highaltitude.log.20131107

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[08:02] <ibanezmatt13> morning
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[08:12] <fsphil> morn
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[08:16] <ibanezmatt13> better be off to college
[08:16] <ibanezmatt13> adios
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[09:08] <cm13g09> morning all
[09:12] <DL1SGP1> hi cm13g09
[09:12] Nick change: DL1SGP1 -> DL1SGP
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[09:27] <cm13g09> another day of work...
[09:27] <cm13g09> (old) new server to build....
[09:27] <cm13g09> requires can of compressed air
[09:27] <cm13g09> and we're all out of it :(
[09:37] <DL1SGP> chances that the caretaker has a compressor?
[09:38] <cm13g09> DL1SGP: chances that he'll let me borrow it: 0
[09:38] <DL1SGP> darn
[09:38] <cm13g09> guess I'll have to go get some from town
[09:38] <DL1SGP> did you make his cat float or something?
[09:38] <cm13g09> lol - no
[09:38] <cm13g09> just we're in managed offices
[09:39] <cm13g09> and we don't see the caretakers
[09:39] <cm13g09> let along anyone else :P
[09:39] <DL1SGP> right they normally act in the underground
[09:39] <fsphil> ninja caretaker
[09:40] <DL1SGP> the shepard of the ninja goats
[09:40] <cm13g09> to give you a clue why I want the compressed air.....
[09:40] <cm13g09> server been sat on the floor for 3 years...
[09:40] <cm13g09> under a desk
[09:40] <cm13g09> never serviced ;)
[09:41] <cm13g09> there's dust hanging off the processor ;)
[09:41] <DL1SGP> take photos, put on facebook "First Bio-Oeganic Server in Operation"
[09:41] <DL1SGP> *organic even
[09:41] <DL1SGP> damn I should open the window shutters
[09:43] <cm13g09> lol
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[09:49] <ibanezmatt13> morning
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[09:54] <DL1SGP> hi matt
[09:56] <ibanezmatt13> Hi Felix
[09:57] <DL1SGP> how is life with you today?
[09:58] <ibanezmatt13> not so bad
[09:58] <ibanezmatt13> reading a really good book called the Backroom Boys
[09:59] <DL1SGP> great
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[10:01] <fsphil> https://twitter.com/AstroKarenN/status/398195542255099904/photo/1/large
[10:01] <ibanezmatt13> nice
[10:02] <Hix> she gets some great images, did you see the sunset over the Himalaya the other day?
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[10:14] <fsphil> didn't Hix
[10:14] <Hix> lemme see
[10:17] <fsphil> oh wow, she's got some amazing photos
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[10:18] <Hix> fsphil http://goo.gl/LBnb0L
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[10:24] <fsphil> https://twitter.com/AstroKarenN/status/356056459743723520/photo/1/large
[10:25] <Hix> yeah quite cool - she seems to spend a lot of time playing with the Nikon gear onboard
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[10:42] <nats`> hi
[10:43] <DL1SGP> hi nats`
[10:44] <nats`> how are you DL1SGP ?:)
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[10:44] <DL1SGP> I am fine thanks! and yourself?
[10:44] <nats`> sick as hell but happy I received my new baby
[10:45] <nats`> and he's working like a charm
[10:45] <DL1SGP> you make babies work, that is worse than child-labor!
[10:45] <DL1SGP> :)
[10:45] <DL1SGP> I hope you feel better quick
[10:46] <nats`> child labor is the future !
[10:46] <nats`> noway I keep working for more than 5 years :p
[10:46] <DL1SGP> I am alot better compared to yesterday, not entirely in float and a tiny bit below weather but well
[10:46] <fsphil> strange phrase that, under the weather
[10:47] <nats`> I perfectly see the image :)
[10:47] <nats`> you're like a pico balloon fighting in the ice :)
[10:48] <DL1SGP> yeah. the unstable WX here is nuts... yesterday morning 6c this morning 14c
[10:56] <Herman-PB0AHX> hi all
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[10:57] <DL1SGP> Goedendag Herman
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[10:59] <seventeen> UpuWork : tell me about ordering options.
[11:02] <UpuWork> hi there seventeen
[11:02] <UpuWork> pm
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[11:05] <UpuWork> afk now but you have a private message
[11:13] <seventeen> Done. How well does cash on delivery work ?
[11:13] <UpuWork> pm :)
[11:14] <mattbrejza> hey, anyone know where the blue foam stuff comes from?
[11:14] <eroomde> building merchants
[11:14] <UpuWork> hindleys
[11:14] <eroomde> we got it in 8ft x 2ft sheets
[11:14] <SIbot> In real units: 8 ft = 2.44 m
[11:14] <mattbrejza> ah thanks
[11:15] <eroomde> it mills quite nicely
[11:15] <mattbrejza> hmm building merchants means no delivery for such a large item
[11:15] <eroomde> with a high speed router anyway
[11:15] <eroomde> don't get myra'd down by UpuWork's suggestions
[11:17] <mattbrejza> alternative is regular polystrene but the blue stuff seems easier to work iwth
[11:18] <eroomde> it machines a lot better yep
[11:18] <eroomde> it is more desne though
[11:18] <eroomde> dense*
[11:22] <mattbrejza> i found some 'yelofoam' stuff
[11:22] <mattbrejza> density: 30kg/m3
[11:22] <mattbrejza> nice to see them publish that
[11:25] <Hix> http://goo.gl/aLqHz1 mattbrejza
[11:25] <Hix> they're normally local too
[11:26] <mattbrejza> yea i think we used some of that stuff last time
[11:26] <mattbrejza> mind you the person who did the box did a pretty good job, so maybe regular polystrene will be fine
[11:26] <mattbrejza> still havnt found the density of it though
[11:27] <mattbrejza> varies from 15-35kg/m3 it seems
[11:30] <daveake> I prefer the blue stuff - much easier/neater/cleaner to work with
[11:31] <daveake> Denser, but stronger so you can use thinner sheets or cut back on the tape you need to stop the white stuff falling apart
[11:34] <mattbrejza> itll probably be a case of what we can get locally
[11:39] <mfa298> mattbrejza: you've a pretty good selection of places to try around here!
[11:39] <mattbrejza> wickes and B&Q are the ones i know of
[11:40] <mfa298> I think there's a Travis Perkins between the football stadium and itchen bridge although I'm not sure how much of that sort of stuff they do
[11:40] <mattbrejza> they dont give their prices on their website which is annoying
[11:41] <mfa298> I think when I looked at copper pipe a few years ago it wasn't much different to Wickes/ B&Q prices although that might not mean much
[11:42] <eroomde> i recall travis perkins having some
[11:43] <mattbrejza> hey jonsowman wanna go for a drive? :P
[11:43] <eroomde> might be worth calling them first
[11:44] <mfa298> there's also a Hobby Craft out the other side of Woodmill and The Range down a bit from Wickes, but they're more arty farty than manly engineering.
[11:44] <mattbrejza> yea their website is pink purple
[11:44] <mattbrejza> ewww
[11:45] <mattbrejza> however they do sell polystrene cats which could be useful to house a pico payload
[11:46] <mfa298> would go well with those Hello Kitty balloons someone found
[11:47] <Geoff-G8DHE-M> Some one will look up and think a Cat has been tied to a balloon
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[11:51] <mfa298> hmm,hobby craft could be a good location for payload boxes - http://www.hobbycraft.co.uk/hobbycraft-polystyrene-box-with-flat-lid/591590-1000
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[11:51] <mattbrejza> they have hollow polystrene balls too
[11:51] <mattbrejza> and polystrene animals
[11:51] <mfa298> I saw those as well
[11:53] <mfa298> and googly eyes to stick on the polystene animals
[11:53] <mattbrejza> im guessing 130x130x75 is that things external dimensions?
[11:53] <mattbrejza> but £3 is pretty good
[11:54] <mfa298> I'd guess thats the external size
[11:54] <mfa298> so maybe 100x100x50 inside
[11:55] <mattbrejza> seems anough for a tracker and camera
[11:55] <mfa298> might even just fit a raspberry pi
[11:55] <mattbrejza> or http://www.hobbycraft.co.uk/hobbycraft-polystyrene-heart-box/591591-1000 :P
[11:56] <mfa298> although that might require being creative with batteries
[11:58] <mattbrejza> urgh why does chrome take so long to load some pages :/
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[11:59] <mfa298> and if you think the games of spot the payload in a tree are getting too easy http://www.hobbycraft.co.uk/hobbycraft-foam-leaf-stickers/565440-1005
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[12:01] <Maxell> mfa298: intresting for fox hunt
[12:02] <Maxell> for habs I say maddness
[12:08] <jonsowman> mattbrejza: yeah sure
[12:08] <mattbrejza> tbh that reformed box seems pretty good
[12:12] <mfa298> £3 for not having to spend time making a box seems like it could be a Win
[12:12] <mfa298> I'm tempted to get one and see if you could fit a Pi in.
[12:12] <mattbrejza> if it is 100x100 thats plenty
[12:12] <mattbrejza> itll be cosy but w/e
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[12:13] <daveake> I have a variety of solid and hollow balls and egg shapes. Been meaning to check the larger ones for Pi-compatibility
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[12:14] <fsphil> EggPi
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[12:14] <fsphil> which doesn't sound that nice
[12:15] <daveake> And you'd have the challenge of coding the entire tracker as a shell script
[12:15] <craag> ha
[12:15] <fsphil> you'll have a hard time protecting it from crackers
[12:16] <mfa298> Just hope it doesn't land on and then fall off a wall
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[12:17] <mfa298> and for whoever was thinking about Pingu in Space the other day: http://www.hobbycraft.co.uk/hobbycraft-polystyrene-penguin-180mm/591585-1000
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[12:17] <nats`> wooo \o/
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[12:23] <mattbrejza> http://www.bbc.co.uk/news/uk-england-essex-24844756 that crane...
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[12:24] <mfa298> there was a bit on TV the other night about getting the crane into place.
[12:24] <mfa298> they were shipped from China on a large ship.
[12:24] <daveake> with a buffer crane? :)
[12:24] <daveake> bigger
[12:25] <daveake> bugger
[12:25] <mfa298> was probably on the One show.
[12:25] <mfa298> Oddly it wasn't a bigger crane
[12:25] <mfa298> rails and a pulley system (and a short bit of time to do it in)
[12:27] <mfa298> Looks like it was Mondays One show: http://www.bbc.co.uk/iplayer/episode/b03gf4p1/The_One_Show_04_11_2013/
[12:28] <mfa298> I think it was in a couple of parts during the show
[12:31] <Geoff-G8DHE-M> Friend of mine has been doing all the construction photo documentation for that London Gateway http://www.maritimephotographic.co.uk/ he just isn't allowed to publish yet!
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[13:09] <Steve_G0TDJ_> Hi Guys
[13:11] <craag> Afternoon Steve
[13:11] <Steve_G0TDJ_> Hi Phil
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[13:12] <UpuWork> hi Steve_G0TDJ_
[13:12] <Steve_G0TDJ_> HI Anthony
[13:12] <Steve_G0TDJ_> My package arrived, thnks
[13:12] <UpuWork> you pung
[13:12] <UpuWork> ok cool
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[13:36] Nick change: KipK -> KipK_away
[13:38] <Herman-PB0AHX> hi Steve
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[13:41] <Steve_G0TDJ_> Hi Herman, apologies I was AFK
[13:44] <DL1SGP> yo Steve_G0TDJ_
[13:45] <Steve_G0TDJ_> Hey Felix :-)
[13:45] Nick change: Steve_G0TDJ_ -> Steve_G0TDJ
[13:53] <Hix> Totally useless fact of the day: "Honi soit qui mal y pense" appears in the comments of the source code for the master ignition routine of the Apollo 13 lunar module
[13:55] <Herman-PB0AHX> i was also very bussy
[13:55] <Steve_G0TDJ> No worries. I have work to do now LOL
[13:56] <Herman-PB0AHX> my rotator transformator was burnd out grgrgr but i fix new transformator in now
[14:12] Nick change: KipK_away -> KipK
[14:13] <DL1SGP> gladly my Armstrong-Rotator does not have transformators, but if I make it work to hard it can burn out :)
[14:14] <Herman-PB0AHX> yessss it is working now verry wel with the new transformator i am happy :-0 :-0
[14:15] <Herman-PB0AHX> now i can use the elevation
[14:15] <Herman-PB0AHX> agn
[14:17] <DL1SGP> Leuk!
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[14:27] <nats`> Hix it's interesting to know how this french sentence became an english roayl family sentence :)
[14:27] <nats`> politic everywhere :D
[14:32] <Hix> nats` Most of the monarchy and gentry in them days spoke french
[14:32] Nick change: KipK -> KipK_away
[14:32] Nick change: KipK_away -> KipK
[14:36] <nats`> yep
[14:36] <nats`> even in the 100 years war
[14:37] <nats`> and that's surprising :)
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[14:42] <Hix> not really, given the Norman conquest...
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[14:49] <nats`> they needed a french talking administration yes, but why even the king peoples spoke french in these days
[14:49] <nats`> when france or england had colony they didn't start to speak foreign language
[14:52] <nats`> I have to read this evening :)
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[15:06] Nick change: uwe__ -> uwe_
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[15:12] <jcoxon> afternoon all
[15:18] <DL1SGP> good afternoon jcoxon
[15:19] <jcoxon> hi DL1SGP
[15:19] Action: jcoxon is calling CQ on 433.5000 (SE London)
[15:19] <DL1SGP> good luck :)
[15:19] <UpuWork> what like actual voice ?
[15:19] <adamgreig> and you're spotting in #ha? :P
[15:19] <jcoxon> yeah, got my ft790 all setup
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[15:20] <jcoxon> so good old 1W
[15:21] <gonzo_> there is probably more activity flying than terrestrial based on 70cm
[15:21] <jcoxon> i once got a voice contact on uhf
[15:22] <jcoxon> they were modding a pwr i think and left it on a freq
[15:22] <jcoxon> he was so suprised that i called CQ
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[15:24] <gonzo_> not sure I've ever called cq on 70cm
[15:24] <jcoxon> a voice!
[15:24] <gonzo_> 70MHz, yes lots
[15:24] <gonzo_> wow, best have a sit down !
[15:25] <gonzo_> (not sure i've ever called CQ on 2mtrs fm either)
[15:25] <fsphil> you got a response?
[15:25] <jcoxon> ummm i think it was another conversation
[15:26] <fsphil> I've heard a few people on 70cm, but they either didn't hear me or ignored me
[15:26] Action: jcoxon is being stubborn and not getting out his ft817 for 5W
[15:26] <gonzo_> psphil on 4mtrs? yes. There are reasonable nukbers on
[15:26] <fsphil> gonzo_: 70cm
[15:26] <fsphil> I've nothing here that'll do 70mhz
[15:26] <fsphil> man this is confusing
[15:27] <fsphil> 4m is better
[15:27] <fsphil> 70mhz is to like 70cm
[15:27] <mfa298> I think I've called CQ on 70cms a few times but almost never got a reply
[15:27] <fsphil> too*
[15:27] <mfa298> usually after I've got bored calling CQ on 2m
[15:27] <fsphil> I try the odd call on HF
[15:27] <fsphil> I've never once had a response
[15:27] <gonzo_> i've always had a soft spot for 4mtrs. As it's onlt recent that you could buy kit. Before that yopu had to build at least part of it. So you got a more interedsting qso
[15:28] <PA3WEG> I trust you will one FUNcube is up Jules ;)
[15:28] <mfa298> many years ago I even tried CQ on 6m FM - shortly after getting a 6/2/70 handie
[15:28] <PA3WEG> one = once
[15:28] <fsphil> 6m is a sadly wasted band
[15:28] <fsphil> people should use that more
[15:29] <gonzo_> afternoon wooter. Yep, I'll try for FC when she is flying. Though have some rebuilding to do to my sat system. Had an 'incedent' that took out the tracking/lnas etx
[15:29] <fsphil> there's a distinct lack of software for decoding funcube telemetry
[15:30] <gonzo_> I'm sure it will come phil
[15:30] <PA3WEG> yes, due to be released this weekend actually
[15:30] <fsphil> probably at the last minute, and probably windows only
[15:30] <PA3WEG> ironing out the last bugs
[15:30] <PA3WEG> unfortunately yes, windows tested ATM
[15:31] <PA3WEG> but it should run in linux as well
[15:31] <fsphil> hopefully the source will be available with a friendly license
[15:31] <PA3WEG> thats were all the delays are coming from, making the audiolib platform independent
[15:31] <gonzo_> are you writing it wooter?
[15:31] <fsphil> there are hundreds of good audio libraries already
[15:31] <PA3WEG> Ceative commons
[15:31] <fsphil> well not hundreds
[15:31] <fsphil> but more than a few
[15:32] <PA3WEG> and no, I am not writing it, no time for it as I build the satellite side of things ;)
[15:32] <gonzo_> recon you have the more fun side of the job
[15:32] <PA3WEG> :D thats what I like to think as well
[15:33] <PA3WEG> our main programmer was hit by power outage after the storm
[15:33] <PA3WEG> so no coding
[15:33] <PA3WEG> lasted three days that he actually freed up to do the work
[15:33] <gonzo_> what's the official forecast launch date? (I don't really watch the AMSAT news feeds)
[15:33] <DL1SGP> heh wouter, nasty storm that was
[15:33] <fsphil> developing something like this would probably be better done on github, as a group effort
[15:33] <PA3WEG> 21st of Nov
[15:35] <fsphil> should be very cool
[15:35] <PA3WEG> not really, as a larger group is hard to manage with lots of things changing, but I generally agree that this should be the way forward
[15:35] <PA3WEG> this is why we open-source it in the first place
[15:35] <PA3WEG> plus, this software was only ever meant, and written, for the operators
[15:35] <fsphil> dl-funcube :)
[15:36] <PA3WEG> it was later extended to be the public one, as no-one responded to our call for programmers to do the public one
[15:36] <PA3WEG> but because of that, it was not fit to see the light of day
[15:36] <jcoxon> maybe we should add it to dl-fldigi
[15:36] <DL1SGP> you forgot to include the words "awsomeness, free coffee, pizza flatrate" on the call for free programmers :D
[15:37] <fsphil> that would be cool
[15:37] <PA3WEG> plus, the telemetry formats and warehouse mechanisms were also still changing a lot, so you would be coding against a moving target...
[15:37] <PA3WEG> the basic format has been published 2 years ago, so anyone interested could develop it
[15:38] <gonzo_> sounds like my day job!
[15:38] <PA3WEG> if someone feels he can implement BPSK and FEC in DL-FLDIGI, I will give him or her all support!
[15:38] <gonzo_> changing targets I mean
[15:38] <fsphil> got a link handy for the telemetry format?
[15:38] <PA3WEG> ;)
[15:39] <PA3WEG> http://funcube.org.uk/working-documents/
[15:39] <jcoxon> how about we put out a bounty to add it to dl-fldgii
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[15:39] <fsphil> are there any audio samples of the signal?
[15:39] <gonzo_> a bounty? As in a bribe or a threat?!
[15:40] <PA3WEG> I think a bounty as in the candybar
[15:40] <PA3WEG> if you have those in the UK
[15:40] <fsphil> twix
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[15:40] <fsphil> mars bar might be better
[15:41] <PA3WEG> http://forum.funcube.org.uk/viewtopic.php?f=2&t=14
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[15:41] <PA3WEG> topic with links to the recordings. the official page has to be made still
[15:41] <fsphil> ah thanks PA3WEG. I was looking for these yestserday but didn't find them at all
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[15:43] <PA3WEG> glad I could help
[15:43] <PA3WEG> things are really busy here to gear up towards the launch
[15:43] <gonzo_> "Munchies" are more cube shaped. If they exist anymore?!
[15:43] <fsphil> I remember those
[15:43] <gonzo_> I bet it is. 2 weeks and counting
[15:43] <eroomde> a truncated square-based pyramid
[15:43] <eroomde> of pleasure
[15:44] <gonzo_> not seen them since I was about 8yrs
[15:47] <Babs> shard esque proportions, but truncated by about Floor 10. They still exist.
[15:48] <Babs> and if you remember them, you will also remember their mint incarnation, "Mintola"
[15:53] <eroomde> i don't, sadly
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[15:57] <Babs> according to the interweb, they were called mintola until 1995. You must have been on solid food by that time eroomde surely?
[15:58] <eroomde> yep but no recollection
[15:58] <eroomde> but i definitely had munchies
[15:58] <eroomde> i was happily at primary school in 1995
[15:58] <eroomde> learning about the egyptians
[15:58] <eroomde> probably
[15:59] <Babs> i can imagine you, age 6, standing in front of the other kids in the playground telling them that although they resembled a square based pyramid, topologically they were exactly the same as an icosahedron
[15:59] <eroomde> or merely, a dot
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[16:00] <Babs> but not a toroid
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[16:10] <gonzo_> I used to go to my gran's on Sundays and she always has a sweet bag for eack of the kids. Getting the one with the munchies was the goly grail
[16:23] <PA3WEG> goly grail ;) sounds nasty ;)
[16:24] <PA3WEG> AFKish for work
[16:25] <ve6ts> excellent i got my GPS functionaltity added to my payload... now i need to wait until the weather improves for a launch
[16:27] <jcoxon> ve6ts, aprs or rtty?
[16:28] <ve6ts> rtty on this one (first gps on rtty), i've done aprs before
[16:31] <jcoxon> awesome
[16:31] <mfa298> the ukhas method is spreading far and wide!
[16:32] Nick change: KipK -> KipK_away
[16:34] <jcoxon> indeed
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[16:34] <ve6ts> yup, it is a cool idea
[16:34] <jcoxon> ve6ts, will it be easy to get more listeners in your area?
[16:35] <ve6ts> i donno, that is the one unknown
[16:35] <jcoxon> it sometime takes a bit of time
[16:36] <jcoxon> a few well placed emails seem to work
[16:36] <jcoxon> certainly announce hte launch on the ukhas mailing list
[16:39] <mfa298> talking to the local ham clubs seems to have done well for getting interest.
[16:41] <gonzo_> doing a talk for them is a good way to get them involved
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[16:53] <ve6ts> it's also good that i have a cabin 115km NE of here that i can setup my own station as well
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[16:54] <ve6ts> that's the only downside to rtty here, nobody has recievers, but i like the rtty better as it is much cheaper and uses less bandwidth
[16:54] <ve6ts> often a lighter payload as well
[16:55] <ve6ts> not many hams around here have 70cm gear from what i've seen
[16:56] <ve6ts> i've previously launched on 10 meters with CW, that was fun, nobody qsl'd it
[16:56] <ve6ts> i hope to try again
[16:57] <ve6ts> i also got approved for fr24.com for them to send me a reciever and upload to their site (they track airliners)
[16:57] <mfa298> probably depends on what radios they have, if they've got one of the common shack-in-a-box radios they often have HF-70cms
[16:58] <ve6ts> most of the people around here bough HF or HR/2m (including me) until i got my 817
[16:58] <mfa298> otherwise it's a good opertunity to get them to invest in a rtl-sdr or FCD Pro+
[16:59] <ve6ts> most of the hams around here don't do much experimentation, only talk on 2m, it is why i left the local club, i'm mostly interested in building/experimentation
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[17:41] <wd8mnv> the rtl dongles are an inexpensive way to get on UHF
[17:42] <DL1SGP> agreed
[17:45] <ve6ts> how much are they?
[17:45] Nick change: KipK -> KipK_away
[17:45] <wd8mnv> about $10 USD shipped
[17:45] <wd8mnv> 3 week wait... so order early
[17:46] <wd8mnv> even I can afford that
[17:46] <ve6ts> wow, that is cheap; how sensative are they?
[17:46] <wd8mnv> they're not bad
[17:47] <wd8mnv> you can get a preamp, and hook it to a decent antenna
[17:47] <ve6ts> where can you get them?
[17:47] <wd8mnv> e-bay
[17:48] <ve6ts> is it the same as a tv tuner basically?
[17:50] <wd8mnv> ya... it's a dvb-t ? tuner for europe, but dumps out I/Q signal from 24MHz to about 1.6 GHz
[17:52] <PE0SAT> Have a look at: http://www.rtlsdr.com/
[17:52] <mfa298> the ones I've got and used recently are SPC-0155 but anything with RTL2832 chip and R820T or E4000 Tuner is good
[17:53] <mfa298> the E4000 may cost more as that tuner got discontinued.
[17:53] <ve6ts> i have an eyetv, i donno what chip that has, i'm looking it up now
[17:53] <wd8mnv> r820T may be a better chip anyway
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[17:54] <Geoff-G8DHE> The E4000 chips have greater frequency stability compared to the R820T as well.
[17:55] <wd8mnv> the R820T tunes lower... down into CB
[17:55] <mfa298> I think it depends on what you want. I think the E4000 goes higher and the R820T lower, and they have slightly different gaps I think
[17:56] <wd8mnv> i wouldn't pay a premium for the E4000 at this point thou
[17:57] <Geoff-G8DHE> You can by all types on the RTL-SDR site as well, a bit more expensive than EBAY however!
[17:57] <mfa298> found the freq ranges
[17:57] <mfa298> Elonics E4000 52  2200 MHz with a gap from 1100 MHz to 1250 MHz (varies)
[17:57] <mfa298> Rafael Micro R820T 24  1766 MHz
[17:58] <wd8mnv> the one thing you will want os a cable that matches it, usually a MCX conector... like a SMA to MCX cable
[17:59] <mfa298> or butcher the antenna that comes with it. Chop the cable in half and put a suitable connector on the end.
[17:59] <wd8mnv> that too : )
[17:59] <Geoff-G8DHE> or see this page http://360.g8dhe.net/hab_flights/HABAMP_and_DONGLE/
[17:59] <mfa298> or buy one with the larger TV socket (Belling Lee) and swap it to an sma
[18:09] <ve6ts> i might get one of these
[18:13] <ve6ts> are all of them based on the R820T the same.
[18:16] <x-f> almost - if you get to see their inside before buying, get the one with an ESD protection diode near the antenna connector
[18:22] <ve6ts> yup the one i'm looking at has it
[18:23] <ve6ts> now how many should i order :)
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[18:31] <f5vnf> ve6ts: I bought mine from ebay uk , cost £15.00 inc postage to france esd as standard
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[18:33] <CSIA> Hey guys
[18:33] <wd8mnv> i'd get 2... one to keep stock, one for mods
[18:33] Nick change: nick___ -> nick_
[18:33] <ve6ts> ya i was thinking 2 as well
[18:34] <CSIA> Guys how can we make the HAB Raspberry Pi Projects educational. For example what benefit could it have to the scientific community?
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[18:35] <ve6ts> well it can tech kids to get interested in science, weather, etc
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[18:36] <CSIA> Hmm true
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[18:41] <ve6ts> ordered
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[18:44] <ve6ts> i spent almost 100 cdn on balloon stuff today (4 gps's and 2 sdr)
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[18:47] <fsphil> it's an expensive hobby this
[18:47] <ve6ts> yup, for sure, mostly with the large launches i do
[18:47] <ve6ts> the micro's aren't too bad
[18:48] <fsphil> yea
[18:48] <ve6ts> there is a school near here who has done a large launch, i'm trying to get the teacher interested in doing a micro with the kids
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[18:55] <ve6ts> check out my directional yagi: http://pic.obsd.com/2013-05-19/P5190033.JPG_lg.jpg or foldeded up http://pic.obsd.com/2013-05-19/P5190034.JPG_lg.jpg
[18:57] <fsphil> no trouble measuring that
[18:58] <ve6ts> hehe
[18:58] <ve6ts> i took it on the plane with me to a remote balloon launch, as a fold up tracking antenna, it came in handy
[18:58] <ve6ts> it is very light as well
[19:05] <wd8mnv> i have an old tape i can do that too, as soon as i replace it
[19:05] <ve6ts> that tape didn't roll up anymore
[19:06] <wd8mnv> neither does the one o have]
[19:06] <ve6ts> hehe, good use for it
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[19:18] <mfa298> CSIA: if you want to make your payload more sciency you can add various sensors to measure things (temperature, pressure are common)
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[19:19] <CSIA> We were thinking about adding those. But we are such noobs to this its hard getting of the ground
[19:20] <mfa298> there are potentially realted programming things you did
[19:20] <CSIA> Im sure we will figure things out. We have to start building soon
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[19:20] <mfa298> one person put together a dashboard that would show live stats during the flight
[19:20] <mfa298> see http://www.mike-stirling.com/hab/
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[19:21] <mfa298> Best method is start with small bits and get those working then build them together
[19:21] <mfa298> so maybe start off with something that can just query a temp sesnor
[19:21] <CSIA> That seems crazy. I wonder how that person did that.
[19:21] <mfa298> then start getting it to also get location from gps
[19:22] <mfa298> the data is all available from the habitat system (http://habitat.habhub.org/ept/)
[19:22] <CSIA> So a GPS module would allow us to track Altitude, Ascent, Ground Speed etc
[19:23] <mfa298> you just need someone that's happy writing dynamic web applications
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[19:23] <CSIA> Well if we just get one of the ground then we will work towards making it better
[19:24] <mfa298> gps generally does location (latitude, longitude, altitude) and from there you can work out speeds etc.
[19:24] <mfa298> you might also be able to get direction of travel and speed from the gps in one of the other strings
[19:25] <ve6ts> it can always be calculated as well from 2 points
[19:25] <mfa298> the main tracking page http://spacenear.us/tracker/ will calculate ascent rate for you
[19:26] <CSIA> How do we make use of the HabHub ground UHF recievers
[19:27] <mfa298> send data in the way described on the wiki and announce the launch
[19:28] <CSIA> Thank you I will check those out now
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[19:28] <mfa298> the recieving stations are just people (mostly people on here) who have a radio and the software and listen to the balloons
[19:28] <mfa298> the information on here http://ukhas.org.uk/guides:linkingarduinotontx2 is a good starting point of what to send and how
[19:29] <mfa298> although on the pi you generally use the UART rather than turning a gpio pin on and off
[19:29] <ve6ts> CSIA if you want a sample using amtel studio, i have some code (not sure it's clean and documented now) but working
[19:29] <CSIA> What do you mean?
[19:30] <ve6ts> CSIA rtty requires two different tones, not just an on/off unless you combine two tone sources
[19:31] <CSIA> You have lost me now. :)
[19:31] <ve6ts> CSIA transmission on the radio requires a digital mode (like rtty for the UHF ground stations)
[19:31] <CSIA> Right.
[19:31] <ve6ts> CSIA have you listened to an rtty signal yet?
[19:31] <mfa298> it might help to also read http://ukhas.org.uk/guides:tracking_guide
[19:32] <craag> CSIA: Have a read of the wiki article ^^ , it explains it a bit easier :)
[19:32] <ve6ts> a low tone means "off" and a high tone is the bit you are trying to send
[19:32] <mfa298> In the background section there's a short sample clip of a rtty signal
[19:32] <fsphil> we send the digital data (0 and 1) using two different tones (low and high)
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[19:32] <CSIA> Yes I am familiar of that. Essentially a Digital signal
[19:32] <CSIA> No analouge
[19:33] <fsphil> well
[19:33] <ve6ts> CSIA exactly, where did i loose you?
[19:33] <fsphil> it's digital data expressed with an analogue signal :)
[19:33] <CSIA> I was lost but now I understand
[19:33] <ve6ts> to make an rtty signal you need a tone generator (sound card or pwm)
[19:33] <CSIA> Right
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[19:34] <CSIA> So I will pick up a Radiometrix soon and go from their
[19:34] <ve6ts> then you need to connect it up to the transmitter
[19:34] <ve6ts> the rest is software
[19:34] <CSIA> I understand.
[19:35] <mfa298> you'll want the NTX2 and a few resistors (as is used in the http://ukhas.org.uk/guides:linkingarduinotontx2 example)
[19:35] <fsphil> it's a very neat system
[19:35] <mfa298> although getting something to recieve it first will help (you can then also try receiving other flights)
[19:35] <CSIA> So we need one of those boards to connect it the Raspberry Pi
[19:36] <ve6ts> CSIA you could use the soundcard on the pi to connect to the transmitter
[19:36] <mfa298> the breadboard (the white thing it's plugged into in the images) will do ok for testing
[19:36] <fsphil> ve6ts: we usually use the uart on the pi
[19:36] <ve6ts> fsphil probably simpler then a sound card
[19:36] <mfa298> but it's not good for flight. you'll want something to solder it to for that
[19:37] <CSIA> I should wait until I buy the parts first.
[19:37] <CSIA> Then I can do it following the tutorials
[19:37] <ve6ts> hehehe, i flew a breadboard once... it was heavy :)
[19:37] <mfa298> the humble pi boards look to be a good option for the Pi and electronics
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[19:37] <fsphil> ve6ts: did it survive?
[19:37] <ve6ts> fsphil yes
[19:37] <fsphil> nice!
[19:37] <ve6ts> i was worried something would pop out
[19:38] <gonzo_> ve6ts, we don't ususlly modulate the ntx2 with audio. That would be AFSK. Usually we key the modulation like with DC data, which pulls the freqyency, so FSK
[19:38] <ve6ts> what happened is i had the payload all soldered up and the night beflore launch it wasn't working, so i quickly build one on the breadboard (didn't want to solder all of that the night before)
[19:38] <mfa298> CSIA: when you start soldering things together this is probably the thing to get http://shop.ciseco.co.uk/k001-humble-pi/
[19:39] <CSIA> So essentially that allows us to connect all our modules to the board
[19:39] <ve6ts> gonzo_ i might try that as well, simpler then my pwm to program, but extra soldering
[19:39] <mfa298> that board has a set of holes connected up in 3's, you then solder your parts onto it and connections to the gpio header
[19:40] <ve6ts> gonzo_ probably also a cleaner signal
[19:40] <mfa298> it then plugs into the gpio header and sits on top of the pi board
[19:40] <fsphil> I'd use the Pi's audio to do aprs
[19:40] <ve6ts> fsphil that would be cool
[19:40] <fsphil> shame it doesn't have an input
[19:40] <fsphil> instant igate :)
[19:40] <ve6ts> i thought it did?
[19:41] <fsphil> I tried with a USB sound card a while back
[19:41] <fsphil> the pi only has audio out
[19:41] <ve6ts> that is unfortunate
[19:41] <fsphil> yea
[19:41] <fsphil> an input would have been super handy
[19:41] <mfa298> for the Pi iGate I did come accross http://www.tnc-x.com/TNCPi.htm
[19:45] <mfa298> ve6ts: people have used pwm on the AVR's for rtty, although toggling a gpio with the resistor network is probably sligtly easier to understand for beginners
[19:45] <ve6ts> gonzo_ do you find alot of frequency shift using resistors for the fsk?
[19:46] <ve6ts> mfa298 ya for sure, i also use an AM transmitter
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[19:46] <mfa298> previously most of the shift has been from the NTX2 shifting with temperature.
[19:47] <mfa298> the NTX2b seems to be better in that respect (it uses a TCXO)
[19:47] <ve6ts> CSIA you may want to see some ballooning pics i have on my site: http://arawr.ca
[19:47] <CSIA> I will take a look now
[19:47] <ve6ts> i have noticed some shift with my am transmitter as well (they are only $5 each)
[19:48] <ve6ts> upto 500khz shift
[19:48] <mfa298> some of the other TX modules have been found to randomly die when subjected to cold temperatures for a period of time.
[19:48] <mfa298> 500KHz !?! I don't think we've had a shift like that
[19:49] <ve6ts> that was a payload with no foam and using my AM transmitter
[19:49] <ve6ts> i'm going back to foam
[19:49] <CSIA> we have a large budget but its hard to justify everything
[19:50] <CSIA> We can afford the payload but everything on the ground to track it seems expensive
[19:50] <mfa298> I think the worst frequency shifts we've had during a flight are around 3KHz.
[19:50] <ve6ts> CSIA ya a school i helpped out had the same problem, so i provided all of the ground gear (i had to fly there) you should get someone to help in your area
[19:50] <mfa298> CSIA: if it's a big payload (which with a Pi it probably is) I suspect the expensive parts will be Balloon and Helium, and you can re-use or sell them on after.
[19:51] <ve6ts> i was worried what airport security would say with all of the strange stuff i carried aboard
[19:51] <CSIA> Exactly. We just have a problem with ground tracking equipment.
[19:51] <mfa298> if you want a decent software based radio reciever the Funcube dongles are good and are around £150
[19:51] <ve6ts> i use hydrogen gas to save alot of money
[19:52] <CSIA> Wouldn't hydrogen go through the latex faster
[19:52] <CSIA> Because of the smaller molecules
[19:52] <adamgreig> not really. it's diatomic while helium isn't
[19:52] <adamgreig> H2 vs He
[19:52] <adamgreig> not a huge difference
[19:52] <ve6ts> on my site you can see which launches are H2, H2 also has 8% more lift then He
[19:52] <adamgreig> if anything I think helium escapes faster
[19:52] <mfa298> smaller atoms, bigger molecules
[19:52] <CSIA> So we should use Hydrogen
[19:53] <ve6ts> most of my launches were H2, also not as rare
[19:53] <ve6ts> CSIA make sure you have someone who is experienced in handling H2 with you
[19:53] <CSIA> Hmm that seems like a good idea. We have many science teachers hence why we are a Science school
[19:53] <ve6ts> H2 is under high pressure and is flamable
[19:54] <mfa298> CSIA: if you're doing it with the school it's something to talk to them about. H2 is cheaper and potentially a better gas, but for some people/places it's seen as too risky.
[19:54] <ve6ts> exactly, most of our school launches have been He
[19:54] <CSIA> I know our school has more than enough hydrogen and helium, more than we could ever use hahaha
[19:54] <mfa298> H2 may also have a higher upfront cost as you may need to buy a special regulator.
[19:54] <ve6ts> but all of my personal launches (except 1) were H2, don't ask how i got a free tank of He
[19:55] <ve6ts> yes my h2 regulator was 6 times more then my He reg
[19:55] <ve6ts> but for me, since i do many launches it is cheaper in the long run
[19:55] Nick change: KipK_away -> KipK
[19:55] <ve6ts> CSIA where are you?
[19:55] <CSIA> Cornwall
[19:56] <CSIA> http://www.cambornescience.co.uk
[19:56] <ve6ts> oh in the UK, there is a Cornwall in Canada as well
[19:56] <mfa298> CSIA: one thing for you and the school to consider is will you only ever do one launch or is it something that's going to get done yearly (or even more often)
[19:56] <CSIA> Probably more often. As it can be used to teach future students
[19:56] <Upu> evening
[19:56] <CSIA> Good evening
[19:56] <Upu> I'm working with a school atm
[19:57] <mfa298> if it becomes regular the cost of a radio receiver and regulators becomes fairly small compared to balloon & gas on a per launch basis
[19:57] <ve6ts> i've worked with 2 schools before, the students have alot of fun
[19:57] <Upu> a budget of £350 should see you for antenna, fun cube and bits to make a tracker
[19:57] <CSIA> I mean we have everything we could want. Just not ground equipment.
[19:57] <Upu> or
[19:57] <ve6ts> most of my cost goes into balloons and gas
[19:57] <Upu> the whole reason I did the Habduino was for schools
[19:57] <CSIA> Habduino
[19:58] <CSIA> ?
[19:58] <Upu> fail bot
[19:58] <Upu> www.habduino.org
[19:58] <CSIA> Yeah I discovered the site. Stupid question
[19:58] <Upu> finally got the damn things working
[19:59] <CSIA> Problem is that we have to use a Raspberry Pi to be entered into the competition
[19:59] <chrisstubbs> Upu someone has been busy soldering!
[19:59] <Upu> yeah looking at a version for the Pi
[19:59] <Upu> Pi will be more complex
[19:59] <Upu> as the pi is generally rubbish for hab
[19:59] <Steve_G0TDJ> Well done Anthony
[19:59] <Upu> cheers :)
[19:59] <CSIA> Its rubbish but our only option :P
[19:59] <Upu> indeed
[19:59] <craag> YOu could use the habduino for tracking, and the pi for something else onboard.
[19:59] <fsphil> the Pi would be infinitly better if the audio out was availble on the internal header
[19:59] <Upu> yeah there is that
[19:59] <ve6ts> CSIA why is it the only option?
[19:59] <Upu> in fact
[20:00] <Upu> here is an option
[20:00] <Upu> you could fiddle the Habduino code to continue as a tracker
[20:00] <CSIA> ve6ts we are in a competition for the best project with a Raspberry Pi
[20:00] <Upu> but output data via serial to the Pi
[20:00] <Upu> to do with as you will
[20:00] <ve6ts> CSIA ah, that makes sense
[20:00] <Upu> hey thats a good idea
[20:00] <Upu> why didn't I think of that
[20:00] <Steve_G0TDJ> Er... you did
[20:00] <Upu> boom head shot
[20:00] <CSIA> With the PA Consulting team
[20:00] <Upu> thats really easy
[20:00] <CSIA> We can win unto £1000
[20:00] <ve6ts> wow
[20:01] <CSIA> They even provided all the equipment for use
[20:01] <fsphil> where do I sign up?
[20:01] <Steve_G0TDJ> HABduino-Pi is born!
[20:01] <CSIA> I think its schools only. Haha
[20:01] <mfa298> Upu: or go both ways and send data back to the habduino to tx.
[20:01] <ve6ts> man i wish i could come to some of your launches in the UK
[20:01] <CSIA> Where are you situated?
[20:02] <ve6ts> western Canada, too far
[20:02] <fsphil> I'm sure lots of us would like to come over and launch there ve6ts :) certainly me anyway
[20:02] <ve6ts> 8 hours of flying
[20:02] <ve6ts> fsphil ya, you can stay at my cabin
[20:02] <CSIA> Slightly. However our school has many international trips to Canada
[20:02] <CSIA> We have 14 students out their now
[20:02] <Steve_G0TDJ> UKHAS Field Trip!
[20:02] <fsphil> perfect!
[20:02] <CSIA> Perfect
[20:03] <CSIA> If anyone sees anyone that is situated in Cornwall or near. let me know
[20:03] <fsphil> I flew over cornwall once, if that counts
[20:03] <CSIA> Not quite ;)
[20:04] <CSIA> On the 3rd of October we sent 7 students to Winnipeg for ten days
[20:04] <CSIA> To the Fort Richmond Collegiate
[20:04] <fsphil> nice
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[20:04] <ve6ts_> wow that was a bad timed computer crash
[20:05] <fsphil> my school trip was to amsterdam
[20:05] <CSIA> I have been to Thailand and Singapore this year
[20:05] <mfa298> we just had a day trip to france :(
[20:05] <mattbrejza> CSIA: we're in soton, and i tihnk the nearest group i know of
[20:05] <mattbrejza> soton = southampton
[20:05] <fsphil> aaaww, jealous CSIA
[20:05] <ve6ts_> CSIA i have a balloon launching cabin: on site on http://arawr.ca
[20:05] <mfa298> although exchange trips to Germany and Zambia for the lucky few
[20:05] <fsphil> one of the guys in my office is about to fly to australia -- cairns
[20:06] <Steve_G0TDJ> I went to Whitstable this year...
[20:06] <fsphil> lol
[20:06] <fsphil> well that's a place
[20:06] <Steve_G0TDJ> Nice day-trip :-)
[20:06] <CSIA> Hmm southhampton isn't too far. What do you mean by a launching cabin?
[20:06] <CSIA> Somewhere we can go and launch with experienced people right?
[20:06] <mfa298> I think the most exotic place I've visted this year was Grenwich, bunch of strange people there, they were all walking about with small circuit boards.
[20:07] <ve6ts_> CSIA i own a cabin in the badlands, 1 acre, away from the city that i use for balloon launches
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[20:07] <CSIA> What the exact address?
[20:07] <mattbrejza> CSIA: have you contacted the met office?
[20:07] <ve6ts_> and yes we have lots of experience people
[20:07] <mattbrejza> they have a site next to you
[20:07] <CSIA> mattbrejza not yet
[20:07] <fsphil> badlands is such a negative name. they should call it nicelands
[20:08] <ve6ts_> CSIA it is google mapped on the launch location on http://arawr.ca with an aprs beacon
[20:08] <ve6ts_> fsphil hehe, well you can't grown much there
[20:08] <fsphil> aw
[20:08] <CSIA> I believe the met office is close but we never found it
[20:08] <fsphil> my ideal house would be in a forest
[20:08] <ve6ts_> fsphil me 2, on a lake :)
[20:08] <fsphil> with a lake nearby
[20:09] <CSIA> ve6ts your in the US
[20:09] <ve6ts_> CSIA Calgary, AB, Canad
[20:09] <mattbrejza> people at the uni have launched at hte met office site, not sure exactly where it is
[20:09] <mfa298> downside with a forest is there are lots of HAB magnets around.
[20:09] <ve6ts_> Canada
[20:09] <ve6ts_> mfa298 ya they are called trees
[20:09] <CSIA> Canada :D
[20:09] <ve6ts_> my cabin is on the outside of a small village approx 500 people in a valley with a creek
[20:10] <CSIA> How did you find the nearest Met Office guys?
[20:10] <ve6ts_> it was the price of a nice car
[20:10] <mfa298> although oddly the New Forest (local to me) has some large areas with very few trees (it's also pretty old)
[20:11] <ve6ts_> CSIA did you see the balloon burst pics on the main page of http://arawr.ca? they are my favorite so far
[20:11] <CSIA> Yeah I have checkout your site its so awesome
[20:11] <CSIA> Did you take them with the PiCam
[20:12] <ve6ts_> no, that was frame by frame from a go pro
[20:12] <CSIA> Nice. How do I sent a message directly to someone?
[20:12] <CSIA> Just like how you guys are tagging me in messages?
[20:13] Nick change: KipK -> KipK_away
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[20:13] <mattbrejza> this is their site: http://goo.gl/maps/rTPul
[20:13] Nick change: KipK_away -> KipK
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[20:13] <ve6ts> finally main computer back up
[20:14] <mfa298> CSIA: highlights in the main chat window (like this message should be) happen because your named at the start of the line
[20:14] <mfa298> everyone will see the message, but it just highlights it as you've been named
[20:14] <CSIA> mattbrejza: I live around 5 minutes away from them
[20:15] <mattbrejza> its worth asking, theyll be likely to help out a local school id reckon
[20:15] <CSIA> I will visit them next week
[20:16] <ve6ts> it's easier to launch a ballon here, 1 email and we can launch
[20:16] <ve6ts> the micro's not even an email is required
[20:16] <mattbrejza> also i dont think youll need to ask for flight launch permission at the metoffice site
[20:17] <CSIA> Probably not
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[21:07] <ve6ts> what is the best, easiest material to make a zero pressure balloon out of?
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[21:10] <Herman-PB0AHX> .
[21:10] <SpeedEvil> Lead foil.
[21:12] <SpeedEvil> More seriously - mylar has excellent tearing resistance and is available in good thicknesses.
[21:12] <SpeedEvil> http://www.youtube.com/watch?feature=player_detailpage&v=4jP7Trrc8WE#t=143 for example of tests
[21:12] <ve6ts> hehe, i think mylar would work, how do you join it?
[21:13] <SpeedEvil> Heat sealing works - at high enough temperature.
[21:13] <SpeedEvil> Polythene is another option
[21:14] <LeoBodnar> Mylar is not thermosetting material. It burns through.
[21:14] <LeoBodnar> *is thermosetting
[21:14] <LeoBodnar> It does not melt
[21:14] <ve6ts> glue then?
[21:15] <LeoBodnar> Yeah, -50C glue would work
[21:15] <SpeedEvil> err
[21:16] <SpeedEvil> I was sure I'd heat-sealed it in the past
[21:16] <LeoBodnar> It could have been a sandwich with Mylar+PE
[21:16] <SpeedEvil> Possibly
[21:16] <LeoBodnar> Regular Mylar is horrible to work with
[21:17] <ve6ts> plastic probably easier for the first one?
[21:18] <SpeedEvil> Mylar is a plastic, even if thermosetting
[21:18] <SpeedEvil> Polythene is quite easy to work with
[21:19] <SpeedEvil> How ambitious a zero pressure
[21:19] <LeoBodnar> Mylar is glass-like fold it over and it creases. Fold it twice and you get a pinhole
[21:20] <SpeedEvil> You don't really care much about pinholes in ZP though
[21:20] <LeoBodnar> Agree
[21:23] <ve6ts> i want to do a ZP with a micro payload for fun
[21:23] <ve6ts> i wonder how a garbage bag would do, not sure it's lift and it probably won't float high
[21:24] <LeoBodnar> Depends on the bag - 5-10km should be fine
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[21:29] <fsphil> oh hello B-24
[21:29] <DL1SGP> heh
[21:29] <Reb-SM3ULC> LeoBodnar: cool with the nr 24
[21:30] <LeoBodnar> I'm back :D
[21:30] <ve6ts> the ballons are comming back?
[21:30] <DL1SGP> LeoBodnar: standard 70cm ISM or anything else you need ears on?
[21:31] <LeoBodnar> Standard 434.500 and 2m APRS
[21:31] <DL1SGP> okay, happy float B-24
[21:31] <LeoBodnar> :D
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[21:33] <Reb-SM3ULC> LeoBodnar: any "planned" trajectory?
[21:33] <Laurenceb__> sup folks
[21:33] <DL1SGP> Plan as usual: From Silverstone to the Sky and thenthen... may it fly... errr float
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[21:34] <LeoBodnar> No plan, just warming up after a week off.
[21:35] <Laurenceb__> good to see you back in action :P
[21:35] <DL1SGP> getting rid of withdrawal symptoms and such?
[21:35] Action: Laurenceb__ has been having another week of CE paperwork
[21:35] <Laurenceb__> funtimes
[21:36] <Geoff-G8DHE> Oh darn it my aerials are still down, probably won't be back up for another week yet :-(
[21:36] <fsphil> you're exporting from china?
[21:37] <Laurenceb__> heh
[21:37] <Laurenceb__> im writing hundreds of pages of junk
[21:37] <LeoBodnar> One thought that occurred to me was that excessive free lift might not be such a good thing. It keeps balloon in the freezing layer for longer and more ice accumulates before the descent. So it's coming down later with more ice/wter
[21:37] <Laurenceb__> and saving hundreds of thousands of pounds..
[21:37] <Laurenceb__> i guess it cancels out
[21:38] <Laurenceb__> paying people for this stuff is not a sane plan
[21:39] <LeoBodnar> Are you creating an internal "due diligence" folder?
[21:39] <Laurenceb__> due diligence?!
[21:39] <Laurenceb__> nope :P
[21:40] <LeoBodnar> Well, internal documentation for CE
[21:40] <Laurenceb__> i spent today evaluating safety of indicator LEDs...
[21:40] <Laurenceb__> its all application of ISO stuff and risk assesments
[21:40] <Laurenceb__> risk factors, failure probabilities etc
[21:41] <bertrik> is it nice work like you dreamt it would be?
[21:41] <Laurenceb__> heh
[21:42] <Laurenceb__> theres some lethal experiments of rabbits
[21:42] <Laurenceb__> *on
[21:42] <Laurenceb__> but thats top secret and NDA due to PETA/ALF
[21:43] <Laurenceb__> LeoBodnar: I was thinking about 434mhz versus APRS
[21:43] <Laurenceb__> isnt 434 the third harmonic?
[21:43] <Laurenceb__> so should the 2m antenna work ok for 434?
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[21:44] <LeoBodnar> It does Laurenceb__
[21:44] <Laurenceb__> i see
[21:45] <LeoBodnar> I am using a 2m dipole with 70cm GP radials oO
[21:45] <Laurenceb__> but the impedance network on the silabs transceiver doesnt work well?
[21:45] <Reb-SM3ULC> LeoBodnar: simulated trajectory?
[21:46] <LeoBodnar> Looks like at the moment there is enough radiated energy for both 2m and 434MHz
[21:46] <Laurenceb__> interesting
[21:47] <x-f> Reb-SM3ULC, http://ready.arl.noaa.gov/hypubout/143943_trj001.gif
[21:47] <Reb-SM3ULC> x-f: tack!
[21:47] <LeoBodnar> Actually weird radiation pattern for 434MHz with squashed side lobes is better as it sends more energy towards horizon
[21:48] <LeoBodnar> Looks like a bus route :D
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[21:48] <bertrik> it's the trans-siberia express
[21:59] RAMM25 (2e25d40d@gateway/web/freenode/ip.46.37.212.13) joined #highaltitude.
[21:59] <RAMM25> hello every body
[21:59] <RAMM25> hello for every body
[22:04] <Laurenceb__> is this the start of a rap?
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[22:10] <ibanezmatt13> Was the Air fR
[22:10] <ibanezmatt13> France concorde crash only 13 years ago?
[22:11] <ibanezmatt13> thought it was earlier than that!
[22:11] <RAMM25> Laurenceb__, well, maybe some body should starting rap)
[22:12] <x-f> no updates for B-24?
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[22:15] <chrisstubbs> soldering with hot air is great, but it still helps if you solder your AVR on the right way around...
[22:15] <DL1SGP> lol chrisstubbs
[22:16] <ibanezmatt13> easily done I guess, I nearly did :p
[22:16] <chrisstubbs> I was excited and got carried away okay
[22:17] <ibanezmatt13> that's how mine nearly went wrong :)
[22:17] <ibanezmatt13> at least you can just hot air it off again, I'd have to get it off with desoldering braid! :P
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[22:19] <chrisstubbs> yeah that was nice :) Still tidied it up with braid after i removed it
[22:19] <chrisstubbs> time to go stick the board outside and see if it locks
[22:19] <tweetBot> @nerdsville: NERD-1 breadboard Arudino prototype is transmitting! #hab #ukhas http://t.co/DFr94A9j8F
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[22:19] <ibanezmatt13> awesome
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[22:22] <ibanezmatt13> I'm gonna go read for a bit, and then hopefully sleep tonight. night all :)
[22:23] <chrisstubbs> night
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[22:23] <SpeedEvil> https://connect.arc.nasa.gov/kepler2?launcher=false 'better stars , better planets, using stellar rotation to refine estimates of stellar parameters'
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[22:28] <RAMM25> hey guys, I came up a song. want to listen to real rap?
[22:29] <Lunar_Lander> hey
[22:29] <RAMM25> what?
[22:30] <fsphil> yo yo
[22:30] <Lunar_Lander> hey as in "hello" :)
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[22:31] <RAMM25> okay, i see that you are want little rap
[22:32] <RAMM25> i'm starting
[22:32] <RAMM25> hello every body
[22:32] <RAMM25> hello for every body
[22:33] <RAMM25> somebody wants
[22:33] <RAMM25> to slap my body
[22:33] <RAMM25> there is a one little balloon in the air
[22:33] <RAMM25> doing controlled by the ARV
[22:33] <RAMM25> this rap song for the everyone
[22:33] <RAMM25> i'm gonna sing for all that want.
[22:33] <RAMM25> fin
[22:33] <fsphil> got a load of test hook clip probe things -- wish I'd got them sooner, great for programming boards without needing to solder headers
[22:34] <fsphil> B-24 stopped working?
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[22:41] <chrisstubbs> What type did you get fsphil?
[22:41] <chrisstubbs> my hooky ones are okay for board edges or pins but wont go into the ICSP header
[22:43] <fsphil> they're little grabby ones: http://proto-pic.co.uk/ic-hook-with-pigtail/
[22:43] <fsphil> I've got a couple that are hook shaped too
[22:43] <chrisstubbs> Ah they are cool
[22:44] <fsphil> yea these wouldn't work so well for holes in the middle of the board
[22:44] <chrisstubbs> A press fit ICSP header would be handy with tapered pins
[22:44] <fsphil> pogo pins?
[22:44] <fsphil> something like https://www.sparkfun.com/products/11591
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[22:46] <chrisstubbs> er
[22:46] <chrisstubbs> just watching the video
[22:46] <chrisstubbs> the guy has purple painted nails
[22:47] <fsphil> haha
[22:48] <fsphil> he'd almost get away with it if it was any other colour
[22:48] <chrisstubbs> glittery purple
[22:49] <chrisstubbs> these pogo pins dont look like they lock in
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[22:49] <fsphil> they don't. you press down while programming
[22:49] <fsphil> I'd like an edge connector
[22:49] <chrisstubbs> you could probably get away with just lodging header in at an angle for that. Will have to try it
[22:49] <fsphil> three on the top layer, three on the bottom
[22:49] <fsphil> and a little connector that just clips on the side
[22:50] <chrisstubbs> yeah that would be neat, with contacts along the edge like a PCI card
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[22:50] <fsphil> exactly
[22:51] <fsphil> and a little crocodile clip thingy to connect to them
[22:52] <Reb-SM3ULC> fsphil: i see updates, but floats at 1700 m.... :/
[22:53] <fsphil> ah yes it's updated
[22:53] <fsphil> that really is low
[22:53] <LeoBodnar> I have bought this MAX-7 module from eBay long time ago. It shows! :D
[22:53] <LeoBodnar> It came directly from China
[22:55] <Laurenceb__> something not right here
[22:55] <Laurenceb__> -20C...
[22:55] <Laurenceb__> i think its much higher
[22:56] <LeoBodnar> It looks like it had been crippled to 1600m
[22:56] <Laurenceb__> yeah
[22:57] <LeoBodnar> Going to be an interesting flight
[22:57] <Reb-SM3ULC> a dip in the height...
[22:59] <LeoBodnar> Who needs to know balloon altitude anyway?
[23:00] <Lunar_Lander> Physicists!
[23:00] <LeoBodnar> Physicists can deduce it from temperature
[23:01] <Lunar_Lander> :P
[23:01] <gonzo_> engineers?
[23:03] <chrisstubbs> Think I see B-24
[23:04] <chrisstubbs> Yep :) very strong
[23:04] <craag> that was a jump !
[23:04] <chrisstubbs> yeah altitude shot up haha
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[23:05] <Lunar_Lander> xD
[23:05] <Lunar_Lander> hey craag !
[23:05] <craag> hi Lunar_Lander !
[23:05] <Reb-SM3ULC> craag: a jump it was
[23:06] <Lunar_Lander> how's life?
[23:06] <Lunar_Lander> hej Reb-SM3ULC :)
[23:06] <Reb-SM3ULC> Good evening mr Lunar!
[23:06] <Lunar_Lander> :)
[23:06] <Lunar_Lander> brb :)
[23:07] <craag> Not bad, just got back from the pub to find my drunk russian housemate chasing a cat around the house while laughing hysterically.
[23:07] <craag> Cat looks a little creeped out.
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[23:09] <fsphil> as it should be
[23:10] <fsphil> that said, cats always look a bit creeped out
[23:10] <Reb-SM3ULC> russians are never drunk, it's their default-state ;)
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[23:11] <PB0NER> $$B-24,66,230935,131107,52t3733,0.6457,6593,6,-31,3.8,0lae2
[23:12] <fsphil> altitude seems more sensible now
[23:12] <fsphil> that was weird
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[23:14] <Reb-SM3ULC> hyperjump
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[23:16] <Reb-SM3ULC> o well, yagi pointing SE, fl-digi on, should get some sleep and hope i might hear it tomorrow
[23:16] <PB0NER> Netherlands is alive and tracking!
[23:16] <Reb-SM3ULC> s/SE/SW
[23:17] <Wouter-[pa3weg]> yeehaa ;)
[23:17] <nats`> I love agilent sells multi 100k$ equipment and sell the software multi k$
[23:17] <nats`> -_-
[23:17] <PB1DFT> grrr
[23:17] <PB1DFT> goddamn time....
[23:17] <Wouter-[pa3weg]> slapen!
[23:18] <Lunar_Lander> back
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[23:18] <Lunar_Lander> craag, ohhhhh
[23:20] <chrisstubbs> "Please read careful before your shopping"
[23:21] <fsphil> lol
[23:21] <fsphil> I find that funny because grammer
[23:22] <chrisstubbs> Wish i had picked up some TPS61201's the other night on my farnell order
[23:22] <Upu> evening
[23:22] <chrisstubbs> Getting them from aliexpress seems like a terrible idea
[23:22] <chrisstubbs> Hey Upu
[23:22] <fsphil> I *always* forget something when ordering from farnell
[23:23] <fsphil> and it's usually the cheapest item
[23:23] <Upu> yup
[23:23] <Upu> always
[23:23] <chrisstubbs> the problem is they have everything you will ever want. so you can never be content
[23:24] <mfa298> at least it looks like cpc is now totally free delivery (no minimum order value) - I might be testing that out soon.
[23:24] <fsphil> cpc are often cheaper than farnell too
[23:25] <Upu> strugging with B-24
[23:25] <Upu> is signal weak ?
[23:26] <Miek> there's a nice service called oncecall that's cpc and farnell merged into one, it's limited to universities though :<
[23:27] <Upu> rules me out
[23:27] <chrisstubbs> Upu, its just gone very weak for me
[23:27] <chrisstubbs> was brilliant about 10 mins ago
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[23:28] <fsphil> upu's yagi is draining all the photons
[23:28] <Upu> heh
[23:28] <Upu> usually weak
[23:29] Nick change: heathkid|2 -> heathkid
[23:29] <fsphil> rubbish evening here. All I've managed to do is make an LED blink and further untidy the room
[23:29] <Upu> I was getting concerned as this is the first tracking I've done since I put the antenna in a odd position because of that storm
[23:29] <Upu> just concerned I've buggered something
[23:30] <gonzo_> bugger, lossed another Leohab
[23:30] <gonzo_> missed
[23:30] <Upu> I can see it
[23:37] <chrisstubbs> Im off, laters
[23:37] <fsphil> nite!
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[23:39] <Lunar_Lander> btw
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[23:40] <Lunar_Lander> it is fun to prepare a HAB payload inbetween three days of a electron paramagnetic resonance workshop, tuning the software during a matlab course and then fixing the hardware in 15 min breaks
[23:40] <Lunar_Lander> yeah
[23:44] <fsphil> there are very few people who can answer that
[23:44] <fsphil> infact just one :)
[23:45] <Steve_G0TDJ> Anyone got a dial frequency for B-24 please?
[23:46] <mfa298> I'd assume standard frequency
[23:47] <Steve_G0TDJ> Looks like it's out of my range then Mike
[23:47] <mfa298> I think Leo said it was a 2m & 70cm balloon
[23:47] <Steve_G0TDJ> 2m? APRS?
[23:47] <mfa298> so the 70cm might be suffering from the matching circuit
[23:48] <mfa298> yup aprs
[23:48] <Steve_G0TDJ> Neat
[23:48] <mfa298> 21:31 < LeoBodnar> Standard 434.500 and 2m APRS
[23:48] <Steve_G0TDJ> Cheers
[23:48] <mfa298> and
[23:48] <mfa298> 21:45 < LeoBodnar> I am using a 2m dipole with 70cm GP radials oO
[23:49] <mfa298> which sounds like an interesting antenna design
[23:49] <PE2G> Steve_G0TDJ: I have it on 434.500.9 cursor 1206 Hz
[23:50] <Steve_G0TDJ> OK I'll see what I can find
[23:50] <Steve_G0TDJ> Thanks
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[23:55] <Steve_G0TDJ> PE2G: No, nothing here. I just saw the telemetry update. Thanks for your help though.
[23:56] <PE2G> Steve_G0TDJ: Are you inside the blue circle?
[23:57] <Steve_G0TDJ> Yes but I have high terrain towards N, NE
[23:57] <Steve_G0TDJ> Could be causing issues
[23:57] <PE2G> Yeah
[23:58] <Steve_G0TDJ> Anyhow, I think it's bedtime! Catch you later - 73
[23:58] <PE2G> Later, 73
[23:58] Nick change: Steve_G0TDJ -> Steve_G0TDJ_AFK
[00:00] --- Fri Nov 8 2013