highaltitude.log.20131113

[00:00] <G8APZ> if B-28 stays up, could need trackers in N Spain!!
[00:00] <G8APZ> Santander is on the predicted track
[00:00] <gonzo_> there are so few trackers in .fr, you will have lots of excuses to go out !
[00:01] <G8APZ> Gonzo I don't need excuses! I have 2m EME and MS setup, along with 100w on 70cm and sometimes 23cm and 3cm
[00:02] <G8APZ> XYL accepts that I'm in the shack at all hours!
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[00:03] <gonzo_> a shed is the key to a happy marriage!]
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[00:04] <DL7AD> receivers in spain already requested....
[00:04] <DL7AD> 2 in madrid
[00:04] <DL7AD> 1 50km south of bordeaux
[00:04] <G8APZ> gonzo unfortunately the shack is in the garage... and the light attracts mozzies
[00:05] <chrisstubbsM6EDF> Im off
[00:05] <chrisstubbsM6EDF> Happy flying LeoBodnar
[00:05] <G8APZ> GN chrisstubbsM6EDF
[00:05] <LeoBodnar> cheers chrisstubbsM6EDF
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[00:06] <G8APZ> packet 108 failed... looks OK but ???
[00:10] <db_g6gzh> Your 0.0227 should have been 0.0228 8-)
[00:15] <G4AIU-Eugene> GN all - did not hear B-28
[00:15] <Laurenceb_> slowest ascent ever
[00:16] <LeoBodnar> GN G4AIU-Eugene
[00:16] <Steve_G0TDJ> Hey Guys
[00:16] <LeoBodnar> I think so Laurenceb_
[00:16] <Laurenceb_> oh well work tomorrow
[00:16] Action: Laurenceb_ zzz
[00:16] <Steve_G0TDJ> Everyone turning in...
[00:16] <LeoBodnar> gn Laurenceb_
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[00:17] <Steve_G0TDJ> I've enjoyed tracking '28 LeoBodnar
[00:17] <LeoBodnar> APRS turned on http://aprs.fi/#!mt=roadmap&z=11&call=a%2FM0XER-7&timerange=3600&tail=3600
[00:17] <LeoBodnar> Thanks Steve_G0TDJ !
[00:17] <LeoBodnar> As always XD
[00:17] <Steve_G0TDJ> 10MW rf?
[00:17] <Steve_G0TDJ> Mw EVEN
[00:17] <Steve_G0TDJ> dAMN!
[00:17] <Steve_G0TDJ> mW
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[00:18] <Steve_G0TDJ> It's just begun to start getting weak. Had a solid signal earlier
[00:18] <LeoBodnar> APRS is about 20mW and UHF is probably less than 10mW
[00:19] <Steve_G0TDJ> Still decoding nicely
[00:19] <LeoBodnar> Cool
[00:20] <Steve_G0TDJ> Famous last words. The pips have dissapeard
[00:20] <LeoBodnar> Oh
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[00:21] <LeoBodnar> Altogether?
[00:21] <G8APZ> Steve_G0TDJ I lost them 10 mins ago so I've stopped tracking!! Looking forward to next flight
[00:21] <Steve_G0TDJ> Might be the opposite hill. It's not as high as the one to north but FLDigi reports elevation at 2.1 deg on the last sentence and that might be enough
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[00:21] <Steve_G0TDJ> I can just see them LeoBodnar
[00:21] <Steve_G0TDJ> Very weak now
[00:21] <Laurenceb_> updated 15s ago
[00:22] <G8APZ> pips seem weaker than packets this evening
[00:22] <Steve_G0TDJ> LeoBodnar: DO you do the domino and APRS with the same MCU?
[00:22] <LeoBodnar> Interesting, I will investigate tomorrow
[00:22] <LeoBodnar> Yes Steve
[00:22] <Steve_G0TDJ> Nice
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[00:23] <LeoBodnar> It's so sloooow
[00:23] <G8APZ> LeoBodnar you must do some revenue earning work tomorrow !!
[00:24] <LeoBodnar> Indeed...
[00:24] <G8APZ> LeoBodnar and perhaps scrounge some of that material they use as insulation in the Swiss solar powered plane!
[00:24] <Steve_G0TDJ> LeoBodnar: http://i.imgur.com/KNIWnbu.jpg The pips
[00:25] <LeoBodnar> I need 1GHz+ spectrum analyser
[00:26] <Steve_G0TDJ> Cost a couple of quid Leo
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[00:29] <G8APZ> LeoBodnar That's one way to ensure there are no taxable profits!!
[00:29] <Steve_G0TDJ> Loosing it now Leo. Missed both packets that time. No drift though.
[00:29] <LeoBodnar> I am still loading your image. 30% :D
[00:30] <Steve_G0TDJ> What?
[00:30] <Steve_G0TDJ> Reload
[00:30] <Steve_G0TDJ> I hope the prediction is correct - You will conquer the Med.
[00:31] <LeoBodnar> imgur is always slow for me
[00:32] <Steve_G0TDJ> I don't think I'm going to be much more use. Loosing the pips in the noise now.
[00:33] <LeoBodnar> Cheers Steve_G0TDJ
[00:33] <LeoBodnar> craag has anybody retrieved PAVA-A?
[00:33] <Steve_G0TDJ> Always a pleasure Leo :-)
[00:34] <Steve_G0TDJ> I think it's my turn to turn in. I hope '28 is another record breaker :-)
[00:34] <Steve_G0TDJ> Catch you tomorrow - Have a good night.
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[00:34] <craag> LeoBodnar: I haven't had any news back, they don't check their internet often in that part of the country ;)
[00:34] Nick change: Steve_G0TDJ -> Steve_G0TDJ_AFK
[00:34] <craag> *check their email
[00:35] <LeoBodnar> Ah, OK
[00:36] <craag> I linked them spacenear.us didn't I.. that'll have confused them.
[00:36] <craag> "What, you want us to go swimming???"
[00:36] <G8APZ> LeoBodnar I just emailed you an interesting screengrab!
[00:37] <G8APZ> where did pava fly to?
[00:37] <db_g6gzh> Out of range for me now. No APRS at that range either. Night all.
[00:38] <LeoBodnar> Thanks G8APZ fro the email! XD
[00:38] <LeoBodnar> Good night db_g6gzh !
[00:38] <G8APZ> LHR UFO!!
[00:38] <db_g6gzh> Night LeoBodnar
[00:38] <craag> Does anyone have a screengrab of the resting place of PAVA-A?
[00:39] <LeoBodnar> Do you need just the coordinates?
[00:39] <craag> Could do, although I like to have the cluster of a few points on a map.
[00:40] <LeoBodnar> I can upload a screen, gimme a min
[00:40] <craag> Actually I should be able to put multiple into gmaps.
[00:41] <G8APZ> craag have you updated to v3 API?
[00:41] <G8APZ> v2 goes on 19th Nov
[00:41] <craag> G8APZ: My stuff was always on v3.
[00:41] <craag> spacenear is still on v2
[00:41] <G8APZ> ah OK!!
[00:41] <G8APZ> yes.. that may be a problem
[00:42] <craag> well they are going to keep compatability
[00:42] <craag> you get a v3 api with a shim.
[00:42] <craag> but they don't *guarantee* it'll work 100%
[00:42] <G8APZ> "a wrapper" they say but who knows... I haven't seen any testing!
[00:42] <LeoBodnar> http://leobodnar.com/balloons/files/PAVA-A.png
[00:42] <craag> LeoBodnar: Fantastic thanks :D
[00:43] <G8APZ> XABEN60 was recovered OK last night
[00:44] <G8APZ> interesting account from Steve
[00:45] <LeoBodnar> I wanted a float :D
[00:50] <G8APZ> Time to generate some zzzs - nite all
[00:51] <LeoBodnar> Good night!
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[00:51] <LeoBodnar> I am going too! Good night guys! Thanks for tracking!
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[01:09] <chrisg7ogx> doing well gonzo
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[01:21] <chrisg7ogx> strings #137 and 138 partials
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[06:48] <Upu> morning
[07:02] <Darkside> evening
[07:02] <Upu> depends on your point of view I guess
[07:02] <Darkside> :P
[07:05] <DL7AD> morning
[07:07] <Upu> right work calls bbl
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[07:10] <DL7AD> france overslept
[07:10] <DL7AD> we will get an WebSDR in madrid today
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[07:17] <DL7AD> madrid websdr http://matlab.idr.upm.es:8901/
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[07:23] <DL7AD> madrid websdr http://matlab.idr.upm.es:8901/
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[07:31] <LeoBodnar> morning!
[07:34] <arko> Morning!
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[07:49] <DL7AD> madrid websdr http://matlab.idr.upm.es:8901/ LeoBodnar
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[08:11] <DL1SGP> Morning
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[08:18] Nick change: KipK_away -> KipK
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[08:28] <fsphil> morn
[08:36] <x-f> ing
[08:38] <x-f> did it.. burst?
[08:40] <fsphil> hard to tell
[08:41] <fsphil> does look like it ascended a bit too far after sunrise
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[08:47] <f5vnf-> first time we get a sniff of a floater since B11 and i'm fast asleep
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[08:48] <f5vnf-> as it is now transmitting APRS has it finished on 434 completely
[08:48] <UpuWork> no will still be TXing on 434.500
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[08:49] <LeoBodnar> Aw, saucer is coming down.
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[09:20] <Hix> eroomde about?
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[09:46] Nick change: Steve_G0TDJ_AFK -> Steve_G0TDJ
[09:47] <Steve_G0TDJ> Good Morning Guys
[09:47] <daveake> Morning Steve
[09:48] <daveake> I bought some guitar strings yesterday :)
[09:48] <Steve_G0TDJ> :D Cool. They work very well
[09:48] <Steve_G0TDJ> YOu did get the plated ones I take it?
[09:48] <daveake> yes same ones
[09:48] <Steve_G0TDJ> Great.
[09:49] <Steve_G0TDJ> I'd love to take credit for the idea but it was Leo
[09:49] <daveake> Yeah I saw on your blog
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[09:49] <daveake> anyhoo off out today
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[09:49] <Steve_G0TDJ> Seeya!
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[09:54] <fsphil> you plucked that idea from Leo?
[09:54] <Steve_G0TDJ> Ha ha! :D Yes
[09:59] <G8APZ> B-28 doing well - just crossed into Spain at Gijon and following the railway line out of Gijon!
[09:59] <fsphil> falling fast
[09:59] <fsphil> but at least it's going to hit solid ground
[09:59] <fsphil> wonder if someone in spain can recover it
[10:00] <Steve_G0TDJ> EA1EXV is on the tracker map from 20hrs ago. Maybe they'd do it.
[10:00] <G8APZ> could be possible depending on how long the APRS is received before touchdown
[10:01] <fsphil> it's not ideal geography for radio
[10:02] <G8APZ> Perfect track flying down the railway line.....
[10:05] <Steve_G0TDJ> Not updated for a while....
[10:05] <Steve_G0TDJ> LOL...
[10:05] <G8APZ> pity that the spacenear B-28 icon is stuck in N France! Perhaps someone will receive 70cm soon and get it to move!!
[10:06] <Steve_G0TDJ> Not many listeners over there. They all seem to be on the coast.
[10:08] <G8APZ> some programming tricks could achieve that by knowing which flight packages are the same flight... then treating the GPS pos as applying to all.
[10:09] <Steve_G0TDJ> Yeah. B-28 definitley on it's way down. Quite fast as Phil said.
[10:09] <Steve_G0TDJ> EA1WS could recover it :-)
[10:10] <Hix> is it possible to update an ubuntu installation to a newer xubuntu distribution or are they too different
[10:11] <craag> Hix: Is possible by swapping out packages and repos. Would be a real faff and rely on some documentation about the new packages/repos you need.
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[10:15] <Hix> won't be going there then. It's my nephews ThinkPad I gave him. it's running 10.02 and could do with an update I'll just keep it as Ubuntu. Cheers craag
[10:15] <eroomde> so footage of our mars parachute testing has inexplicably made it onto a video about soyuz entry descent and landing
[10:15] <eroomde> http://youtu.be/-l7MM9yoxII?t=15m14s
[10:16] <craag> Hix: If you update to 12.04 LTS, that should give you the most chance of everything working afterwards.
[10:16] <craag> LTS => LTS :)
[10:17] <Hix> yup ta
[10:17] <craag> any => non-LTS :(
[10:17] <Hix> eroomde - your vim quest. Seen this as a tool to get people using it? http://vim-adventures.com/
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[10:17] <eroomde> i have seen a few adventure game vim things yep
[10:17] <eroomde> probably all good
[10:18] <eroomde> for python development, i might be inclined to go to something newer that 12.04 LTS
[10:18] <eroomde> a lot of the packages for things like ipython and ipython notebook and old
[10:18] <eroomde> although you can install them separately
[10:19] <craag> Yep I would personally just wipe and install 13.10.
[10:20] <eroomde> agreed ^
[10:21] <eroomde> unity is a lot faster and more stable on 13.10 too, i think
[10:21] <craag> (although I'd install xubuntu)
[10:21] <craag> Haven't tried unity recently tbh.
[10:22] <eroomde> it's slightly lighter weight for sure
[10:22] <Hix> I'm using xubuntu though my nephew has my old X60s with Ubuntu. I really can't be bothered with a load of faff. He is a complete tech troglodyte. Copy paste is his limit.
[10:22] <eroomde> but equally i don't really notice the performance penalty, even on my old thinkpad
[10:23] <craag> I've got xubuntu on my netbooks that wouldn't handle unity, and then stuck it on the desktop for uniformity.
[10:23] <craag> Hix: If it's only being used for web/email, might as well stick with the LTS then :)
[10:23] <eroomde> i'm doing it that way as i just want to stay completely vanilla for the time being, until ubuntu goes too far (which might be soon!)
[10:23] <fsphil> xfce ain't too bad
[10:24] <eroomde> and so i can find answers to problems on google fairly easily
[10:24] <fsphil> I've been using it on and off since gnome went crazy
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[10:24] <eroomde> but I am considering jumping to something based on debian with a lightweight window manager after this ubuntu
[10:24] <Hix> xfce is what ubuntu uses isn't it?
[10:24] <eroomde> something like crunchbang
[10:24] <eroomde> xubuntu
[10:24] <Hix> *xubuntu
[10:24] <fsphil> ubuntu use unity
[10:24] <craag> yep
[10:24] <eroomde> yep
[10:24] <fsphil> badly named perhaps
[10:24] <fsphil> since they're the only distro that does
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[10:25] <fsphil> debian are using xfce by default these days
[10:26] <eroomde> if you fo go vanilla ubuntu, Hix, fixubuntu.com
[10:26] <eroomde> i thought they were just proposing it?
[10:26] <Hix> blimey - how big is the raspbian.img? pkill showing up to 2.8Gb so far
[10:26] <craag> I used crunchbang for linux vms on windows, ram usage was nicely minimal.
[10:26] <G8APZ> all these non descriptive names...can't see it catching on big time!
[10:26] <eroomde> craag, cool
[10:26] <eroomde> i tried it in a vm too
[10:26] <eroomde> i was impressed
[10:27] <eroomde> it would be just the ticket on my laptop, probably
[10:27] <craag> Specifically running scrobbler in a linux vm took less ram than the lastfm page in chrome :|
[10:27] <fsphil> chrome is quite memory hungry these days
[10:27] <craag> sorry, shell-fm
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[10:28] <fsphil> or maybe just websites have more images and content
[10:28] <craag> also it's a v flashy flash player with ads etc..
[10:30] <eroomde> i'd like debian but with a slightly faster release cycle
[10:30] <eroomde> i quite like using package managers, they're much better at keeping tracks on everything than me
[10:30] <eroomde> but for example the eagle in debian wheezy is still 5.x
[10:31] <eroomde> whereas eagle is on 6.5 atm
[10:32] <craag> On similar and contrary note; I put new hdd in my laptop last night, so need to decide win7/8/8.1 [N] for that side of the disk, anyone got any suggestions?
[10:32] <fsphil> not 8
[10:32] <Steve_G0TDJ> not 8
[10:32] <craag> win 7 it is then, cheers :)
[10:32] <Steve_G0TDJ> Widnows 7
[10:33] <Steve_G0TDJ> or Windows if you prefer LOL
[10:33] <fsphil> better answer, see how long you can stick 8 before you install 7
[10:33] <FoneSRC> quit
[10:33] <FoneSRC> #quit
[10:33] <fsphil> /quit
[10:33] <eroomde> /quite
[10:33] <fsphil> /quilt
[10:33] <FoneSRC> ;) thank's have a nice day
[10:33] <fsphil> np :)
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[10:33] <eroomde> #quit is probably for recovering alcoholics
[10:34] <Hix> 8 is evil
[10:34] <Steve_G0TDJ> Actually I've had little experience with Win8 but EVERYONE who has chatted to me about it hates it.
[10:34] <Hix> #quit is for vi noobs to find out :q
[10:34] <fsphil> server 2012 is even more evil than 8
[10:34] <DL1SGP2> heh B-28 seems to want to inspect the landing area of dave's spanish flight
[10:35] <eroomde> brb reboot
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[10:35] <DL1SGP2> afk again
[10:36] <fsphil> 7 has some really annoying things too. they managed to ruin the file search in explorer
[10:37] <Steve_G0TDJ> It's not perfect but I have '7 running for weeks without a reboot and it doesn't seem to suffer.
[10:37] <Hix> can't say I've noticed search functionality being affected
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[10:44] <Reb-SM3ULC> Hix: i run x- and & l-ubuntu on most of my machines. i think unity or at least how ubuntu has set it up makes it much more complicated to use
[10:45] <Hix> I prefer xubuntu myself, shame I hadn't heard of it when I set up nephews computer ages ago
[10:48] <Reb-SM3ULC> Hix: xfce is great. just installed on a small dell from 2004 with 1.5 gb ram. runs just fine. gqrx was a bit harder on it... :)
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[10:52] <Hix> not having much luck dd'ing raspbian here. think bs=4M is not happening so have to try bs-1M :/
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[11:01] <fsphil> dd'ing can be very slow Hix
[11:02] <fsphil> depending on the SD card and the reader
[11:04] <Hix> yeah - it completes but seems to corrupt I'm trying again after a triple format just in case :D
[11:04] <fsphil> ooh not seen that happen
[11:04] <Hix> I've seen it once - on a HDD image :/
[11:05] <Hix> dd is my disc clone preference, though not on 1Tb drives :)
[11:05] <Hix> sloooooooooooooow
[11:05] <fsphil> ddrescue works nice for iffy drives
[11:06] <Hix> I remeber that from a long time agot with IDE drives that always failed on me
[11:07] <Hix> just hoping the powered USB port on the laptop can sullpy enough cojones for the pi when i get it running - forgot the usb plug today
[11:08] <Reb-SM3ULC> should b eok right?
[11:08] <Reb-SM3ULC> for the pi alona at least
[11:08] <Hix> thinking so, only time will tell
[11:08] <fsphil> not all usb ports are equal
[11:09] <Reb-SM3ULC> fsphil: hehe, right
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[11:13] <fsphil> fedora 20 beta already seems more stable than fedora 19
[11:14] <eroomde> Hix, what did you learn from putting ipython notebook on windows?
[11:14] <eroomde> doable?
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[11:16] <Hix> it's a fucking ballache. but you can do it
[11:17] <Hix> cygwin and anaconda
[11:23] <Hix> eroomde go the cygwin route. The canopy and anaconda methods were painful
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[11:31] <Hix> huzzah. Pi working at last. Well apart from no x forwarding over serial as yet
[11:31] <fsphil> why would you do that?
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[11:32] <Hix> gui
[11:32] <fsphil> over serial?
[11:32] <Hix> nothing hdmi usable here and no adaptors
[11:33] Nick change: KipK -> KipK_away
[11:33] Nick change: KipK_away -> KipK
[11:34] <mfa298> X over serial sounds painful - I did try it once over dialup and it wasn't fun (back when netscape 3 was the browser of choice)
[11:34] <mfa298> X over SSH would be more likely (assuming you can get an ethernet connection to the pi)
[11:34] <Hix> nothing is as painful as trying to remotely support my nephew on a shite connection over vnc
[11:35] <fsphil> remote X on anything but a LAN is pretty poor
[11:35] <mfa298> X over a slow link is probably comparable
[11:36] <mfa298> X really isn't designed for slow network links
[11:36] <gonzo_> doesn't the pi have composite video too?
[11:36] <fsphil> it does
[11:37] <Hix> I'm at work with no connectors or leads. Not sure - can I have some leads for the pi under my desk would be take well at all :D
[11:37] <gonzo_> there's a poss for you then hix ?
[11:37] <mfa298> although finding a screen with composite in might be harder than finding one with hdmi
[11:38] <Hix> I'm at work. I won't be finding anything unfortunately
[11:38] <gonzo_> I must live in a different time warp then
[11:38] <gonzo_> all my media system is still on compositr pal
[11:39] <fsphil> all hdmi/dvi at my place
[11:39] <gonzo_> quality is low, but I compensate by taking my glasses off
[11:39] <fsphil> obvious exception being the old commodores
[11:39] <mfa298> then again you don't need any screens for a pi to be useful. Out of 4 pi's only one of my is connected to a screen (and that's only because it's running rasbmc)
[11:39] <Hix> you do if it's the first time you've ever booted it ;p
[11:40] <mfa298> gonzo_: I've got a fair bit of composite here as well, It's much easier running a bit of coax than sorting out long runs of hdmi.
[11:40] <fsphil> oh yea, nestbox is composite too
[11:40] <fsphil> long run over cat
[11:40] <fsphil> 5
[11:41] <gonzo_> do you run iot with a balun phil?
[11:41] <gonzo_> it
[11:42] <fsphil> yea
[11:42] <fsphil> works really well
[11:42] <mfa298> most of the good tech is hdmi into the local tv and composite via a matrix switcher. Means I can watch blurays in bed - although i have to go to the other room to pause it :(
[11:42] <gonzo_> I have a few for that job. Though only ever used them for sending 10MHz reference sigs
[11:43] <Hix> did you make the balun, i forget. I sapp something on appcad about making one, but got cinfuzzled
[11:43] <fsphil> got them of cpc -- though I opened them up, it's just a transformer and a diode
[11:44] <fsphil> should be very easy to make one
[11:44] <fsphil> just not sure what kind of transformer it is
[11:44] <gonzo_> had some fun with a tv slaes person a while ago. Said that I used to have a modulator from a tv box, to feed into the ant dist amp, so you could watch the chans on all sets. But doesn't work on the dvbt only set. So want a dvb version.
[11:44] <fsphil> not sure what the diode was doing either
[11:45] <craag> 75 ohm unbalanced to 100 ohm balanced. No idea what the diode would be though..
[11:45] <fsphil> I'd love a dvb-t modulator :)
[11:46] <jedas> i wished to have one for FPV flights
[11:46] <fsphil> they're still a bit expensive
[11:46] <gonzo_> I was given a handful of baluns. think they were for some industrial dist app. OPened one up and looks like it was 75-100r
[11:46] <jedas> but they are still to heavy and power hungry
[11:47] <craag> fsphil: expensive cos urrgh OFDM :/
[11:47] <fsphil> aye
[11:48] <fsphil> shame tv's can't handle dvb-s
[11:48] <fsphil> or that dvb-t had a simple mode
[11:48] <jedas> what you are going to achieve ?
[11:48] <Hix> that kind fsphil http://goo.gl/wLNTiO
[11:49] <craag> There was an interesting talk at BATC on their new DVB-S modulator, based on a DVB-T modulator sold by antennair.
[11:49] <fsphil> jedas: send video around the house
[11:49] <mfa298> I thought I'd seen a dvb-t modulator somewhere that wasn't too excessibly expensive
[11:49] <jedas> i've used FM tv modulator, at 1.2ghz or 2.4, with 100-200mW it covers all house
[11:49] <G8APZ> Looks like B-28 stopped updating on spacenear - must be out of range of 2m APRS
[11:49] <mfa298> although cost more than my urm70 solution so I wasn't interested in it
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[11:49] <fsphil> jedas: more than one channel
[11:49] <jedas> ant costs <50$, rx+tx
[11:49] <craag> The FPGA code for DVB-S was 1/10th the size (iirc) of the code for DVB-T!
[11:50] <fsphil> dvb-s is just BPSK isn't it?
[11:50] <craag> QPSK
[11:50] <Reb-SM3ULC> G8APZ: only at 1200m si pretty low
[11:51] <G8APZ> Reb-SM3ULC yes, and sparsely populated mountainous country
[11:51] <jedas> anyway, cheapest option will be probably wifi :)
[11:51] <fsphil> yea, wifi and a Pi strapped to the back of the telly :)
[11:51] <G8APZ> Reb-SM3ULC may not be that much above the terrain in practice!
[11:52] <jedas> so i watch TV now. with xbmc it's very nice
[11:52] <jedas> it even does understand CEC commands from samsung, so no need for second remote :)
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[11:53] Nick change: Geoff-G8DHE_ -> Geoff-G8DHE-M
[11:53] <fsphil> oooh the Pi can do that?
[11:53] <jedas> v1 is not that fast, but v2 goes quite nice
[11:53] <mfa298> My experience of the Pi with wifi and rasbmc is that it doesn't work all that well.
[11:54] <mfa298> Wired ethernet is good though
[11:54] <G8APZ> Reb-SM3ULC it passed a peak that was over 1200m before APRS stopped
[11:54] <jedas> hm, actually i was runing wired to PI, so you might be right here
[11:54] <mfa298> and the Pi supports CEC with at least some distros (I'm using it on rasbmc)
[11:55] <Hix> I really wish they could have afforded at least 2 holes for standoffs/ mountings though
[11:55] <jedas> I was thinking about addning some IR reciever or something like that, but pushed buttons, and it worked out of the box, quite interesting experience :)
[11:55] <jedas> why the duck tape is for ?
[11:56] <gonzo_> stop it going quackers
[11:56] <G8APZ> :-)
[11:57] <gonzo_> craag, have seen some talk of that dvb unit
[11:58] <gonzo_> does lookm interesting. Still expensive
[11:58] <gonzo_> I think the base HW is intended for DVB distribution in hotels etc
[11:58] <craag> Yep
[11:59] <jedas> but you won't be able to stream it in TV frequency, so you need custom settobpx too.
[11:59] <craag> it's been tweaked for ATV, and the FPGA code re-written for DVB-S
[11:59] <jedas> it makes sense for cable instalations
[12:00] <gonzo_> the idea of low rate dvb in less than a MHz of bandwiidth is certainly interesting. Anyone for some band one dx'ing?
[12:00] <craag> gonzo_: It's sold for cost. It's pricey but is a fine piece of kit. (Compared to the 10kg Harmonic MPEG-2 encoders sitting here next to me!)
[12:01] <craag> gonzo_: Charles G4GUO has some interesting ideas in that area.
[12:01] <gonzo_> not kept up on the dev. Just a scan of cqtv
[12:03] <craag> Take a look at the talk on the BATC archive, I found it one of the most interesting of the weekend :)
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[12:08] <Reb-SM3ULC> G8APZ: ah, so it was very close to the ground then
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[12:09] <G8APZ> Reb-SM3ULC yes.. have a zoom in using TERRAIN option
[12:11] <Reb-SM3ULC> ah, used the habhub.. no terrain ther..
[12:12] <gonzo_> craag, ta, will do
[12:14] <G8APZ> Reb-SM3ULC Spacenear.us has the Terrain overlay
[12:14] <Reb-SM3ULC> G8APZ: some wild ride in the backdraft of the peak.. 23 m/s...
[12:14] Nick change: KipK -> KipK_away
[12:15] <Reb-SM3ULC> G8APZ: sure, always run both, sine spacenear lacks groundspeed
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[12:39] <SP3OSJ> Hi, Can someone explain balloons Leo Bodnar? Now, flying B-25, 6,7,8, .... and M0XER.1, 2,3,4 .... Is it a balloon?
[12:40] <SP3OSJ> one balloon?
[12:41] <x-f> yes, one balloon and two transmitters - one for RTTY on 70cm, other for APRS on 2m as M0XER
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[12:51] <DL7AD> SP3OSJ x-f: it's one transmitter.
[12:51] <x-f> technically yes, i tried to explain it simply
[12:53] <DL7AD> x-f: *thumbs up
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[12:59] Nick change: KipK_away -> KipK
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[13:04] <SP3OSJ> A transmitter in the space of two places?
[13:05] <SP3OSJ> one transmitter at two different heights?
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[13:07] <fsphil> one payload, one transmitter, two callsigns
[13:07] <fsphil> it uses Leo's callsign on 144.800
[13:07] <fsphil> it's own callsign on 434mhz
[13:07] <mattbrejza> looks like ASTRA did well last night, yay for tcxo
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[13:10] <SP3OSJ> M0XER-7 and B-28 is one of the transmitter? M0XER-7 maximum height of 7500m. B-28 maximum height of 5700m.
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[13:13] <mfa298> SP3OSJ: M0XER-7 and B-28 are the same balloon, but neither track has all the points
[13:13] <mfa298> there shouldn't be any data from M0XER whilst over the UK (as airborne AR isn't allowed here) and there isn't data from B-28 all the time as there wern't receivers in range
[13:13] <DL1SGP2> SP3OSJ: B-28 was without direct telemetry decoding starting at about 2:45am, after that time it could have climbed up a bit until the APRS was picked up at 6:45am
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[13:15] <mfa298> althogh technically I don't think there should have been any APRS until the balloon reached spain (as I thought over international waters the UK license terms still applied)
[13:16] <SP3OSJ> M0XER-7 no transmission over the UK and France
[13:16] <DL1SGP2> the last B-28 position apparently was added manually based on the APRS data, hence the path of B-28 is a bit different than M0XER-7 as that is a direct connection between 2:45am and 11:15am whereas the APRS path contains detailed data from 6:45am to 11:15am
[13:17] <mfa298> it might be airborne AR isn't allowed in france either so aprs would have been turned off (like in the uk)
[13:17] <jedas> and what do you mean, by, that there is only one transmitter?
[13:17] <jedas> how can it cover both bands ?
[13:18] <DL1SGP2> airborne APRS is only permitted on a special frequency over there which is not the general 144.8 MHz downlink and therefore not integrated in the infrastructure as we have it like for aprs.fi
[13:18] <mfa298> it's a TX module that can cover a wide range of frequencies
[13:18] <fsphil> it's frequency agile
[13:18] <SP3OSJ> What happens to APRS Balloon flies from Poland to the UK?
[13:19] <DL1SGP2> SP3OSJ: either you code it to witch off the APRS based on location (like leo does) or you keep it going :)
[13:19] <mfa298> SP3OSJ: if it's over a country that doesn't allow airborne APRS then technically you're in breach of the license terms (similar if it's not in a country that has a reciprocal license agreement)
[13:19] <DL1SGP2> indeed
[13:20] <jedas> what about aprs coverage, is it very dense ?
[13:20] <mfa298> as for what will really happen, probably nothing apart from some grumpy old men with beards moaning.
[13:20] <fsphil> aprs coverage is variable
[13:20] <fsphil> almost non-existant in n.ireland
[13:21] <fsphil> though if one got this far I'd setup an igate just for it :)
[13:21] <DL1SGP2> heh fsphil
[13:21] <mfa298> aprs generally has a fairly good coverage everywhere but it's based on amateur radio so you need a license to use it and in some places (UK) you can't use Amateur Radio airborne
[13:24] <mattbrejza> http://www.bbc.co.uk/news/magazine-24917880
[13:26] <mfa298> Lolx at the end of that article: Stop/Start is a series of video features for the BBC News website which follows both new trends that are beginning and old traditions that are coming to an end.
[13:26] Action: mfa298 wonders which category they put that article in.
[13:30] <adamgreig> "at the opposite end of the spectrum"
[13:30] <adamgreig> niiice
[13:31] <mfa298> that looks like a half decent video as well.
[13:32] <mfa298> The beard count looked to be quite low, and average age is much lower than 80.
[13:39] <jedas> :)
[13:42] <Reb-SM3ULC> hehe¨
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[15:34] <uu4jlm_Valeryi> A5< ?@825B
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[15:41] <UpuWork> afternoon uu4jlm_Valeryi
[15:45] <uu4jlm_Valeryi> When the estimated ball will fly to the south-east :)
[15:48] <UpuWork> I think both B-27 and B-28 are now down
[15:48] <UpuWork> STS-10 batteries probably dead
[15:49] <UpuWork> SP3OSJ also dead probably
[15:50] <adamgreig> we need like a dashboard
[15:50] <adamgreig> flights and their status
[15:50] <adamgreig> with pretty colours
[15:50] <UpuWork> well I think take /mt as a starting point for tracker v3
[15:50] <adamgreig> lol v3
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[15:50] <adamgreig> yea
[15:50] <UpuWork> well
[15:50] <UpuWork> whatever version it is :)
[15:50] <adamgreig> need to design that at the same kind of time as habitat v2 I think
[15:50] <adamgreig> but yea
[15:51] <adamgreig> oh and while we're at it, the predictor is getting a major overhaul, now's a good time to submit wishlists
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[15:54] <SpeedEvil> scatter - both temporal and chronological in predictions, is an obvious one.
[15:55] <SpeedEvil> Maybe something to try to work out float altitude varying diurnally.
[15:55] <SpeedEvil> And its consequences.
[15:55] <adamgreig> advanced float models would be nice. might focus on support for more pluggable altitude models at first.
[15:56] <SpeedEvil> 'diurnal variation (m)' 'Offset in h (0 is midday peak)
[15:56] <adamgreig> mm maybe
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[15:57] <SpeedEvil> How computationally expensive is computing a days trajectory - if you've got the data?
[15:57] <adamgreig> teeny
[15:57] <SpeedEvil> Are we talking seconds, milliseconds, or microseconds?
[15:57] <adamgreig> and we have the data
[15:57] <adamgreig> hm
[15:57] <adamgreig> between ms and µs
[15:57] <adamgreig> depends if the wind data is in disk cache or still on disk
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[15:58] <adamgreig> the actual computation is forward euler with some high degree interpolation
[15:58] <adamgreig> not hugely taxing
[15:58] <UpuWork> wel bear with me
[15:58] <SpeedEvil> 'do daily runs and tell me if any of the cronological and distance scatter plots land or cross this bbox'
[15:58] <adamgreig> though updating the integration model is also on the list of things to consider
[15:58] <adamgreig> SpeedEvil: we already have the daily run thing via hourly
[15:58] <UpuWork> new server will have enough RAM to load it into RAM
[15:58] <adamgreig> UpuWork: phoar
[15:58] <adamgreig> really?
[15:58] <adamgreig> how much ram?
[15:58] <UpuWork> 32Gb
[15:58] <UpuWork> if you want it
[15:58] <SpeedEvil> :)
[15:59] <adamgreig> is that enough? I can't remember how big it is
[15:59] <UpuWork> and dual Xeons to do what you want with it
[15:59] <UpuWork> I think its 19Gb uncompresed
[15:59] <adamgreig> nice
[15:59] <adamgreig> easy then
[15:59] <UpuWork> Could get away with 24Gb I suspect
[15:59] <adamgreig> gotta run, back later
[15:59] <UpuWork> laters
[15:59] <SpeedEvil> Have fun.
[16:00] <LeoBodnar> UpuWork: thanks for GPS modules, I needed the fix.
[16:01] <UpuWork> lol
[16:01] <UpuWork> welcome
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[16:16] <Hix> whoop Pi NoIR just dropped on my desk :D
[16:17] <DL1SGP2> did it create an impact crater?
[16:17] <Hix> heh
[16:17] <Hix> it's gonna impact this afternoons work output
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[16:18] <DL1SGP2> heh
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[16:33] <Reb-SM3ULC> :)
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[16:45] <Willdude123> Right. Checking the power circuit. How? Should I check each pin's respective header pin and check for continuity?
[16:45] <Willdude123> No shorts on ground and VCC
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[16:50] <eroomde> yes, all of those things
[16:50] <eroomde> then turn it on and meter the output
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[16:58] <Willdude123> I had what I thought might be an interesting project idea today. I thought about making a XOR cipher system implemented with logic gates on a PCB, would be quite interesting to design
[16:59] <ibanezmatt13> sounds cool
[17:00] Action: ibanezmatt13 quietly Google's to find out what that actually is :P
[17:01] Action: Willdude123 quitely points out the apostrophe was in it's wrong place. Its silly when people put apostrophe's when they aren't required
[17:01] <Hix> how easy is it to automate the download of a series of jpegs from a list of sequential numbers? no ftp access
[17:02] <jedas> bash + wget should do it
[17:03] <Hix> what would I wget though, would I point it at a list of addresses?
[17:04] <jedas> do you have http access ?
[17:04] <LeoBodnar> awk
[17:04] <Hix> I have http
[17:04] <jedas> http://www.cyberciti.biz/faq/bash-for-loop/
[17:04] <Hix> ta
[17:04] <jedas> just put wget inside that loop
[17:05] <jedas> i mean, a link as argument which is loop's variable
[17:05] <Hix> yes, gotcha. thanks
[17:05] <eroomde> or even in a more parallel way with xargs
[17:07] <eroomde> cat list_of_urls | xargs -I {} wget {}
[17:08] <eroomde> actually probably just
[17:08] <eroomde> cat list | xargs wget
[17:08] <Hix> cool - I'll try this over the weekend when I finally get fibre
[17:08] <Hix> cheers gents
[17:10] <Hix> right time to get out of work and play with some infra red mullarkey. Bye
[17:10] <x-f> Hix, http://tinyapps.org/blog/nix/201109120730_wget_curl_sequence.html
[17:11] <Hix> thx
[17:11] <eroomde> oh that's cool
[17:12] <eroomde> if the URLs are nicely structured
[17:12] <eroomde> the example URLs given are suitably obsessive
[17:13] <Hix> thats the ticket x-f
[17:13] <Hix> right queued up and off I go. laters peeps
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[17:21] <mfa298> reading back 10 mins I think you can even tell wget to get the list of urls from a file (-i maybe)
[17:23] Action: mfa298 has just bought a hobbycraft box, although it looks like it's about 2mm too small for a pi unless you remove the USB header.
[17:24] Action: mfa298 is also considering a trip to Wickes/B&Q to reverse the effect of all that arty farty stuff, it's scary :p
[17:24] <Laurenceb> anyone here familiar with windows print servers runnign samba from linux?
[17:24] <Laurenceb> i dont have a clue what im doing
[17:24] <mfa298> Laurenceb: as in the print server is running on Linux/Samba trying to offer print services to windows ?
[17:25] <Laurenceb> no
[17:25] <Laurenceb> the other way around
[17:25] <Laurenceb> i keep getting asked for password authentication all the time
[17:25] <Laurenceb> really annoying
[17:25] <mfa298> Linux client, windows server then. should be fairly easy to make work
[17:25] <Laurenceb> apparently some issue with smb conf
[17:25] <mfa298> I'm not sure you need samba in there, I think you can probably do it all with CUPS
[17:25] <Laurenceb> but it looks ok to me
[17:25] <Laurenceb> oh
[17:26] <Laurenceb> http://ubuntuforums.org/showthread.php?t=1599298
[17:26] Nick change: KipK -> KipK_away
[17:26] <SP3OSJ> 15.11.2013 um 22:00 Uhr GMT Start SP3OSJ. Es ist ein interessantes Layout: http://s24.postimg.org/vsmadrcrp/image.gif
[17:26] <Laurenceb> i tried that fix, but no luck
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[17:27] <Laurenceb> http://pastebin.com/pcJSMtvd
[17:27] <Laurenceb> my smb conf
[17:27] <mfa298> as far as I'm aware you'de only use samba to share a printer on a linux machine for windows clients to connect to it.
[17:27] <arko> LeoBodnar: interesting experiment with painting the bottom black for earth IR coupling
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[17:30] <mfa298> Laurenceb: that config looks like it's for sharing a local printer with other machines on the network.
[17:30] <Laurenceb> hmf
[17:30] <mfa298> I think CUPS is probably the place to look if you're wanting to set the linux machine as a client.
[17:30] <Laurenceb> i had this problem a year or two ago
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[17:30] <Laurenceb> but i forgot the solution
[17:30] <Laurenceb> i had to edit a config file somewhere....
[17:30] <Laurenceb> ok, where is the cups config?
[17:31] <PE0SAT> Laurenceb: Cups has a web interface, but default only accepts connections from localhost
[17:31] <Laurenceb> ok
[17:32] <mfa298> not sure I'm not a ubuntu user and it's been a while since I've used cups. At a guess it would be /etc/cups* or the web interface which runs on something like :981
[17:32] <Laurenceb> but isnt there a conf file for it?
[17:32] <Laurenceb> ok
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[17:33] <PE0SAT> Laurenceb: http://en.wikipedia.org/wiki/CUPS#CUPS_web-based_administration_interface
[17:33] <Laurenceb> yeah ive been using the gnome tool
[17:33] <mclane> SP3OSJ: what will be the flight parameters (frequency, modulation etc)?
[17:33] <Laurenceb> but someth9ing is clearly wrong
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[17:36] <Laurenceb> ah fixed it, thanks
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[17:42] <bertrik> is it practically possible to aim for a specific float altitude with a pico? and what are the considerations for choosing a float altitude?
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[18:00] <craag> bertrik: There's some graphs you might find interesting here: http://ukhas.org.uk/projects:microballoons:data
[18:00] <craag> (at the bottom)
[18:00] <craag> Consideration is usually just as high as you can get it with a certain payload weight.
[18:02] <bertrik> craag: thanks
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[18:04] <bertrik> but maybe not too high, to avoid freezing, or avoid 10 km to avoid airplanes
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[18:04] <craag> getting picos above 9km is Leo-territory :)
[18:05] <ve6ts> i've always wanted to try a remote controllable gas valve, to control the exact float alt (using any kind of balloon)
[18:05] <ve6ts> i've been unable to design/buy the valve
[18:05] <ve6ts> so far i've tried an irragation valve, doesn't work with gas
[18:06] <craag> steve did some development on something like that
[18:06] <ve6ts> and too heavy
[18:07] <DL7AD> evening
[18:07] <craag> ve6ts: Check out this thread: https://groups.google.com/forum/#!topic/ukhas/riZc6_5wVew
[18:08] <ve6ts> craag thanks i will read
[18:09] <ve6ts> craag ya the ZP is definately in my future, it would be an interesting project for sure
[18:13] <bertrik> craag: I see a lot of picos with quite small free lift, is that just to reduce total mass?
[18:13] <bertrik> or perhaps reduce pressure at float altitude?
[18:13] <craag> bertrik: To reduce the pressure.
[18:14] <craag> That free lift force will act on the balloon envelope at float, so the less force, the less chance of burst :)
[18:14] <bertrik> hm, will have to think a bit how that happens
[18:16] <LeoBodnar> floating altitude of ideal SP balloon does not depend on the free lift (if you ignore extra helium weight)
[18:17] <LeoBodnar> if you don't ignore it then more free lift causes slightly _lower_ floating altitude
[18:17] <LeoBodnar> But real SP balloons are not rigid so it does increase altitude very slightly
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[18:24] <SpeedEvil> Laurenceb: https://connect.arc.nasa.gov/LEARNseminar?launcher=false - Lightweight Supercapacitors with Porous Nanocarbon Platforms
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[18:25] <ve6ts> LeoBodnar on your solar balloons did you use a recharge battery or cap to regulate the power flow?
[18:25] <bertrik> I've been playing a bit with the numbers and as I understand, you need about 1 liter of He for each gram of (payload+free lift), right?
[18:26] <craag> bertrik: Yep
[18:27] <craag> and the weight of the balloon too.
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[18:29] <craag> hang on
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[18:30] <craag> Nope that's not right.
[18:30] <bertrik> craag, then I don't really understand the numbers in the table on the microballoons page. For example, B-12 was a 92 diameter balloon filled to 50%, but that would be about 200g lift, while the payload+free lift was only 12g. Or is the balloon itself quite heavy?
[18:30] <craag> sorry, getting confused with units.
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[18:33] <craag> bertrik: Did you work that out assuming a spherical balloon?
[18:33] <bertrik> yes
[18:34] <craag> We tend to measure the amount of helium by it's lift, easier than by volume.
[18:34] <craag> The foil balloons aren't spherical :)
[18:34] <craag> and I'm not sure how accurate the '50%' figure is.
[18:36] <craag> The 92cm foil balloons are about 37g iirc.
[18:38] <bertrik> oh wow, that's quite a lot compared to the payload itself, didn't realise that :)
[18:38] <craag> Well, compared to Leo's payloads :P
[18:40] <LeoBodnar> 50% relates to "final envelope volume" which is moving target as foil material stretches under superpressure and supertemperature - both elastically and plastically
[18:40] <craag> yep that's what I thought :)
[18:40] <LeoBodnar> so it does not make much sense apart from "rough estimate"
[18:41] <LeoBodnar> I am just filling the columns that are already there in the table
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[18:47] <bertrik> does the "typical" 36 inch qualatex used in picos always look like a flattened sphere, ? or is it more like a sphere?
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[18:49] <bertrik> ok sorry, should have searched better, this one http://randomsolutions.co.uk/Random_Aerospace/Balloons_files/Silver36inFoilBalloon.jpg
[18:49] <LeoBodnar> http://www.youtube.com/watch?v=hr6x3r8phvE
[18:51] <LeoBodnar> It's made from two flat disks of the foil welded together.
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[18:54] <JamesH_> hi guys
[18:54] <bertrik> oh, I somehow assumed that 36 inch spherical foil balloon existed
[18:54] <craag> It's difficult to make curved foil.
[18:54] <JamesH_> what radio reciever would you recommend, from the wiki, for a pi balloon?
[18:54] <JamesH_> already got a ntx2
[18:54] <craag> Hi JamesH_
[18:55] <LeoBodnar> I wish it did bertrik
[18:55] <craag> You'll need a radio receiver capable of SSB on 434MHz, such as a handheld scanner.
[18:55] <craag> Or an RTL-SDR usb dongle that works with software on a laptop.
[18:55] <JamesH_> second option i think
[18:55] <JamesH_> such as?
[18:56] <LeoBodnar> inflated size is about 70cm
[18:56] <craag> For the usb dongle there are rtl-sdrs that are v cheap.
[18:56] <LeoBodnar> dia
[18:56] <craag> JamesH_: https://www.cosycave.co.uk/product.php?id_product=288
[18:56] <craag> Bear in mind theey won't be as good performance as a real radio.
[18:56] <JamesH_> cheapness isn't too much of an issue - we got a grant from RS :D
[18:56] <craag> But a lot cheaper!
[18:57] <craag> haha oh wow
[18:57] <craag> Maybe go for a Funcube Dongle then.
[18:57] <craag> It's a lot more pricey, and still requires the laptop software, but is better than some real radios.
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[18:58] <craag> http://www.funcubedongle.com/?page_id=1073
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[18:59] <JamesH_> that does the recieving aswell doesn't it?
[18:59] <x-f> what does "PEP" stand for? as in "Transponder payloads where power levels may be up to 1 Watt PEP"
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[19:00] <craag> x-f: Peak Emitted Power
[19:00] <craag> JamesH_: Yes.
[19:00] <x-f> thanks, craag
[19:00] <JamesH_> thanks
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[19:00] <craag> You'll use an antenna with it, and then feed the audio into dl-fldigi to decode the telemetry.
[19:01] <mattbrejza> fairly sure PEP = peak envelope power
[19:02] <mattbrejza> but w/e same meaning more or less
[19:02] <craag> Yeah darn, http://en.wikipedia.org/wiki/Peak_envelope_power
[19:02] <craag> Eagle is killing the brain, gonna take a break and get some food :)
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[19:34] <SpeedEvil> Just watched a thing on growing nanotubes on carbon fibre.
[19:34] <SpeedEvil> Total process: Wash cloth overnight in acetone. Dry. Dip in toluene/ferrocene. Dry. Microwavefor 45s.
[19:34] <LeoBodnar> Laurenceb yahoo!
[19:34] <SpeedEvil> Nuts.
[19:35] <LeoBodnar> So does it stay over the fibre?
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[19:36] <SpeedEvil> yes.
[19:37] <SpeedEvil> It goes from looking like bars of - well - carbon to wool.
[19:37] <SpeedEvil> With obvious improvements in the wettability
[19:38] <SpeedEvil> http://nari.arc.nasa.gov/LEARNseminar2013
[19:38] <SpeedEvil> Twice the inter-layer peel strength. The archived talk should be up tomorrow
[19:38] <LeoBodnar> Silly easy
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[19:39] <LeoBodnar> I watched the middle of it including your Q
[19:41] <SpeedEvil> I'd actually think for CF - passing over a couple of conductive rollers might be easier
[19:41] <SpeedEvil> If the RF does not play a role.
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[19:45] <LeoBodnar> so what happens if you then make a composite component out of it?
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[19:46] <LeoBodnar> SpeedEvil: I want to forward the nanotube growth video to a friend, is there a simple link to a video or textual process description?
[19:48] <SpeedEvil> Not yet
[19:49] <SpeedEvil> Typically the videos pop up on that index page after a few dasy
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[19:49] <SpeedEvil> http://nexsci.caltech.edu/conferences/KeplerII/agenda.shtml - for example
[19:50] <SpeedEvil> This ended on the 8th andthey've got most up
[19:54] <LeoBodnar> cheers will keep an eye on it
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[20:07] <mclane> mfa298: I have tried your DomEX code - works nice
[20:07] <mclane> on the pi
[20:08] <mclane> however, I do not grow a beard
[20:08] <mclane> I have already one
[20:08] <mclane> ;-)
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[20:10] <ve6ts> mclane what battery do you intend on powering your pi?
[20:17] <Willdude123_> Anyone know of any awesome cloud services to do my IT hw on?
[20:17] <arko> google?
[20:17] <Willdude123_> (my IT homework is about cloud computing services.)
[20:17] <arko> oh
[20:18] <arko> OTOY
[20:18] <mattbrejza> github
[20:18] <Willdude123_> Hmm
[20:18] <ve6ts> oh, hw = homework, i thought it was hardware and was confussed
[20:18] <arko> they are up and coming
[20:18] <arko> and epic
[20:18] <Willdude123_> Github/ I was thinking DigitalOcean maybe
[20:18] <ve6ts> i second google
[20:18] <arko> http://www.youtube.com/watch?v=TSrORhFUlPU
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[20:20] <Willdude123_> Octane sounds complicated.
[20:20] <Willdude123_> Hmm
[20:20] <Willdude123_> Github wins
[20:20] <Willdude123_> I think
[20:21] <arko> wait wait
[20:21] <arko> is your homework on talking about cloud services or are you looking for a cloud servies to do your hmework on?
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[20:26] <Willdude123_> The former
[20:27] <LeoBodnar> arko: what were your cold soak test results?
[20:28] <Willdude123_> https://docs.google.com/forms/d/1vH6-3MnmU8eLnWpKBHfCJL73Q0bMJxuyqeji6XA5WJQ/viewform
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[20:34] <mfa298> mclane: the naming is based on the comments on the wiki about sandals and beards :D
[20:35] <mfa298> although I'm currently hating throughhole and tri pad boards (trying to put components on a humblepi board)
[20:36] <mfa298> hmmm, this isn't a good sign - no sign of data from the ntx2 after the soldering :(
[20:37] <craag> I'm currently trying to work out if I can do anything more exciting than just ssdv with this pi.. any ideas?
[20:38] <mfa298> well I've got dominoex code that seems to work
[20:38] <craag> ooo
[20:38] <craag> :D
[20:38] <mfa298> apart from no signal from the ntx2 on a humble pi board
[20:38] <craag> Using PWM?
[20:38] <craag> ah :(
[20:38] <mfa298> yep pwm
[20:39] <ve6ts> craag what is more exciting then ssdv?
[20:40] <craag> ve6ts: Well it's been done before, a lot.
[20:40] <mfa298> ah, wire link missing for the enable pin, that might explain the lack of anything
[20:40] <craag> And the pi is capable of so much more :)
[20:41] <ve6ts> craag i see, something new, i'm looking for ideas as well
[20:41] <LeoBodnar> When I sat an advanced test at RSGB convention there was a guy there with a massive beard, pot belly and wearing the sandals. He was going on how easy it will be for him to pass.
[20:41] <bertrik> apparently you can do broadcast FM by modulating a PLL on the pi
[20:41] <mfa298> I wonder if you could get sstv working from a pi, presumably by putting the audio into something like an ntx2
[20:42] <LeoBodnar> I did not believe what I saw considering it was raining all weekend
[20:42] <craag> bertrik: Yeah, a friend of mine used it to really spook out his housemate while he was doing washing up late at night listening to the radio!
[20:42] <craag> mfa298: Ah... yes..
[20:42] <mclane> ve6ts: not decided yet
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[20:45] <mclane> ve6ts: probably 2xAA energizer ultimate plus stepup to 5 V
[20:45] <ve6ts> mclane cool; what is your draw?
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[20:46] <mclane> I have not measured yet
[20:46] <mclane> I use a model a
[20:46] <Reb-SM3ULC> bertrik: its good fun to play with. did some morse transmissions with
[20:46] <Reb-SM3ULC> bertrik: Have you seen the WSPR-code for the pi?
[20:46] <Willdude123_> http://pastebin.com/WwBgQVbU
[20:46] <Willdude123_> ^hows that?
[20:47] <bertrik> Reb-SM3ULC: no, but sounds like a cool application
[20:48] <Reb-SM3ULC> bertrik: https://github.com/threeme3/WsprryPi
[20:48] <mclane> just succeeded to get domex working
[20:48] <craag> mfa298: I might give this a go https://github.com/hsbp/rpi-sstv
[20:48] <mclane> on a pi with NTX2b
[20:48] <bertrik> nice
[20:48] <mclane> and ssdv also
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[20:49] <craag> Should be easy to run side-by-side with ssdv, and will give people with FM rxes something to do!
[20:49] <mclane> (but with 600 baud standard rttty
[20:51] <mfa298> mclane: is that using my sandals code pretty much as is ?
[20:51] <ve6ts> woohoo, my sdr's are here!
[20:52] <mclane> mfa298: yes
[20:52] <craag> Hmm I take it that ssdv over dominoex isn't possible..
[20:52] <mfa298> woohoo, added the missing link and I can now see rtty from the soldered board, just ntx2b and gps to go
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[20:53] <mfa298> craag: I think it might be possible - it looks like the primary character set covers all of the ascii character set, but we might want something faster than DominoEX16
[20:53] <mclane> I have just added the code tables from the wiki (ukhas.org.uk/guides:rfm22b)
[20:54] <mfa298> I didn't see that, I just grabbed the file from dl-fldigi (which I think that one is as well)
[20:55] <mfa298> mclane: if you've not pulled in the last few hours I pushed updates with a DominoEX class in my code.
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[20:55] <bertrik> you can use flite to speak the telemetry string and send that as fm :)
[20:55] <bertrik> like a number station
[20:56] <mfa298> someone should do that, but use /dev/random to generate the spoken data :)
[20:56] <craag> haha bertrik
[21:00] <mclane> I am using the c version
[21:01] <LeoBodnar> Is analogue audio allowed on 434 ISM?
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[21:02] <craag> Hmm good point
[21:02] <LeoBodnar> Tempting now
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[21:03] <craag> "Analogue audio
[21:03] <craag> applications other
[21:03] <craag> than voice /
[21:03] <craag> speech are
[21:03] <craag> excluded.
[21:03] <LeoBodnar> Use geofencing and TX prerecorded messages for different countries. Current OS X has lovely set of local accents.
[21:04] <craag> haha
[21:06] <Willdude123_> I did some IT homework on Git, is there much I haven't mentioned? https://docs.google.com/file/d/0B2ki41-zdyfBUE43VEx6Ukg2R28/edit?usp=drive_web (it was to write about a "cloud" service)
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[21:12] <fsphil> craag: nbtv :)
[21:13] <craag> by nbtv you mean?
[21:13] <fsphil> narrow band tv
[21:13] <fsphil> 12.5 fps very low resolution video
[21:13] <craag> yeah, slow scan or fast scan
[21:13] <craag> ah fast
[21:14] <fsphil> fast but just really small
[21:14] <craag> so ssdv @30x50 pixels :)
[21:14] <fsphil> even at that resolution ssdv is too slow
[21:14] <fsphil> nbtv is all analogue
[21:15] <craag> jsut reading it up on it now..
[21:17] <mfa298> come on gps, get a lock, you know you want to...
[21:19] <daveake> You'd think so :p
[21:21] <mfa298> especially as it's been moved from a breadboard onto something that can take solder.
[21:29] <daveake> yeah you'd think it would appreciate that move
[21:31] <mfa298> as a downside it does mean the gps is closer to the pi so it might have more rf noise
[21:31] <Willdude123_> Everyone pray to your Gods that mfa298's GPS will get lock. Hopefully that will influence it
[21:32] <mfa298> meh, well I can see strings on the console so I'll power off and add the ntx2b
[21:32] <mfa298> it can get a lock later
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[21:34] <Willdude123_> Soldered the header onto my board now
[21:34] <Willdude123_> I could test it in fact,
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[21:34] <Willdude123_> See if the NTX2 powers up and transmits
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[21:36] <arko> LeoBodnar: sorry?
[21:36] <arko> cold soak?
[21:39] <LeoBodnar> If you are on Mac OS X try this
[21:39] <LeoBodnar> awk 'BEGIN{ while(1){i=int(10*rand);if(!(++k%6))i="[[slnc 900]]";system("say "i)}}'
[21:45] <Reb-SM3ULC> mm, light smoke is coming out in the back...
[21:47] <Reb-SM3ULC> worked fine :)
[21:47] <LeoBodnar> Not the most elegant way but works!
[21:49] <LeoBodnar> This is how it sounds here: http://leobodnar.com/balloons/files/numbers.wav
[21:51] <arko> OMG
[21:51] <arko> make an numberstation!
[21:51] <arko> http://www.youtube.com/watch?v=Ua94OV9Ter8
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[22:13] <fsphil> I've not heard a numbers station on HF in years
[22:14] <arko> that'd be a cool project
[22:15] <arko> hook up a voice generator to a radio
[22:15] <LeoBodnar> I have just tried German voice
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[22:15] <fsphil> nah, get the voice of Holly from red dwarf
[22:15] <arko> hahaha
[22:15] <arko> are there still numberstations?
[22:15] <fsphil> "53.005303, 503535 .. look to be honest we're lost"
[22:16] <arko> lol
[22:16] <daveake> lol
[22:16] <LeoBodnar> I am sure there are still some left
[22:17] <LeoBodnar> By shutting them down you can reveal too much information to counter-intelligence
[22:17] <arko> heh
[22:18] <Willdude123_> Numbers stations scare me
[22:18] <arko> haha, hearing them live is scarier
[22:18] <arko> but its not really
[22:18] <fsphil> just a computer somewhere
[22:19] <arko> its cool imo
[22:19] <bertrik> there was (finally) some kind of speech on UVB-76 (aka "the buzzer") a few months ago
[22:19] <arko> oh no way
[22:19] <fsphil> it seems to do that occasionally
[22:20] <fsphil> I've yet to hear anything but the buzzing
[22:20] <arko> its just some hacker in his parents basement
[22:20] <arko> eating hot pockets and thinking "this should mess with them..."
[22:21] <Willdude123_> http://www.spynumbers.com/numbersDB/dbOnAirNow.php3 might get my radio to scan through all these
[22:21] <Willdude123_> Be interesting to hear them
[22:21] <Willdude123_> But they scare the fuck out of me
[22:22] <arko> language please
[22:23] <Willdude123_> Sorry.
[22:23] <fsphil> I have just one thing to say to that... five nine five six eight three zero zero one
[22:23] <Willdude123_> Stahp
[22:23] <Willdude123_> You are scaring me
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[22:23] <arko> one one zero one zero zero two...
[22:23] <fsphil> noo, not the two!
[22:23] <arko> http://www.youtube.com/watch?v=4rrLkF2zM2c
[22:24] <arko> ah wrong one
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[22:24] <fsphil> lol, I know the one you're after
[22:24] <arko> nvm, its the episode where bender dreams a two in binary
[22:24] <Willdude123_> It just scares me
[22:24] <Willdude123_> A lot
[22:24] <fsphil> it's ok, there's no such thing as a two
[22:25] <arko> lol
[22:25] <fsphil> love futurama
[22:25] <arko> maybe this whole time its been some dude trying to get a girl to call him back
[22:25] <arko> and he just kept changing his phone number
[22:26] <arko> same here
[22:26] <arko> old episodes were great
[22:28] <Willdude123_> If I ran North Korea, I'd jam a load of numbers stations, just to see what it does to espionage "It doesn't exist but can you stop jamming it please?" Oh wait. I think North Korea are a bit homophobic, not going there or running it, they'd hate me
[22:28] <Willdude123_> Wow. Just found out North Korea actually has elections
[22:29] <mattbrejza> "elections"
[22:30] <Willdude123_> Oh, all three parties are pretty much the same
[22:32] <LeoBodnar> Do they have sound "L" in the alphabet? Japanese don't
[22:32] <LeoBodnar> I can imagine "elections" creates confusion for Japanese students of English language.
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[22:34] <LeoBodnar> Since it is a normal practice to replace "L" with "R" in adopted words.
[22:35] <arko> hehehe
[22:35] <arko> nsfw langauge example here http://www.youtube.com/watch?v=4zAJHG3jbng
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[22:37] <fsphil> I think I'm going to have Pepsi from now on
[22:38] <arko> haha
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[22:41] <LeoBodnar> arko you said you have managed to kill something in the freezing chamber test
[22:41] <arko> yes
[22:41] <arko> AAA enegizer at -56C ish if i remember correctly
[22:41] <LeoBodnar> What was that?
[22:41] <arko> err
[22:41] <arko> sorry, AA
[22:42] <arko> i thought it was a crystal
[22:42] <arko> turned out it was the battery
[22:42] <arko> i really should have written this down :/
[22:42] <LeoBodnar> I have attempted to float at 13km and payload dropped to -59C inside the transmitter, so other components were probably even colder
[22:42] <arko> oh wow
[22:43] <arko> it operated at -59C?
[22:43] <arko> or failed?
[22:43] <LeoBodnar> Yes all worked but TCXO started to drift a lot
[22:43] <arko> ahh
[22:44] <WillTablet> Does anyone think this idea might be plausible? I thought about making a PCB with buttons for each letter of the alphabet that would each trigger the appropriate binary digits for them to set, then have them go through a xor gate for encryption and then have a decoding end.
[22:44] <LeoBodnar> I think outside the compensated range the compensation mechanism (digital or analogue) goes haywire
[22:44] <arko> i noticed variation in vcc also make the txco go unstable
[22:44] <WillTablet> I'm trying to think exactly how I could do it
[22:44] <LeoBodnar> BUt it worked still
[22:44] <arko> yeah, one issue i had with testing was figuring out if it was the crystal dying or the battery
[22:45] <LeoBodnar> Battery voltage dropped to 1.31v
[22:45] <arko> so i put a voltmeter on the battery and ran it down to -56c and the voltage dropped off
[22:45] <arko> ohh
[22:45] <LeoBodnar> Then it burst and came down
[22:45] <arko> ah!!!
[22:45] <arko> lame!
[22:45] <WillTablet> I think there are a few challenges to it, and I'm not too sure exactly how I'd do it
[22:45] <LeoBodnar> well it was a cowboyish attempt
[22:46] <LeoBodnar> It's completely new level for me
[22:46] <LeoBodnar> heh
[22:46] <arko> hmmm
[22:46] <arko> you dont have a vcc reading no?
[22:46] <arko> perhaps the power reg going unstable?
[22:46] <arko> that can make the txco go wacko too
[22:47] <arko> (im just playing devils advocate here)
[22:47] <arko> sounds like the txco not able to handle the cold though
[22:47] <LeoBodnar> I might turn it back on again. It was 2.00V +- 10mV before so I turned it off. It was called "Main Bus B"
[22:48] <arko> ohhh
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[22:48] <arko> good thing it didnt undervolt :P
[22:48] <LeoBodnar> My theory is that their calibration/compensation table does not extend to these ranges so they just let it go wild
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[22:48] <LeoBodnar> :D
[22:49] <arko> hmm
[22:49] <LeoBodnar> So quite possibly stability sort of falls off the cliff
[22:49] <arko> it's digital?
[22:49] <arko> i thought they were analog
[22:49] <arko> and some sort of loop with a temp compensation
[22:49] <LeoBodnar> Did you know that low ppm crystals usually have worse drift outside spec range?
[22:49] <LeoBodnar> than "avreage" 50ppm ones
[22:50] <arko> really?
[22:51] <LeoBodnar> It's a numbers game so they are attempting to squeeze the flattest section of the curve into the operational range and that usually means that outside it's horrible
[22:51] <arko> i didn't know
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[22:53] <LeoBodnar> It's like second and third degree polynomial functions. Within certain bounds 3rd degree can be made "flatter" but outside it gets much worse than 2nd degree
[22:56] <chrisstubbs> Oh wow, predictions actually look good for this weekend!
[22:57] Nick change: KipK_away -> KipK
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[22:59] <LeoBodnar> For floating?
[22:59] <chrisstubbs> Nah bursty recovery pico testing
[23:00] <chrisstubbs> been waiting until I had a prediction of it landing the other side of town so i can pick it up again
[23:00] <LeoBodnar> ah
[23:01] <chrisstubbs> on one of the 100g <2m pawans
[23:01] <chrisstubbs> I wonder if it would be possible to float latex that small with say a 30/40g tracker?
[23:01] <LeoBodnar> I suspect yes
[23:01] <chrisstubbs> May well give that a go soon then
[23:01] <LeoBodnar> But I know nothing about latex
[23:02] <LeoBodnar> He?
[23:02] <chrisstubbs> yeah
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[23:02] <LeoBodnar> I really want to see a simple diffusion estimation.
[23:03] <LeoBodnar> Rule of thumb-y thing. Like "100g pawan loses 0.2g of free lift per hour" etc
[23:03] <chrisstubbs> I gues it would vary a lot on how well it was sealed
[23:03] <LeoBodnar> I am surprised people flying latex ones have not compiled this somewhere
[23:04] <LeoBodnar> Aren't most sealed with few cable ties?
[23:04] <chrisstubbs> What was the story on your home made foil btw
[23:04] <chrisstubbs> yeah, more than 1 helps
[23:04] <fsphil> people have managed to float at 100g hwoyee
[23:04] <chrisstubbs> as i found out :P
[23:05] <fsphil> at/a
[23:05] <chrisstubbs> fsphil, ah yeah i think Darkside may have
[23:05] <LeoBodnar> make good seams next time and less free lift
[23:05] <fsphil> yea
[23:05] <LeoBodnar> it was rocketing up at 3m/s at one stage
[23:05] <LeoBodnar> since it was shaped like a sausage
[23:05] <LeoBodnar> or even a long pillow
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[23:06] <LeoBodnar> oh, "story", I read as "lesson"
[23:07] <chrisstubbs> Aha well it seemed to work for a first go
[23:07] <chrisstubbs> it went up :)
[23:08] <LeoBodnar> yeah, but burst prematurely just like yours did
[23:08] <chrisstubbs> and this was just melting 2 sheets of mylar together with an iron?
[23:08] <LeoBodnar> yeah
[23:08] <chrisstubbs> coool
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[23:09] <LeoBodnar> Qualatex is doing a very good job at making these 36" ones
[23:10] <chrisstubbs> its like you need a well sealed thin envelope for the lift gas, then something stronger around the outside to stop it bursting. Like a innertube and tyre
[23:10] <arko> has anyone floated with the 100g's?
[23:10] <arko> i just bought 5 :P
[23:10] <arko> err they just arrived
[23:10] <Reb-SM3ULC> LeoBodnar: what was the targetheight for the sausage?
[23:10] <chrisstubbs> arko i might try next week
[23:10] <eroomde_> we bought a continuous seam welder for our ZPs
[23:10] <arko> sweeettt
[23:10] <arko> take data
[23:11] <LeoBodnar> 13km Reb-SM3ULC
[23:11] <LeoBodnar> 13,020m
[23:11] <eroomde_> it was nice, but it seems like the complicated bit is the join at the top and bottom, for which a seam welder doesn't much hhelp
[23:11] <chrisstubbs> will do, anything special you want to know arko?
[23:11] <LeoBodnar> It has reached 12,967m
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[23:12] <Reb-SM3ULC> LeoBodnar: pretty close then? :)
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[23:12] <LeoBodnar> You are still doing balloons Ed?
[23:12] <LeoBodnar> It started levelling off and burst
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[23:13] <eroomde_> nope
[23:13] <LeoBodnar> Would make a lovely beautiful ZP but I want SP
[23:14] <LeoBodnar> Do you have a link to the welding thing?
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[23:15] <LeoBodnar> Yeah, old story of flattening the curvy shape
[23:15] <eroomde_> no, this was all like 2007
[23:15] <eroomde_> beyond the scope of my memory
[23:15] <LeoBodnar> Foil is slightly stretchy but often it impedes the work rather than helps it
[23:16] <eroomde_> however the bearing did have a sticker advising you to 'adopt butter regularly'
[23:16] <LeoBodnar> lol I catch the drift
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[23:23] <chrisstubbs> im off, laters!
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[23:28] <WillTablet> Can you buy xor gates or do you have to construct them yourself?
[23:29] <WillTablet> Thanks
[23:29] <eroomde_> but consider a CPLD or small FPGA first
[23:29] <eroomde_> for your crypto engine
[23:30] <LeoBodnar> 74LS86
[23:30] <WillTablet> Right. Will think about it
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[23:30] <LeoBodnar> 74 series is so humane - almost analogue
[23:31] <arko> i remember my first electronics project was a tv jammer with a 7404 hex inverter
[23:31] <eroomde_> very analogue with a sufficiently poor pcb layout
[23:31] <arko> and a fancy cap
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[23:32] <WillTablet> Hmm, this might prove to be quite a challenging project
[23:33] <WillTablet> Not sure if it's a good idea for one but it sounds quite challenging and that's what makes it rewarding
[23:33] <arko> thats the best thing
[23:33] <eroomde_> hardware logic design is fun though
[23:33] <eroomde_> work up to it
[23:33] <arko> do an ALU first
[23:33] <arko> what eroomde_ just said :P
[23:33] <eroomde_> do that ^
[23:37] <WillTablet> Interesting
[23:39] <WillTablet> Seems there aren't actual lectures, just notes
[23:39] <eroomde_> it's a book mostly
[23:39] <eroomde_> well writeen
[23:41] <WillTablet> An right.
[23:41] <arko> http://theoatmeal.com/blog/fix_computer
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[23:44] <WillTablet> Would be cool to see a cipher working on a PCB.
[23:46] <WillTablet> Seems not all chapters available as pdf :-(
[23:47] Action: mfa298 suspects a 7400 based crypto engine might be somewhat large
[23:48] <WillTablet> Oh btw eroomde I started reading the fall
[23:48] <WillTablet> It's a pretty good book, thus far.
[23:50] <WillTablet> Book too expensive, might get at chridtmad
[23:50] <WillTablet> *Christmas
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[23:52] Action: WillTablet just remembers the 'boobs I wank' typo
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[00:00] --- Thu Nov 14 2013