highaltitude.log.20100521

[00:00] Nick change: asd -> Guest57208
[00:01] Nick change: brennen -> brennen|out
[00:03] <jcoxon> okay nigh tall
[00:03] <jcoxon> night all*
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[00:23] <Guest57208> i'm looking for a guide on encoding rtty
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[00:31] <stilldavid> Guest57208, any more details? what playform?
[00:31] <stilldavid> s/y/t
[00:34] <DaveyC> i have a similar question :) only i'd like to do it via a module in some way, any suggestions?
[00:35] <stilldavid> how do you mean? what kind of module?
[00:35] <stilldavid> the go-to transmitter aroud these parts is the Radiometrix NTX2
[00:35] <DaveyC> im planning on using a much lower frequency than the radiometrix
[00:35] <stilldavid> going for distance?
[00:36] <DaveyC> yep
[00:36] <stilldavid> cool :) where are you based?
[00:36] <DaveyC> so i need to find a way to get the serial gps data into RTTY
[00:36] <DaveyC> based in Liverpool, UK
[00:36] <stilldavid> what kind of computer are you using, and what frequency dare I ask?
[00:37] <Guest57208> i'm looking to use i higher freq and a coridium board
[00:37] <DaveyC> i havent gotten that far yet (computer). frequency.... somewhere around the 27mhz band hehe
[00:38] <stilldavid> Guest57208, I'm not too familiar with that platform :-/
[00:39] <Guest57208> its basic and c running at 60mhz
[00:39] <stilldavid> looking at the specs, it's pretty cool
[00:39] <Guest57208> it does the job
[00:40] <Guest57208> i'm suprised its not more common
[00:40] <stilldavid> DaveyC, I'd say find a decent radio module and the rest is cake.
[00:41] <Guest57208> found this http://www.g7smy.co.uk/?lego/baudot
[00:41] <Guest57208> its realy the specifics of timings, start bit, stop bit max data rate
[00:42] <stilldavid> ack, well I gotta run here, but ask again tomorrow. The guys who really know are asleep :)
[00:43] <DaveyC> goodnight :)
[00:43] <stilldavid> well, it's 6pm here :P
[00:43] <DaveyC> ahh lol
[00:43] <DaveyC> nearly 1am here
[00:43] <stilldavid> see ya, good luck :)
[00:44] <DaveyC> thx :)
[00:44] <Guest57208> bye
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[09:19] <m0tek> does anyone else think that fldigi could do with a better icon?
[09:19] <m0tek> it looks to me like an xray of a broken spine
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[10:31] <edmoore> test
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[10:31] <m0tek> test
[10:31] <edmoore> .
[10:32] <m0tek> ok cool, sorry about that
[10:32] <edmoore> ok cool, sorry about that
[10:32] <m0tek> woah!
[10:32] <edmoore> woah!
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[15:19] Nick change: DaveyC_Away -> DaveyC
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[16:00] <m0tek> .
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[16:28] <earthshine> afternoon
[16:32] Nick change: brennen|out -> brennen
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[16:57] <m0tek> sorry, just trying to get mobile broadbeans set up on eee on train. i think it's working now
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[17:03] <natrium42> sudo /etc/init.d/edd start
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[17:05] <natrium42> Starting Ed Moore service ... [ERROR]
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[20:12] <SpeedEvil> http://www.dealextreme.com/details.dx/sku.22968 Oooh!
[20:12] <SpeedEvil> Easy tracker.
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[21:14] <jiffe> anyone using foxhunting-type gear in their setups?
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[21:33] <jcoxon> evening all
[21:34] <fsphil> evenin'
[21:36] <jcoxon> hey fsphil
[21:39] <jcoxon> hehe - a launch on friday 18th from camridge will land in cambrdige 3 hrs later
[21:43] <fsphil> handy!
[21:43] <jcoxon> probably a little close really
[21:43] <fsphil> spotted the same kind of thing for a launch from here -- it would only land about 5 miles away, can't remember the date
[21:44] <jcoxon> of course its far to far away to be accurate
[21:44] <fsphil> still useful for avoiding the really bad days
[21:45] <fsphil> I few others I saw land in the irish sea
[21:46] <jcoxon> oh yes
[21:46] <fsphil> how flexible are the CAA .. say if the planned launch date was looking awful?
[21:47] <jcoxon> its always best to get a launch 'window'
[21:47] <jcoxon> has they aren't flexibile at all
[21:47] <jcoxon> still takes 28 days to get a new one
[21:47] <fsphil> I'm hoping to launch something in July, so I'd like to start the paperwork now
[21:47] <jcoxon> or around that
[21:47] <jcoxon> yeah start soon - next week
[21:47] <fsphil> yep
[21:48] <jcoxon> they are a bit swamped right now apparently
[21:48] <fsphil> ah the ash cloud
[21:56] <fsphil> so the caa will post out the permit?
[21:57] <fsphil> assuming they give the go ahead
[21:57] <jcoxon> yeah - ask for a window - they are happy to give one out
[21:58] <fsphil> yep, I've got a few holidays in july so will probably use that as my window
[21:59] <fsphil> I wasn't really involved with this aspect of the cirrus launch -- all new to me
[21:59] <jcoxon> hehe launching is fun
[21:59] <fsphil> it is!
[22:00] <jcoxon> though i always worry about where its going to land
[22:01] <jcoxon> that said my last 2 launches have landed very far away
[22:01] <fsphil> how far?
[22:01] <fsphil> distance is my biggest concern -- though if it does go far, I'd want it to go really far. enough to clear the sea
[22:02] <fsphil> and hope that whoever finds it can post it back
[22:02] <jcoxon> well france and the netherlands
[22:02] <jcoxon> the flight computer has a pesky habit of coming back - even though i write it off as never going to come back
[22:02] <fsphil> ah, ballast halo?
[22:02] <jcoxon> tis a lucky payload
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[22:03] <fsphil> I might put in some kind of cut-down
[22:04] <fsphil> if all else fails, bring it back
[22:04] <jcoxon> tis a good idea
[22:05] <fsphil> i'd be afraid of that part failing -- releasing too soon
[22:05] <jcoxon> well its better safe then sorry
[22:05] <jcoxon> just be careful about making it so it doesn't fire on the ground - i deafend my self once
[22:05] <jcoxon> for Pegasus V
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[22:06] <fsphil> how did it work (or suppose to work) -- does it break the line, or is the whole payload supported by it?
[22:07] <jcoxon> usually put it on hte main balloon line, its cuts or blows releasing the balloon
[22:07] <jcoxon> above the parachute
[22:07] <jcoxon> traditionally
[22:11] <fsphil> and some kind of uplink
[22:12] <jcoxon> well usually automatically
[22:12] <jcoxon> say when the payload goes outside a set zone
[22:12] <fsphil> ah, program in a safe range
[22:12] <fsphil> even better
[22:12] <fsphil> although I'm planning an uplink anyway
[22:13] <fsphil> whether or not that'll happen though, is another matter
[22:16] <fsphil> the CAA form looks pretty tame -- the only complication for me is I might have to deal with the IAA
[22:16] <jcoxon> yeah its not difficult, they just aren't that speedy
[22:17] <fsphil> yea, Jon said that too after he was dealing with them
[22:18] <fsphil> right then, I'll get that done this weekend -- then it's a race to finish the payload :)
[22:18] <jcoxon> hehe
[22:18] <fsphil> hopefully the image download will work a lot better this time
[22:19] <jcoxon> i'm sure it'll work great
[22:20] <fsphil> well if it doesn't spin as much, should be fine
[22:22] <fsphil> or if there was some way of keeping the antenna vertical
[22:22] <fsphil> ooh
[22:23] <jcoxon> i use a straw
[22:23] <jcoxon> with the wire inside
[22:24] <fsphil> did you have a ground plane?
[22:24] <jcoxon> yes 4 radial wires
[22:25] <fsphil> the ntx2 datasheet recommends angling them away from the main element slightly
[22:25] <fsphil> I noticed the vertical I have here does the same thing
[22:25] <fsphil> any idea what that's for?>
[22:25] <Randomskk> fsphil: check it out, http://www.flickr.com/photos/randomskk/4413273403/ http://www.flickr.com/photos/randomskk/4413279333/
[22:26] <jcoxon> yes
[22:26] <jcoxon> it brings the impedence up to 50 ohms
[22:26] <Randomskk> it's this inside: http://www.flickr.com/photos/randomskk/4414039114/
[22:26] <Randomskk> the CUSF soldering iron is epic at doing those radials, it soldered straight to that massive bit of copper in less than a second, no whining
[22:26] <fsphil> aaah, makes sense jcoxon
[22:28] <fsphil> I remember that now Randomskk -- wasn't there an apple logo on the end?
[22:28] <Randomskk> uhm
[22:28] <Randomskk> not that one
[22:28] <Randomskk> depends what you're thinking of
[22:30] <fsphil> lemme see if I can dig it out -- my memory sucks
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[22:35] <fsphil> seems I imagined it
[22:35] <fsphil> carry on :)
[22:36] <Randomskk> :P
[22:36] <fsphil> I've got some 1mm rods, was thinking of using those for the elements but I'd be worried about them being too pointy
[22:36] <fsphil> I wouldn't want them to land on me that's for sure
[22:36] <N900evil> balls
[22:37] <jcoxon> fsphil, go for wire, the general consensus is to avoid pointy things
[22:37] <N900evil> wrap the ends in a circle, add balls
[22:37] <N900evil> or that
[22:37] <Randomskk> wire in straws works really well
[22:37] <fsphil> yea -- the wire would be more likely to survive the landing anyhow
[22:37] <Randomskk> our antenna was seeing S9 on handhelds with omnis from fairly far away
[22:38] <Randomskk> also cheap and easy to make
[22:43] <fsphil> whatever rjh used on his last flight worked a treat -- lovely signal here once it settled own
[22:43] <fsphil> down
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[00:00] --- Sat May 22 2010