highaltitude.log.20110825

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[02:25] <GeekShadow> natrium42, http://farm7.static.flickr.com/6086/6078584756_568699d3d5_b.jpg
[02:25] <GeekShadow> ;)
[02:26] <GeekShadow> oops bad person !
[02:26] <GeekShadow> sorry :D
[02:29] <natrium42> did ou just call me a bad person?
[02:31] <GeekShadow> I meant wrong :D
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[02:31] <natrium42> :P
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[02:33] <GeekShadow> natrium42, you are no more posting on your blog ?
[02:33] <GeekShadow> also seems like your homepage need to be refreshed
[02:58] <manderson21> lol @ cross server chats
[02:59] <manderson21> I don't see marcan being a fan of nyancat
[02:59] <manderson21> lasers seem to be more his thing
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[03:02] <natrium42> GeekShadow: i am lazy :S
[03:07] <natrium42> manderson21: what about marcan?
[03:09] <manderson21> nothing
[03:09] <natrium42> k
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[06:49] <earthshine> o/
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[06:58] <jcoxon> morning all
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[07:05] #highaltitude: mode change '+o jcoxon' by ChanServ!ChanServ@services.
[07:06] Topic changed on #highaltitude by jcoxon!jcoxon@host86-132-182-112.range86-132.btcentralplus.com: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk - PicoAtlas launch today 1130BST
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[08:04] <Upu> morning
[08:04] <Upu> still on for today jcoxon ?
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[08:16] <jcoxon> yeah
[08:17] <jcoxon> whether it works is a different matter
[08:17] <jcoxon> :-)
[08:18] <jcoxon> bbl
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[08:21] <Upu> jolly good
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[08:55] <LazyLeopard> Ugh. Absolutely chucking it down here...
[08:56] <Randomskk> same :(
[08:56] <Darkside> nothing here
[08:57] <Darkside> ok off to ubni
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[09:06] <LazyLeopard> What's launch-site weather like?
[09:10] <fsphil> another spiffy day here
[09:10] <fsphil> we seem to be having a lot of luck regarding the weather atm
[09:11] <russss> a lovely august in London.
[09:11] <russss> :/ http://www.metoffice.gov.uk/weather/uk/se/london_forecast_weather.html
[09:15] Action: LazyLeopard got a bit damp walking back from the shops...
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[09:21] <jcoxon> rain stopped
[09:22] <Randomskk> alright for some :|
[09:22] <LazyLeopard> Launch on schedule?
[09:22] <jcoxon> yeah, we've got payload running
[09:22] <jcoxon> now about to fill
[09:23] <Upu> see it on the map
[09:27] <earthshine> That's not CU is it ?
[09:27] <earthshine> If i'd known there was a launch today I would have set up my equipment
[09:28] <earthshine> How come launches are no longer posted on the UKHAS website?
[09:28] <Randomskk> they all get emailed to the ukhas list, I guess
[09:28] <earthshine> Shame
[09:28] <LazyLeopard> Well, not _all_ ...
[09:28] <Randomskk> it's not a cusf launch or from cambridge - jcoxon's doing a foil balloon hopefully-floater from suffolk iirc.
[09:28] <earthshine> Someone used to maintain the website regularly but its a bit neglected at the moment
[09:29] <earthshine> rarely do launches go on there
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[09:30] <Randomskk> hm. once we have the habitat web frontend working it should show lists of flights - the new config system is more based around flights than payloads
[09:31] <Randomskk> but yea, baby steps. it's getting there.
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[09:31] Nick change: GW8RAK_ -> GW8RAK
[09:32] Nick change: Upu -> Upu_2E0UPU
[09:32] <griffonbot> @noerr_moet: kamu tuh pacar idaman !! #UKHAS [http://twitter.com/noerr_moet/status/106660230443712512]
[09:35] <fsphil> uhoh
[09:35] <Randomskk> man I hope ukhas isn't being repurposed
[09:35] <Randomskk> the arhab mess was bad enough
[09:36] <Upu_2E0UPU> yeah what does that mean
[09:36] <Upu_2E0UPU> tuh your dream boyfriend?
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[09:37] <Upu_2E0UPU> suspect a faulty tweet tag
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[09:37] <Rob> Is launch still on schedule? Weather radar suggesting a couple of hours rain in Suffolk starting any time soon... http://www.raintoday.co.uk
[09:38] <Upu_2E0UPU> yep balloons are being filled now I think
[09:39] <Rob> I'd better dig out the 70cms antenna then...
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[09:39] <Randomskk> I wonder if I'd get anything from here. probably not at these kind of altitudes :(
[09:40] <russss> need a higher balloon to relay it :P
[09:40] <Randomskk> haha, yes actually, that'd be great
[09:40] <Rob> That's my concern here in Twickenham. I like the high altitude relay idea!!
[09:40] <russss> a network of high-altitude floating relay balloons
[09:41] <Randomskk> we could run IRC off them
[09:41] <Randomskk> except bursts would result in netsplits :P
[09:41] <Upu_2E0UPU> lol
[09:42] <Upu_2E0UPU> be interesting if I can recieve this today
[09:43] <fsphil> indeed
[09:43] <fsphil> suspect you will
[09:44] <daveake> Steve Jobs' text was meant to say: "I reign as CEO of Apple". I bet he doesn't like autocorrect now ...
[09:47] <fsphil> ssshhhh... they're all apple fans here ;)
[09:47] <SamSilver> lol
[09:49] <Hiena> Yeah, i prefer the starking and golden.
[09:53] <jcoxon> 2 balloons filled
[10:02] <jcoxon> 3rd balloon filled
[10:02] <daveake> fsphil Why did you think I said it? ;)
[10:03] <daveake> I think the conf should have a swear box. £1 for every mention of "MBA". Should return a tidy sum.
[10:03] <Upu_2E0UPU> going to be up on time at this rate...
[10:03] <daveake> Nice
[10:04] <number10> raining here quite heavey and heading in direction of lavenham
[10:05] <number10> heavy * need spell checker on irc
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[10:12] <LazyLeopard> It's been employing the frequent short heavy showers tactic this morning...
[10:15] <jcoxon> eeek rain has just hit
[10:15] <jcoxon> payload ready for launch
[10:15] <daveake> Maybe lunch would be a better option till it clears
[10:16] <Upu_2E0UPU> it'll clear the rain in 10 mins
[10:16] <Upu_2E0UPU> as long as the payload doesn't get wet ofc
[10:17] <number10> well its still raining here and heading in that direction
[10:24] <fsphil> aha daveake, living dangerously ;)
[10:25] <fsphil> still sunny here, but that really doesn't help anyone
[10:26] <Rob> www.raintoday.co.uk would suggest lunch before launch -but conditions on the ground may suggest otherwise...
[10:31] <LazyLeopard> The forecast was suggesting that rain would be patchy but intense. However, even the gaps between the intense bits seem to be being at least slightly damp.
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[10:38] <jcoxon> hey guys
[10:38] <jcoxon> we are all set
[10:38] <jcoxon> but rain is quite a bit
[10:38] <Darkside> rain passed?
[10:38] <Darkside> ahh
[10:39] <jcoxon> so are going to wait it out
[10:39] <jcoxon> base it on local conditions
[10:40] <LazyLeopard> Radar suggests you're now on the leading edge of some heavy rain...
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[10:41] <number10> jcoxon is easing off here so should do in about 10-15 minutes where you are
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[10:42] <RocketBoy> there is a small break in the clouds - so we are going to launch soon
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[10:44] <fsphil> good luck!
[10:44] <jcoxon> rain picked up
[10:44] <jcoxon> launch hold
[10:44] <RocketBoy> we waited too long
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[10:50] Nick change: spacekittun -> spacekitteh
[10:51] <fsphil> Poseidon is angry for you dumping all those payloads in the ocean
[10:52] <Laurenceb_> is it going to launchify soon?
[10:53] <Upu_2E0UPU> I'm going to get some lunch back in a bit
[10:54] <Laurenceb_> http://galeri.milliyet.com.tr/2008/8/6Internetten_seckiler__38/19.jpg
[10:54] <Laurenceb_> mmm cake
[10:54] <number10> rain stopped here so you should be clear in about 10 mins
[10:57] <jcoxon> brightening up!
[10:59] <LazyLeopard> restart time...
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[11:04] <jcoxon> still raining
[11:04] <Hiena> Good for you.
[11:04] <Hiena> Here still the burning hell.
[11:05] <Hiena> The last three day was over 30.
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[11:09] <jcoxon> http://www.ustream.tv/channel/xaben
[11:10] <jcoxon> hehe
[11:10] <jcoxon> does it work?
[11:11] <daveake> After the 2 ads, yes :)
[11:12] <daveake> mmmLunch
[11:12] Action: LazyLeopard wonders just why he'd want a phone with a "Facebook" button... ;)
[11:14] <jcoxon> enought of that
[11:14] <LazyLeopard> So, not launching yet, then.
[11:14] <daveake> Yeah, it was making me hungry!
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[11:15] <jcoxon> not yet
[11:15] <jcoxon> though the longer we wait the more tempted...
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[11:19] <jcoxon> can some one look at rain today
[11:23] <LazyLeopard> Big patch of rain moving north-east across east anglia
[11:23] <jcoxon> yeah we've got it up
[11:23] <jcoxon> looks to be thinning
[11:23] <jcoxon> its worth us not launching in rain
[11:23] <jcoxon> as picking up moisture will not help it float
[11:24] <LazyLeopard> Should do. Give it an hour or so...
[11:24] <jcoxon> apologies for the delay
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[11:29] <Rob> I'd guess that turbulence near rain clouds may make the flight a bit bumpy and may make it difficult to see if it is float or not.
[11:29] <number10> has gone quiet here - *number10 thinks they are doing a Darkside on me and going down the pub
[11:31] <SamSilver> number10: on the tracker it l sword danceooks like the payload is doing the Highland fling
[11:32] <SamSilver> on the tracker it looks like the payload is doing the highland fling sword dance
[11:33] <number10> yes - looks very strange - bet it was hard to do that dance over the barns
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[11:44] <Darkside> haha
[11:44] <number10> ;)
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[11:54] <jcoxon> its up
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[11:57] Nick change: spacekittun -> spacekitteh
[11:57] <jcoxon> anyone still around to track?
[11:58] <number10> yes for a while
[11:59] <fsphil> anyone else receiving?
[11:59] <fsphil> wow, love the ascent rate
[11:59] <Darkside> launch!
[12:00] <LazyLeopard> Around, yes. Receiving, not yet.
[12:01] <jcoxon> a bit of fading
[12:01] <jcoxon> suspect going through clouds
[12:01] <LazyLeopard> dial frequency?
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[12:01] <jcoxon> 434.070
[12:01] <LazyLeopard> Ok. Nothing yet.
[12:01] <Darkside> jcoxon: got a pic of your payload?
[12:02] <Upu_2E0UPU> jsut launched ?
[12:02] <Upu_2E0UPU> jsut
[12:02] <Upu_2E0UPU> meh
[12:02] <Upu_2E0UPU> just
[12:02] <jcoxon> hmmmm really poor signal
[12:02] <jcoxon> a bit worrying
[12:03] <Upu_2E0UPU> unsurprisingly nothing here
[12:06] <fsphil> you're poor signal could be caused by it's low altitude?
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[12:07] <LazyLeopard> On the tracker, the blue and green circles signify two angles above the horizon? What are they?
[12:08] <Upu_2E0UPU> g8khw has it
[12:08] <Upu_2E0UPU> whats signal like ?
[12:08] <fsphil> one is above horizon, the other is 5 degrees above horizon
[12:09] <Upu_2E0UPU> at this ascent rate maybe an hour or so before I can hear it
[12:11] <LazyLeopard> The way it's flying away from me...
[12:13] <Upu_2E0UPU> has it stopped ?
[12:13] <fsphil> seems to have
[12:14] <Upu_2E0UPU> it'll be too low for James to recieve and possibly for anyone alse ?
[12:15] <jcoxon> wooryingly week
[12:16] <jcoxon> maybe antenna problem
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[12:17] <jcoxon> eeek
[12:18] <Upu_2E0UPU> is eeek bad ?
[12:18] <jcoxon> yeah
[12:18] <jcoxon> terrible decodes
[12:20] <fsphil> new data
[12:20] <LazyLeopard> Not hearing it yet...
[12:22] <jcoxon> we are struggling
[12:23] <jcoxon> can only assume antenna issue
[12:23] <jcoxon> i'm getting partial decodes
[12:24] <jcoxon> 52.2564,+0.9446,1151
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[12:28] <jcoxon> moving position
[12:28] <jcoxon> could be in a drop
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[12:29] <LazyLeopard> Still not hearing it; not even a faint hint...
[12:30] <jcoxon> its still very low
[12:31] <LazyLeopard> Faintest of J-shaped tails there... Is that on the lower or higher frequency?
[12:31] <jcoxon> lower
[12:32] <jcoxon> 1588m
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[12:35] <jcoxon> 1661m
[12:35] <Darkside> looks like G8HKW is getting it good
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[12:36] <jcoxon> he isn't where his icon is
[12:36] <jcoxon> he is here
[12:36] <Darkside> oh
[12:36] <jcoxon> can some one email the list for listeners
[12:36] <SpeedEvil> Is this another microlaunch with party balloons?
[12:36] <jcoxon> but we've split up to find a better site
[12:38] <Upu_2E0UPU> I'll mail the list give me 2 mins
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[12:41] <Upu_2E0UPU> done
[12:41] <griffonbot> Received email: Anthony Stirk "[UKHAS] Launch in Progress 25/08/2011 13:40 BST - Pico"
[12:42] <Upu_2E0UPU> yes SpeedEvil
[12:44] <fsphil> the coast would be a good spot to track from
[12:46] <Upu_2E0UPU> well 2200-2500 I usually start to get these at
[12:46] <fsphil> just passed 2km
[12:46] <Upu_2E0UPU> yep just noise atm
[12:46] <fsphil> is this the slowest ascent ever? :)
[12:47] <Upu_2E0UPU> this would trigger my fload detection then not fire the pyro as we are below 10000m :/
[12:47] <Upu_2E0UPU> float
[12:47] <daveake> :)
[12:48] <Darkside> fsphil: it wasn't listed on ARHAB before launch
[12:48] <Darkside> so it doesn't qualify
[12:48] <Darkside> :P
[12:48] <fsphil> ha!
[12:48] <fsphil> lol
[12:48] <Upu_2E0UPU> lol
[12:48] <daveake> lol
[12:48] <Upu_2E0UPU> we'll just kick up another fuss and cause a major fight
[12:48] <fsphil> infact this whole launch isn't really happening
[12:49] <fsphil> altitude graph is oddly straight for a foil launch
[12:49] <daveake> Obviously been faked then :)
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[12:51] <fsphil> if it does float it's going to be out of range pretty quickly
[12:51] <fsphil> unless it turns west
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[12:53] <fsphil> oooh there's some lightning nearby-ish
[12:53] shipit (~shipit@c-67-180-23-104.hsd1.ca.comcast.net) joined #highaltitude.
[12:53] Action: LazyLeopard hasn't heard more than theh briefest faintest hints of it yet...
[12:55] <fsphil> are you on the right frequency?
[12:57] <LazyLeopard> I think so...
[12:57] <LazyLeopard> ...unless it's drifted wildly.
[12:58] <fsphil> always worth tuning around a bit just to see
[12:58] <LazyLeopard> Oh, have been.
[12:59] <LazyLeopard> Only thing I've seen so far is the J-shaped tail that leads into a line of rtty. The rtty itself is below the noise.
[12:59] <Laurenceb> this is going to go in the sea?
[12:59] <Laurenceb> whats flying?
[13:00] <Laurenceb> and theres no prediction :(
[13:00] <LazyLeopard> ....and that's with the dial at 435.07150 USB.
[13:01] <fsphil> sounds like that's it LazyLeopard
[13:02] <fsphil> another gap in telemetry
[13:03] <LazyLeopard> The balloon's flying almst exactly directly away from me, which likely isn't helping. The increase in distance and the increase in altitude just about cancel out. ;)
[13:04] <LazyLeopard> Yeah, the telemetry gaps do make it trickier, particulary in the early stages...
[13:04] <Upu_2E0UPU> hang on whats the pause between telemetry ?
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[13:07] <Upu_2E0UPU> is it transmitting constantly ?
[13:07] <LazyLeopard> No.
[13:07] <Upu_2E0UPU> whats the delay ?
[13:08] <LazyLeopard> It warms up, spits out a line, then goes back to sleep, far as I can tell. That said, the RTTY itself is just about vaguely perceptible, maybe...
[13:08] <jcoxon> yeah its got a degree of power saving
[13:09] <LazyLeopard> ...so the only hints I get are from the j-shaped warming-up tone...
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[13:11] <Dan-K2VOL> good luck jcoxon
[13:11] <Dan-K2VOL> were you able to measure the lift indoors?
[13:11] <Dan-K2VOL> or with no wind?
[13:11] <Upu_2E0UPU> what dial frequency are you getting it on ?
[13:12] <LazyLeopard> 434.071.3 here
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[13:13] <Upu_2E0UPU> not a jot here
[13:13] <jcoxon> nah we are still struggling
[13:13] <jcoxon> must be a crap antenna
[13:14] <hibby_> win 38
[13:15] <hibby_> dang
[13:15] <hibby_> got a ton of windows on irssi
[13:15] <Darkside> lol
[13:15] <hibby_> have we got rid of the graphs on the tracker?
[13:16] <LazyLeopard> They're on tabs
[13:16] <Upu_2E0UPU> click the tab
[13:16] <hibby_> ah
[13:16] Action: hibby_ clicks legacy
[13:16] <LazyLeopard> Makes it tricky to see both map and graph at the same time, but the old layout's still lurking at http://spacenear.us/tracker/legacy.php
[13:16] <LazyLeopard> ;)
[13:17] <hibby_> i'm an engineer, I like graphs of EVERYTHING
[13:17] Nick change: hibby_ -> Hibby
[13:18] Action: LazyLeopard likes to see the graph with the map, too.
[13:19] <Upu_2E0UPU> see what happens when the radio horizon hits me
[13:19] <jcoxon> super antenna
[13:19] <jcoxon> we've got a yagi up a high pole
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[13:20] <Upu_2E0UPU> got to go out on site shortly
[13:23] <Hibby> yay
[13:23] <Hibby> 38 windows -> 12 in irssi
[13:23] <Hibby> cleanout: successful
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[13:28] <jcoxon> UUUUU$$PICO,1070,13:27:04,52.8257,+1.3113,3879,10,-1*
[13:28] <jcoxon> just missed the checksum
[13:28] <jcoxon> is there a way of inputing direct into habitat
[13:28] <jcoxon> ?
[13:30] <Dan-K2VOL> oh but without checksum! no checksums make my science hurt :-P
[13:30] <jcoxon> 4076m
[13:30] Action: Hibby realises the zip he was about to flash to android is non existant
[13:32] Rob_M0DTS (57c262d3@gateway/web/freenode/ip.87.194.98.211) joined #highaltitude.
[13:32] <Rob_M0DTS> still climbing... hope for me to receive something then!
[13:32] <jcoxon> need better reception...
[13:32] <jcoxon> its fading away...
[13:36] <DanielRichman> jcoxon: test.php will work, or you can use http://habitat.habhub.org/transition/
[13:36] <DanielRichman> oh, you mean, imputting the data because you don't know the checksum
[13:37] <DanielRichman> try *31
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[13:38] <Rob_M0DTS> what's frequency today .070?
[13:39] <jcoxon> lsb is better i'm finding
[13:39] <jcoxon> 074
[13:39] <Rob_M0DTS> ta
[13:40] <Dave_FEV> $$PICO,1120,13:39:19,52.9752,+1.3804,4910,12,-1*627C| Nearly
[13:41] <Dave_FEV> Got one
[13:42] <Hibby> lol
[13:42] <jcoxon> hooray
[13:44] <Upu_2E0UPU> can someone post something when they hear it transmitting
[13:44] <Upu_2E0UPU> because I'm just getting static here
[13:45] <Upu_2E0UPU> ok I need to go out
[13:45] <Upu_2E0UPU> fsphil fancy taking over ?
[13:46] <Laurenceb> float at 5KM?
[13:46] <jcoxon> descending very slowly
[13:46] <Upu_2E0UPU> fsphil if you come back back the remote thing is all set up gtg
[13:47] <jcoxon> @>_w??[?s2?45:10,53.0577,+1.4270,4988,12,-1*8C27
[13:47] <jcoxon> U$$PICO,1146,13:45:39,53.0646,+1.4307,4982,12,-q(32E4
[13:47] <jcoxon> U$$PICO,1148,13:46:08,53.0794+1.4343,4981,12,-1*3A6E
[13:47] <jcoxon> UUUUU$$PICO,1150,13:46:37,53.0783,+1.4380,4994,12,-1*61A9
[13:48] <jcoxon> UU$$PICO,1152,13:47:07,53.0852,+1.4418,5015,`2
[13:48] <jcoxon> float!
[13:51] <SamSilver_> by golly it looks like a floater
[13:52] <SamSilver_> yipppyyyyy
[13:52] <jcoxon> now going up again
[13:52] Action: Hibby sniggers
[13:52] <SpeedEvil> :)
[13:55] <SamSilver_> bit of a tease is it not?
[13:55] <Dutch-Mill> ...on a rescue mission finding Horus-15 ?
[13:55] <Laurenceb> batteries flat or something?
[13:56] <jcoxon> floating!
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[13:57] <jcoxon_> hey
[13:57] <Dutch-Mill> hey
[13:59] <Dave_FEV> UUU$$PICO,120,13:58:48,53.2405,+1.5472,5329,12,-1*A2D9
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[14:01] <Dutch-Mill> home in 60 mins... what's the expected flighttime ?
[14:02] jcoxon_ (~jcoxon@92.40.253.56.threembb.co.uk) got netsplit.
[14:02] mixio (m1x10@79.167.76.49) got netsplit.
[14:02] jasonb (~jasonb@adsl-66-124-73-250.dsl.sntc01.pacbell.net) got netsplit.
[14:02] Cleo (~Cleo@unaffiliated/cleo) got netsplit.
[14:03] <Rob_M0DTS> rtty has arrived.. weak yet though...
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[14:04] <fsphil> weak signal at upu's station
[14:06] <jcoxon> weak signal here too
[14:06] <jcoxon> variable
[14:06] <jcoxon> thats the problem
[14:06] <jcoxon> it fades
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[14:07] <Dave_FEV> $$@ICO,132,14:06:39,53.3554,+1.6337,5634,11,-1*0AF3 Just missed the P !!!
[14:08] <LazyLeopard> Hmmm... Is the signal normal or reversed on USB?
[14:08] <fsphil> looks like you've done a hadie:2 :)
[14:08] NigelMoby (~nigel@cpc5-cdif13-2-0-cust232.5-1.cable.virginmedia.com) joined #highaltitude.
[14:08] <jcoxon> pah thats near enough
[14:08] <jcoxon> inverted on usb
[14:08] <jcoxon> better on lsb though
[14:08] <LazyLeopard> Riiiight...
[14:08] <LazyLeopard> Not here.
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[14:09] <LazyLeopard> LSB seems to pull in a whole lot of QRM
[14:09] G4TNX (8a20b0fe@gateway/web/freenode/ip.138.32.176.254) left irc: Quit: Page closed
[14:09] Action: LazyLeopard clicks the RV button.
[14:10] <LazyLeopard> Not, given the signal level I've been seeing, that I expect it to make any difference...
[14:11] <NigelMoby> Interesting bump on the alt graph James.
[14:12] <SamSilver_> Wonder if it was a crease in the foil poping out
[14:12] <SamSilver_> most likley a thermal
[14:13] jcoxon_ (~jcoxon@92.40.253.56.threembb.co.uk) got lost in the net-split.
[14:14] <fsphil> USB vs LSB really shouldn't make any difference
[14:14] <Hibby> I find that USB vs RS232 makes a bigger difference
[14:15] <LazyLeopard> Depends a bit on how the filters shape things...
[14:16] <mixio> Anyone uses eclipse here?
[14:17] <LazyLeopard> ...but iit'd be sensible to specify the mode for which the data didn't need reversing...
[14:18] <LazyLeopard> ...as the auto-configure doesn't cover it.
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[14:19] <jcoxon> 5993m
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[14:20] <jcoxon> 6025m
[14:20] <mixio> jcoxon what is that?
[14:21] <Dave_FEV> $ PICO,1290,14:20:47,53.5758,+1.8026,6057,10,CxÂ
[14:22] <mixio> lol, new flight?
[14:22] <Rob_M0DTS> antenna on balloon is vertical i presume?... i'm horizontal so will go rotate the boom.
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[14:23] <jcoxon> pind DanielRichman
[14:23] <DanielRichman> hi jcoxon
[14:23] <jcoxon> Rob_M0DTS, yeah, thought its a bit broken we suspect
[14:23] <Dan-K2VOL> jcoxon after the flight could I get some detailed numbers on weight/lift? I'd like to start cataloguing superpressure attempt details
[14:23] <jcoxon> DanielRichman, finding test.php not working
[14:24] <DanielRichman> jcoxon: it should work for manual insertion but won't provide any debug output
[14:24] <Rob_M0DTS> thanks.
[14:24] <jcoxon> Dan-K2VOL, sure
[14:24] <jcoxon> we've got lots of data
[14:24] <DanielRichman> jcoxon: failling that, http://habitat.habhub.org/transition, although that asks you to base64 your data before you upload it (don't include the newline)
[14:25] <jcoxon> DanielRichman, eek
[14:25] <DanielRichman> yeah. test.php just says "response from habitat: OK; DONE"
[14:25] <jcoxon> yeah
[14:25] <jcoxon> can i submit without checksums?
[14:25] <Randomskk> jcoxon: if you're on linux or mac you can just "echo -n '$$whatever' | base64" to encode it
[14:25] <DanielRichman> Nope :S the habitat parser will reject it instantly
[14:26] <Randomskk> you can calculate the checksum that would make the message okay :P
[14:26] <Randomskk> hm
[14:26] <Randomskk> probably worth having on the web ui, something to manually upload positions
[14:26] <DanielRichman> task list!
[14:26] <DanielRichman> more immediately, jcoxon: can you ssh to nessie?
[14:26] <NigeyWeb> lol does it ever get smaller Randomskk ?
[14:27] <Randomskk> NigeyWeb: haha occasionally :P
[14:27] <jcoxon> DanielRichman, i'm in
[14:27] <NigeyWeb> lol :p
[14:27] <Randomskk> DanielRichman has been working very hard at ticking off "modified dl-fldigi", that should be ready soonish
[14:27] <DanielRichman> jcoxon: give me a minute and I'll dump a crc16 calculating python script in your home directory
[14:27] <Randomskk> I'm making good progress at clearing up a new "fix tests" items
[14:27] <Randomskk> but yes
[14:27] <Randomskk> I think it's getting bigger faster than we tick things off :P
[14:28] <NigeyWeb> dam, ure doing a good job though, fair play :)
[14:28] <Randomskk> we should have swapped to running it live ages ago, it's a great way to test it and get it working really quickly
[14:28] <jcoxon> Dave_FEV, worth pasting any data here
[14:28] <Randomskk> there's a lot more pressure on when someone's flight is in the air and it's messing up for some reason :P
[14:29] <NigeyWeb> true, sometimes its the best way to bug fix
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[14:29] <NigeyWeb> ello jgrahamc
[14:29] <jgrahamc> What's the state of pico atlas?
[14:29] <jgrahamc> Hi
[14:30] <NigeyWeb> 6.something km
[14:30] <Laurenceb> and dead
[14:30] <jgrahamc> Lost contact?
[14:30] <NigeyWeb> appears so
[14:31] <fsphil> upu's station is getting serious noise
[14:31] <NigeyWeb> jcoxon: we need a ukhas chase boat for these pico's !
[14:31] <DanielRichman> jcoxon: /home/daniel/crc16.py
[14:32] <jcoxon> 6290m
[14:32] <DanielRichman> single line on stdin, gives you checksummed line
[14:33] <Dave_FEV> U@$PICO,1338,14:32:32,53.7728,+1.9425,6267,11,-1*0è
[14:33] <NigeyWeb> oh maybe burst
[14:34] <jgrahamc> So it's txing still just lots of QRM/N?
[14:35] <Rob_M0DTS> just not enought ot get some decode..odd letter thats all. Slightly stronger with yagi vertical.
[14:35] <Laurenceb> its going to crash into a mountainside in norway
[14:35] <NigeyWeb> heh
[14:36] <jcoxon> float?
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[14:37] <fsphil> jgrahamc, appears to be a faulty antenna
[14:37] jcoxon (~jcoxon@92.40.253.56.threembb.co.uk) joined #highaltitude.
[14:37] <jcoxon> stupid mobile internet
[14:37] <jcoxon> oops missed a lot of chat
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[14:39] <jgrahamc> Ok. If it's still up when I get home I'll whip the yagi out and get up on the roof. Should have nothing between me and the balloon in that direction.
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[14:41] <Dave_FEV> $$PICO,1368,14:39:51,53.8988,+2.0288,6257,11,-1,03B still going
[14:41] <jcoxon_> its floating
[14:41] <jcoxon_> look at the altitude
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[14:41] <NigeyWeb> yup appears so
[14:42] Nick change: GW8RAK_ -> GW8RAK
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[14:43] <jcoxon_> seems to have gone from here
[14:43] <Upu_2E0UPU> any joy fsphil ?
[14:43] <NigeyWeb> dam :/
[14:44] <jcoxon_> anyone got a single?
[14:44] <Upu_2E0UPU> not hearing anything at all
[14:45] <Upu_2E0UPU> any suggestion on frequency ?
[14:45] <W0OTM> Howdy
[14:45] <jcoxon_> Dave_FEV, any signal?
[14:45] <fsphil> Upu_2E0UPU, no -- it's there but deep in the noise
[14:45] <Dave_FEV> UUUUU$$PICO,1372,14:40:50,53.9155,+2.0400,6258¨"Ú33á The last decent packet I received
[14:45] <Upu_2E0UPU> it has a carrier ?
[14:46] <fsphil> I did see something that was probably it yea
[14:46] <Upu_2E0UPU> constant line ?
[14:46] <Dave_FEV> I think it has gone now
[14:46] <Upu_2E0UPU> yeah think I have something
[14:46] <fsphil> two lines with the appropriate shift
[14:46] <Rob_M0DTS> totally lost it here now....
[14:47] <jcoxon_> i think its gone
[14:47] <Upu_2E0UPU> it is quite far out
[14:47] <Darkside> WOW
[14:47] <SpeedEvil> Ah.
[14:47] <Darkside> 6.2km altitude!
[14:47] Action: SpeedEvil looks at the tracker.
[14:48] <Laurenceb> need 4 more hours float
[14:48] <Laurenceb> to get to Norway
[14:48] <Laurenceb> maybe 3.5
[14:48] <Hibby> haha
[14:48] <jcoxon_> wait
[14:48] <jcoxon_> i can see it on the wfall
[14:48] <SpeedEvil> Is that linearly extrapolated, or predicted Laurenceb?
[14:48] <Laurenceb> predicted
[14:49] <Upu_2E0UPU> sure there is something out there but like fsphil says its buried in the noise
[14:50] <NigeyWeb> any1 thought of trying the global tuners stations?
[14:51] <Laurenceb> 4 hours to Stavanger
[14:52] <jcoxon_> can some one try the kessingland global tuners
[14:53] <NigeyWeb> dial freq?
[14:53] <Rob_M0DTS> 072 here
[14:53] <jcoxon_> 074 lsb
[14:53] <jcoxon_> Rob_M0DTS, can you hear it?
[14:53] <Rob_M0DTS> weak trace on waterfall
[14:54] <Upu_2E0UPU> what frequency Rob ?
[14:54] <Rob_M0DTS> 072 USB 700/1100hz
[14:55] <Upu_2E0UPU> yeah there is something there
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[14:59] <Rob_M0DTS> i'm blocked to the south east by the north yorkshire moors so doubt it will get better.
[14:59] <Upu_2E0UPU> http://ava.upuaut.net/files/pico.jpg
[14:59] <Upu_2E0UPU> thats what I see atm
[15:00] <Upu_2E0UPU> but thats pretty much gone now
[15:00] <jcoxon_> just need a single altitude
[15:00] <Rob_M0DTS> jst noise to me...rtty is wider vertical lines
[15:01] <Upu_2E0UPU> yeah it was in the right area and now its gone
[15:01] <Rob_M0DTS> ah ok
[15:01] <Upu_2E0UPU> which is consistant with the radio horizon
[15:02] <jcoxon_> nothing here
[15:02] <NigeyWeb> thunder here :/
[15:03] <fsphil> yay
[15:03] <Upu_2E0UPU> interesting who left Kessingland Global Tuner on 434 :)
[15:03] <NigeyWeb> either that or a huge bomb just went off
[15:03] <jcoxon_> okay
[15:03] <jcoxon_> we are going to pack up
[15:03] <jcoxon_> as out in a field
[15:03] <jcoxon_> please keep listening if you can
[15:03] <jcoxon_> even a tiny bit of data would be helpful
[15:04] <NigeyWeb> give it an hour and the dutch stations may pick it up
[15:06] <Rob_M0DTS> i can get out on teh hills in about 2 hours but likely too far east then :-(
[15:07] <NigeyWeb> oh using the folkstone xmitter on TG 434.072 very loud carrier
[15:07] <NigeyWeb> gt*
[15:13] <jcoxon_> Rob_M0DTS, nah leave it be
[15:13] <jcoxon_> we hven't got data for 30mins
[15:13] <jcoxon_> and we never planned to get it back
[15:13] <Rob_M0DTS> yeah think it wil be to late. Nothing heard in gateshead either.
[15:13] <jcoxon_> its time to start analysing the data
[15:13] <NigeyWeb> i got a carrier james dunno if thats it...
[15:14] <jcoxon_> NigeyWeb, its a periodic carrier
[15:14] <jcoxon_> right bbl
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[15:18] <Laurenceb> http://i.imgur.com/qQ6SQ.jpg
[15:18] <SpeedEvil> Laurenceb: What was the code you were using as the basis of your magnetic model thing?
[15:18] <Laurenceb> when you see it...
[15:19] <Laurenceb> NOAA code
[15:19] <Laurenceb> but theres a modified version on openpilot svn
[15:20] <GW8RAK> Laurenceb, I see a long line of technical books and then "Hot Sex" near the end.
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[15:21] <SpeedEvil> And the mirror
[15:22] <Laurenceb> http://git.openpilot.org/browse/OpenPilot/flight/Libraries/WorldMagModel.c
[15:22] <Darkside> bahaha
[15:22] <Darkside> yep, hot sex at teh end
[15:22] <SpeedEvil> And the twighlight
[15:23] <SpeedEvil> thanks!
[15:24] <Randomskk> well it's zelda
[15:24] <Laurenceb> SpeedEvil: I modified it to use GPS time
[15:24] <Laurenceb> on my github
[15:27] <SpeedEvil> Laurenceb: It was a query about someone WRT the n950 magnetometer library being proprietory ad closed
[15:28] <Dan-K2VOL> interesting how the pico flights I've seen seem to go much higher than people predict they will
[15:29] <SamSilver_> I think James was aiming at 7
[15:29] <SamSilver_> Hi Dan
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[15:34] <Dan-K2VOL> hi Dave
[15:34] <Hibby> hola all
[15:34] <Dan-K2VOL> ok SamSilver_ the UKHAS email said 3000 to 4000m
[15:35] <Dan-K2VOL> but that was from Anthony not james
[15:37] <Dan-K2VOL> hi hibby
[15:37] <SamSilver_> It was about three nights ago, maybe weekend when I thought he said 7
[15:37] <Hibby> been a really nice, slow rise
[15:37] <Dan-K2VOL> hibby you should really get yourself down here this weekend!
[15:37] <SamSilver_> I stand corrected but he skiped a number in the number sequence of Pico
[15:38] <Dan-K2VOL> oh gotcha
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[15:43] <Hibby> Dan-K2VOL: I'm considering it
[15:43] <Hibby> I finish work tomorrow
[15:43] <Hibby> so I could stay longer, lol
[15:44] <Hibby> for all the work ive done
[15:48] <Dan-K2VOL> nice! you're welcome to stay with molly and I, and I suspect many others you know here would welcome you as well. I'd give you a ride down tomorrow night or saturday morn if you can get a ride back
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[15:51] <Hibby> cool
[15:51] <Hibby> just organising my flights back
[15:52] <Hibby> proving to be an utter nightmare
[15:52] <Hibby> because the folks at the travel agency are utter, utter retards
[15:52] <Hibby> for lack of a better word to express my frustration
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[15:55] <jcoxon> back
[15:55] <jcoxon> any further news
[15:58] <Dan-K2VOL> ugh yeah travel agencies are not very much used here any more
[15:58] <Laurenceb> you know Bransons house burnt down?
[15:58] <Laurenceb> You could smell the burning pickle from many miles away
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[15:59] Nick change: murray -> Guest56023
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[16:00] <murray223> i dont understand why latex balloons pop!
[16:00] <Hibby> really?
[16:00] <Upu_2E0UPU> pressure outside gets less
[16:00] <Upu_2E0UPU> so they expand
[16:00] <Upu_2E0UPU> until they burst
[16:01] Nick change: Upu_2E0UPU -> Upu
[16:01] <Hibby> Dan-K2VOL: yeah, it's taken me 3 weeks to go through every possible flight combo, with me saying "I want a date change only" at every juncture
[16:01] <murray223> exactly, but once say 20 miles up, if you go another mil eup the pressure change is minute
[16:01] <Dan-K2VOL> I guess they forgot the lightning rods on the branson house?
[16:02] <Dan-K2VOL> lol hibby, you may as well just find the flights yourself easier and tell the numbers to the travel agency
[16:02] <Hibby> I did that before
[16:02] <Hibby> and they asked me why I wanted a changeover at Cincinnati
[16:02] <Hibby> I was like... excuse me?
[16:02] <murray223> so why do they all burst at roughly the same height when had someone filled up the balloon fractionally more on lift off it would equate to the same change in internal pressure in the balloon as a mile of height difference once high up
[16:02] <Dan-K2VOL> haha
[16:02] <Upu> murray223 gets noticably less and less and the UV light may also degrade the latex
[16:02] <Hibby> I'm now emailing smeone who's got me on flights out the US, but I get as far as London
[16:03] <fsphil> you being rescued Hibby?
[16:03] <Hibby> I'm like "Your website has these flights that match my requirements. Book them"
[16:03] <Hibby> fsphil: need to go back a few days earlier than planned, but it feels like I'm flinging shit in a pigsty
[16:03] <Hibby> I've been telling a company I
[16:03] <Hibby> 've got money to give them for 3 weeks
[16:04] <Hibby> and they've been avoiding taking it at every possible point in time
[16:04] <Hibby> which is a terrible business plan
[16:04] <fsphil> odd indeed
[16:04] <Dan-K2VOL> do you need to use the agency?
[16:04] <Hibby> Dan-K2VOL: yeah, flights are booked through them by the lot that sponsored me coming out here
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[16:05] <Dan-K2VOL> murray223 weather balloons are calibrated to burst at a certain diameter of expansion
[16:05] <Dan-K2VOL> you can buy a balloon to burst at about any diameter you please, and you adjust helium and payload weight to predict altitude the balloon will reach that diameter, based on the standard atmospheric pressure model
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[16:08] <Upu> 'ello you back from France already rjharrison ?
[16:08] <rjharrison> Nar sill there
[16:08] <Upu> hi to france :)
[16:08] <Hibby> how terrible.
[16:08] <murray223> ah i see
[16:08] <Hibby> I hope you get back safely
[16:08] <fsphil> bonjour
[16:08] <rjharrison> Enjoying fine wine, good food and lose women, well wife to be precise
[16:08] <Hibby> you lost your wife?
[16:09] <rjharrison> loose
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[16:09] <fsphil> lol
[16:09] <Hibby> :p
[16:09] <Upu> haha
[16:09] <rjharrison> Upu, any news from our mutual frend DM
[16:09] <Upu> negative
[16:09] <fsphil> urg
[16:09] <Upu> not had chance to chase him either
[16:10] <fsphil> he's ignoring you too then?
[16:10] <Upu> I'll call him tommorrow
[16:10] <Upu> I need to launch this bloody balloon its getting silly
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[16:14] <Dan-K2VOL> well murray223 left, but here's a great utility to play with for understanding atmospheric pressure: http://digital-dutch.com/atmoscalc/
[16:14] <Hibby> lol\
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[16:17] Action: Darkside is listening to some heavy house
[16:17] <TimZaman> do not like
[16:17] <Darkside> This is Paco Di Bango...
[16:18] <TimZaman> fsphil: what was that software called for linux for virtual audio cards?
[16:18] <TimZaman> Paco De Lucia +1
[16:18] <Darkside> http://www.youtube.com/watch?v=8jJZUKxjdWA
[16:18] <TimZaman> Also, what other software, other than spectravue was there? since i dont like wine
[16:19] <Darkside> TimZaman: on linux, theres only Quisk
[16:19] <Darkside> which is shit
[16:19] <Darkside> you could use GNUradio too
[16:19] <Darkside> but that might be a bit fiddly to get setup
[16:19] <TimZaman> Ok so what do you adivise
[16:19] <Darkside> use spectravue
[16:19] <Darkside> as it works pretty well
[16:19] <TimZaman> OK
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[16:35] <mattltm> Hi all :)
[16:35] <jcoxon> hey mattltm
[16:35] <mattltm> Hi :)
[16:36] <mattltm> How did the launch go?
[16:36] <jcoxon> pretty good
[16:36] <jcoxon> suspect antenna issue onboard
[16:36] <jcoxon> so getting data was a challenge
[16:36] <mattltm> did you get float?
[16:36] <jcoxon> just working through the raw mess
[16:36] <jcoxon> i think so
[16:37] <jcoxon> will know soon
[16:37] <mattltm> cool
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[16:48] <Upu> we know any HAMs in Norway ?
[16:48] <jcoxon> there was one
[16:48] <jcoxon> who has been on here befoer
[16:49] <Laurenceb> should be arriving about 7pm uk time
[16:49] <jcoxon> LA3QMA
[16:49] <jcoxon> just parsing the data
[16:49] <jcoxon> will be helpful
[16:49] <Upu> ok
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[16:50] <Dan-K2VOL> may want to ping the list
[16:50] <Dan-K2VOL> email
[16:50] <GW8RAK> Their equivalent of the RSGB has got a forum on the website, but it needs a login.
[16:51] <GW8RAK> Not a lot of activity though.
[16:52] <jcoxon> we've got a bit of time
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[16:55] <Hibby> Is it still going?
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[16:58] <jcoxon> i'm jsut going through the logs
[16:58] <jcoxon> editing the obvious changes
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[17:19] <NigeyS> hmm MBpro or MBA :|
[17:20] <Darkside> MBpro
[17:20] <Randomskk> air
[17:20] <Darkside> 15" i7 quad core version
[17:20] <Darkside> (of the MBP)
[17:20] <NigeyS> noo dont want an imac i got my desktop gaming pc :D
[17:20] <Darkside> my laptop is a powerhouse
[17:20] <Randomskk> NigeyS: as a laptop, or as your main computer?
[17:20] <Randomskk> for a main computer I'd get a fully specced 13" air
[17:20] <NigeyS> laptop Randomskk
[17:20] <Randomskk> for a laptop, I'd get an 11" air.
[17:21] <Randomskk> unless you really need to regularly do heavy number crunching the mbp is kinda pointless
[17:21] <NigeyS> was looking at the 256gig ver
[17:21] <Randomskk> airs are so nice.
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[17:21] <Randomskk> meh, personally I have a 64gb and it's no problem
[17:21] <NigeyS> 13-inch : 256GB
[17:21] <Randomskk> if you actually anticipate storing a lot of data on it, the 128 might be better. 256 costs a fair bit.
[17:21] <NigeyS> im not paying
[17:21] <Randomskk> also I have an 11" and it's fine but some people do prefer the slightly bigger one :P
[17:21] <Randomskk> haha in which case
[17:21] <Randomskk> full spe
[17:21] <NigeyS> i just have to choose an apple product upto £1400 in value :|
[17:22] <Randomskk> wow. good gig. how's that?
[17:22] <NigeyS> some admin work im doing
[17:22] <Randomskk> pick between 11" or 13" MBA based on preference and then get the full spec
[17:22] <Randomskk> sweet.
[17:22] <NigeyS> quite like the 13" .. im not a fan of small screens
[17:22] <natrium42> NigeyS: if you're a man, you can carry around a 17" mbp no proglem
[17:22] <Randomskk> fair enough then, both are really nice
[17:23] <natrium42> *problem
[17:23] Action: Darkside prefers his 15" to his old 13" macbook
[17:23] <Darkside> especially when the 15" screen is 1680x1050
[17:23] <NigeyS> natrium42, 17" mbp are rather nice!
[17:23] <Darkside> but you won't get that for <1400 pounds
[17:23] <natrium42> NigeyS: indeed, 1920x1200
[17:23] <NigeyS> ya theyre still super expensive
[17:23] <Darkside> yup, my 15" macbook was about 1800 pounds i think
[17:23] <Darkside> AUD$1500
[17:23] <Darkside> ack
[17:23] <Darkside> AUD$2500 i should say
[17:23] <NigeyS> ouch
[17:23] <natrium42> so what happened to pico atlas?
[17:24] <NigeyS> remember a friend of mine paying i think £300 for a replacement battery for his old mbpro
[17:24] <Darkside> yeah you can't replae the batteries on teh new MBPs or airs or anything really
[17:25] <Darkside> i mean, you can get to them, but you have to open the case
[17:25] <Darkside> my old macbook you could change the battery really easily
[17:25] <Darkside> i had one of the late 2008 macbook unibody's
[17:26] <NigeyS> oh i see
[17:26] <NigeyS> hm
[17:35] <jcoxon> oh wow this is dull
[17:35] <Dan-K2VOL> Darkside, the new computers batteries last for 1000 cycles, and 10 hours, more than 3x the old removable style, so battery replacement is
[17:35] <NigeyS> ?
[17:35] <Dan-K2VOL> not really needed by normal usage
[17:35] <jcoxon> i'm manually editing the data
[17:35] <jcoxon> to make it uesful
[17:36] <NigeyS> hehe i did that with some of picochus data james, its very.. boring to say the least
[17:36] <Dan-K2VOL> lol
[17:36] <Dan-K2VOL> it is
[17:37] <Dan-K2VOL> perhaps we could all chip in on a statistician for hab flights data :-P
[17:37] <NigeyS> hmm wonder if i can push them to get me a mac pro
[17:37] <Dan-K2VOL> wow that's a lot
[17:37] <NigeyS> lol not a bad idea dan!
[17:37] <NigeyS> Dan-K2VOL, so is the work theyve asked me to do, even at my cheap rates its a big job
[17:38] <Dan-K2VOL> oh, what's it about
[17:38] Action: Hibby puts his banhammer away
[17:38] <NigeyS> a big media company want a new web cluster set up, db servers, load balancers etc
[17:39] <fsphil> TimZaman, yea spectravue is probably the best one unfortunately
[17:40] <Dan-K2VOL> NigeyS ugh that sounds like work indeed
[17:40] <NigeyS> Dan-K2VOL, easy stuff, just boring :/
[17:40] <Dan-K2VOL> yeah
[17:40] <NigeyS> got a nice 4 week deadline to, not something daft like 3 days which has been done before
[17:41] <Dan-K2VOL> ha
[17:41] <NigeyS> 3 days isnt really enough time if you hit problems with DNS
[17:45] <fsphil> how went pico?
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[17:50] <fsphil> whoa, good distance!
[17:50] <fsphil> do you think it's still up there?
[17:50] <daveake> It's pining for the fyords
[17:50] <Darkside> fjords*
[17:50] <daveake> dammit
[17:51] <Darkside> http://www.youtube.com/watch?v=npjOSLCR2hE relevant
[17:51] <daveake> Knew that looked wrong
[17:51] <Hibby> shut up aussie
[17:51] <Hibby> go back to your ponies
[17:51] <Darkside> Hibby: haha
[17:51] <Darkside> ITS RESTING
[17:52] <NigeyS> lmao
[17:52] <Darkside> no no its tunned
[17:52] <Darkside> stunned*
[17:52] <Darkside> its an EX parrot
[17:52] <Hibby> 'salright, my little pony's 20% cooler than yours
[17:52] <Darkside> in 10 seconds flat?
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[17:57] <jcoxon> i've taken a bit of artistic licence with this data
[17:58] <jcoxon> intepreting it a bit to make something sensible
[17:59] <natrium42> jcoxon: think it's still up?
[17:59] <jcoxon> it could be
[17:59] <jcoxon> doubt it though
[17:59] <natrium42> k
[18:01] <RocketBoy> heres my theory for today - at launch the balloons were partly filled - so initial ascent is a constant(ish) rate - upto about 4000m - at which point the balloons are full and begin to pressurise - because the balloons are now taught & smooth the ascent rate increases - but as altitude increases the ascent rate drops off as it approaches SP float (as you would expect)
[18:04] <fsphil> I just did a quick scan, no rtty signals here :)
[18:05] <fsphil> considering these things don't descent dramatically like latex balloons, I'd say it easily got to the middle of the north sea
[18:05] <fsphil> descend*
[18:06] <jcoxon> here is my raw data
[18:06] <jcoxon> http://ukhas.org.uk/projects:picoatlas:picoatlasiv:rawdata
[18:06] <jcoxon> i'll publish my edited raw data in a bit
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[18:08] <fsphil> definite float at the end
[18:08] <fsphil> shame it cut out
[18:08] <fsphil> at least we know it's possible now
[18:08] <jcoxon> need to get G4FEV's data
[18:09] <fsphil> any thoughts on the weak signal?
[18:09] <natrium42> jcoxon: i like the random apple characters ÿ
[18:11] <jcoxon> fsphil, bust antenna + low altitude + spin
[18:11] <jcoxon> could have been an power issue
[18:11] <jcoxon> as often the first few chars of the string were decodable
[18:11] <RocketBoy> todays launch - note the spin rate - and that the bottle doesn't seem to affect stability
[18:11] <RocketBoy> http://www.flickr.com/photos/16828840@N07/6080466376/in/photostreamhttp://www.flickr.com/photos/16828840@N07/6080466376/in/photostream
[18:13] <fsphil> 2001? :)
[18:13] <fsphil> oh those balloons are cool
[18:13] <RocketBoy> drat
[18:14] <natrium42> http://www.flickr.com/photos/16828840@N07/6080466376/in/photostream
[18:14] <fsphil> now that was the calmest launch I've seen so far :)
[18:16] <daveake> :)
[18:16] <Hibby> lookin god
[18:16] <Hibby> **good
[18:16] <Hibby> although I'm sure god was looking
[18:17] <fsphil> "haha, foolish humans and their balloons... *clicks finger and antenna disconnects*"
[18:18] <RocketBoy> ah the balloon gods - rather like the rocket gods in rocketry
[18:18] <daveake> So, was "god" asleep a few days ago, or is he an Aussie?
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[18:19] <fsphil> think he was busy firing lightning bolts at richard branson
[18:20] <daveake> Ah. Reasonable.
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[18:24] <jcoxon> nearly there...
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[18:25] <Hibby> still no reply about my flights, this is fucking worse than useless
[18:27] <jcoxon> i got bored
[18:27] <jcoxon> http://ukhas.org.uk/projects:picoatlas:picoatlasiv:editdata
[18:28] <RocketBoy> fixed title - and higher def http://www.flickr.com/photos/16828840@N07/6079972347/in/photostream
[18:29] <fsphil> what was different about todays launch, that made it float?
[18:30] <fsphil> title looks really neat RocketBoy
[18:30] <jcoxon> fsphil, we were a bit scientific
[18:33] <jcoxon> time to importat that into excell
[18:33] <RocketBoy> and correct
[18:33] <jcoxon> fsphil, we got hte ascent rate low enough
[18:34] <fsphil> yea it was the lowest rate so far I think
[18:34] <jcoxon> we actually added mass
[18:34] <jcoxon> quite a bit
[18:39] <fsphil> now that seems odd to me. where the balloons filled to the minimum before the extra weight was added?
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[18:50] <Jgrahamc> What's the latest pico news?
[18:51] <Hibby> there we go, sent them a bitch email about this flights mess.
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[18:59] <W0OTM> howdy
[18:59] <W0OTM> whats new in the HAB community?
[19:04] <Dan-K2VOL> hi W0OTM
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[19:04] <Dan-K2VOL> jcoxon had a nice mylar party balloon flight today
[19:04] <Dan-K2VOL> might have reached float as it got to the radio horizon
[19:05] <W0OTM> Dan-K2VOL: very cool!
[19:06] <Dan-K2VOL> actually looking back in the last hour's chats, it seems it was a definite float
[19:06] <W0OTM> Dan-K2VOL: sent you a PM
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[19:08] <Dan-K2VOL> replied
[19:09] <RocketBoy> http://www.flickr.com/photos/16828840@N07/6080623832/ - pic of rx setup at todays launch
[19:09] <Dan-K2VOL> nice steve
[19:10] <jcoxon> hehe that was fun
[19:10] <RocketBoy> yeah - the poles were a great hit - don't know what we would have done without them - added about 10db i reckon
[19:11] <Dan-K2VOL> rocketboy on your superpressure calcs, are you accounting for solar thermal increase in temperature of the helium?
[19:11] <Hibby> strange looks fro passers by?
[19:11] <Dan-K2VOL> above ambient
[19:11] <Hibby> "they really like TV"
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[19:13] <RocketBoy> dan - no - but we were using silver balloons - so doubt it was much
[19:16] <Dan-K2VOL> I wouldn't discount it until you're sure, Mark Caviezel has had concerns regarding aluminized foil that it may absorb a non-negligible amount of IR
[19:17] <Dan-K2VOL> I've not had a chance to test it, but I'd like to
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[19:17] <Dan-K2VOL> very nice flight
[19:17] <Dan-K2VOL> were you targeting a particular differential pressure?
[19:18] <RocketBoy> well less than 0.5psi - which we think is the burst pressure
[19:18] <fsphil> oh love the setup guys
[19:19] <Upu> evening
[19:19] <Upu> so anyone in Norway had a listen to see if its still about ?
[19:19] <RocketBoy> Dan-K2VOL : just thining about it - solar gain won't affect the float height - just the differential pressure
[19:20] <RocketBoy> what do you think the solar gain might be - say fro black
[19:20] <RocketBoy> for
[19:20] <Dan-K2VOL> rocketboy, correct. it'll affect your float when it changes to night if the high temp pressure isn't enough over the low temp pressure
[19:21] <Dan-K2VOL> I don't know, but I think in-situ measurement of pressure/temp would be ideal telemetry
[19:22] <Dan-K2VOL> and of course that darn solar gain will vary based on altitude too
[19:22] <RocketBoy> for night - i guess the density of the air decreases - so the float altitude will drop a bit to match
[19:23] <Dan-K2VOL> hmm perhaps at lower altitudes near ground, but interesting the air temp around 10km doesn't change temperature much from day/night.
[19:24] <RocketBoy> oh well - perhaps another flight at night this time
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[19:25] <Dan-K2VOL> I'm very interested in the calcs and superpressure performance,
[19:25] <Laurenceb_> it will have landed by now id think
[19:25] <Laurenceb_> if its made it across the sea itll be in Norway or Sweden
[19:26] <Dan-K2VOL> there's a material we've found that will withstand up to 4psi if seamed correctly
[19:26] <RocketBoy> nice
[19:27] <RocketBoy> I wondered if 2" wide clear tape would hold
[19:27] <SpeedEvil> Dan-K2VOL: sheet steel?
[19:27] <Dan-K2VOL> haha speedevil
[19:28] <Dan-K2VOL> I think it's got to be thermo or chemical bonding
[19:28] <RocketBoy> I was impressed by mythbusters lead foil balloon (if you have seen it)
[19:28] <Dan-K2VOL> I'm looking for the site, a professional balloon maker who does giant indoor mylar balloons for commercial buildings
[19:28] <Dan-K2VOL> yes that was very cool!
[19:29] <jcoxon> i'm risking #hamradio
[19:30] <Dan-K2VOL> found it! http://balloonkits.com/pages/index.html
[19:30] <RocketBoy> worth a try
[19:30] <Laurenceb_> jcoxon: id say chances are its landed
[19:30] <Dan-K2VOL> haha
[19:30] <jcoxon> Laurenceb_ worth a listen though
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[19:30] <fsphil> definitely
[19:30] <jcoxon> no one in southern norway apparently
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[19:31] <fsphil> RocketBoy, those poles about 6m?
[19:32] <RocketBoy> yeah
[19:32] <RocketBoy> each is about 1.2m - and ther are 5
[19:32] <RocketBoy> they insert one into another
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[19:33] <Jgrahamc> What about hams in Denmark?
[19:33] <fsphil> there are some well priced flagpoles on the net
[19:34] <RocketBoy> we pushed them up from the bottom - jcoxon held the upper poles while i inserted the next pole underneath
[19:34] <fsphil> fibreglass, about £15 with stakes
[19:34] <daveake> ooer
[19:34] <Laurenceb_> I handed in my CV at Apple today but they told me they didn't have any Jobs
[19:34] <Laurenceb_> geddit?
[19:34] <fsphil> boom
[19:34] <RocketBoy> jcoxon - how many more poles do you think you could have manged?
[19:35] <SpeedEvil> And Jobs is still employed at apple.
[19:35] <SpeedEvil> Just not as CEO
[19:35] <jcoxon> 2 perhaps
[19:35] <jcoxon> would need some additional lines
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[19:36] Nick change: GW8RAK_ -> GW8RAK
[19:36] <Upu> should have tried Robs fibre glass pole :)
[19:36] <RocketBoy> yeah - i think with guy lines it would have been easy to push up a load more - but then someone would need to be on the end of the guys
[19:36] <Upu> shame the signal was weak
[19:36] <RocketBoy> upu - yeah that would have been fine with guys
[19:36] <fsphil> the pole I have now would have no chance with a yagi on the top :)
[19:37] <fsphil> I think I'll get this flagpole
[19:37] <RocketBoy> its good solid pole - about 40mm dia
[19:37] <RocketBoy> and about 2mm wall
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[19:51] <fsphil> yay, polystyrene everywhere. that never takes long
[19:52] <daveake> :)
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[19:56] <fsphil> ooooh: http://www.flickr.com/photos/fragileoasis/6079537461
[19:56] <daveake> Oh, that's nice
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[20:00] <Upu> very pretty
[20:01] <jcoxon> grrrr how to export a graph from open office
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[20:01] <Laurenceb_> you use this thing called gnuplot
[20:01] <Hibby> lol
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[20:02] <Hibby> you cna only use that once you've killes yourself
[20:02] <Hibby> fsphil: why'd you get a picture of the moon collating with the terr'ists?
[20:03] <Hibby> you know we am'rcans don't like things that work with terr'ists
[20:03] <Hibby> :p
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[20:10] <jcoxon> http://ukhas.org.uk/projects:picoatlas:picoatlasiv?&#graphs
[20:10] <jcoxon> alt vs time
[20:10] <TimZaman> did anyone miss me?
[20:10] <Upu> id' say that looks like a float
[20:10] <Upu> hey TimZaman 1 sec just checking
[20:11] <Upu> Hey TimZaman can confirm no
[20:11] <Upu> :)
[20:11] <TimZaman> Allright if you change your mind let me know
[20:11] <Upu> roger
[20:11] <TimZaman> confirmed
[20:11] <Upu> saw your SSTV stuff very nice
[20:11] <Upu> using a standard logitech webcam ?
[20:11] <TimZaman> Haha yeah
[20:11] <TimZaman> in lack of a better one
[20:11] <Upu> what do you plug it into ?
[20:12] <TimZaman> beagleboard..
[20:12] <Upu> ah ok
[20:12] <TimZaman> got some pcb's made
[20:12] <TimZaman> http://www.timzaman.nl/
[20:12] <TimZaman> that stack right on top
[20:12] <TimZaman> batterymodule pcb, gprs module pcb, working on the second ntx2-pcb
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[20:13] <Upu> very nice
[20:15] <fsphil> there really should be a good usb webcam somewhere
[20:15] <RocketBoy> jcoxon: I have to admit that looks like a float to me - just wish we had more data
[20:16] <jcoxon> might be able to get some more data from g4fev
[20:16] <RocketBoy> :-)
[20:16] <TimZaman> fsphil: yeah i searched and searched, no luck yet.
[20:16] <fsphil> would it be worth doing a similar flight from here, with a south-east wind it might start floating over england
[20:16] <TimZaman> fsphil: also, it is VERY hard to find a good webcam that is optimized for focussing on infitity
[20:17] <jcoxon> RocketBoy, whats our final decision on fill %?
[20:17] <TimZaman> their optimum area seems to be 10-2m
[20:17] <Upu> fsphil got one of these on order : http://www.logitech.com/en-us/webcam-communications/webcams/devices/hd-pro-webcam-c910
[20:17] <Upu> for the conference
[20:17] <RocketBoy> well the balloons had 40g neck lift right?
[20:17] <TimZaman> Upu: didnt like those..
[20:17] <TimZaman> Upu: we use those at the university for our 3D stereo camera systems
[20:17] <fsphil> TimZaman, I noticed that about the logitechs too. they're all short sighted
[20:18] <Upu> they aren't meant to take pics @ infinity:)
[20:18] <jcoxon> RocketBoy, yeah
[20:18] <RocketBoy> I'll work it out
[20:18] <TimZaman> fsphil: indeed, but it turns out ofcourse that what i really need is just a resampled image tahts smaller, so doesnt matter too much
[20:19] <TimZaman> Upu: do you know a good webcam>? maybe a shutter? good for infinity?
[20:19] <Upu> well my astrophotography friends tend to use the older ones
[20:19] <fsphil> TimZaman, I added a ?show=x option to the live page. will show x images to begin with
[20:19] <Upu> but they can focus them through telescope optics
[20:20] <TimZaman> fsphil: ah great. But before you add more features, can you make a "?" thingy somewhere, because i tend to forget the pagenames or php commands in the statusbar
[20:20] <Upu> trouble is webcams by definition aren't meant to take pics at infinity however the old Phillips ones have a focusable lense as opposed to software focusing
[20:20] <fsphil> rolling shutters are no problem for astrophotography thankfully. not much fast motion
[20:21] <TimZaman> Upu: yeah i noticed there were philips ones that made you choose the 'shutter'speed
[20:21] <fsphil> TimZaman, indeed
[20:21] <Upu> toucams
[20:21] <TimZaman> up to 1/500, which is exactly what i need
[20:21] <Upu> http://www.p4c.philips.com/cgi-bin/cpindex.pl?ctn=PCVC740K&scy=US&slg=AEN
[20:22] <RocketBoy> jcoxon:73% methinks
[20:22] <RocketBoy> what was the payload + ballast weight?
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[20:23] <TimZaman> HAHA toucam!
[20:23] <TimZaman> haha thats like.. 70ies!
[20:23] <jcoxon> 87g + 43g
[20:23] Nick change: fsphil -> craftycabbage
[20:24] <Upu> lol
[20:24] <TimZaman> But i think at least my images would be better than craftycabbage 's since i thought his images were kinda brownish
[20:24] <RocketBoy> not sure if i believe 73%
[20:24] <craftycabbage> TimZaman, my camera lacks an IR filter.
[20:24] <craftycabbage> trees and grass came out brown or pink
[20:24] <TimZaman> craftycabbage: why didnt you add one
[20:24] <craftycabbage> I didn't know it was going to do that
[20:25] <TimZaman> IR images are great though
[20:25] <craftycabbage> at about 30km they became overexposed too - I think a UV filter might be needed that high up
[20:25] <TimZaman> My logitech does have a Carl Zeiss lens. THough still, its made from a composite containing crap and plastic
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[20:26] <craftycabbage> 87g + 43g -- that's enough for a decent payload
[20:26] <craftycabbage> with a small camera
[20:26] <Upu> TimZaman thos Toucams probably do what you want as you can't really go over 640x480 for SSTV anyway and you can manually focus
[20:26] <Upu> I have a 85g Canon A560
[20:26] <Upu> Well A570
[20:26] <craftycabbage> ssdv can do 4096x4096 ;) not that you'd want to mind
[20:27] <Upu> at 300 baud ? Your payload would be back down before it had finished
[20:27] <craftycabbage> lol
[20:27] <TimZaman> 1200baud'd do that quickly
[20:27] <Upu> http://ava.upuaut.net/files/dietA710-goodbits.jpg
[20:27] <Upu> http://ava.upuaut.net/files/dietA710-waste.jpg
[20:27] <TimZaman> craftycabbage: wouldnt it be more logical to scan from top to bottom btw?
[20:27] <craftycabbage> the a560 from hadie3 is in a bad way. I might open it up and have a look, see if it can be stripped apart
[20:28] <craftycabbage> TimZaman, it does?
[20:28] <craftycabbage> well, in 16x16 blocks
[20:28] <Upu> free advice - watch the flash board + capacitor
[20:28] <craftycabbage> ta
[20:28] <craftycabbage> :)
[20:28] <Upu> It slipped out of my hand so I went to catch it and shorted it out on my finger and dropped the thing anyway
[20:29] <craftycabbage> the lcd works and the lens seems fine, but it's just a blank screen so I think the sensor is dead
[20:30] <craftycabbage> I think it was submerged for a while -- the next payload needs drainage
[20:31] <craftycabbage> the painfully yellow thing should be ready this weekend
[20:32] <TimZaman> craftycabbage: my a560 was submerged for 1 hour and it was fine
[20:32] <TimZaman> it took 200 underwater pictures :)
[20:32] <craftycabbage> lol
[20:32] <craftycabbage> remember that -- all green
[20:33] <TimZaman> yeah.. i actually thought the sensor had broken and the whole project was gone to shiet
[20:33] <craftycabbage> it rained the day after landing so I think this one was wet for most of the month it was up the tree
[20:33] <TimZaman> MONTH
[20:33] <craftycabbage> yep :)
[20:33] <TimZaman> yeah corroded
[20:33] <TimZaman> my NTX2 didnt like water much either
[20:34] <craftycabbage> stuck 11m u pa very inaccessable tree
[20:34] <craftycabbage> up a*
[20:34] <TimZaman> craftycabbage: dont you have a handgun?>
[20:34] <TimZaman> shooting branches. or better: a pickaxe?
[20:34] <craftycabbage> nope. you'd think they'd be easy to get here lol
[20:34] <TimZaman> pickaxe=lumberjackaxe
[20:35] <craftycabbage> I got it down with a knife on the end of a 10m pole
[20:35] <TimZaman> HAHA really
[20:35] <TimZaman> got video?
[20:35] <craftycabbage> yea - little hook shaped knife
[20:35] <craftycabbage> afraid not, camera battery died before I got it down
[20:36] <craftycabbage> http://www.flickr.com/photos/fsphil/5821005073/in/set-72157626013096240
[20:37] <TimZaman> craftycabbage: did you test the QTHid (dongle software)?
[20:37] <craftycabbage> that's what I use to tune it
[20:37] <TimZaman> with the nice interface, right?
[20:37] <craftycabbage> yea - bit big for my laptop
[20:38] <TimZaman> sayz NO FCD detected
[20:38] <TimZaman> also said that on WIN7
[20:38] <TimZaman> while FTHid worked..
[20:38] <craftycabbage> hmm
[20:39] <craftycabbage> have you updated the firmware?
[20:39] <craftycabbage> you might need the latest, 18i
[20:39] <TimZaman> whats that then
[20:39] Nick change: NigeyS -> CrunchyCarrot
[20:39] <craftycabbage> I also added this file: # cat /etc/udev/rules.d/20-fcd.rules
[20:39] <craftycabbage> SUBSYTEMS=="usb" ATTRS{idVendor}=="04d8" ATTRS{idProduct}=="fb56" MODE:="0666" SYMLINK+="FCD"
[20:40] <TimZaman> yeah me too
[20:40] <craftycabbage> sets the permissions when the dongle is inserted so non-root users can use it
[20:40] <TimZaman> does show up as /dev/FCD
[20:40] <CrunchyCarrot> all we need now is some mayo and we have a coleslaw :P
[20:40] <TimZaman> still says No FCD detected even if i run as sudo
[20:41] <craftycabbage> TimZaman, http://www.funcubedongle.com/?p=764
[20:41] <craftycabbage> "You may need to grab QTHID 2.2, upgrade the firmware via that, then use QTHID 3.3, as the firmware as supplied is to old for QTHID 3.3"
[20:41] <craftycabbage> new qthid doesn't work on the old firmware
[20:42] <TimZaman> ah i was using 3.0 mabe thats it
[20:43] <TimZaman> nope still no luck
[20:44] <craftycabbage> try updating the firmware in fthid
[20:44] <TimZaman> on WIN7?
[20:44] <craftycabbage> yea. might be the handiest way
[20:45] <TimZaman> advise v18i?
[20:45] <craftycabbage> 18i works well for me
[20:45] <TimZaman> when do i use advice or advise
[20:45] <craftycabbage> advice is given
[20:46] <craftycabbage> hmm
[20:46] <craftycabbage> advise is doing
[20:46] <craftycabbage> that make sense? I'd make a rubbish english teacher
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[20:46] <Lunar_Lander> hello
[20:47] <craftycabbage> hiya Lunar_Lander
[20:47] <CrunchyCarrot> hi Lunar_Lander
[20:47] <Lunar_Lander> hello
[20:47] <Lunar_Lander> nice to see new people
[20:47] <craftycabbage> well...
[20:47] <CrunchyCarrot> shhhhhhh
[20:47] <CrunchyCarrot> ;)
[20:47] <craftycabbage> haha
[20:47] <craftycabbage> hint hint nudge nudge
[20:47] <Lunar_Lander> xD
[20:48] <CrunchyCarrot> wink wink stir stir
[20:48] <Lunar_Lander> xD
[20:48] Action: Upu face palm
[20:48] <CrunchyCarrot> Upu, want to be the mayonaise?
[20:48] <Lunar_Lander> how's life in Northern Ireland?
[20:48] Nick change: Upu -> MankyMayo
[20:48] <craftycabbage> ah ha!!
[20:48] <CrunchyCarrot> lmao
[20:48] <Lunar_Lander> xD
[20:48] <CrunchyCarrot> ukhas coleslaw!!!
[20:48] Action: craftycabbage gives first prize to Lunar_Lander :)
[20:48] Nick change: TimZaman -> Muckduck
[20:49] <CrunchyCarrot> duck and coleslaw.. mm .. nice 1 tim lol
[20:50] <Muckduck> ok im a goner (Win7 18i update) brb
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[20:50] <Lunar_Lander> yeah
[20:50] <Lunar_Lander> duck, coleslaw and M&M
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[20:51] <Lunar_Lander> thanks craftycabbage
[20:51] <Lunar_Lander> :)
[20:53] <Lunar_Lander> http://xkcd.com/941/
[20:54] <craftycabbage> I had another idea looking at that
[20:54] <craftycabbage> ever seen those projectors - a lens on the roof, projecting the view to a table inside a room
[20:55] <craftycabbage> get two, and polarise them using those cheap 3d glasses
[20:55] <craftycabbage> instant passive-3d projection!
[20:55] <craftycabbage> no electronics
[20:55] <Lunar_Lander> yea
[20:56] <craftycabbage> whatever the screen is made of would need to preserve the polarisation
[20:57] <Lunar_Lander> yes
[20:59] Nick change: craftycabbage -> fsphil
[20:59] <Lunar_Lander> http://xkcd.com/936/
[20:59] Nick change: MankyMayo -> Upu
[21:01] <jcoxon> right
[21:01] <jcoxon> my conclusion is that you can float a foil balloon
[21:02] <jcoxon> just need to have a slow ascent rate
[21:02] <fsphil> sweeeet
[21:02] <number10> how many packets did you receive today jcoxon?
[21:02] <fsphil> makes it tricky to track though
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[21:03] <jcoxon> number10, 159 - once i reconstructed some
[21:03] <Lunar_Lander> hi jcoxon
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[21:04] <jcoxon> we spent along time getting the ascent rate right
[21:04] <number10> was a problem - I could not receive anything here - went up on the ladder and thought I had water in the antenna connecotr (is a temporary setup)
[21:04] <fsphil> so you don't think the fill amount matters?
[21:04] <jcoxon> in a barn, and we'd slightly overfilled the balloons so added more mass
[21:05] <jcoxon> fsphil, nah i think it does matter too
[21:05] <jcoxon> check out the spreadsheet on the SPLaT page on hte wiki
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[21:05] <jcoxon> but i think the thing we were doing wrong was having too fast an ascentrate
[21:05] <nelly11> Hi guys! Im looking for a short brainstorming session. My HAB experiment is to be conducted as part of my thesis and the aim is to progressively develope a payload that can be used for a real cubesat mission. I know the near space environment isn't exactly like space but it is close enough and produces better results than groun tests. What I will like to know is what sort of technologies you rekon are suitable for testing in
[21:05] <number10> is there a link to the data jcoxon?
[21:05] <nelly11> for my report word count :) thanks
[21:06] <Lunar_Lander> was it planned to throw away the payload jcoxon?
[21:06] <Randomskk> nelly11: you got cut off at "for testing in"
[21:06] <jcoxon> Lunar_Lander, yeah
[21:06] <jcoxon> number10, http://ukhas.org.uk/projects:picoatlas:picoatlasiv
[21:06] <nelly11> ok
[21:06] <Lunar_Lander> ah ok
[21:06] <jcoxon> here is the beginning
[21:06] <number10> ta
[21:06] <Randomskk> jcoxon: did you get the data you asked for?
[21:06] <nelly11> near space and which ones aren't and why. I have thought of a couple but I need mor
[21:06] <Lunar_Lander> jcoxon : maybe it made it all the way to Norway
[21:06] <Lunar_Lander> but I don
[21:07] <Lunar_Lander> don't think so
[21:07] <jcoxon> Randomskk, yeah i intergrated the tracker data
[21:07] <Randomskk> nelly11: isn't that the research part of your thesis? :P
[21:07] <Randomskk> jcoxon: cool cool
[21:07] <nelly11> lol
[21:07] <jcoxon> though i got most strongs myself
[21:07] <jcoxon> didn't add much
[21:07] <jcoxon> RocketBoy, sadly G4FEV didn't log his data
[21:07] <Randomskk> yea the whole dl thing doesn't work so well for low altitude flights I guess :(
[21:07] <nelly11> yup it is but I can't find much said about it.....I came up with a few myself with rationals
[21:08] <RocketBoy> jcoxon: :(
[21:08] <jcoxon> oh well
[21:08] <Lunar_Lander> do you mean testing devices that go to space nelly11?
[21:08] <Lunar_Lander> hello RocketBoy
[21:08] <nelly11> yes
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[21:08] <number10> did you get the 72" balloons yet Rocketboy?
[21:08] <Lunar_Lander> pressure chambers, dry ice, UV lamps
[21:09] Nick change: Muckduck -> TimZaman
[21:09] <Lunar_Lander> hi TimZaman
[21:09] <TimZaman> thank god for dualboot
[21:09] <TimZaman> hi
[21:09] <TimZaman> yay it's workin'
[21:09] <RocketBoy> number10: yeah - but they weren't foil types - so they are going back
[21:10] <TimZaman> fsphil: have you been playing with all the settings of the FCD?
[21:10] <number10> RocketBoy: I thought they were laex?
[21:10] <number10> latex*
[21:10] <TimZaman> im not sure if i understand much of that
[21:10] <Lunar_Lander> nelly11 : do you mean stuff like that in my list?
[21:10] <RocketBoy> yeah thats what they turned out to be - but it didn't say they were latex on the page
[21:10] <nelly11> Lunar_Lander : yes
[21:11] <RocketBoy> I sort of assumed they were foil
[21:11] <number10> oh
[21:11] <nelly11> Lunar_Lander : things that are and aren't suitable for tests in a HAB
[21:11] <Lunar_Lander> ah that you mean
[21:11] <Lunar_Lander> material tests could be done
[21:11] <Lunar_Lander> live animal tests cannot
[21:13] <nelly11> thanks
[21:14] <Randomskk> well you could do live animal tests for a bit. they'd asphyxiate, and you wouldn't really learn anything.
[21:14] <Randomskk> hey check out this page for ideas http://stars-project.adeptium.com/index.php/-instrumentation
[21:14] <jcoxon> fsphil, so the job now is to design a foil balloon mission
[21:15] <Lunar_Lander> yeah
[21:15] <Lunar_Lander> Randomskk : I thought about fruit flies in a drink bottle as pressure compartment
[21:15] <Randomskk> what would you learn?
[21:15] <Lunar_Lander> but I was told that cosmic rays don't really have an effect on them or their genetics
[21:15] <Randomskk> ..no.
[21:15] <Lunar_Lander> so this experiment would have no yield
[21:15] <TimZaman> there have been worms in space though in a HAB flight
[21:15] <TimZaman> they survived
[21:16] <Lunar_Lander> on such a short flight as on an ARHAB
[21:16] <Lunar_Lander> yeah, in 2004 or so, right?
[21:17] <Lunar_Lander> the man who did that told me he doesn
[21:17] <Lunar_Lander> wouldn't see a point to do that again
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[21:19] <Lunar_Lander> Randomskk : there is no real impact on them if they are in the stratosphere for three hours
[21:19] <Lunar_Lander> it they are in Orbit for a week, that might be a different picture
[21:27] <fsphil> jcoxon, what kind of mission?
[21:32] <jcoxon> hehe well i was thinking - whats the point o the foil flights :-p
[21:32] <fsphil> lol
[21:33] <fsphil> I'd be able to land something in holland with a foil balloon
[21:34] <jcoxon> hehe true
[21:34] <Lunar_Lander> xD
[21:34] <fsphil> plus not needing the permission/notam would be very sweet
[21:34] <Lunar_Lander> jcoxon : you did that when I first came in here, right?
[21:34] <Lunar_Lander> BallastHalo 4 landed there IIRC
[21:35] <fsphil> hey, that was the first night I was on here too Lunar_Lander :)
[21:35] <Lunar_Lander> cool :)
[21:35] <jcoxon> hehe that was fun
[21:35] <fsphil> I met the projectcirrus guys that night too
[21:35] <CrunchyCarrot> hmm a foil mission
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[21:36] <CrunchyCarrot> jcoxon, did you tie the ballons at the top as suggested to prevent the envelope spread ?
[21:37] <jcoxon> CrunchyCarrot, no
[21:37] <Lunar_Lander> btw
[21:37] <jcoxon> though they were close together
[21:37] <Lunar_Lander> It is soo nice to be able to buy Dunhills wine gum here
[21:37] <Lunar_Lander> :P
[21:37] <CrunchyCarrot> yeah saw that bit, looked like they were tied
[21:37] Nick change: CrunchyCarrot -> NigeyS
[21:38] <NigeyS> so what was the total weight today?
[21:38] <jcoxon> 87g for the payload
[21:38] <jcoxon> we added a further 43g to reduce the ascent rate
[21:38] <jcoxon> as we'd overfilled the balloons
[21:39] <fsphil> I'd like to fly the really tiny c328 camera on a foil balloon, but I'm dubious about using 300 baud at such low altitudes
[21:39] <NigeyS> ahh got ya, did you test each balloon seperately so the lift was equal per balloon ?
[21:39] <jcoxon> fsphil, actually today 300 would have been great
[21:39] <jcoxon> as the big issue was mid string fading
[21:39] <jcoxon> but for images - eek
[21:41] <fsphil> error correction would do the job there
[21:42] <Upu> error correction would be useful if it could be done with little overhead
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[21:42] <Lunar_Lander> check that
[21:42] <Lunar_Lander> not a balloon weather
[21:42] <Lunar_Lander> http://science.ksc.nasa.gov/shuttle/countdown/video/chan8large.jpg
[21:42] <fsphil> reed solomon codes are very lightweight - but require a fixed block size
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[21:46] <fsphil> convolutional coding would work better for variable length strings like we use
[21:46] <fsphil> but it would make the output unreadable in a normal rtty decoder
[21:48] <Darkside> what does fldigi do with non-printable ascii characters?
[21:48] <Darkside> i.e. can you pull out a raw bitstream somewhere
[21:48] <fsphil> all but the null gets sent to the text box
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[21:49] <Darkside> fsphil: hmm
[21:49] <Darkside> i might have to play around with that
[21:49] <Darkside> try and do some convolutional coding
[21:49] <Darkside> sure it wont be human readable
[21:49] <Darkside> but meh
[21:49] <fsphil> it would need to be done at a bit level I think, rtty deals in bytes
[21:50] <Darkside> hmm
[21:50] <Darkside> yeah thats a problem
[21:50] <fsphil> or maybe I've misunderstood the codes
[21:50] <Darkside> it goes against all that RTTY does anwyway
[21:50] <fsphil> yea
[21:50] <Darkside> convolutional coding wont help you if you loose the start an stop bits
[21:50] <fsphil> ideally rtty would go
[21:50] <Darkside> fldigi needs a raw FSK mode
[21:51] <Darkside> with no byte framing
[21:51] <fsphil> I had to hack around that for the reed-solomon codes, it can calculate the number of lost bytes based on the sample time
[21:51] <Darkside> maybe a custom mode with some kind of packet framing
[21:51] <Laurenceb_> theres reed solomon on the wiki
[21:51] <Darkside> like a carrier for a certaintime
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[21:52] <Darkside> tbh i think it'd be better to stick to some kind of existing standard for this kind of thing
[21:52] <Darkside> hell, you could implement AX25 with FSK
[21:52] <fsphil> there are no good two-level modes with error correction
[21:52] <Darkside> but i dont think that has error correction anyway
[21:52] <Darkside> mm
[21:52] <fsphil> ax25 doesn't nope
[21:52] <fsphil> just a checksum
[21:52] <Darkside> hmm ok
[21:52] <Darkside> i guess the next logical place to go is MFSK
[21:53] <Darkside> but how does that handle the shifts changing
[21:53] <fsphil> in fldigi, it doesn't
[21:53] <fsphil> though it should
[21:53] <fsphil> there's no reason it couldn't
[21:53] <Darkside> mm
[21:53] <Darkside> would be nice if it could start a packet with a high and a low tone
[21:53] <Darkside> and have fldigi work out the shifts from that
[21:54] <fsphil> ooh, have it track shifts too
[21:55] <NigeyS> Darkside
[21:55] <NigeyS> you use 5v vreg on meganut normally ?
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[21:59] <Darkside> NigeyS: no, 3.3
[22:00] <Darkside> that board needs to be 3.3v
[22:00] <NigeyS> ahh oki thats fine, was worried about the resistors for the ntx2 .. thought ure values were based on 5v
[22:01] <Darkside> nope
[22:01] <Darkside> all based on 3.3v
[22:01] <NigeyS> awsome
[22:02] <Lunar_Lander> so meganut is a big flight computer?
[22:03] <Darkside> Lunar_Lander: same circuit as mininut, just through-hole
[22:03] <Darkside> oh, and no sd card or pressure sensor
[22:03] <Darkside> just temp, gps, and telemetry
[22:05] <Lunar_Lander> ah
[22:05] <Lunar_Lander> so what do you have
[22:06] <Lunar_Lander> meganut, mininut, micronut
[22:06] <Lunar_Lander> right?
[22:06] <Darkside> yes, though i don't plan on making any meganuts
[22:06] <Darkside> that was just for NigeyS
[22:06] <Lunar_Lander> ah
[22:09] <NigeyS> Darkside, theyre in transit :D
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[22:10] <Lunar_Lander> what about Giganut and nanonut?
[22:10] <Lunar_Lander> ;)
[22:10] <SpeedEvil> peanut?
[22:10] <Darkside> cool NigeyS
[22:10] <Darkside> i hope they work :P
[22:10] <Darkside> Lunar_Lander: haha
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[22:11] <Darkside> giganut will probably be a beagleboard strapped to something
[22:11] <Darkside> nanonut... dunn
[22:11] <Darkside> dunno
[22:11] <fsphil> microatx :)
[22:11] <Darkside> probably won't happen
[22:11] Action: SpeedEvil forsees Pinut in the future.
[22:11] <Darkside> not unless we find a decent radio IC that doesn't require many external components
[22:11] <SpeedEvil> If that happens.
[22:11] <Darkside> i could get brave and use a CC1111
[22:11] <Darkside> learn how to code for 8051s
[22:12] <SpeedEvil> http://www.raspberrypi.org/
[22:12] <SpeedEvil> http://www.raspberrypi.org/?p=78#more-78
[22:12] <SpeedEvil> Oh neat - it boots!
[22:12] <NigeyS> Darkside, me to lol!
[22:15] <Lunar_Lander> http://xkcd.com/924/
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[22:25] <Lunar_Lander> http://xkcd.com/916/
[22:26] Action: SpeedEvil brings the conversation back on-topic.
[22:26] <SpeedEvil> http://xkcd.com/585/
[22:28] <Lunar_Lander> ROFL
[22:28] <daveake> :)
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[22:54] <Lunar_Lander> http://xkcd.com/901/
[22:55] Action: SpeedEvil ponders if you can do FFT on the colour of expectant mothers, and pick up babies heartbeat.
[23:08] <TimZaman> bye guys
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[23:08] <NigeyS> nn tim
[23:08] <NigeyS> off to, nn all
[23:08] <SpeedEvil> Night.
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[23:08] <TimZaman> catch you on the flipperdyflip
[23:08] <Lunar_Lander> good night Tim
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[00:00] --- Fri Aug 26 2011