?
[02:31] <Darkside> i was in a different car
[02:32] <Gnea> but I mean, as part of the same group
[02:32] <juxta> yeah, I rolled up I guess 1 or 2 mins later?
[02:32] <Darkside> yeah i think so
[02:32] <Gnea> okay
[02:32] <Darkside> adrian basically yelled out over the radio for everyone to get down to the beach asap
[02:32] <juxta> we didnt hear that
[02:32] <juxta> but we were already on the way
[02:32] <shenki> i spotted it
[02:32] <juxta> we got the telemetry down to 50m
[02:32] <shenki> and jumped around like a madman in the middle of the road
[02:32] <juxta> refresh the pics if you like, i made them a bit larger now
[02:33] <shenki> mark and adrian made it down to the beach first
[02:33] <Darkside> juxta: matt had the telemetry when it was out at sea too :P
[02:33] <Gnea> I was sitting in my apartment watching the telemetry and saw the mark for horus doing 1km/h out toward the sea
[02:33] <juxta> haha
[02:34] <Gnea> that's when I figured "okay, someone's gonna get wet"
[02:34] <juxta> http://www.bogaurd.net/horus8/DSC_0341.JPG
[02:34] <Darkside> ah adrian and his maxtrax//
[02:34] <juxta> everybody assumed I had drowned so adrian tired to go out to save me ^^
[02:35] <Darkside> and failed
[02:35] <Darkside> i saw him capsize
[02:35] <Darkside> it was hillarious
[02:35] <Darkside> i didn't know how expensive the maxtrax were at the time
[02:35] <juxta> http://www.bogaurd.net/horus8/DSC_0349.JPG ... and fialed
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[02:37] <Gnea> so one guy tried to get out there with a kayak while juxta swam out? :)
[02:37] <Darkside> and then shenki got a real paddle and kayaked out
[02:37] <juxta> spectators: http://www.bogaurd.net/horus8/DSC_2196.JPG
[02:37] <shenki> juxta was out there, but not everyone knew he was a good swimmer
[02:37] <juxta> yeah shenki grabbed a real paddle and came out
[02:38] <juxta> lemme find pics
[02:38] <shenki> there were some locals on the beach who were concerned that he was drowning, and wanted to call the emergency services
[02:38] <Darkside> adrian almost called 000
[02:38] <Gnea> juxta: awesome
[02:38] <shenki> one of them came down with the paddle for the kayak, so i went out
[02:38] <shenki> there was a huge offshore wind, so paddling was hard going
[02:38] <juxta> shenki camer out and met me about half way back
[02:38] <juxta> came
[02:38] <juxta> http://www.bogaurd.net/horus8/DSC_0408.JPG
[02:39] <juxta> evidently the kayak did not appreciate 2 passengers so I swam back in
[02:39] <shenki> but not has hard going as juxta was having trying to drag the sea anchor, aka the payloads, as he swim
[02:39] <shenki> yeah
[02:39] <Darkside> those kookaburra kayas are awesome tho
[02:39] <shenki> heh, that was very unstable wiht you on the back
[02:39] <juxta> well look at it, it was half under water, haha
[02:39] <shenki> when i wasn't knocking you with the paddle, it was almost tipping over
[02:39] <Darkside> heh
[02:40] <juxta> http://www.bogaurd.net/horus8/DSC_0415.JPG
[02:40] <juxta> i tied the line to the back of the kayak and shenki towed it in the rest of the way
[02:41] <shenki> it looks calm and relaxing in the photos
[02:41] <juxta> it does hey
[02:41] <juxta> haha
[02:41] <juxta> it was a bit rough in near the shallows though
[02:41] Action: DagoRed found his payload that is water proof and strong
[02:41] <juxta> very strong rips near the shore too
[02:42] <shenki> DagoRed: it would have been interesting if we had a boat, and were able to pluck the payload out of the water
[02:42] <shenki> instead of drag it for a few 100 meters
[02:42] <juxta> yeah
[02:42] <shenki> they might have stayed a bit drier that way
[02:43] <juxta> as we dragged it along it was pulled under water
[02:43] <Darkside> well, yours was :P
[02:43] <juxta> the camera payload had no chance with its lens opening
[02:44] <DagoRed> Actually there is a way.
[02:44] <DagoRed> We use plexy glass on ours and seal the edges.
[02:44] <juxta> sure, build a watertight payload
[02:45] <Darkside> juxta: got a FM radio?
[02:45] <Darkside> 102.3MHz
[02:45] <juxta> ehm
[02:45] <juxta> lemme go car
[02:45] <juxta> brb
[02:46] <juxta> ... fuck yu
[02:46] <juxta> you
[02:46] <Darkside> hhahahahaha
[02:46] <Darkside> ahhhhhhh
[02:46] <Darkside> you didn't need to run to your car :P
[02:46] <Darkside> never gonna make you cry
[02:46] <Darkside> never gonna say goodbye
[02:47] <Darkside> neer gonna tell a lie
[02:47] <juxta> who listens to 102.3 anyway
[02:47] <Darkside> and hurt you
[02:47] <Darkside> no idea
[02:47] <juxta> you, obviously :P
[02:47] <Darkside> i just got told about it on IRC
[02:47] <DagoRed> Darkside: Nice!
[02:48] <juxta> i feel bad about Adrian losing that maxtrax
[02:48] <Darkside> and his glasses :(
[02:48] <juxta> oh yeah
[02:48] <juxta> hmm, the maxtrax is a bit cheaper than I though
[02:49] <juxta> 300 bucks
[02:49] <juxta> i'll have a chat to everybody and see if everyone will chip in and replace them
[02:51] <DagoRed> He lost his glasses?
[02:51] <juxta> yeah those too
[02:52] <DagoRed> How do you lose your glasses?
[02:52] <Darkside> go underwater with them on
[02:52] <Darkside> they can slip off
[02:52] <juxta> wear them in the ocean on a kayak then get capsized by a wave
[02:52] <juxta> that'll do it
[02:53] <DagoRed> You never go on water with glasses...
[02:53] <juxta> if you cant see them without them you do
[02:53] <Gnea> at least not without something to keep them on your neck
[02:53] <juxta> i think we can excuse him given that it was in an attempt to rescue me ;p
[02:53] <DagoRed> Pockets are amazing... thats how I do it. Put them on only for finding a heading and pocket them.
[02:54] <Gnea> yeah, the cause was justified
[02:54] <DagoRed> Fuck that, someone can drown. I'm NOT going blind.
[02:55] <juxta> lolwhut
[02:55] <juxta> glasses can be replaced
[02:56] <DagoRed> True... thats why you leave them on the shore.
[02:56] <DagoRed> Don't you Australians play Marco Polo at all?
[02:56] <Darkside> DagoRed: in this situation adrian was in kind of a hurry
[02:57] <Darkside> i.e. 'oh shit, terry is out at sea, we can't see him at all crap whats happened'
[02:58] <DagoRed> Ok... next question is where did the boat come from?
[02:58] <Darkside> random people on the beach
[02:58] <juxta> it was on the beach
[02:58] <Darkside> they let us use it
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[02:58] <juxta> good luck going into water like that without glasses if you need them, you'd be tossed by a wave in seconds, it's not a swimming pool
[02:58] <juxta> heya natrium42
[02:58] <Darkside> they saw the balloon fly over
[02:58] <DagoRed> juxta: Well aware.
[02:59] <natrium42> hi juxta
[02:59] <natrium42> i read the backlog, crazy stuff :D
[02:59] <juxta> haha
[02:59] <natrium42> you must be a very good swimmer
[02:59] <natrium42> 1km in the ocean
[02:59] <juxta> I think we gave your tracker a bit of a workout yesterday ;p
[02:59] <natrium42> :D
[02:59] <DagoRed> That was so awesome to watch
[03:00] <Darkside> was interesting in the cars
[03:00] <DagoRed> juxta: For our next flight we'll hopefully have something ready.
[03:00] <Darkside> i couldn't get it to load, so we were going off what we heard on the radio, and what shenki iwas seeing on IRC
[03:00] <juxta> JS did not like plotting 32,000 positions
[03:00] <Darkside> i.e. we heard juxta say that it had popped, but we had lost telemetry at that point
[03:00] <juxta> we were stoked when it popped
[03:01] <Darkside> but shenki was on IRC, and could see all you guys saying where it would land
[03:01] <juxta> as we were just about to give up
[03:01] <Darkside> nah
[03:01] <DagoRed> telementry always dies out on burst
[03:01] <Darkside> it woudl have gone from hoping that it pops, to hoping that it pops over KI
[03:01] <Darkside> DagoRed: nah
[03:01] <Darkside> it didn't
[03:01] <juxta> yeah, that was what we hoped too
[03:01] <juxta> we didnt lose telemetry either
[03:02] <juxta> except when it passed over us and we were in the null
[03:02] <Darkside> yeah thats probably what happened to us
[03:02] <Darkside> VK5OI had HF all the way through though
[03:02] <juxta> yeah
[03:02] <Darkside> he was probably the most consistent telemetry reporter :P
[03:02] <juxta> hehe
[03:02] <Darkside> man im so glad that worked
[03:03] <Darkside> once i have a board i think i'll coat it in selastic or something :P
[03:03] <Darkside> then fly that
[03:03] <juxta> natrium42, a few pics up if you like: www.bogaurd.net/horus8
[03:03] <juxta> out of order though
[03:03] <Darkside> juxta: rename them :P
[03:03] <Darkside> 1 2 3 4 5
[03:03] <juxta> all this effort
[03:03] <Darkside> :P
[03:04] <juxta> done
[03:05] <Darkside> add some launch pictures :P
[03:05] <Darkside> i can give you numbers :P
[03:05] <juxta> i still havent had that shower
[03:05] <Darkside> heh
[03:05] <Darkside> ok go do that..
[03:06] <juxta> here goes the helicopter payload http://www.bogaurd.net/horus8/launch1.JPG
[03:07] <juxta> http://www.bogaurd.net/horus8/launch2.JPG
[03:09] <DagoRed> Helicopter payload?
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[03:29] <natrium42> nice pics!
[03:42] <juxta> thanks natrium42
[03:42] <juxta> I thought it looked a little like a helicopter with the tail DagoRed :)
[03:43] <DagoRed> What was the point?
[03:44] <juxta> keep the payload pointing in one direction
[03:44] <juxta> as it was flying video
[03:44] <DagoRed> Ahh, you do know that won't work at higher altitudes though right?
[03:45] <natrium42> did video work?
[03:45] <juxta> as the air density drops off I guess not
[03:45] <DagoRed> natrium42: They got 45 minutes worth. Not too shabby.
[03:45] <natrium42> cool
[03:45] <juxta> we must have had some serious jet stream though, we were moving along at 100km/h (60mph) at 32km altitude
[03:46] <juxta> natrium42, due to an oversight (SD card was formatted as FAT32, whoops), recording cut out at 42 mins :(
[03:46] <juxta> we had enough battery and storage space for about 4.5 hous of 1080p footage though
[03:47] <natrium42> ah :S
[03:47] <natrium42> does it support exFAT?
[03:47] <juxta> dont know, I think it does NTFS though
[03:48] <juxta> it's supposed to start a new file when it passes 4gb, but it didnt seem to
[03:48] <juxta> will need some more testing there
[03:49] <juxta> hmm, seems like it might be a firmware issue with the goproHD & 32gb SD cards
[03:59] <DagoRed> ext2!!
[04:00] <juxta> heh, don't think it supports ext2 :(
[04:01] <DagoRed> ZFS
[04:02] <juxta> yeah I'm thinking unlikely ;p
[04:02] <juxta> bbs
[04:04] <DagoRed> Clearly you need a new camera now.
[04:04] <DagoRed> j/k
[04:17] <juxta> as it turns out I do
[04:17] <juxta> it's not entirely compatible with seawater 1.0 it seems
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[05:58] <jcoxon> morning all
[06:00] <Darkside> juxta: heh grant is out filming
[06:01] <juxta> heya jcoxon
[06:01] <juxta> yeah shame it didnt pan out for him Darkside :(
[06:01] <Darkside> yeah :(
[06:01] <Darkside> need to perfect a cutdown device
[06:02] <jcoxon> juxta, Darkside congratulations on the launch and recovery :-)
[06:02] <juxta> hehe, thanks jcoxon
[06:02] <juxta> was not without some discomfort, haha
[06:02] <Darkside> +1
[06:02] <Darkside> fuking soldering ison soooo close to my laptop atm
[06:02] <Darkside> argh
[06:02] <Darkside> need to get a proper soldering station
[06:04] <Darkside> juxta: discomfort, i.e. you almost getting hypothermia
[06:05] <jcoxon> juxta, so that rocky style training you do everyday paid off
[06:05] <juxta> looks like it ;p
[06:06] <juxta> some pics here if you like jcoxon
[06:06] <Darkside> lol
[06:06] <juxta> www.bogaurd.net/horus8
[06:06] <juxta> the kayak was sent when i was presumed dead
[06:07] <Darkside> nah, not presumed dead
[06:07] <Darkside> we just couldn't see you
[06:07] <juxta> the wind caught the chute and blew it out quite quick
[06:07] <jcoxon> yeah i grabbed that link from the logs
[06:07] <Darkside> then scott got out his lens and searched fr you
[06:07] <juxta> oh righto :)
[06:07] <Darkside> scott eventually spotted tou
[06:07] <Darkside> you
[06:07] <jcoxon> so it looked like a bit of a floater at one point
[06:07] <juxta> yeah
[06:07] <juxta> it was
[06:07] <juxta> reached float at 32km
[06:08] <jcoxon> how long did it float for?
[06:08] <juxta> close to an hour I think
[06:08] <jcoxon> oh right
[06:08] <juxta> all the while moving at 100km/h
[06:08] <jcoxon> any ideas why?
[06:08] <juxta> yeah, it was underinflated
[06:08] <juxta> I guess it just reached equilibrium with the air density
[06:08] <jcoxon> any damage before launch?
[06:09] <Darkside> hehe
[06:09] <juxta> no damage as such prior to launch
[06:09] <Darkside> juxta: :P
[06:09] <juxta> but we did loose some gas from the balloon, whoops
[06:09] <Darkside> that was both scary and hillarious at the same time
[06:09] <juxta> lose*
[06:10] <juxta> Darkside, do you know where my socks went?
[06:10] <Darkside> no idea
[06:10] <Darkside> probably in the back of adrians car
[06:11] <Darkside> ahh shit yeah, i need to get the IQ dumps from his SDR at some point
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[06:12] <juxta> that float situation was very inconvenient
[06:13] <juxta> had it burst even a few moments later we would have lost it
[06:13] <Darkside> yeah
[06:13] <Darkside> damm i want one of those SDRIQs :P
[06:13] <Darkside> they look awesome
[06:13] <juxta> yeah I wouldnt mind one wither
[06:13] <juxta> now, I've gotta go have some lunch and head off
[06:13] <juxta> catch you later :)
[06:14] <Darkside> cya
[06:14] <jcoxon> Darkside, do you have a pic of your HF payload circuits
[06:14] <jcoxon> (before launch)
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[06:18] <Darkside> jcoxon: yeah hold on
[06:18] <Darkside> i really need to get a dedi again...
[06:18] <Darkside> so i actually have somewhere i can upload shit to
[06:18] <jcoxon> flickr!
[06:18] Action: jcoxon really hopes his pcbs arrive this week
[06:18] <Darkside> lol
[06:19] <jcoxon> sure they maybe cheap to get made but the wait is painful
[06:20] <Darkside> http://imgur.com/Gqgso.jpg
[06:21] <jcoxon> ping nathan7
[06:21] <jcoxon> oops
[06:21] <jcoxon> wrong person
[06:27] <jcoxon> any one got a spot satellite transmitter here?
[06:28] <jcoxon> know if a secondhand one can be re-registered?
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[08:34] <earthshine> morning
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[09:06] <rjharrison_> ping juxta
[09:06] <rjharrison_> swimming lessons paid off then :)
[09:07] <nathan7> :o
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[10:21] <m1x10> very cool view: http://www.nasa.gov/multimedia/isslivestream.asx
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[10:39] <juxta_> ping rjharrison_
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[11:11] <juxta_> ping Darkside
[11:19] <Darkside> hey juxta_
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[11:21] <juxta_> hey Darkside
[11:21] <Darkside> sup
[11:22] <juxta_> arr bbr
[11:22] <juxta_> brb
[11:22] <Darkside> lol
[11:24] <juxta_> helping with stats, oh how terrible! :'(
[11:24] <juxta_> hey i'm doing the writeup for horus 8 Darkside, do you have any details you want me to put in?
[11:24] <juxta_> (ie re your payload or youself?)
[11:25] <Darkside> uhmm
[11:25] <Darkside> prototype hf payload for a university project
[11:26] <Darkside> apart from that, dunno
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[11:28] <Laurenceb> http://www.theregister.co.uk/2010/10/06/paris_main_payload/
[11:28] <Laurenceb> this is rediculous
[11:28] <Laurenceb> as is my ridiculous spelling
[11:29] <Darkside> lol
[11:29] <Darkside> paper aircraft
[11:29] <Darkside> oh yeah juxta_
[11:29] <Darkside> me and a friend want to make a autonomous parkzone radian model glider
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[11:29] <Darkside> if we can make it strong enough, we'd like to launch it from a great height :)
[11:30] <Darkside> probably not 32km up, but maybe a few km
[11:30] <Darkside> then it will glide home :)
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[12:35] <shenki> Darkside: you should build a gilder that is controlled by the simulator
[12:36] <Darkside> lol
[12:36] <Darkside> live video streaming
[12:36] <Darkside> and you feel what it feels in teh simulator :D
[12:36] <Darkside> live video is hard, but possible
[12:36] <Darkside> it would weigh down the glider wuite a bit with the batteries
[12:36] <shenki> hrm, yeah, that part would be hard. you'd have to just send gps coords + direction, and use google earth for visuals
[12:36] <Darkside> heh
[12:36] <Darkside> doable..
[12:37] <shenki> but transmit enough params from the glider such that you can control the simulator
[12:37] <Darkside> ah well
[12:37] <Darkside> yeah you could transmit acceleration, etc
[12:37] <Darkside> problem is for it to be realistic, you need to transmitthem fast
[12:37] <Darkside> like, real fast
[12:37] <shenki> two-way comms with real time requirements, would be interesting from the RF side
[12:38] <Darkside> yeah..
[12:38] <Darkside> would be hard..
[12:41] <jonsowman> Darkside: can I clear your data from the tracker?
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[12:44] <Darkside> jonsowman: sure
[12:44] <jonsowman> thanks
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[14:03] <Laurenceb> http://i.imgur.com/5DAjg.png
[14:03] <Laurenceb> perfect :D
[14:03] <Laurenceb> thats a histogram of signal output power
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[14:09] <SpeedEvil> output poweR?
[14:09] <SpeedEvil> rfrom what?
[14:09] <SpeedEvil> Oh - you have 2?
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[14:11] <Laurenceb> theres two output registers for I and Q
[14:12] <Laurenceb> from the onboard DSP filter
[14:12] <Laurenceb> just took historgram of sqrt(I^2+Q^2)
[14:12] <SpeedEvil> I mean - what's the signal soruce
[14:12] <Laurenceb> noise - no ant attached
[14:13] <SpeedEvil> the histogram of the fft?
[14:14] <SpeedEvil> How many khz is that to -3dB? Or what's the 0-100 bandwidth
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[14:43] <Northgate> Hello all, we did our first launch on friday and it was a complete success
[14:43] <Northgate> 2000 photos were taken, as well as temperature, altitude and location readings
[14:44] <earthshine> From where ?
[14:44] <fsphil> congratulations :) do you have a project website?
[14:44] <Northgate> From Ipswich
[14:45] <earthshine> You did a launch on Friday from the UK ?
[14:45] <Northgate> in the process of putting together a website for it
[14:45] <Northgate> yes friday UK
[14:45] <earthshine> How come it was not announced here ?
[14:45] <Northgate> sorry about that
[14:46] <Northgate> there is a video of the opening of the capsule on youtube if anyone would like that link
[14:46] <earthshine> ok
[14:47] <Northgate> http://www.youtube.com/watch?v=6uO_FCJ7mPk
[14:47] <fsphil> just curious, how did you track and recover the payload?
[14:47] <Northgate> There was a nokia on board with GPS enabled and it sent its location to phonelocator.org every minute
[14:48] <earthshine> whilst it was below the receiving altitude only of course
[14:48] <earthshine> Should have used a 433MHz transmitter - that way you could have followed it throughout the entire flight and we could have helped to track it for you
[14:49] <earthshine> and you get the benefit of being able to see it in flight on spacenear.us
[14:49] <Northgate> was on a tight budget
[14:49] <earthshine> Would have cost about the same as your Nokia and GPS ;)
[14:49] <fsphil> grrr, talk talk ... video buffering ... very slloooowwwly
[14:50] <earthshine> that phoen is worth a lot more than a 433MHz transmitter
[14:50] <Northgate> the nokia was free as it was my old one!
[14:50] <fsphil> haha
[14:50] <earthshine> as long as you get it back ;)
[14:50] <Northgate> yeah
[14:50] <Northgate> thankfully
[14:51] <earthshine> With a trasnitter it can be tracked in flight - with a phone you only get a signal once the balloon bursts and it drops to a much lower level
[14:51] <fsphil> so you don't know the altitude? did the phone log it?
[14:51] <Northgate> next launch, may try a 433mhz transmitter, always up for trying something new
[14:51] <earthshine> Yeah how do you know what height you got to ?
[14:51] <fsphil> there'll be no shortage of people here to listen for your signal, if you give us a few days warning
[14:52] <Northgate> we will know the altitude this week sometime, i need a database dump from the tracking website, and have asked them for this
[14:52] <earthshine> what tracking website ?
[14:52] <Northgate> phonelocator.org
[14:52] <earthshine> but you wont have any data once it is out of range of the cell
[14:52] <earthshine> a phone wont work at 100k feet
[14:53] <Northgate> but the gps will as its still below the satelittes
[14:53] <fsphil> that url just brings be to a search leach page
[14:53] <fsphil> gps will, but the phone won't have reported it
[14:53] <earthshine> What GPS did you use?
[14:54] <Northgate> the phone stores the gps location while it has no signal and sends all the saved positions once it regains signal
[14:54] <earthshine> I can assure you that the gps in a phone will not work at that altitude
[14:54] <fsphil> depends on the gps though, some will some won't
[14:54] <earthshine> You need specialist GPS units
[14:55] <earthshine> yeah but not the one in a phone
[14:55] <Northgate> well if it doesnt then we have no way of knowing the alt, simples
[14:55] <earthshine> what a shame
[14:55] <earthshine> was this a rush job project ?
[14:55] <fsphil> how long was it up?
[14:55] <Northgate> it wasnt rushed but it was just me doing the whole thing
[14:56] <Northgate> it was up for 4 and a half hours
[14:56] <Northgate> going by the time stamps of the photos
[14:56] <fsphil> yikes
[14:56] <fsphil> how far did downrange did it land?
[14:57] <earthshine> oh well - you'll know next time to use a transmitter and proper GPS
[14:57] <Northgate> well it was launched from ipswich and landed just above norwich
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[14:58] <fsphil> not bad -- I'd have expected it to drift further for such a long flight but the winds must have been low that day
[14:58] <earthshine> I'm surprised you got permission from the CAA to launch it from there
[14:58] <fsphil> you're lucky it didn't take a swim :)
[14:58] <Northgate> they were very good abit it, and wattisham ATC wished us luck at launch
[14:58] <Northgate> *about it
[14:58] <earthshine> Must have taken ages to get that permission
[14:58] <earthshine> there's an airport near there isn't there?
[14:59] <Northgate> norwich yes, closest aerodrome to ipswich was wattisham
[14:59] <fsphil> that's good to hear -- I haven't had any contacts with an ATC yet
[15:00] <Northgate> our launch permit said that we had to call ATC an hour before launch
[15:00] <earthshine> cool
[15:00] <fsphil> hehe, mine says I have to call 12 hours before
[15:00] <Northgate> bimey!
[15:01] <earthshine> Well done for getting it back. With just a phone you were lucky it worked.
[15:01] <fsphil> it sounds like you had a great day
[15:02] <Northgate> yeah it was pretty awesome
[15:02] <fsphil> (half way through buffering that video)
[15:02] <earthshine> so when are you posting up the images?
[15:02] <Northgate> it'll be this week definitely
[15:02] <Northgate> got to pick the best out of 2000
[15:03] <earthshine> When it is ready would you mind posting it on our mailing list?
[15:03] <Northgate> not at all
[15:03] <earthshine> http://groups.google.com/group/ukhas
[15:04] <Northgate> ok bookmarked
[15:05] <earthshine> cool
[15:06] <fsphil> it's a well sealed payload
[15:07] <Northgate> :)
[15:08] <earthshine> So how did you predict where it would land ?
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[15:08] <Northgate> the landing predictor of habhub,org
[15:09] <earthshine> oh thats the CUSF one
[15:09] <Northgate> yeah
[15:14] <DanielRichman> Where's griffonbot gone...
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[15:14] Action: griffonbot is GriffonBot [http://github.com/ssb/griffonbot]
[15:14] Action: griffonbot is following: #arhab #ukhas #cusf
[15:14] Action: griffonbot is tracking emails sent to ukhas@googlegroups.com
[15:14] <DanielRichman> http://pastebin.org/107998
[15:17] <fsphil> Northgate, the balloon was still inflated on landing?
[15:17] <sbasuita> DanielRichman: odd
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[15:17] <DanielRichman> sbasuita: tweetstream catches errors and re-emits them as tweetstream.ConnectionError
[15:17] <DanielRichman> which we catch
[15:17] <DanielRichman> however:
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[15:17] <DanielRichman> >>> issubclass(httplib.BadStatusLine, (urllib2.HTTPError, urllib2.URLError))
[15:18] <DanielRichman> False
[15:18] <DanielRichman> it therefore was not caught
[15:18] <Northgate> we used two balloons
[15:19] <earthshine> why?
[15:20] <Northgate> because of a calculation error, the first balloon did not have enough helium to take off, so the spare balloon was inflated and attached too
[15:20] <earthshine> You are very lucky it didn't just float off over the sea
[15:21] <Northgate> i know
[15:21] <earthshine> the intention is always for the balloon to burst
[15:21] <Northgate> afew lessons learned from this one
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[15:23] <earthshine> you should read the UKHAS wiki - tells you everything you need to know about a launch and tracking
[15:24] <Northgate> thanks
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[16:07] Nick change: Upu -> [STAR]Atanyi
[16:07] Nick change: [STAR]Atanyi -> Upu
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[16:36] <m1x10> I got my homemade aprs receiver working but it does not work my aprs transmitter!
[16:36] <Dan-K2VOL> Afternoon
[16:37] <m1x10> hi
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[16:40] <Dan-K2VOL> there's always a ton of lurkers here
[16:41] <Dan-K2VOL> do they just log the channel and read it later?
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[16:43] <jcoxon> on call finished
[16:43] <griffonbot> Received email: Earthshine Electronics <mikemcr68@googlemail.com> "Test Post"
[16:43] <jonsowman> Dan-K2VOL: yeah I wondered that
[16:43] <jcoxon> evening all
[16:43] <Dan-K2VOL> evening James
[16:43] <jcoxon> hey Dan
[16:43] <jonsowman> evening
[16:43] <jcoxon> long time
[16:44] <Dan-K2VOL> yes indeed! though I hear you've met Brad, Auph
[16:44] <Dan-K2VOL> Zuph
[16:44] <jcoxon> yeah he was on here
[16:44] <jcoxon> hope he reported back that we were friendly :-p
[16:44] <Dan-K2VOL> oh yah
[16:44] <jcoxon> hows the trans-a going?
[16:45] <Dan-K2VOL> very very busy, working on stuff at the workshop right now
[16:45] <jcoxon> wow
[16:45] <jcoxon> didn't think you'd jump back in to trans-a balloons
[16:45] <jcoxon> :-)
[16:45] <Dan-K2VOL> Ha me either
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[16:45] <jcoxon> you guys thinking of HF again then?
[16:45] <Dan-K2VOL> But I had a few years to recharge
[16:45] <jcoxon> had a quick browse of your wiki
[16:46] <Dan-K2VOL> and a larger group of people to help this time
[16:46] <jcoxon> yeah that helps
[16:46] <Dan-K2VOL> we're evaluating HF vs all-satellite right now
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[16:46] <jcoxon> pah if atlantic halo actuallly moved forward...
[16:46] <Dan-K2VOL> it'll definitely have satellite, but the question is can we afford to send all science data over it, or do we need to send science data via HF
[16:46] <jcoxon> yeah
[16:47] <jcoxon> tis a tough one
[16:47] <jcoxon> well you are welcome to use the spacenear.us system
[16:47] <jcoxon> and dl-fldigi
[16:47] <Dan-K2VOL> thank you
[16:47] <jcoxon> its there to be used
[16:47] <Dan-K2VOL> did brad tell you about the Digi m10 sat modem?
[16:47] <jcoxon> only a little
[16:47] <jcoxon> that you've worked some magic
[16:48] <jcoxon> i saw these when they came out
[16:48] <jcoxon> typically they were very restrictive on info iirc
[16:48] <Dan-K2VOL> it's an awesome solution for telemetry, and the monthly data rate isn't bad at all
[16:48] <Dan-K2VOL> yes they are, but we got through to the right people at Digi and Orbcomm (the sat provider)
[16:48] <jcoxon> good work
[16:48] <Dan-K2VOL> The modem costs $150US
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[16:49] <jcoxon> good for a sat modem
[16:51] <Dan-K2VOL> data is very reasonable, as long as you're ok with very frugal data. 3KB per month is very cheap
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[16:55] <fsphil> that's about 100 bytes per day
[16:56] <Dan-K2VOL> well, if you have 30 day long balloon mission :-)
[16:59] <fsphil> haha, true enough
[17:00] <fsphil> about 64 bytes per hour for a two day flight
[17:00] <fsphil> should be enough for updates
[17:00] <Dan-K2VOL> yep!
[17:02] <natrium42> 6 bytes are needed for lat+lon
[17:02] <gb73d> met a guy using a hand held 3 ele yagi on a hilltop
[17:02] <natrium42> so that's 10 reports per hour
[17:02] <gb73d> he was tracking birds
[17:02] <Dan-K2VOL> hey Alexei
[17:02] <Dan-K2VOL> nice
[17:02] <gb73d> fitted with 2mW beacons
[17:02] <natrium42> hi dan :)
[17:03] <natrium42> well, i forgot about alt
[17:03] <natrium42> so then 7 bytes for position
[17:03] <fsphil> 2mw -- sweet
[17:03] <gb73d> does that count as highaltitude ? :)
[17:03] <Dan-K2VOL> since the sat messages are guaranteed delivery, you can use keyframes and then deltas
[17:03] <gb73d> yes 173 mhz cw pulsed 0.7 sec
[17:03] <natrium42> oh they are? cool
[17:04] <fsphil> nifty
[17:04] <gb73d> yeah amazing stuff
[17:04] <gb73d> im gonen get signals from red kites
[17:06] <natrium42> birds are amazing --> http://www.youtube.com/watch?v=p-_RHRAzUHM
[17:07] <fsphil> hmm... the 817 can't tune to 173.205mhz
[17:07] <natrium42> no robot can do navigation like that yet
[17:08] <jcoxon> 10g turn!
[17:08] <gb73d> hey wow that video
[17:09] <Dan-K2VOL> definitely very cool
[17:11] <Dan-K2VOL> wow that goshawk collision avoidance is incredible
[17:12] <natrium42> yeah
[17:31] <earthshine> Amazing video
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[18:12] <jcoxon> ping fsphil
[18:13] <fsphil> 'lo jcoxon
[18:14] <jcoxon> you free tomorrow evening for a irc/skype meeting?
[18:14] <jcoxon> or would thurs be better?
[18:14] <Upu> any time for me really jcoxon
[18:15] <fsphil> either or, any day but wednesday
[18:15] <jcoxon> was going to suggest tomorrow evening - say 20:00 UTC
[18:15] <Upu> 19:00 UK time ?
[18:15] <fsphil> 21:00
[18:15] <jcoxon> we are +1
[18:15] <Upu> oh thats fine
[18:16] <Upu> yep
[18:16] <fsphil> no problem here
[18:16] <jcoxon> cool
[18:16] <jcoxon> will email round
[18:18] <m1x10> fsphil, sorry to ask again, when you are flying u said?
[18:19] <fsphil> next weekend if the weather and prediction are ok
[18:19] <m1x10> do u decide for the NOTAM?
[18:19] <fsphil> the notam lasts until sunday
[18:20] <fsphil> after that I have to re-apply
[18:20] <m1x10> wait
[18:20] <m1x10> notam gives you a time range?
[18:20] <fsphil> yea
[18:20] <m1x10> not a specific datetime?
[18:20] <fsphil> depends on what you ask for
[18:20] <m1x10> thats cool
[18:20] <fsphil> it could be one day if you only need that
[18:20] <m1x10> how big can that range be?
[18:20] <fsphil> not sure
[18:21] <jcoxon> churchill had 6months
[18:21] <m1x10> oh
[18:21] <m1x10> that is cool
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[18:42] <natrium42> so, in other news
[18:42] Action: natrium42 got engaged
[18:44] <SpikeUK> natrium42 Congratulations!
[18:44] <natrium42> thank you :)
[18:44] <SpikeUK> NP!
[18:46] <natrium42> http://lh4.ggpht.com/_jQdVCwPSCb0/TB2h6wjniuI/AAAAAAAACdg/SO3WNJg2_-g/s800
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[18:51] <fsphil> whoa, congrats :)
[18:51] <natrium42> thanks fsphil :)
[18:52] <Dan-K2VOL> oh congrats indeed natrium42!
[18:52] <natrium42> cheers :)
[18:58] <m1x10> oh natrium42
[18:58] <m1x10> Congragulations
[18:58] <SpeedEvil> Congrats! :)
[18:58] <m1x10> very nice couple
[18:59] <natrium42> thanks guys :)
[18:59] <m1x10> im happy
[18:59] <m1x10> just for you
[18:59] Action: DagoRed missed something
[18:59] <m1x10> lol
[18:59] <m1x10> how old r u?
[19:01] <DagoRed> What is natrium42 getting congradulated on?
[19:01] <m1x10> he has wife
[19:01] <m1x10> engaded
[19:01] <m1x10> engaged
[19:01] <natrium42> m1x10, fiance, not married yet
[19:01] <DagoRed> Whoa! Congrats natrium42!
[19:02] <m1x10> yeah
[19:02] <natrium42> cheers
[19:02] <m1x10> i corrected
[19:02] <m1x10> e natrium42
[19:02] <m1x10> i want a glass of vodka :)
[19:02] <natrium42> hehe
[19:03] <m1x10> iirc you live in Canada?
[19:03] <natrium42> not raki?
[19:03] <m1x10> ooooooooo
[19:03] <m1x10> you amaze me
[19:03] <natrium42> yeah, southern ontario
[19:03] <m1x10> you know raki!
[19:03] <natrium42> i am 1/8th greek :P
[19:03] <m1x10> oh
[19:03] <m1x10> !
[19:03] <m1x10> wtf
[19:04] <m1x10> who from family tree is greek?
[19:05] <m1x10> and from which place to be exact?
[19:05] <natrium42> my grand-grand mother
[19:06] <m1x10> hmm
[19:06] <natrium42> i am not sure, not a lot is known about her
[19:06] <m1x10> she left greece to go in russia?
[19:06] <natrium42> soviet times have been a bit rocky :S
[19:06] <m1x10> we had many immigrants that went to russia for better life
[19:07] <m1x10> and mixed with russian population
[19:07] <natrium42> lol
[19:07] <m1x10> propable that grand-grand mother went to russia
[19:08] <m1x10> mnia savout costa!
[19:08] <m1x10> :)
[19:08] <m1x10> kak tibie savout?
[19:08] <natrium42> very good :)
[19:08] <m1x10> :P
[19:08] <natrium42> lyosha
[19:08] Action: SpeedEvil is 1/16th Vorlon.
[19:08] <m1x10> hmm
[19:09] <natrium42> haha
[19:09] <m1x10> i dont know how to prefer it
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[19:09] <m1x10> my last girl was russian to be honest
[19:09] <m1x10> half greek half russian
[19:10] <m1x10> lyosha
[19:10] <natrium42> :)
[19:10] <m1x10> strange
[19:10] <m1x10> cannot prefer
[19:10] <m1x10> ill try google translate
[19:11] <m1x10> LA-I-O-SA ?
[19:11] Action: Laurenceb is half nazi
[19:11] <Laurenceb> amidonitright?
[19:13] <DagoRed> Trolled.
[19:13] <natrium42> http://imgur.com/LWtZE.png
[19:13] <m1x10> LOL
[19:14] <m1x10> i sew that some days ago
[19:14] <m1x10> very good
[19:14] <m1x10> tarantino rulez
[19:14] <m1x10> check for Machette
[19:14] <natrium42> so appropriate for the moment :D
[19:14] Action: natrium42 high fives laurenceb
[19:14] <m1x10> LA-I-O-SA ? is prefered?
[19:15] <natrium42> it's alexei in full
[19:15] <m1x10> what has alexei to do with it?
[19:15] <m1x10> :P
[19:15] <natrium42> so liek greek alexis
[19:15] <m1x10> http://www.google.gr/imgres?imgurl=http://moviecarpet.com/wp-content/uploads/2009/08/machete.jpg&imgrefurl=http://moviecarpet.com/2009/08/06/official-machete-cast-line-up/&h=2410&w=3600&sz=349&tbnid=TFLsB-1YJu5q4M:&tbnh=100&tbnw=150&prev=/images%3Fq%3DMachete&zoom=1&q=Machete&usg=__Jbb57wBVYRdmAZ08gMWcVq-_RWk=&sa=X&ei=1BCyTM_eK4vNswa1n5y4DQ&ved=0CDwQ9QEwBQ
[19:15] <natrium42> in russian, you there are more informal versions of names
[19:15] <natrium42> alexei -> lyosha
[19:16] <natrium42> it's pretty weird
[19:16] <m1x10> hmm
[19:16] <m1x10> sounds russian :)
[19:16] <m1x10> Alex is a prefix in greek that means protector
[19:16] <m1x10> so alex-ander means protector of men
[19:16] <m1x10> ander=man
[19:17] <m1x10> so you are just protector
[19:17] <m1x10> alex-ei
[19:17] <m1x10> :o
[19:17] <m1x10> :P
[19:17] <natrium42> what about alexis?
[19:17] <m1x10> same names
[19:17] <natrium42> http://en.wikipedia.org/wiki/Alexis
[19:17] <m1x10> all come from Alexandros
[19:18] <m1x10> its like nicks for alexandros
[19:18] <natrium42> :)
[19:19] <m1x10> wikipedia is dead
[19:20] <m1x10> you speak any greek in the family?
[19:20] <natrium42> nope
[19:20] <m1x10> lol
[19:21] <m1x10> that explains the 1/8th
[19:21] <m1x10> :P
[19:21] <m1x10> your fiance is local or russian?
[19:23] <m1x10> -what a hab related discussion- :)
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[19:28] <ElmaStar> Evening all, the project website for H.A.P.E.N Weather Balloon is now up
[19:28] <ElmaStar> http://hapen.elmjoy.com/
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[19:42] <Dan-K2VOL> Cool Elma
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[19:57] <Northgate> Evening all
[19:58] <Dan-K2VOL> evening
[19:59] <jcoxon> evening Northgate
[19:59] <jcoxon> hear you launched from suffolk
[20:01] <Northgate> Yup
[20:01] <jcoxon> cool
[20:02] <jcoxon> I'm from suffolk
[20:02] <Northgate> wicked
[20:02] <Northgate> http://hapen.elmjoy.com/
[20:02] <jcoxon> yeah
[20:02] <jcoxon> you've bombarded the ukhas list!
[20:02] <Northgate> i sent a couple of times cos it kept failing!
[20:03] <jcoxon> it didn't fail - its just moderated!
[20:03] <jcoxon> :-p
[20:03] <griffonbot> Received email: ElmaStar <studio@njoy-tv.com> "H.A.P.E.N. Weather Balloon Project"
[20:03] <jcoxon> i've let one through
[20:03] <jcoxon> and removed the others
[20:03] <Northgate> cheers, im a plum sometimes!
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[20:06] <Northgate> i cant believe we managed to recover it, was touch and go for abit
[20:07] <jcoxon> yeah my first launch was like that
[20:09] <jonsowman> :q
[20:09] <jonsowman> oops.
[20:11] <jonsowman> :q
[20:11] <jonsowman> oh ffs. sorry.
[20:24] <jcoxon> just got a spot transmitter for 40 pounds
[20:24] <Dan-K2VOL> nice
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[20:26] <Upu> Won the EBay auction ? :) Nice
[20:26] <jcoxon> wow 70 people on this channel
[20:26] <DagoRed> :)
[20:26] <jcoxon> i remember when there was just me and bfirsh
[20:27] <DagoRed> jcoxon: Well that last flight... I did possibly pull a ham in or two. Darkside and juxta_'s flight (a few other people as well) kinda peaked some interest.
[20:29] <jcoxon> oh yeah
[20:29] <jcoxon> its been growing for quite a while
[20:30] <Upu> Was it Robs flight that got a lot of publicity ?
[20:31] <jcoxon> one of them
[20:31] Nick change: DagoRed -> kd0mto
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[20:31] <jcoxon> Steve did Bang Goes The Theory
[20:31] <Upu> I saw this stuff 4 years ago and thought no one would do it in the UK
[20:31] <Northgate> thats what got me interested
[20:31] <Upu> how silly of me
[20:32] <Northgate> :)
[20:32] <jcoxon> hehe http://www.pegasushabproject.org.uk/zeusbot/2006/highaltitude.log.05Jan2006
[20:32] <kd0mto> I find it funny that in #hamradio, one of th guys was complaining and saying that balloons spam the APRS networks and how it's such a waste. Then he ended up showing up in here and loved watching the last flight on spacenear.us
[20:32] <kd0mto> lol jcoxon
[20:33] <jcoxon> i know
[20:33] <jcoxon> a bit sad
[20:33] <Laurenceb> oh yeah
[20:33] <Laurenceb> http://i.imgur.com/iGbPX.png
[20:33] <jcoxon> its a lot of fun tracking on spacenears.us
[20:33] <Laurenceb> mfsk 64 from the mini rogallo received with my cc1020 SDR
[20:33] <jcoxon> especially when you are helping out
[20:34] <Northgate> i think i'll use spacenear.us for our next launch
[20:34] <Laurenceb> just need to integrate it into dl-fldigi
[20:36] <kd0mto> I wish there was a way to use APRS on spacenear.
[20:37] <kd0mto> Just because APRS is supported reallly well in the US while dl-fldigi I don't believe has the support/coverage we need.
[20:38] <jcoxon> kd0mto, well teh point is that you get a few listeners
[20:38] <jcoxon> it draws people in more
[20:38] <jcoxon> just need a few people listening
[20:38] <jcoxon> to make a good track
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[20:41] <Northgate> night all
[20:42] <jcoxon> night
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[20:44] Action: SpeedEvil orders his environmental chamber for HAB.
[20:44] <kd0mto> SpeedEvil: What are you using that for?
[20:44] <SpeedEvil> Well - it's way too big as a freezer, and i've gotta use the extra space for something. :)
[20:45] <kd0mto> haha
[20:45] <SpeedEvil> I needed a replacement freezer. I have gone rather large, and I plan to place a small peltier-driven cooler inside to go down to -50C or so.
[20:45] <SpeedEvil> As well as to try rapid blast chilling of normally unfreezable foods at silly low temps.
[20:45] <kd0mto> Is that even necessary?
[20:46] <kd0mto> As a HAB environment chamber?
[20:46] <SpeedEvil> no.
[20:46] <kd0mto> Ok then, sounds pretty cool!
[20:46] <SpeedEvil> A chamber that will go to -50 is at best a nice thing to have.
[20:46] <SpeedEvil> It is very far from a requirement.
[20:47] <SpeedEvil> Basically as if you're issipating any amount of power at all in the box, the temperature gets no lower than you would find in a normal unaugmented freezer.
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[20:52] <Laurenceb> http://i.imgur.com/3Vngm.png
[20:52] <Laurenceb> ^mfsk64 packet
[20:53] <SpeedEvil> Shiny.
[20:53] <Laurenceb> http://i.imgur.com/iGbPX.png <-interesting how the agc turns down the background
[20:53] <Laurenceb> need to get it dumping out into dl-fldigi
[20:54] <SpeedEvil> It does quite a lot
[20:54] <Laurenceb> it needs tuning better - its right on the edge of the filter
[20:55] <Laurenceb> also the agc seems to hiccup a bit at the start of each packet - probably just as its a very strong signal
[20:55] <SpeedEvil> How wide are you grabbing again - 10khz?
[20:55] <Laurenceb> yes
[20:55] <Laurenceb> 20ksps
[20:55] <SpeedEvil> Have you tried voice -> mplayer
[20:56] <Laurenceb> nope
[20:56] <Laurenceb> i need to code up a proper interface...
[20:57] <SpeedEvil> Any idea of RL sensitivity?
[20:57] <Laurenceb> this concoction of python +c + octave + gnuplot is getting tiresome
[20:57] <Laurenceb> not really - from the datasheet i calculated about 6dB noise figure
[20:59] <Laurenceb> ideally i need to devise an interface over the usb for retuning, fiddling with the agc etc
[20:59] <Laurenceb> then add support for it in dl-fldigi
[21:00] <SpeedEvil> you're doiing what? Basically a program that tight loops on a micro and spews data over SPI?
[21:00] <Laurenceb> then do a nice pcb where its all on a dongle
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[21:00] <SpeedEvil> Then sell it on ebay, and retire to the bahamas.
[21:00] <SpeedEvil> :)
[21:00] <Laurenceb> uC grabs data over the spi and chucks it over serial to a cp2102 usb-serial
[21:00] <Laurenceb> heh
[21:01] <kd0mto> Laurenceb: look into matplotlib for python. It'll graph everything in pyton for you :)
[21:01] <SpeedEvil> What's the available bands with cc* variants?
[21:01] <Laurenceb> also the cc1020 has to be configured right
[21:01] <Laurenceb> 400-470 or something, and similar around 868mhz and 2.4ghz
[21:01] <SpeedEvil> ah
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[21:02] <Laurenceb> oh ill also use the clk out from the cc1020 to clock the micro, that way theres no clock squew issues
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[21:08] <Laurenceb> matplotlib looks promising
[21:09] <Randomskk> I'm very tempted to learn matplotlib, scipy and numpy quickly
[21:09] <Randomskk> then use them instead of octave/matlab for this year's computing labs
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[21:48] <kd0mto> Randomskk: I've been using matplotlib and scipy for a while. It's not bad. It isn't a matlab replacement but somethings on it are just nice to have and handy. Just know the first time you use a graph on matplot lib it takes a bit to load.
[21:52] Nick change: kd0mto -> DagoRed
[21:53] <Randomskk> from reading a bit now my understanding is that the main thing it doesn't replace is the huge number of matlab toolboxes
[21:54] <DagoRed> True, but those toolboxes cost thouasands of dollars. If you're making your own libraries anyway then use python.
[21:55] <Randomskk> indeed
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[22:01] <DagoRed> On the bright side, there are more libraries for scipy every day!
[22:04] <Randomskk> also python is great
[22:05] <DagoRed> That's just obvious.
[22:05] <DagoRed> :)
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[22:30] <Laurenceb> octave is pretty good
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[22:34] <DagoRed> Octave is alright, but to get what you want it's a pain to install. The benefit to python is that it's used equally well on all platforms and has support, Octave is almost exclusively linux.
[22:37] <SpeedEvil1> rrrrrrrrrrrrwwwwwwwwwww444
[22:37] <SpeedEvil1> oops
[22:39] Nick change: SpeedEvil1 -> SpeedEvil
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[00:00] --- Mon Oct 11 2010