highaltitude.log.20120329

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[04:10] <Dan-K2VOL> hey darkside
[04:10] <Dan-K2VOL> you up?
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[06:52] <eroomde> fsphil: to asnwer your question last night
[06:53] <eroomde> i noticed the pitch of the pips was changing on the long pip
[06:53] <eroomde> which in combination with the announcement of an altitude made me think it might be some kind of altimeter
[06:53] <eroomde> a variometer, whose pitch is proportional to rate. glider pilots use them
[06:54] <eroomde> but then the voice announcement made little sense- why would you need a cockpit instrument to be transmitted on fm?
[06:54] <eroomde> so i thought it might be for a ground based pilot
[06:54] <eroomde> so i had a quick google and voila
[07:00] <fsphil> nice one ed holmes
[07:01] <fsphil> I thought maybe the tones where some kind of sensor but couldn't think of what
[07:01] <UpuWork> morning
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[07:02] <number10> I think I may have to splash out on a decent radio - using the scanner yesterday was near on impossible to decode Joey
[07:02] <number10> morning UpuWork
[07:02] <eroomde> it does make a big difference
[07:02] <eroomde> i am a big fan of my icom
[07:02] <number10> I notice that you did well with ir icm eroomde
[07:03] <number10> ir icm == you icom
[07:03] <eroomde> hsving the fine control of filters and autmatic gain control response is useful when te going gets a bit tougher
[07:03] <number10> +r (at this point #10 give up typing)
[07:04] <eroomde> its also very sensitive. it has a built in preamp which whrn on makes it a bit more sensitive thsn the yeasu 790 and 817
[07:05] <number10> I dont think the 817 have the filter either (need to check spec)
[07:05] <eroomde> i was using it yesterday a lot because getting the antenna up needed about 30m of coax and various connector converters at each end which all hd loss
[07:05] <eroomde> then a splitter so we could plug two radios in which cost about 4db
[07:05] <number10> was that with your W50 watson?
[07:06] <eroomde> yep
[07:06] <eroomde> props to upu
[07:06] <eroomde> its v nice
[07:07] <UpuWork> seems to do the job
[07:07] <number10> I have bought one - just not put up yet.
[07:08] <eroomde> mine was up on a bodge yesterday
[07:08] <eroomde> on a wee tripod
[07:08] <eroomde> i need to make a thing that will let me put a scaff bar onto a preexiting mast at work
[07:09] <number10> I notice with the icom that the front panel is detachable - do you thing the interconnection will be reliable over the long term?
[07:09] <eroomde> ive not heard any complaints, but i dont think it the kind of thing you detach hundreds of times a day
[07:10] <eroomde> the connector itself seems good tho - sprung gold plated contacts
[07:10] <eroomde> with the pound dollar as it is, now might not be a bad time to get one from the us
[07:11] <eroomde> thats what i did pre financial crisis
[07:11] <eroomde> was about £400 cheaper than the uk price now. no exaggeration
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[07:11] <number10> did you manage to get it without US sales tax?
[07:12] <eroomde> mustnt incriminate myself on a public channel :)
[07:12] <eroomde> i think i paid us tax yep
[07:20] <griffonbot> Received email: Anthony Stirk "Re: [UKHAS] Wombat/Joey/HF Launch Wednesday"
[07:20] <eroomde> interestingly you can get icom ic-r7000 (note the r) on ebay for <£100
[07:20] <eroomde> theyre a bit scanner
[07:20] <eroomde> with a v good reputation
[07:21] <eroomde> so the sentivity on 70cm ssb isnt as good as a non scanner but its not bad. 0.3uV for 12db sinad
[07:21] <eroomde> the icom is 0.11, yeasu 0.12
[07:21] <eroomde> so sort of 5db better
[07:21] <eroomde> but thats not a huge difference
[07:22] <eroomde> get a preamp and youd be playing competitively
[07:22] <eroomde> not that its a competition :)
[07:22] <number10> I'll take a look - cheers
[07:22] <number10> no not that its a competition but ...
[07:23] <eroomde> given your location you have the potential to be one of the most useful listeners in ukhas
[07:24] <eroomde> i am impressed by wouters yagis that were deployed yesterday
[07:24] <number10> what call sign?
[07:25] <eroomde> pa3weg
[07:25] <number10> I set up to receive at work yesterday - but left before launch - and got home just before wombat launch
[07:26] <eroomde> http://habitat.habhub.org/stats/
[07:26] <eroomde> check out flight list, wombat pie
[07:26] <eroomde> he had yagis pointing out over the sea towards cam
[07:27] <eroomde> so he got very little manmade interference
[07:28] <eroomde> and plenty of gain obviously
[07:28] <Upu> hey I did actually get 1 line from Joey
[07:28] <eroomde> :)
[07:28] <Upu> must have got that when I wasn't looking
[07:29] <eroomde> i got 132 joeys
[07:29] <eroomde> these pie charts are great
[07:29] <eroomde> really good way of getting feedback on your setup
[07:29] <UpuWork> indeed
[07:30] <UpuWork> though that frequency was hugely noisy round our end
[07:30] <eroomde> yeah
[07:30] <eroomde> shame about 650 being noisy fr people too
[07:30] <eroomde> its always been to my mind the most relisle channel
[07:30] <Upu> 434.200 is epic
[07:30] <Upu> and should be OFCOM ratified as HABBers primary usage
[07:32] <eroomde> thatll be the day
[07:32] <gonzo_> it's all centred on 434.920 by me. 650 is almost quite!
[07:32] <Upu> yeah
[07:33] <eroomde> in 5 years of hab ive never hesrd anything but our own balloons on 650
[07:34] <eroomde> but someone yesterday had an itinerant ham fishing for contacts on it
[07:35] <gonzo_> have heard people trying a 70cm repeater input, but only sporadic
[07:35] <Upu> don't think we have a 70cms repeater round our end
[07:35] <Upu> I once spoke to Rob on 70cms but thats about it
[07:36] <eroomde> weve done some flights where we coordinated chass via a 2m repeater
[07:36] <eroomde> it worked really nicely
[07:36] <UpuWork> yeah but then you get HAM's complaining at you
[07:37] <eroomde> my philosophy is that complaining about hams using a repeater to coordinate an interesting radio experiment like hab is the most legitimate use of such a system
[07:38] <UpuWork> on you're entirely correct, I love it when they start to complain our 10mW balloons are using the same frequency as their secondary usage procedure
[07:38] <eroomde> sorry that was porrly written- if hams complain about other hams actuslly doing something interesting instead of discussing heamoroid cream, they can go @&£ themselves
[07:38] <eroomde> this isnt how i put it when discussing it with them
[07:38] <UpuWork> procedure ?
[07:38] <eroomde> but it is my private view
[07:38] <UpuWork> lol
[07:38] <UpuWork> +1
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[07:40] <eroomde> there are too many pocket napoleons who view repeaters as their own fiefdom
[07:40] <eroomde> that said there are plenty of interested people in the cam repeater group
[07:41] <eroomde> who like hearing a balloon announcement on gb3py and following it
[07:41] <eroomde> often with chat on the sister 2m repeater
[07:41] <eroomde> which plays the role of #highaltirude
[07:41] <eroomde> altitiude
[07:43] <SpeedEvil> http://www.ebay.co.uk/itm/Liquid-Nitrogen-cryogenics-dewar-/130671182079?pt=UK_BOI_Medical_Lab_Equipment_Lab_Equipment_ET&hash=item1e6c9c00ff - from a seller with 555 sales???
[07:43] <SpeedEvil> Slightly minimal auction :)
[07:43] <UpuWork> that used the "cba" template
[07:44] <gonzo_> there are plenty of hams who treat any repeaters as their own property
[07:45] <eroomde> yep. its a bit annoying
[07:45] <eroomde> there just seems no desire to experiment or try new things
[07:46] <eroomde> i mean ham is a broad church and everyone has their bit that they enjoy. you dont have to be an engineer
[07:46] <gonzo_> just moan about how it wasn't how they did it in their day
[07:46] <UpuWork> I have a downer on HAM's at the moment as my local club is a bunch of whiny old men who are currently arguing over who gets a key to the "shack"
[07:46] <UpuWork> many dummies have been spat out and absolutely no full exams have been booked
[07:46] <eroomde> but the attitude towards change or someone new using 'their' repeater is very feeble
[07:46] <SpeedEvil> ISomeone remind me of the ebay auction id of canons refurb people.
[07:47] <gonzo_> be honest, it's the grumpy old man syndrome that you get in every hobby
[07:47] <SpeedEvil> That was why I was looking on ebay at the first, then I got distracted.
[07:47] <number10> UpuWork: you can take you exam at CUWS
[07:47] <UpuWork> might have too
[07:47] <number10> read the book and just book the exam
[07:48] <eroomde> thats what i did. took beginner and intermediate at once then the full a month later
[07:48] <UpuWork> after this launch going to concentrate on that and getting the antenna up
[07:48] <eroomde> they had a refreshing attitude towards getting the license :)
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[07:48] <UpuWork> yeah did the first 2 together but the club isn't going to be round much longer tbh up here
[07:48] <UpuWork> no new members
[07:48] <number10> nice day out and you get to do the exam at Caius college
[07:49] <gonzo_> yep it's a trend
[07:50] <gonzo_> we have one member who's 18 and will be off to uni soon. Then that leave me being the youngster, and over 40
[07:50] <SpeedEvil> :/
[07:50] <UpuWork> its a shame
[07:50] <UpuWork> but they don't do anything
[07:50] <gonzo_> they have a good moan! Which is what old men enjoy. Well they must, they do enough
[07:51] <UpuWork> sit drink a beer, make one contact with some one america go 5 and 9's 73's convey no useful information and go home
[07:51] <UpuWork> </rant>
[07:51] <gonzo_> ah, well I can understand the beer!
[07:51] <UpuWork> in fairness I'm ok with the beer part
[07:52] <gonzo_> we have an eme project on at ours, though not moved much on it last year
[07:52] <number10> that one of the reasons why I was not sure if I wanted to take it. Would love to do a chase on multiple balloons co-ordinated using radios
[07:52] <eroomde> i think my boss is sold on 70cm eme
[07:53] <gonzo_> it's a technical challenge. I'm not interested in operating, just building
[07:53] <eroomde> that such a project would involve an az el mounted stack of 4 long yagis phased together, and so might have other uses, is bye the bye
[07:53] <SpeedEvil> :)
[07:54] <gonzo_> hehe
[07:54] <number10> are you trying to compete with UpuWork
[07:54] <eroomde> might be
[07:55] <number10> lol
[07:55] <gonzo_> actually, my 13ele is prob as big as you need. I find that the limit is the radio horison, for a floater, or local clutter for a descending hab
[07:55] <eroomde> i agree broadly
[07:55] <eroomde> but you occassionally get wierd things
[07:55] <UpuWork> thats my other thing I need to concentrate on getting that antenna up
[07:55] <eroomde> people will start being more experimental with their digimodes
[07:56] <eroomde> a bit more gain and more concentrated beam would have been a big help yesterday forex
[07:56] <SpeedEvil> gonzo_: I guess the other half is video
[07:56] <gonzo_> I was going to do some calcs on my PIC timing and see if it was poss to generate IQ rtty
[07:57] <gonzo_> yep, I was also thinking of colour PAL TV. Though it would be limited in range.
[07:57] Action: SpeedEvil realises there is now no PAL interference.
[07:58] <SpeedEvil> Actually - no - I don't think _all_ has quite gone yet
[07:58] <SpeedEvil> http://www.digitaluk.co.uk/when_do_i_switch
[07:58] <SpeedEvil> Ireland, Tyne Tees, and around London
[07:59] <gonzo_> would be well outside the b';cast allocation anyway
[07:59] <SpeedEvil> Indeed
[08:00] <gonzo_> thinmking 2.4gig or 1.3gig (as I think there is an allocation there, not sure of the airborne status though)
[08:00] <eroomde> does anyone know where you can buy those seemingly made-for-yagis element-boom mounting plastic lugs?
[08:00] <SpeedEvil> Crystal Palace goes dark, starting a few days time.
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[08:01] <SpeedEvil> eroomde: Wander over to #geekswith3dprinters?
[08:01] <eroomde> expensive solution
[08:01] <gonzo_> I used to get them from a supplier who did rallies, but suspect he's not about anymore
[08:02] <gonzo_> you prob want grp, rather than some cnc'ed glue gun parts!
[08:03] <eroomde> cnc glue gun :)
[08:03] <gonzo_> that's all the are from what I hear
[08:03] <eroomde> that sounds like a nice way to upset them
[08:03] <SpeedEvil> In principle, you could do interesting stuff by adding fibre to the gluestick.
[08:04] <gonzo_> hehe. Well all my stuff is willed from solid. as it tends to be under stress
[08:04] <gonzo_> I used to design glue gun controlers
[08:04] <gonzo_> for commercial packaging machines
[08:04] <eroomde> yeah solid meta is another option
[08:04] <eroomde> have got tig at wlrk
[08:04] <eroomde> work
[08:05] <eroomde> metal
[08:05] <eroomde> solid meta is a meta concept in itself
[08:05] <gonzo_> willed=milled (or is that a friodean slip?!)
[08:05] Action: SpeedEvil wishes wood TIG worked.
[08:06] <gonzo_> if it's a lump of 2" thick steel slab, arguments about solid tend to be academic!
[08:06] <SpeedEvil> gonzo_: Unless you've got a plasma cutter.
[08:07] <gonzo_> been playing with oxy-propane cutting recentkly too. Christ, I never knew metalwork could be so much fun!
[08:07] <gonzo_> as snap
[08:07] <gonzo_> ah
[08:07] <SpeedEvil> For cutting some steels yeah - looks awesome.
[08:08] <gonzo_> it certainly shits up the neigbours when they come out for a smoke, just the other side of the fence
[08:08] <gonzo_> suppose I should go and lookm loike I'm doing some work. Laters
[08:09] <SpeedEvil> :)
[08:18] <number10> #join /testingchan
[08:35] <benoxley> morning
[08:36] <number10> morning
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[08:42] <natrium42> night
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[08:52] <benoxley> got some decent data now on the internal balloon pressure, just need to calibrate it
[08:53] <jonsowman> :)
[08:53] <benoxley> morning jonsowman
[08:54] <jonsowman> hi :) how's it going
[08:55] <benoxley> not too bad, although something seems slightly wrong in the results
[08:56] <jonsowman> oh, in what way?
[08:57] <benoxley> the equilibrium pressure at launch recorded an ADC value of ~389
[08:57] <benoxley> and after burst it was recording ~403
[08:57] <benoxley> I think its a temperature compensation thing
[08:58] <benoxley> but it means I need to compensate the data according to temperature
[09:00] <benoxley> could do with wombat's logs to correlate with
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[09:03] <jonsowman> benoxley: ah
[09:03] <jonsowman> well you can get wombat's temp data quite easily
[09:03] <jonsowman> :)
[09:04] <benoxley> could do with gps and time etc too
[09:04] <benoxley> I have his temp data but with no timestamp
[09:13] <griffonbot> Received email: navrac "[UKHAS] Re: UKSEDS Conference Canterbury | NTX2 | picoHAB"
[09:13] <jonsowman> yeah
[09:14] <jonsowman> habitat will have everything
[09:21] <jonsowman> managed to get Joey running on 434.020
[09:21] <jonsowman> i feel so sorry for this crystal
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[09:22] <navrac_> morning all
[09:24] <benoxley> navrac_: MORNING
[09:24] <benoxley> oops
[09:24] <benoxley> (morning)
[09:25] <benoxley> jonsowman: what are you doing to it?
[09:25] <jonsowman> benoxley: terrible things
[09:26] <jonsowman> ok it's happier on 434.000
[09:26] <benoxley> are you pulling its capacitance around all over the place?
[09:27] <jonsowman> well i was doing that anyway
[09:27] <jonsowman> but it had an 18pF fixed on the other side
[09:27] <jonsowman> it now has a 6p8 fixed on the other side
[09:28] <zyp> just don't make it stop oscillating
[09:28] <jonsowman> heh yes
[09:28] <jonsowman> i'm trying to avoid that!
[09:30] <jonsowman> it seems quite happy at 434.000
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[09:30] <number10> great - I am on the map.. thanks jonsowman
[09:30] <jonsowman> no problem :)
[09:31] <daveake> woohoo :)
[09:31] <daveake> Don't recall seeing so many payloads and cars on there :)
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[09:32] <benoxley> Need more colours for payloads...
[09:32] <jonsowman> lol
[09:33] <daveake> Add it to the payload document :)
[09:33] <benoxley> what happened to PBH by the way?
[09:33] <number10> now if Mrs10 was looking at it, she would say I quite like yellow, or maybe the opposite
[09:33] <daveake> :D
[09:33] <daveake> or "why isn't the car colour the same as our real car?"
[09:34] <number10> :)
[09:34] <navrac_> what is ANU?
[09:34] <number10> my test payload
[09:34] <navrac_> ah ok
[09:35] <daveake> I've already had "Why isn't the car on the screen pointing the right way?"
[09:35] <number10> lol
[09:35] <jonsowman> haha
[09:35] <number10> and why is the car not showing the correct speed ;)
[09:35] <daveake> <cough>
[09:38] <daveake> She knows that one :)
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[09:39] <Hix> good moaning
[09:39] <griffonbot> Received email: Jon Sowman "Re: [UKHAS] Wombat/Joey/HF Launch Wednesday"
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[09:41] <number10> daveake: true to form I have a type on one of the fields :(
[09:41] <number10> typo
[09:41] <daveake> :D
[09:41] <LazyLeopard> ;)
[09:42] <daveake> What does "ANU" mean? Please don't say you missed a letter ... :p
[09:42] <number10> no its the satelites
[09:42] <daveake> Yes I know :)
[09:43] <navrac_> I thought $$ANU was some sort of anagram
[09:44] <number10> twell we were running out of egyption and greek gods so I wanted something short - sumerian god
[09:44] <jonsowman> number10: fixed
[09:44] <number10> cheers jonsowman
[09:44] <Darkside> haha number10
[09:44] <Darkside> we have bagsies on Horus, Nut and Osiris
[09:44] <number10> Darkside: you even use them for each PCBs there will be no more gods left soon
[09:45] <Darkside> :P
[09:45] <Darkside> i just start adding SI prefixes
[09:46] <navrac_> has isis been grabbed yet? that was the name of my first intel development system
[09:47] <Darkside> haha
[09:47] <Darkside> not sure
[09:47] <Darkside> oh man, altium designer does auto via stitching now
[09:51] <griffonbot> Received email: Henry Hallam "Re: [UKHAS] Wombat/Joey/HF Launch Wednesday"
[09:52] <benoxley> excel is slowly dying trying to graph 15000 data points
[09:52] <jonsowman> haha
[09:53] <benoxley> might ask it to try and plot a 3d graph with it, just to see what happens :P
[09:55] <jonsowman> :D
[09:55] <jonsowman> sad things, i imagine
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[09:58] <navrac_> just found theres an isis-II simulator available - I can go back to 1977 - now all I need is a version of colossal cave for it and I can be a teenager again
[09:59] <benoxley> got to go for a bit
[09:59] <jonsowman> ttyl
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[10:14] <daveake_> You are in a twisty maze of passageways, all alike
[10:14] <Darkside> suddenly, the lights go off
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[10:16] <x-f> not needed, enjoy the night sky
[10:16] <Darkside> aww
[10:16] <Darkside> i was going to mention something about grue's
[10:16] <Darkside> grues*
[10:16] <Darkside> and how you have been eaten by one
[10:17] <eroomde> back
[10:17] <eroomde> headwind cycling into work. tired and grumpy
[10:18] <x-f> eroomde, yeah, but imagine your speed on the way back
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[10:21] <navrac_> paging upuwork
[10:21] <UpuWork> hello
[10:22] <griffonbot> Received email: Rick Hewett "[UKHAS] Re: Wombat/Joey/HF Launch Wednesday"
[10:22] <navrac_> just to say postie just arrived - thanks for all the bits
[10:23] <UpuWork> welcome
[10:23] <navrac_> and how did you seal the anti static bag - and can you make me a bag about 1.8m round please
[10:24] <daveake_> :)
[10:24] <UpuWork> lol
[10:24] <UpuWork> scotch tape :)
[10:24] <eroomde> i like alan F6AGV
[10:24] <eroomde> he is A Good Thing
[10:24] <eroomde> x-f: i think i'll get a lift
[10:25] <eroomde> probs gonna stay till about 8pm this evening and i won't fancy a >1hr cycle after that
[10:25] <UpuWork> I love his blog
[10:26] <UpuWork> Read it every day I love the way Google always translates Balloons as balls makes it more fun to read
[10:26] <UpuWork> Skys of Cambridge are full of balls
[10:26] NickB1 (c24e2462@gateway/web/freenode/ip.194.78.36.98) joined #highaltitude.
[10:26] <daveake_> Dave's balls are the highest in the world
[10:26] <daveake_> Well I can hope ...
[10:26] <UpuWork> lol
[10:27] <navrac_> that pcb you chucked in - is it a 3v3 or 5v ncp?
[10:27] <Darkside> UpuWork: giant orbs?
[10:27] <Darkside> big beautiful bouncing orbs
[10:27] <daveake_> page counter in hex. Style.
[10:28] <eroomde> GREEN ball named "Joey" is asked!
[10:29] <number10> just popped out to tesco - and there is a queue backing up from the ptrol station - now blocking the road enterance to the supermarket - dont panic!
[10:29] <eroomde> ah poo to all that
[10:29] <eroomde> actually i should think about it i suppose
[10:29] <gonzo_> as bad here
[10:29] <eroomde> need to get to sussex this w/e
[10:29] <navrac_> no petrol available for 20 miles round here
[10:29] <UpuWork> people are just sheep
[10:29] <number10> bit far for the push bike eroomde
[10:29] <daveake_> hmmm guess I should join the panic then
[10:29] <gonzo_> I went out to fill up, my usual monthly fill, last night
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[10:30] <navrac_> upuwork - was that a 3v3 or 5v ncp on the board?
[10:30] <UpuWork> 3v3
[10:30] <gonzo_> one gge was closed as the tanker was there, an hour later when I went past again, the queues were 1/4 mile down the road.
[10:30] <eroomde> ok so
[10:30] <eroomde> http://alerte-radiosondes.blogspot.fr/2012/03/ballons-du-28-mars-2012-de-cambridge.html
[10:30] <eroomde> astra 1 screenshots
[10:30] <eroomde> what's going on here
[10:31] <UpuWork> if you solder on where the GPS power is
[10:31] <eroomde> it looks like the experimental radio, whatever it was, isn't supressing the carrier maybe?
[10:31] <eroomde> or something
[10:31] <eroomde> there's that central energy band anyway
[10:32] <jonsowman> eroomde: astra 1 was an NTX2
[10:32] <eroomde> ah interesting
[10:32] <eroomde> so
[10:32] <eroomde> i'm going to see if i can recreate this
[10:32] <jonsowman> astra 2 was the HF transmitter
[10:33] <jonsowman> we picked up about 10 packets from the HF transmitter using the 2m/70cm whip in the chase car
[10:33] <eroomde> yeah i can believe it
[10:33] <jonsowman> but not very decodable really
[10:33] <gonzo_> that central band looks like it's the 300bd keying sidebands
[10:33] <eroomde> in college i just threw and arbitrary length of wire out of the window on a plumb line and could get cw from arizona quite nicely
[10:33] <Darkside> we had trouble with my 40m payload, even with proper HF whips
[10:33] <jonsowman> shame Joey got so squashed by QRM for everyone
[10:34] <jonsowman> we decoded it fine in the car, but no mobile internet so couldn't upload
[10:34] <UpuWork> I recieved 95% of every packet on Joey
[10:34] <UpuWork> but only got 1 decode
[10:34] <jonsowman> yeah
[10:34] <eroomde> once i turned my AGC speed to fastest i got a lot more joey
[10:34] <jonsowman> 433.975 is obviously too far into "general use" territory
[10:34] <eroomde> it could recover from the arm bursts
[10:35] <jonsowman> i've been fiddling with it this morning and it's now on 434.000
[10:35] <eroomde> s/arm/qrm
[10:35] <UpuWork> the 14.3Mhz crystals are on network cards btw but yeah a bit high for your use
[10:35] <jonsowman> UpuWork: yeah, this radio has a fixed x32 PLL
[10:35] <jonsowman> that would be like 457MHz
[10:35] <jonsowman> 13.57MHz xtal would be perfct
[10:36] <UpuWork> old motherboards seem to have alot of 25Mhz crystals
[10:36] <UpuWork> Would that variable oscillator work someone posted ?
[10:37] <jonsowman> yeah i'm looking at that
[10:37] <UpuWork> you could hack one of those on to an NTX2
[10:37] <eroomde> mmm there are also fractional-n diviers
[10:37] <eroomde> so you could generate something above 70cm but cut it down to size with quite a lot of accuracy
[10:37] <jonsowman> this radio is /so/ simple which is a lot of its current attraction
[10:37] <eroomde> agreed
[10:37] <eroomde> on the attractiveness
[10:38] <jonsowman> reckon 434.000 would be alright QRM wise?
[10:38] <jonsowman> it drifts up with falling temperature
[10:39] <UpuWork> that end isn't great
[10:39] <UpuWork> 434.200 is dead quiet for me
[10:39] <jonsowman> hmm ok
[10:39] <jonsowman> there's no way i get that by crystal pulling
[10:40] <jonsowman> on this current hardware i mean
[10:40] <jonsowman> getting 434.000 was pushing it
[10:41] <eroomde> on the rsgb bandplan: 433.9500-434.0500 MHz 25 kHz Internet voice gateway channels
[10:41] <eroomde> dunno how active that is though
[10:41] <jonsowman> ah
[10:41] <eroomde> i'll have a listen later
[10:41] <jonsowman> that's bad
[10:41] <UpuWork> those variable oscillators aren't that expensive
[10:41] <eroomde> well, all parts of the bandplan have something in them
[10:41] <eroomde> but the questiuon is really how much they're used for that
[10:41] <jonsowman> yeah
[10:42] <eroomde> 650 is a repeater input freq in theory but it's as quiet as anything usually
[10:42] <jonsowman> yeah even 075 doesn't seem to be an issue normally
[10:43] <jonsowman> i wonder where it starts getting 'bad'
[10:43] <eroomde> oh i've found .075 to be bad
[10:43] <UpuWork> 075 round me is a poppin' and a clickin' fantastic mate
[10:43] <jonsowman> haha
[10:43] <jonsowman> okay
[10:43] <eroomde> there's all sorts of low power infrastructure wireless devices around there
[10:43] <gonzo_> I have a feeling that pulling xtans will have a big impact on their tempco
[10:43] <jonsowman> well if i use one of the variable oscs then I can just put it at the upper end of 434
[10:43] <UpuWork> and its quite telling that people seem to buy the 650 NTX2 and not the 075
[10:44] <eroomde> yep
[10:44] <jonsowman> gonzo_: well it wasn't too bad yesterday, at least better than i was expecting
[10:44] <jonsowman> and that was pulled to 433.975 from 433.920
[10:44] <jonsowman> UpuWork: interesting
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[10:49] <eroomde> does anyone know which of the many (free) yagi design software tools is any good? I want to see if the parts bin at work can be put to use
[10:50] <eroomde> mine's been a real boon
[10:50] <jonsowman> yeah it's excellent
[10:50] <jonsowman> can start getting this sodding temp sensor working now
[10:50] <Darkside> uuurgh
[10:50] <Darkside> preparing for a rf tutorial tomorrow
[10:51] <Darkside> (i'm the tutor)
[10:51] <eroomde> you put a wobbly voltage in
[10:51] <eroomde> you get a wobbly voltage out
[10:51] <Darkside> hah
[10:51] <eroomde> here is maxwell
[10:51] <eroomde> ok bye now
[10:51] <eroomde> simplicity itself
[10:51] <Darkside> yep
[10:52] <Darkside> the students get to derive an expression for IIP3
[10:52] <Darkside> that's a whole load of fun
[10:52] <BrainDamage> make sure they are supplied by a lot of paper
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[10:52] <BrainDamage> I remember the loooon trigonometry eq
[10:53] <gonzo_> I use this:
[10:53] <gonzo_> http://www.google.co.uk/url?sa=t&rct=j&q=dl6wu%20online&source=web&cd=1&ved=0CCQQFjAA&url=http%3A%2F%2Fwww.k7mem.150m.com%2FElectronic_Notebook%2Fantennas%2Fyagi_vhf.html&ei=Cz90T--kH5LU4QT-q6XkDQ&usg=AFQjCNEsHPxS8fiKs00kH7aCdgnPBF7atQ&cad=rja
[10:53] <Darkside> BrainDamage: yeah
[10:53] <Darkside> its pretty mean
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[10:54] <Darkside> i'm not going to be deriving it on teh whiteboard :P
[10:54] <Darkside> i'll be going through what the diffrerent intermode products are
[10:54] <Darkside> and explaining why IIP3 is important
[10:54] <gonzo_> http://www.k7mem.150m.com/Electronic_Notebook/antennas/yagi_vhf.html
[10:54] <gonzo_> neater
[10:54] <BrainDamage> I guess you'll cover, 2 tone test, 1dB compression point
[10:54] <BrainDamage> NF
[10:54] <Darkside> yup
[10:54] <Darkside> exactly that
[10:55] <Darkside> we look at how noise figures are lumped together
[10:55] <Darkside> and i'm going to give a kind of real-world example of IIP3 problems
[10:55] <Darkside> 2xlocalAMstation + 3xotherlocalAMstation = right in the middle of the 80m band
[10:56] <Darkside> so when you drive past the broadcast site, you hear am radio in your HF reciever :P
[10:56] <Darkside> if it's tuned to the right place, and has a shit frontend
[11:00] <eroomde> oh Darkside speaking of 2-tone test
[11:00] <eroomde> if you have the kit, demo it
[11:00] <Darkside> i have the kit
[11:00] <eroomde> have a look at thesignalpath.com blog
[11:00] <Darkside> but i can't bring it into the tute room
[11:00] <eroomde> their content is absolutely first class
[11:01] <Darkside> i was measuring the IIP3 of a SDR i've been working on
[11:01] <eroomde> and in one of the vids he demos this with a siggen and spec-an
[11:01] <Darkside> yeah im looking at it now
[11:01] <Darkside> problem is, i can't bring all that kit into the tutorial room
[11:02] <eroomde> http://thesignalpath.com/blogs/2011/10/17/tutorial-on-linear-and-non-linear-circuits/
[11:02] <eroomde> send them that vid to watch to complement your material
[11:02] <eroomde> he starts pretty much from first priciples and the balance of theory and demo is excellent, especially if used in conjuntion with your theoretical derivation
[11:03] <Darkside> oh god, dat spec-an
[11:03] <Darkside> we have 2 of those in the lab
[11:03] <Darkside> also the same oscilloscopes too
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[11:10] <Darkside> also i think i'll force the students to do some calculations in the class :P
[11:10] <Darkside> i'll get them to design a low-pass filter, one that they're going to have to use in a practical later in the semester anyway
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[11:19] Nick change: xfire|gullet -> xfireguru
[11:28] <griffonbot> Received email: "Re: [UKHAS] Re: Wombat/Joey/HF Launch Wednesday"
[11:37] <Laurenceb> http://i.imgur.com/dM5ed.png
[11:38] <jonsowman> so
[11:38] <jonsowman> true
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[11:43] <daveake_> Linux on 8-bit - "The effective emulated CPU speed is about 6.5KHz"
[11:45] <fsphil> and that's overclocked
[11:46] <daveake_> About the same clock speed as Colossus
[11:47] M0NSA (~HeliosFA@2a01:348:117::666) joined #highaltitude.
[11:47] <daveake_> Perhaps his next job is to emulate that
[11:47] <SpeedEvil> daveake_: Numbers don't work
[11:47] <SpeedEvil> daveake_: Compute speed to boot on a modern PC
[11:47] <SpeedEvil> divide
[11:47] <SpeedEvil> _way_ too fast
[11:48] <SpeedEvil> (for 6.5KHz)
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[11:53] <NigelMoby> lol @ linus's reply
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[11:56] MoALTz_ (~no@host-92-8-224-146.as43234.net) joined #highaltitude.
[11:56] <pjm__> is there anything flying today?
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[11:59] <NigelMoby> nope
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[12:02] <kokey> some things are flying
[12:02] <kokey> but not amateur balloons
[12:02] <kokey> but there's always an AIS receiver and/or flightradar24.com if you want to watch things going through the sky
[12:05] <SamSilver> stand by for breaking news!
[12:06] <SamSilver> http://www.youtube.com/watch?v=Vi3foUL_OLI
[12:07] <fsphil> or a met sonde
[12:08] <UpuWork> the epic meal time music makes it better
[12:08] <UpuWork> MOAR balloons
[12:08] <SamSilver> true
[12:08] <SamSilver> afk
[12:09] <UpuWork> disliked just because it was a) crap b) asking for money
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[12:15] <pjm__> lol board of met sondes, running a adsb-rx here with input to planefinder, and ais - well not brilliant
[12:23] <griffonbot> Received email: Dave "Re: [UKHAS] Re: Wombat/Joey/HF Launch Wednesday"
[12:31] <eroomde> we had a ufo report in cambridge once
[12:31] <eroomde> one of ours
[12:31] <eroomde> amusing though how people will describe something as somethign else entirely
[12:32] <eroomde> the description was completely incorrect from some bloke in the maths department who saw it and emailed it to the maths list as a ufo
[12:32] <eroomde> something like 'it hovered silent for a few seconds before rocketing up intoi the cloud base at tremendous velocity'
[12:32] <NigelMoby> haha woopsie
[12:32] <eroomde> when infact it was just doing 4m/s the whole time
[12:33] <NigelMoby> I bet he felt a right plank.
[12:33] <gonzo_> memory and interpretation is highly unreliable
[12:34] <gonzo_> There was a program on R4 about that, relating to eye witness evidence
[12:35] <SpeedEvil> eroomde: Did you show him the tracking data?
[12:35] <NigelMoby> all down to how our brain interprets things I guess.
[12:37] <SpeedEvil> Our brains suck at interpreting things that aren't on the horizon, and moving at 'normal' speeds.
[12:37] <NigelMoby> yup, very hard to determine speed and size of far away objects.
[12:37] <eroomde> never showed him the tracking data no
[12:37] <gonzo_> the researcher himself was identified as been involved in an attack on a woman in her home. His alibi was he was on TV at the time. And turned out she had been watching the program at the time. Nut in the stress of the momnet, the memories got mixed up.
[12:38] <eroomde> but it was definitley our balloon just on a slightly grim overcast launch day
[12:38] <eroomde> could see my payload and everything
[12:38] <gonzo_> ah yes, the big moon problem
[12:39] <jonsowman> matt found these
[12:39] <jonsowman> http://uk.mouser.com/ProductDetail/TXC-Corporation/AX-13580625MAGV-T/?qs=eG6pLP9P%2feQ%2fxV4nP5m9WuFFaVKz%2fPsfSt08Pzihewc%3d
[12:39] <jonsowman> perfect for joey
[12:40] <jonsowman> 434.56 ish, will be able to pull it up to around 434.60
[12:40] <jonsowman> :)
[12:40] <eroomde> oh nice
[12:40] <eroomde> good spot
[12:40] <jonsowman> shame they're not in stick atm
[12:40] <jonsowman> *stock
[12:40] <eroomde> tried digikey?
[12:40] <eroomde> assuming farnell and rs draw a blank
[12:40] <jonsowman> had a good look this morning but didn't find anything
[12:41] <jonsowman> rapid had a 13.58 SMD one but "no longer manufactured"
[12:42] <eroomde> boo
[12:42] <jonsowman> nothing on farnell
[12:42] <eroomde> def farnell and not just onecall? (sorry if that's insulting your intelligence)
[12:43] <jonsowman> yep
[12:43] <jonsowman> i'll have a better look around later
[12:43] <daveake_> LCD not entirely integrated yet :-), but you can see how this will go ... http://imgur.com/a/yC8CD
[12:43] <jonsowman> http://uk.mouser.com/ProductDetail/Crystek-Corporation/017304/?qs=VbHzlErGQr4HULrQ%2fyfl1TOhJ049n2XoTFExty7oovM%3d
[12:43] <jonsowman> these are in stock
[12:44] <jonsowman> but that's only about 434.1
[12:44] <jonsowman> i recognise that center console daveake_ ;)
[12:44] <eroomde> might be alright
[12:44] <eroomde> nice daveake_
[12:44] <UpuWork> 13.56 ?
[12:44] <daveake_> jonsowman Good, I made need a spare ;)
[12:45] <daveake_> may
[12:45] <jonsowman> 13.567
[12:45] <jonsowman> UpuWork: so gives about 434.140 RF
[12:45] <UpuWork> Abracon do a 13.560
[12:45] <jonsowman> i've got 13.560 on there at the moment
[12:45] <UpuWork> k
[12:45] <jonsowman> which is 433.92
[12:45] <jonsowman> 13.58 is basically what i want
[12:45] <jonsowman> i just can't find any in stock
[12:46] <jonsowman> daveake_: haha you're not having mine
[12:46] <UpuWork> no next one up is 13.824
[12:46] <jonsowman> from Abracon?
[12:47] <UpuWork> y
[12:47] <daveake_> jonsowman Should be fine so long as I don't slip with a hacksaw or something :-). Anyway plenty of spares on ebay
[12:47] <jonsowman> daveake_: haha :)
[12:47] <daveake_> afk to give this a test and fill up with enough petrol for Saturday's chase
[12:48] <jonsowman> UpuWork: yeah, they're hard to find
[12:48] <jonsowman> there are those mouser ones will will come back in stock eventually i hope
[12:48] <UpuWork> you can get them custom made
[12:48] <UpuWork> but you know the implications of that
[12:49] <jonsowman> yeah indeed
[12:49] <griffonbot> Received email: Neil Baker "Re: [UKHAS] Re: Wombat/Joey/HF Launch Wednesday"
[12:49] <UpuWork> what you need is someone who does them with a tolerance of 5% and buy a bunch :)
[12:49] <jonsowman> haha
[12:50] <jonsowman> crap tolerance and great temperature stability
[12:50] <UpuWork> yeah lol
[12:50] <eroomde> jonsowman: certainly with RS< the lead times are often pulled out of someone's bum
[12:50] <jonsowman> haha
[12:51] <eroomde> and giving a rep a call often yeilds a much better answer
[12:51] <UpuWork> they just make them up tbh
[12:51] <eroomde> so might be the same with ourser
[12:51] <jonsowman> ok, thanks
[12:51] <UpuWork> I bought the last load of Sarantel antennas
[12:51] <eroomde> mouser*
[12:51] <UpuWork> they still owe me 3
[12:51] <eroomde> random asside that might or might not be interesting
[12:51] <eroomde> picavet suspension, used for stability by kite aerial photographers
[12:51] <eroomde> http://arch.ced.berkeley.edu/kap/equip/picavet.html
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[13:20] <eroomde> kokey: nice tidbit for Hawksmoor retsaurant we were talking about a bit back
[13:20] <eroomde> on mondays they have a £5 corckage policy
[13:20] <eroomde> which is awesome
[13:26] <daveake_> Back. Compass heading thingy worked nicely :-). And only a 5-car queue at the petrol station
[13:26] <eroomde> eek
[13:27] <daveake_> That was when I got there. About 12 cars when I left
[13:27] <eroomde> 12 cars total or per pump?
[13:27] <daveake_> total
[13:28] <daveake_> Loacal Sainsbury's (closest cheapish (relatively) petrol). They have 18 pumps
[13:28] <daveake_> Waited about 5 mins
[13:29] <kokey> eroomde: oh that's nice, thanks
[13:30] <eroomde> makes you want to cry having to spend [or rather, not spend] £120 for a £30 bottle of burgundy
[13:30] <eroomde> so this is pretty amazing
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[13:56] <kokey> yeah that's very handy
[13:56] <eroomde> jonsowman: what freq do you want me to do a random sample on?
[13:57] <eroomde> i'm about to go out to where the radio is and can sample the arm or lack of
[13:57] <eroomde> qrm*
[13:57] <jonsowman> 434.000 and 434.100 ish please :)
[13:57] <eroomde> okey
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[14:03] <ael> jonsowman: 434.000 very noisy
[14:03] <ael> lots of R2D2s
[14:04] <jonsowman> haha
[14:04] <jonsowman> okay
[14:04] <ael> 434.100 better so far
[14:04] <jonsowman> so the higher away from 434 the better it seems?
[14:05] <ael> though i'm getting s5 pulses about once every 5s
[14:05] <jonsowman> on 434.1?
[14:05] <ael> yes
[14:05] <jonsowman> hmm interesting
[14:05] <ael> 434.000 barren so far (about 30s)
[14:06] <ael> sorry, that should be 434.200
[14:06] <jonsowman> so one of the crystals will give me about 434.15
[14:06] <jonsowman> would you mind checking that quickly please? :)
[14:07] <ael> nada so far
[14:07] <jonsowman> well that's promising...
[14:07] <ael> still nothing
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[14:09] <ael> yep nice and quiet in this location
[14:09] <jonsowman> great, thank you
[14:09] <jonsowman> i might away with that 13.57 xtal then
[14:09] <Matt_soton> what frequencies did you want to check jonsowman ?
[14:09] <jonsowman> Matt_soton: 434.000, 434.1, 434.15 please :)
[14:09] <Matt_soton> if you skype astra.hab you can hear for yourself
[14:09] <jonsowman> lol ok
[14:10] <jonsowman> sent req
[14:10] <kokey> QRbzzzt
[14:12] <Matt_soton> thats 000 jonsowman
[14:12] <jonsowman> cant hear anything
[14:12] <jonsowman> got it
[14:12] <jonsowman> ta
[14:12] <jonsowman> that's horrible
[14:12] <jonsowman> why so noisy :(
[14:12] <jonsowman> and a duck?
[14:13] <Matt_soton> yea its around 2500 on the waterfall
[14:13] <jonsowman> that's very bad actually
[14:13] <jonsowman> i can see why people had trouble with Joey yday
[14:13] <Matt_soton> now 010
[14:13] <jonsowman> *100 please
[14:14] <Matt_soton> done
[14:14] <jonsowman> that's nice and quiet
[14:14] <jonsowman> 150?
[14:14] <Matt_soton> done
[14:14] <jonsowman> also very quiet
[14:14] <jonsowman> thanks :)
[14:15] <Matt_soton> bearing in mind 075 is flown alot 100 should be fine
[14:15] <Matt_soton> ill goto 075
[14:15] <jonsowman> well it seems like the 13.567187 xtal might be fine
[14:15] <Matt_soton> oops
[14:15] <Matt_soton> .92
[14:15] <jonsowman> i'm off skype now
[14:15] <Matt_soton> well .92 is bad
[14:15] <jonsowman> sister getting annoyed at me as she's trying to watch TV
[14:15] <jonsowman> i imagined .92 would be pretty awful
[14:15] <Matt_soton> heh
[14:15] <Matt_soton> anwyay back to satillte mode
[14:16] <jonsowman> ta :)
[14:16] <ael> right heading back
[14:17] <jonsowman> thank you
[14:17] <Matt_soton> np :)
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[14:18] <OZ1SKY_Brian> hi
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[14:21] <Upu> afternoon Brian
[14:23] <daveake_> ping navrac / navrac_
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[14:35] <eroomde> from something i was just reading
[14:35] <eroomde> 'Any person with a small degree of knowledge can do some serious amount of damage if they wanted to turn rouge.'
[14:36] <eroomde> i think they mean rogue
[14:36] <eroomde> but an amusing image :)
[14:36] <SamSilver> watch out for a slap from a powder-puff
[14:38] <daveake_> Or being clubbed round the head if you visit Baton Rouge
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[14:47] <navrac_> hi daveake
[14:47] <navrac_> or daveake_ even
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[14:47] <daveake_> Afternoon :). FCD arrived.
[14:47] <navrac_> lol
[14:48] <navrac_> you are worse than me!
[14:48] <navrac_> have you set it up yet?
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[14:51] Nick change: daveake__ -> daveake
[14:52] <daveake> hmf silly internet
[14:52] <navrac_> daveake - joing the funcube google group asap
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[14:52] <daveake> will do
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[14:52] <navrac_> its 100% easier if you follow the instructions that are in the files section
[14:54] <navrac_> Initial setup of the FUNcube Dongle - 20110604.pdf
[14:54] <daveake> ta
[14:54] <navrac_> http://f1.grp.yahoofs.com/v1/4Gp0TzzQ6uY0YOvdAYEh8XhbrwXLU3I37D0nHGCgCdk7VcSpq7kNCdsQPBlbNuQHHN_lcPnTus4kzQ6WgyblhP2_UP8VBy1Fzr03oA9TBYLx7f5cMxY/User%20Guides/Using%20HDSDR%20with%20FCD.pdf
[14:55] <navrac_> odd - the first copy gave the filename the second file came out as the url
[14:55] <navrac_> http://f1.grp.yahoofs.com/v1/4Gp0T4_qxT00YOvdGwBIwYdhupymnV6iflX5aTQoMgg7PAnwt_tAcD-rliYPdzD-Szb8LoxT-jDSYoJjj4qV89Vixe4zPTAbBXZgb7kaRDnUptq6Fyw/User%20Guides/Initial%20setup%20of%20the%20FUNcube%20Dongle%20-%2020110604.pdf
[14:55] <daveake> Ah Yahoo group not Google ... explains why I couldn't find it :)
[14:56] <navrac_> the second link is the best to start with, then the second
[14:56] <navrac_> then the first - oh dear - beains fried
[14:56] <daveake> :D
[14:56] <navrac_> brain even
[14:57] <fsphil> and I thought I was having a bad day :)
[14:57] <navrac_> ive already blown up one rfm22b today
[14:58] <fsphil> eek
[15:00] <kokey> sucks
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[15:12] <navrac_> well i dug out a faulty one from the box and it had repaired itself
[15:13] <navrac_> I dont think the one that blew was happy with the psu going from 1.8v to 5v and back again every few seconds
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[15:53] <choppyhorse> Hello everyone. My question today is about insurance, against the tiny chance of my balloon destroying something. Anyone buy it? Where do I buy it?
[16:01] <fsphil> nobody will sell it to you, not without lots of £, $ or ¬
[16:04] <choppyhorse> do people usually get it then?
[16:04] <choppyhorse> or go without?
[16:04] <BrainDamage> fsphil: you need lot of cash glyphs?
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[16:07] <nigelvh> fsphil needs a crapton of cash glyphs
[16:08] <nigelvh> Unfortunately my keyboard doesn't have the pound or euro glyphs, so I'm stuck with passing along a few of these. $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
[16:12] <navrac_> best afvice is to get a disposable mobile phone number and an anonymous email address to write on the payload. If anyone contacts you if they find the payload - then as a simple rule if they are shouting , burn the simcard....
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[16:13] <BrainDamage> or build an homing payload with explosives
[16:13] <nigelvh> OR, put big (fake) government logos all over the box.
[16:13] <mfa298> My experience of looking at public liability insurance is it's very hard to get it for hobbyist type things. You tend to need to be a business to get it.
[16:13] <navrac_> but seriously just do the predictions and avoid built up areas/airports/military areas - if it isnt safe dont fly - theres about 0% chance of hitting something if the payload goes to the countryside
[16:13] <choppyhorse> or put a bomb in it I can remotely detonate to destroy all evidence
[16:14] <navrac_> apart from powerlines - balloons like powerlines
[16:14] <nigelvh> Or power substations
[16:14] <choppyhorse> how about trees. I might need to bring some climbing gear.
[16:14] <BrainDamage> why do you need insurance? it's not like a payload ever done damage to a power grid, ohwait
[16:14] <nigelvh> We had one try really hard to land in one
[16:14] <navrac_> exactly...
[16:14] <nigelvh> Landed about 15 feet outside the fence.
[16:15] <navrac_> well thy tend to destroy themselves in that case - so no biggy
[16:15] <nigelvh> Except when you want the payload back...
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[16:17] <navrac_> hence the disposable sim - in a disposable non traceable phone
[16:19] <navrac_> there are a few trees around with payloads gently waving around in them
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[16:22] <Randomskk> https://vimeo.com/39417028
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[16:29] <navrac_> not the most frightening looking trex
[16:29] <Randomskk> he is mostly spherical
[16:30] <nigelvh> Randomskk TREX LOOKS AWESOME IN SPACE!
[16:30] <Randomskk> :D
[16:30] <jonsowman> :)
[16:30] <nigelvh> I heart trex
[16:30] <navrac_> he looks like he was screaming for the entire flight
[16:30] <nigelvh> T-Rex always screams
[16:30] <jonsowman> i would be too
[16:30] <nigelvh> Most of the time in joy
[16:31] <nigelvh> Gasping in suprise is common too.
[16:32] <eroomde> what i want for hab is a quad bike and a couple of trailers
[16:32] <eroomde> one trailer for kit, one for helium
[16:32] <eroomde> and then vertically mounted to the back of the quad bike a long bar of scaff, say 3m
[16:33] <eroomde> with a grabby arm/hook at the end
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[16:33] <SpeedEvil> eroomde: you could store the helium in a large blimp.
[16:33] <kokey> I always said balloons are overkill as a mechanism to hang payloads in trees
[16:33] <eroomde> to the grabby arm hook you attach the payload at the point it attaches to the balloon line
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[16:33] <kokey> and having to lift them 30km first is certainly not necessary
[16:34] <eroomde> so then you release the balloon into the wind first, and it wont go anywhere as it's moored to this payload arm
[16:34] <eroomde> then in the quad you set off at the wind vecotr until you are right underneath the balloon and hit a big detach button
[16:34] <kokey> ok, home time
[16:34] <eroomde> i have had a better idea in the last 20 seconds
[16:34] <eroomde> a catapult
[16:35] <eroomde> you attach the payload to a catapult
[16:35] <eroomde> that moors the balloon to the ground
[16:35] <eroomde> when you are ready to launch, you fire the catapult such that the payload gets lobbed on a massive arc up into the air
[16:35] <eroomde> then it'll just swing down to underneath the balloon
[16:35] <eroomde> megalaunch
[16:36] <SpeedEvil> Just upgrade the catapult a bit, so it can hit 40km without the balloon.
[16:36] <jcoxon> afternoon
[16:36] <kokey> I think one should get some motorcyclists involved with recovery
[16:36] <jcoxon> shall i clear the tracker?
[16:36] <kokey> with radios, and people to guide them over the radio
[16:37] <SpeedEvil> kokey: And a motorcycle pyramid - so that you can get it in the air
[16:37] <kokey> perhaps launch the payload with a rocket
[16:37] <kokey> I think that's a clever idea, I should patent it
[16:39] <kokey> ok, home time, for real this time
[16:39] <eroomde> a supercat 6x6
[16:39] <eroomde> that'd be the ultimate hab ground launch accessory
[16:40] <daveake> jcoxon fine by ,e
[16:40] <daveake> me
[16:41] <jonsowman> also fine with me
[16:44] <navrac_> jcoxon - just sent you an email
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[16:45] <eroomde> DON'T CLEAR IT
[16:45] <eroomde> poor nexus is still up there
[16:45] <eroomde> if you delete it before it bursts and comes back down, it'll die
[16:46] <jcoxon> i can leave nexus
[16:46] <jonsowman> lol
[16:46] <jonsowman> you can delete it jcoxon
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[16:58] Nick change: upiax -> upix
[16:58] <upix> helo
[16:59] <eroomde> hello
[17:01] <Upu> lol
[17:01] <Upu> I detected some eroomde sillyness
[17:04] <eroomde> what? where?
[17:05] <eroomde> who ya been talkin to?
[17:09] <Upu> the voices in my head
[17:11] Action: fsphil hides the radio transmitter
[17:13] <eroomde> i still love the idea that some people's dental crowns will pick up radio 4 longwave
[17:13] <navrac_> could be worse could be kiss fm
[17:13] <daveake> You going to get one tuned for 434MHz?
[17:14] <navrac_> but its climbing the mast everytime a payload goes up that puts me off
[17:14] <fsphil> think of the view
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[17:15] <navrac_> right got to go wifely chores call
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[17:16] <daveake> Well, Funcube dongle running sweetly thanks mainly to that man ^^ who just left to do "chores"
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[17:27] <fsphil> they've very nifty gizmos
[17:27] <fsphil> they're *
[17:27] <daveake> yep
[17:27] <daveake> Lots of things to twiddle
[17:28] <daveake> I like it that you can see a wide spectrum at once - makes it much quicker to find a payload
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[17:30] <fsphil> very
[17:30] <fsphil> also handy for testing ntx2 with different resistors
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[17:31] <daveake> Plus of course HDSDR adds to the full mission control experience :)
[17:38] <griffonbot> Received email: Dave "Re: [UKHAS] Re: Wombat/Joey/HF Launch Wednesday"
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[17:39] <eroomde> http://www.ebay.co.uk/itm/Magicard-Rio-colour-ID-card-printer-/270937728161?pt=UK_CamerasPhoto_Printers_Printers_JN&hash=item3f1525a4a1
[17:39] <eroomde> read the description
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[17:43] <daveake> Wonderful!
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[17:58] <griffonbot> Received email: Dave "Re: [UKHAS] Wombat/Joey/HF Launch Wednesday"
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[18:12] <griffonbot> Received email: Dave "Re: [UKHAS] Re: Wombat/Joey/HF Launch Wednesday"
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[19:37] <eroomde> so... what's happening?
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[19:40] Action: Laurenceb_ is trying to work out if you can build a macroscale version of the cmos camera pixel circuit
[19:40] <Laurenceb_> using discrete semi
[19:41] <fsphil> nice
[19:41] Action: fsphil isn't doing that
[19:43] <Lunar_Lander> phew
[19:43] <Lunar_Lander> someone wasn't paying attention when creating the arduino uno driver
[19:43] <Lunar_Lander> they left the description line as "Communications Port"
[19:46] <eroomde> as opposed to what
[19:46] <eroomde> HID?
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[19:48] <Lunar_Lander> "Arduino Uno"
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[19:52] <gonzo_> eve, anyone have any example GPGGA strings from a ublock?
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[20:01] <gonzo_> ah, answered my own question
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[20:10] <fsphil> hehe, from dirk gently ... "When a man loses sight of his carpet, he is no longer a man". *looks around his rom*
[20:10] <fsphil> room*
[20:11] <Lunar_Lander> XD
[20:13] <LazyLeopard> Erf. Another episode missed...
[20:14] <nigelvh> "any man who can hitch the length and breadth of the galaxy, rough it, slum it, struggle against terrible odds, win through, and still knows where his towel is, is clearly a man to be reckoned with."
[20:14] <LazyLeopard> Has the fridge made an appearance yet? What about the Chesterfield sofa?
[20:19] <daveake> Eddie's in the continuum
[20:19] <fsphil> lol
[20:19] <fsphil> love that bit
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[20:20] <domlin> evening all
[20:20] <jonsowman> hi
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[20:22] <domlin> how did the launches and things go the other day? :)
[20:22] <Randomskk> both recovered :D
[20:22] <Randomskk> timelapse video from one launch: https://vimeo.com/39417028
[20:22] <domlin> oo fantastic ill have a looksie
[20:23] <daveake> Could have been closer to the camera :p
[20:23] <domlin> he looks cold as well
[20:23] <daveake> cold-blooded
[20:24] <domlin> oh
[20:24] <r2x0t> cool video, but there is some green thing obscuring the view :P
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[20:31] <G0DJA> Test
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[20:56] Nick change: nigelvh_ -> nigelvh
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[22:16] <griffonbot> Received email: Sophie Hart "[UKHAS] Launch Announcement - Project SHARP - Friday 30 March &
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[22:31] <griffonbot> Received email: Nigel Smart "Re: [UKHAS] Launch Announcement - Project SHARP - Friday 30 March &
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[23:17] <griffonbot> Received email: Sophie Hart "[UKHAS] Re: Launch Announcement - Project SHARP - Friday 30 March &
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[23:19] <andrew_apex> hi Graeme_SHARP
[23:19] <Graeme_SHARP> Hi Andy :)
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[23:22] <Matt_soton> you do you two intend to launch after nigel tomorrow?
[23:23] <NigeyS> theyre going to launch before, as the pico may be up for quite a while if all goes to plan
[23:24] <jonsowman> NigeyS: you launching from cardiff?
[23:24] <Matt_soton> ok
[23:24] <Graeme_SHARP> Yep, we're likely to be looking at about a 2 hour flight, so hopefully we'll clear sky by 3 for Nigel to take over!
[23:24] <NigeyS> yup, pretty much on the bank of the bristol channel lol
[23:24] <jonsowman> cool
[23:24] <jonsowman> prediction?
[23:24] <Matt_soton> i tihnk two on .650 should be fine, if they clash itll only be for a short time as one drifts past the other
[23:24] <Matt_soton> also sharp is powered off for a while
[23:25] <NigeyS> okies, fingers crossed
[23:27] #highaltitude: mode change '+o jonsowman' by ChanServ!ChanServ@services.
[23:29] Topic changed on #highaltitude by jonsowman!jonsowman@kryten.hexoc.com: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk - SHARP launch ~1200GMT 30/03/12 from Gloucestershire, Picochu-4 launch 1500GMT 30/03/12 from Cardiff
[23:29] #highaltitude: mode change '-o jonsowman' by ChanServ!ChanServ@services.
[23:31] <andrew_apex> Graeme_SHARP: do you know when you're leaving soton? Rich said 9 - is that still the same?
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[23:34] <andrew_apex> don't worry - got a reply from Rich :)
[23:39] Nick change: heathkid|2 -> heathkid
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[23:55] <NigeyS> ach sorry jonsowman didnt see you ask for a prediction, here's the latest .. http://habhub.org/predict/#!/uuid=7aa9c6dedfb004881a01bad7a1c9d7da8190d7d0
[23:56] <NigeyS> will be negotiating launch with cardiff heliport to
[00:00] --- Fri Mar 30 2012