highaltitude.log.20100522

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[07:10] <jcoxon> morning all
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[07:14] <GW8RAK> Morning jcoxon
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[08:50] <GW8RAK> ping edmoore
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[09:21] <jcoxon> ping russss
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[10:54] <russss> hi jcoxon
[10:55] <jcoxon> hey russss
[10:55] <jcoxon> oh i pinged cause i was setting up my standing order but Hackspace Foundation is too many characters for the payee bit
[10:55] <russss> oh, I don't think most banks actually use that
[10:55] <jcoxon> yeah i guessed that
[10:55] <russss> I suspect it's for your reference only
[10:56] <russss> (which makes me wonder why there's a character limit)
[10:56] <jcoxon> cool, with the standing order setup is that enough to be a member :-)
[10:57] <jcoxon> as was thinking perhaps to go to the space this evening if people were there
[10:59] <russss> yeah I think there are a lot of people going over today
[11:18] <jcoxon> cool cool
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[13:17] <rjharrison> Hi all you should be out in the sun
[13:17] <rjharrison> I may do a teathered launch this evening
[13:19] <fsphil> I was out, *too* hot
[13:25] <jcoxon> http://www.theregister.co.uk/2010/05/21/paris_radio_kit/
[13:29] <fsphil> cute module
[13:31] <DanielRichman> they're using the cc1050
[13:34] Nick change: RocketBoy|Away -> RocketBoy
[13:34] <fsphil> seems a bit overkill for just morse
[13:34] <RocketBoy> humm like I have said before - I don't belive using a cc1050 is leagal
[13:34] <RocketBoy> in the uk
[13:35] <DanielRichman> I got the impression that the laws concerned were clear as mud
[13:36] <RocketBoy> thats like most laws in detail
[13:36] <DanielRichman> mmm
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[14:35] <sbasuita> rjharrison: i thought you hated tethered? what's the payload?
[14:43] <rjharrison> that edmoore
[14:43] <rjharrison> that's
[14:43] <rjharrison> I like tethers in no wind
[14:43] <rjharrison> depends how things look thisevening
[14:43] <rjharrison> RocketBoy how is the balloon situation
[14:45] <sbasuita> hmm... i'll be interested to see how it goes
[14:45] <sbasuita> rjharrison: what altitude are you going for?
[14:46] <RocketBoy> rjharrision: http://randomsolutions.co.uk/Products.htm
[15:01] <RocketBoy> DanielRichman: - here is my take on the legislation:
[15:01] <RocketBoy> http://www.ofcom.org.uk/radiocomms/ifi/tech/interface_req/IR2030final.pdf - this is a guide to the low power devices we use in HABing
[15:01] <RocketBoy> The main requiremnts are to conform to EN 300 220 and EU Directive 1999/5/EC
[15:01] <RocketBoy> EN 300 220 http://www.rfm.com/company/etsi.pdf describes how measurements are to be made
[15:02] <RocketBoy> EU Directive 1999/5/EC can be found here: http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:1999:091:0010:0028:EN:PDF
[15:02] <RocketBoy> there is a guide to it here: http://ec.europa.eu/enterprise/sectors/rtte/files/guide2009-04-20_en.pdf
[15:02] <RocketBoy> The main element being that "The manufacturer has to demonstrate
[15:02] <RocketBoy> the compliance of apparatus by applying a conformity assessment
[15:02] <RocketBoy> procedure."
[15:03] <RocketBoy> Although Ti say the CC1050 "Complies with EN 300 220" since its a chip and not a module & requires RF componants
[15:03] <RocketBoy> around it to make it work will be component and layout critical then I can see how the measuremnts needed (power levels and
[15:03] <RocketBoy> spurious emmisions) can have been made for the
[15:03] <RocketBoy> particular PCB anyone puts it on
[15:04] <SpeedEvil> Presumably the reference design
[15:04] <RocketBoy> So my view is each new layout would need conformance testing
[15:04] <SpeedEvil> Of course - change that...
[15:04] <RocketBoy> exactly
[15:06] <DanielRichman> I see
[15:09] <RocketBoy> just my view - and not neccissarily correct
[15:09] <RocketBoy> bbl
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[16:23] <m0tek> aftn'n
[16:25] <Randomskk> yo
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[16:30] <m0tek> hows it going Randomskk ?
[16:31] <Randomskk> lectures finished wednesday, the weather got very nice thursday
[16:31] <m0tek> exams start...
[16:31] <Randomskk> now it's hot and sunny and I am shut indoors and should be doing more tripos papers
[16:31] <Randomskk> exams are a week on wednesday
[16:31] <Randomskk> (2nd june)
[16:31] <Randomskk> so still have a bit of time
[16:32] <m0tek> i have been sitting in green park drinking fizz and eating strawberriesw with other half
[16:32] <m0tek> tough life
[16:32] <Randomskk> yea it must be really hard
[16:32] <Randomskk> sometimes you get slightly squishy strawberries? while other times maybe some leaf stays on the strawberry
[16:32] <m0tek> currently in kings cross waiting for my platform number to come up
[16:32] <Randomskk> on the flip side I guess you did have much worse exams
[16:33] <m0tek> this is true
[16:33] <Randomskk> and also probably a lot more important exams, as exams go
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[17:00] <fsphil> heh, according to the predictor if I launched a 20g payload with a 1000g balloon today, it would travel all the way over to Scotland, then travel back to land about 33km from the launch site
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[00:00] --- Sun May 23 2010