highaltitude.log.20140531

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[00:19] <Willmod> hello
[00:20] <amell> hey. did you recover ok? any pictures?
[00:21] <Willmod> Hey amel. Yes! Just getting some up now. Great butst photo and one of the parachute. AND.....one of the farmer that found t with his shotgun....
[00:22] <amell> hopefully he did not discharge at you&
[00:23] <Willmod> No, but seemed to want some sort of recompense. Didnt want to argue with him though...
[00:23] <Willmod> https://lh4.googleusercontent.com/-hg4byfrECys/U4ka5dU8GDI/AAAAAAAABgw/5KCth9iAUDg/w1044-h476-no/Screenshot+%2528123%2529.png
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[00:24] <amell> farmers always seem to want money
[00:24] <Willmod> https://lh5.googleusercontent.com/-NLfTglh4Aek/U4ka4z8qUoI/AAAAAAAABgs/ZBi0qP9Q0l0/w1044-h475-no/Screenshot+%2528122%2529.png
[00:24] <amell> like they dont get enough from the EU...
[00:25] <amell> interesting format, what camera is this?
[00:25] <Willmod> Really? I can imagine. He was just walking about. Must have brightened up his day to talk about watching something fall out of the sky
[00:26] <Willmod> Gopro, but ice cropped using my mouse, to no particular scale...
[00:26] <amell> puzzled why the chute appears to be below the payload in that last one
[00:28] <Willmod> I see what you mean. And its inflated too, which does't really make sense. Out payload wasnt particularly dense but thats ridiculous
[00:29] <amell> was there much left of the balloon?
[00:29] <Willmod> No, just the "stalk"
[00:30] <Willmod> It went up at a fair pace with 5kgs of lift
[00:30] <amell> inertial effect? :)
[00:31] <Willmod> It was what call "boinging" upwards at a decent frequency
[00:32] <Willmod> It was what I call "boinging" upwards at a decent frequency
[00:33] <Willmod> Must make effort to type more carefully on IRC. I am normally excited/short on time, but it reads like an 8 year old
[00:34] <lz1dev> Willmod: wait... why is the chute tehre?
[00:35] <amell> the only possible thing i can think of is that the chute is heavier than the payload.
[00:36] <lz1dev> looks detached from camera
[00:36] <Willmod> That cant be true. If we have been involved in re-writing the rules of physics, im giving up the day job :-)
[00:37] <Willmod> let me take another screengrab. i'll be 2 mins
[00:38] <amell> momentum imparted by the burst? was chute tied close to the neck
[00:40] <Willmod> just reviewing and that's what it looks like. The burst was quite violent
[00:41] <Willmod> we tied about 3m from the neck. Is that considered close?
[00:41] <fsphil> post-burst is odd. things are just floating about for a bit
[00:43] <amell> 3m away seems about par from the course for the HABs i have seen
[00:43] <Willmod> Im just youtubing it now. Should be ready in 5 mins
[00:43] <amell> excellent
[00:47] <lz1dev> btw, has anyone tried to calculate position from TLEs?
[00:47] <fsphil> I normally use 10m of cord, and put the chute 1/3 of the way down from the balloon
[00:50] <Willmod> Ok, thats pretty much what we did. It does look like the effec of burst. GoPro is taking ages to render so here is a video from my laptop
[00:50] <Willmod> http://www.youtube.com/watch?v=GGJjY2F2XXg
[00:51] <amell> yeah, i think its burst momentum
[00:52] <Willmod> I had a tethered one burst on me on the ground a while back. was quite a blast
[00:53] <amell> hopefully not hydrogen
[00:54] <Willmod> :-) no. Expensive but safe He
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[05:20] <ProSpectre> mornins gents
[05:20] <ProSpectre> any balloons planed for today?
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[05:30] <ProSpectre> lookin for a place (online) to buy a foil balloon. like the ones used by scientists.
[05:30] <ProSpectre> any ideas?
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[06:47] <sp2ipt> ProSpectre: SP3OSJ is floating with fm repeater atm
[06:50] <ProSpectre> ok
[06:58] <Upu> the large ones a incredibly expensive
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[07:03] <sp2ipt> something's wrong - there's no data from osj tracker from aprs to habitat
[07:03] <ProSpectre> really? damn. I was thinking to use one of them for a really long flight. high altitude isn't the goal, but a long flight, for this project. are there any alternatives? (balloonwise.
[07:06] <Upu> 36" foil party balloons but you need to make a very light weight tracker
[07:07] <ProSpectre> like what weight?
[07:08] <Upu> <25g
[07:08] <ProSpectre> oohh
[07:09] <ProSpectre> and when you say those large ones are expensive. what are we talkin about?
[07:09] <Upu> they won't sell you one
[07:09] <ProSpectre> :(
[07:09] <Upu> http://ravenaerostar.com/solutions/aerospace/product-overview
[07:10] <ProSpectre> jezzus. that is a balloon
[07:10] <ProSpectre> :D
[07:12] <ProSpectre> I thought of carrying like 2 kg. not a carsized load :D. but for a loang range. looks like I'll have to rethink this.
[07:12] <Darkside> you need some pretty serious permissions to be able to launch those
[07:13] <ProSpectre> hmm shows me that I'm a starter in this hobby
[07:13] <ProSpectre> much more work to do
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[07:41] <ian__> 110ft
[07:41] <SIbot> In real units: 110 ft = 34 m
[07:41] <ian__> Tnx Sibot
[07:42] <ian__> 7000lbs
[07:42] <SIbot> In real units: 7000 lbs = 3175.1 kg
[07:43] <ian__> 8000lbs
[07:43] <SIbot> In real units: 8000 lbs = 3628.7 kg
[07:44] <LZ1NY> Hi! Anyone experienced in DIY foil balloons?
[07:45] <MightyMik> 4.435 kg
[07:46] <Upu> hi LZ1NY yeah a few people they are quite tricky
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[07:46] <ian__> LeoBodnar is your man. Just looking at the Raven Aerospace blurb from the link above and think that 8000lbs to 34km is a bit of an error - 3 metric tonnes plus? I think that perhaps 80lbs max and that's a significant load.
[07:46] <SIbot> In real units: 8000 lbs = 3628.7 kg
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[07:52] <LZ1NY> Upu Thanks ... I purchased (e-bay) foil balloons...but when arrived - their size was less than expected
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[07:53] <Upu> largest premade one I'm aware of is the Qualatex 36"
[07:54] <LZ1NY> I tried to do it myself... byt first attempt was not so good https://lh4.googleusercontent.com/-KZxUWJFQzME/U4Ifc-nKSuI/AAAAAAAAl_k/H09ip4D3vPQ/s912/IMG_0294.JPG
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[07:54] <LZ1NY> Yes... i expected 36 inch,,,
[07:55] <Upu> that looks reasonable LZ1NY
[07:55] <Upu> round will be less stress
[07:55] <Upu> name
[07:55] <LZ1NY> I will try to seal better...now leakage
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[08:39] <DL7AD> SP3OSJ-12 is on air. it has a U/V transponder on board 437.7/144.7 FM
[08:39] <DL7AD> but i can receive it just barely with my 2m crossdipole
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[08:48] <sp2ipt> DL7AD: it's +20dB on RX but I now 120W is too little to get in :)
[08:49] <sp2ipt> DL7AD: I'm recording audio from rpt
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[08:50] <LeoBodnar> is the purpose talking to humans
[08:50] <LeoBodnar> ?
[08:51] <DL7AD> sp2ipt: okay.... i just use my TH-D72 (5W) with a crossdipole
[08:52] <DL7AD> sp2ipt: could you hear my callsign about 20min ago?
[08:52] <sp2ipt> DL7AD: roght now I have muted the rx, working on 6m :)
[08:52] <sp2ipt> DL7AD: but I can listen
[08:53] <DL7AD> i will try again in 20min
[08:53] <sp2ipt> DL7AD: rr, I'll wait :)
[08:53] <sp2ipt> preparing to go shopping for parts for new 6m antenna :)
[08:53] <DL7AD> LeoBodnar: yes
[08:53] <DL7AD> LeoBodnar: PM
[08:54] <sp2ipt> LeoBodnar: yes, regular FM repeater
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[08:57] <amell> my pawan 100g arrived this morning, i feel deep joy
[08:58] <amell> btw, has anyone used streamers instead of chute for hab?
[08:59] <amell> this is basically a long piece of mylar used to slow the descent.
[09:00] <DL7AD> sp2ipt: i called a fried. he receives it S8. but they are transmitting continuosly that nobody else can use it.
[09:00] <DL7AD> without leaving any breaks
[09:01] <sp2ipt> DL7AD: yes, there should be a break right now
[09:01] <sp2ipt> DL7AD: the repeater is freaking sometimes - ptt goes down, you have to transmit abt 20s to allow it to live again
[09:02] <sp2ipt> DL7AD: OSJ has to go somewhere so there will be more space :)
[09:02] <LZ1NY> How can I check if foil is REALLY mylar?
[09:03] <DL7AD> sp2ipt: space = power
[09:04] <sp2ipt> DL7AD: not really, I was running 120 W now and can't get in
[09:04] <sp2ipt> IMHO the RX is poor
[09:04] <DL7AD> LZ1NY: try to rip it apart. if you're lucy it wont rip apart (then it will be mylar)
[09:04] <LZ1NY> DL7AD Please - Is it mylar foil? http://www.tatonka.com/Produkte/Zubehoer/erste-hilfe/Rettungsdecke/2985
[09:05] <DL7AD> yes it should be. i have them too.
[09:05] <LZ1NY> :-)
[09:06] <DL7AD> LZ1NY: but ive never succeeded to welding them
[09:06] <LZ1NY> :-(
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[09:10] <LZ1NY> I tried to seal with MOMENT glue... need more skills, to make it better ...hi-hi-hi
[09:13] <ike> LZ1NY so you have everything except balloon?
[09:13] <LZ1NY> I want to experiment with foil balloons
[09:13] <LZ1NY> I have also 4 - Pawan CPR 600
[09:14] <LZ1NY> With foil I want to launch micro payload abt. 10 grams
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[09:16] <ike> tomorrow I will send some gipsy kings at town square to sell you some foil balloons
[09:19] <LZ1NY> ike Majpat... vreme za obyad
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[09:23] <ike> viki utre e denq na deteto
[09:23] <ike> ciganite navsqkade shte prodavat baloni
[09:23] <LZ1NY> Baloni ima...no ne sa 36 incha
[09:24] <LZ1NY> Imam njakolko , v e0bay pisaha che sa 36 incha, no sa po-malko ...pri 40 litra He e pochti palen...
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[09:27] <sp2ipt> DL7AD: ready for test? I have to leave in a few minutes
[09:32] <sp2ipt> DL7AD: ok, going now - I'm leaving recording on and will upload audio file later.
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[09:34] <ike> LZ1NY sprq mi intereta
[09:34] <ike> dokato ti kazvah ce utre navsqkade shte prodavat baloni
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[09:41] <lz1dev> v parka prodavat baloni kolkoto iskash :P
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[09:45] <ProSpectre> which balloon was used for SP3OSJ-12 ?
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[09:54] <DL7AD> sp2ipt: ah too late. i had been on the roof with no success
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[10:44] <LeoBodnar> #habhub
[10:51] <Upu> lol
[10:51] <Upu> long flight ?
[10:52] Nick change: Steve_G0TDJ_AFK -> Steve_G0TDJ
[10:52] <Steve_G0TDJ> Hi Guys
[10:54] <jonsowman> was expecting a 7 day window
[10:55] <LeoBodnar> write long fly
[10:55] <Steve_G0TDJ> What's the mode this time Leo? 434.5 as per usual?
[10:55] <LeoBodnar> yeah
[10:56] <Steve_G0TDJ> Contestia?
[10:56] <LeoBodnar> yes 8/250
[10:56] <Steve_G0TDJ> OK Cheers
[10:57] <bertrik> LeoBodnar: is Contestia your favourite mode now?
[10:57] <LeoBodnar> it's the one nobody else is using
[10:58] <DL7AD> LeoBodnar: you got a PM by me
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[10:59] <LeoBodnar> Olivia is probably worth trying but i can't see much gain
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[10:59] <LeoBodnar> as deep fading is not really an issue
[11:00] <LeoBodnar> QRMs are usually short and Contestia rides over them quite well
[11:02] <bertrik> how do you make the exact frequency steps? by choosing a crystal that divides down to the exact baud rate?
[11:03] <LeoBodnar> yes
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[11:08] <sp2ipt> DL7AD: ok, exporting from audacity now, you'll have a chance to check in some time :)
[11:09] <DL7AD> sp2ipt: :)
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[11:15] <sp2ipt> 45 mins of transcoding to ogg. 5.2gb of audio :)
[11:15] <lz1dev> :(
[11:18] <sp2ipt> brought some inox nuts&bolts - new 6 m antenna getting closer :)
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[11:33] <JFS1> What are the details to track B-54?
[11:34] <lz1dev> 434.5
[11:34] <DL7AD> JFS1: 434.500 MHz RXID Contestia 8/250
[11:34] <JFS1> Ta
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[11:39] <Spectre> Chances are good that B-54 will drop into the Canal?
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[12:04] <mauhen> Afternoon all, getting a strong signal from B-54 but I am unable to decode it using 8/250
[12:04] <DL7AD> mauhen: contestia?
[12:04] <mauhen> yes
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[12:06] <mauhen> I can see the waterfall but decoding garbage
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[12:14] <malgar> in3aqk: ciao
[12:14] <in3aqk> ciao
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[12:28] <Maxell> Sick... Already greens $$B-54,101,122517,140531,51.8489,-0.5526,7657,6,-6,4.32,0.68*A957
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[12:31] <Maxell> Over the horizon decoding.
[12:32] <PE2G> Maxell: Nice. Using yr new antenna?
[12:34] <Maxell> PE2G: no, just the usual https://revspace.nl/HAB_Tracker_Station
[12:34] <PE2G> Ah
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[12:46] <JFS1> mauhen - if you're still working on getting B-54 go to OpMode then select Contestia 8/250 and you should see it start decoding the next time it starts transmitting
[12:46] <Spectre> B-54 making it slow and steady
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[12:57] <PE0SAT> B-54 on the spectrum but signal isn't strong enough yet
[13:00] <PE0SAT> There she is ;-)
[13:01] <Upu> you need to make these act as repeaters Leo I could send messages to PE0SAT :)
[13:03] <PE0SAT> Upu: lol
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[13:06] <PE0SAT> I am really on the edge when I look at the tracker
[13:09] <Laurenceb_> http://i.4cdn.org/g/1401528709744.jpg
[13:09] <sp2ipt> DL7AD: catch the file :)
[13:09] <PE0SAT> s/n -3.2dB
[13:09] <DL7AD> sp2ipt: where?
[13:09] <sp2ipt> DL7AD: dcc - here :)
[13:10] <DL7AD> ddc?
[13:10] <DL7AD> dcc?
[13:10] <PE0SAT> DL7AD: data exchange with irc
[13:10] <DL7AD> ah okay
[13:10] <DL7AD> never used that
[13:10] <DL7AD> not sure my irc client supports that
[13:11] <PE0SAT> A very long time ago
[13:11] <DL7AD> i must change the irc client
[13:11] <DL7AD> quassel dont support data exchange
[13:11] <sp2ipt> DL7AD: ok, I'll put it on www
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[13:12] <DL7AD> sp2ipt: transmit is to DL7AD_
[13:13] <DL7AD> sp2ipt: connection failed
[13:14] <sp2ipt> huh, NAT probably :/
[13:18] <amell> having real problems with this habamp, waterfall makes no sense.
[13:18] <amell> i will talk to upu about it later.
[13:18] <Upu> sup amell
[13:19] <amell> for some reason when i have habamp on, waterfall isnt straight, it curves. even after 3-4 mins. how long does habamp take to warm up?
[13:19] <Upu> warm up ?
[13:19] <Upu> its not got valves in it
[13:19] <Upu> show me the water fall
[13:20] <Maxell> Laurenceb_: nice CV :P
[13:21] <amell> Upu: http://imgur.com/t5Khk47
[13:21] <Upu> looks normal to me, whats it look like without it
[13:21] <Upu> ?
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[13:23] <amell> one sec
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[13:25] <Spectre> B-54 over London. Death from above.
[13:25] <amell> http://imgur.com/tYNt5Cy
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[13:26] <Upu> what do you mean "curved" ?
[13:26] <bertrik> we're receiving B-54 really well today at revspace, the hague, netherlands
[13:27] <amell> when you turn it on, the lines on hthe left move across the screen towards the left over about 3-4 mins. I cant see B54 with habamp, but i can see it without
[13:27] <Upu> have you got it the right way round ?
[13:27] <amell> in to antenna, out to dongle, right?
[13:27] <Upu> yup
[13:28] <mauhen> Thanks JFS1, it was finger trouble this end.
[13:28] <Upu> how are you powering it ?
[13:28] <Maxell> bertrik: some kind of 70cm ducting
[13:28] <amell> 6V DC reg PSU on the header
[13:28] <amell> tried 7.5 DC, no change
[13:28] <Upu> what are you feeding it into ?
[13:28] <Upu> radio
[13:28] <amell> rtl dongle
[13:28] <Upu> just wonder if its overloading it
[13:28] <Upu> RTL AGC on ?
[13:29] <amell> tried hardware agc, seems worse.
[13:29] <amell> might well be overload
[13:29] <amell> its one of the cosycave dongles, so nothing fancy
[13:30] <Upu> Not tested it with one of those
[13:30] <bertrik> we have gain at only +7 dB on a fc0013 with a habamp
[13:30] <Upu> but its working I suspect
[13:30] <Upu> possibly overloading it
[13:31] <db_g6gzh> I normally set the LNA gain to the point where the noise floor just begins to rise
[13:31] <amell> will come back to you on this in working hours.
[13:31] <amell> too many things on at the moment
[13:32] <db_g6gzh> you can go a bit higher than that but much more gain will not help
[13:32] <amell> dl-fldigi - cant seem to get the red bar over the contesia - Ive forgotten something
[13:32] <Upu> screen shot ?
[13:32] <amell> it wont go over the left far enough
[13:34] <Upu> screen shot ?
[13:34] <amell> hold. crashing issues
[13:35] <db_g6gzh> tune the SDR to get the signal somewhere between 1kHz and 2kHz in dl-fldigi
[13:36] <amell> soundflower is playing up. bear with me
[13:36] <db_g6gzh> if you have auto tune enabled then dl-fldigi will think it can tune the radio and will jump the rad bar back to the middle so you will want to make sure that's disabled unless it actually can control the radio
[13:38] <amell> http://imgur.com/Mc9go5m
[13:38] <amell> the bar wont go below 1000Hz. puzzled
[13:39] <db_g6gzh> amell: see my 14:36 comment
[13:39] <Maxell> yesh might also be the sweet spot function
[13:39] <amell> tuning the radio more will shift the tone frequency? surprised.
[13:40] <db_g6gzh> SSB is effectively just a shift of RF down to audio so changing the RF tuning will change to AF tone
[13:41] <amell> no wonder i always have this trouble :)
[13:41] <amell> need to find out how to fine tune
[13:41] <db_g6gzh> click on the digits top left
[13:42] <amell> B balloons arent the best ones to practice on.
[13:42] <amell> wait between txing
[13:42] <db_g6gzh> true, constant signal makes it easier
[13:44] <amell> now the red bar isnt quite wide enough
[13:45] <db_g6gzh> as long as the mode is right and it's centered that should be OK
[13:46] <amell> now centered but not decoding at all
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[13:46] <Upu> turn sql off
[13:46] <amell> oh yeah
[13:46] <Upu> increase the input volume slightly till the black diamond at the bottom right goes green
[13:46] <amell> waiting for the next B burst
[13:47] <db_g6gzh> there's also a delay with Contestia so you may need to wait for a full block
[13:47] <Upu> amell we don't say burst unless something has BURST
[13:47] <Upu> transmission :)
[13:47] <amell> :)
[13:48] <Darkside> Upu: whats that, ar eyou saying a balloon has BURST?
[13:49] <Darkside> i wonder what could have BURST
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[13:49] <Darkside> even though there actually hasn't been a BURST
[13:49] <amell> http://imgur.com/BUQiHtY
[13:49] <amell> no decodes.
[13:49] <amell> strange
[13:49] <db_g6gzh> Darkside: is the android x server your work ?
[13:50] <Upu> it looks spread out to me
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[13:50] <Darkside> db_g6gzh: no?
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[13:50] <Upu> and you only seem to have 1500hz of bandwidth
[13:50] <Upu> have you set that in RTL program ?
[13:51] <db_g6gzh> Darkside: oh, seems to have au.darkside... in it's name so just wondered
[13:51] <Darkside> db_g6gzh: interesting
[13:51] <Upu> aadamson - should be -11 for the balloon </pedant>
[13:52] <amell> ive not set 1500hz anywhere
[13:52] <db_g6gzh> Darkside: https://play.google.com/store/apps/details?id=au.com.darkside.XServer
[13:53] <Darkside> heh
[13:53] <Darkside> nope, not me
[13:54] <amell> going to have to go. wife giving me grief. ffs.
[13:54] <db_g6gzh> ok, odd coincidence in name and country then
[13:58] <amell> decode!
[13:58] <amell> it just wasnt turned up enough
[13:59] <amell> 111.7km, 5.1 ele
[14:01] <Maxell> yes Upu balloons should be -11
[14:01] <Maxell> unles you are in a hot air ballon and use that as your second main mobile station: when it could be 8
[14:02] <db_g6gzh> amell: good 8-)
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[14:05] <Maxell> dutchtux: omg. dutch and linux \o/
[14:05] <dutchtux> :)
[14:06] <PE0SAT> B-54 s/n 5.4 dB
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[14:23] <PE2G> PE0SAT: what's the precise freq for B-54?
[14:23] <DL7AD> PE2G: 434498.91+1500hz
[14:24] <PE2G> Thanks DL7AD
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[14:27] <aadamson> Upu, yes I know that, but that's just a recommendation, it's not a *rule*
[14:28] <PE2G> Nothing from B-54 here, too far below the horizon
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[15:01] Nick change: G8KNN-1 -> G8KNN
[15:01] <aadamson> ok, you foil balloon launchers, what is the perferred way to attach the payload to the balloon?
[15:01] <aadamson> *now watch someone is going to say*... "string of course" .. lol
[15:02] <lz1dev> no ofc
[15:02] <lz1dev> you use quantum entanglement
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[15:02] <aadamson> OMG, I can't wait to findout what that is?
[15:02] <aadamson> :)
[15:05] <G8APZ> and over the Channel coast she goes!
[15:05] <Thomas__> B54 seems to be getting weak too close to home? Is this a sggestion of batt losing pwr?
[15:06] <G8APZ> Thomas__ I noticed it was weakish as it flew close to here (within 30km) but at 90km it is fairly strong!
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[15:07] <bertrik> battery is still going strong at 4.32V, possibly a bit high for a lithium :)
[15:07] <Thomas__> G8APZ it was very strong over London circa 80 miles from me but Hastings coast is abt same distance!
[15:09] <G8APZ> I think it must be the radiation pattern of a ground plane antenna .... not much when close and overhead!
[15:13] <G8APZ> aadamson some pics of one of Leo's early packages show the "string" >>> http://www.leobodnar.com/balloons/B-2/index.html
[15:14] <G8APZ> and here >>>> http://www.leobodnar.com/balloons/B-12/index.html
[15:17] <aadamson> G8APZ, thanks, I'm good on how to attach to the tracker and it looks like it made a loop and pulled the neck through it and then tied/taped the neck loop... I'll come up with something similar...
[15:17] <aadamson> hadn't looked that far back in the pictures. so thanks
[15:18] <Thomas__> G8APZ Rather interesting many thanks
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[15:22] <LeoBodnar> do you know how to tie knots and use tape?
[15:23] <LeoBodnar> just in case you don't know: http://ukhas.org.uk/guides:knots
[15:23] <LeoBodnar> and http://ukhas.org.uk/guides:tape
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[15:35] <aadamson> tape, whats that, I thought you just held the string up to the neck and it instantly anealed the 2 together :).
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[15:39] <aadamson> LeoBodnar, if you just fold the neck up and tape it with the loop holding the payload does that survive the elements ok? using kapton for example
[15:40] <aadamson> Most likely I'm trying to over engineer this, but it seems the above wouldn't be very robust
[15:42] <aadamson> e.g. - which is what it appears you did here - http://www.leobodnar.com/balloons/B-13/Pages/1.html
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[15:57] <number10> bit of cotton and some tape
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[16:08] <Spectre> B-54 is realy doin well.
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[16:26] <G8APZ> Spectre yes... very stable in frequency, and reasonable signals still at 163km 3.1 elevation
[16:27] <G8APZ> Looks as if there will be rather less trackers once it gets out of range of UK
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[16:49] <amell> got back now. looks like i lost b54 at 193.8km 2.4 ele.
[16:53] <G8APZ> bad luck!!
[16:54] <G8APZ> It's still decoding here in SW Essex
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[16:55] <amell> well its the first time ive managed to hear mid-channel so its a incremental improvement
[16:55] <amell> when i figure out this habamp it should hopefully improve
[16:55] <Upu> 446km and -1 :)
[16:56] <G8APZ> SA6BSS Are you listening via a UK webSDR? Your co-ordinates in FLdigi show you as in Sweden!
[16:56] <G8APZ> Upu you are doing well... I usually lose sigs by -1
[16:56] <Upu> well its gone now
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[16:56] <G8APZ> Perhaps a slight lift on 70cms.
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[16:56] <amell> DL7AD appears to have over the horizon reception
[16:56] <Upu> my antenna is 300m asl
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[16:57] <G8APZ> I still have 2.4 elevation at 191km
[16:59] <G8APZ> B-54 Bienvenue a France! Allez, allez!
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[17:14] <SA6BSS> G8APZ: going through a uk web sdr
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[17:18] <Spectre> B-54 still flying. Nice, realy nice.
[17:19] <G8APZ> SA6BSS OK thanks!
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[17:39] <PE0SAT> B-54 still going strong: $$B-54,423,173726,140531,49.6787,1.3826,10998,7,-11,4.32,0.7*5787
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[17:41] <Spectre> Anyone in the know how long B-54 will be trackable (batteries?)
[17:42] <Upu> solar powered Spectre
[17:42] <Upu> as long as the sun exists*
[17:42] <Upu> *+/- a few billion years
[17:43] <PE0SAT> Hope it won't go in eclipse
[17:44] <Upu> battery will run through an eclipse
[17:44] <Upu> they seem to manage about 190 hours before they go awol
[17:44] <Spectre> Nice
[17:45] <Upu> either float out of range or die
[17:47] <Spectre> So the balloon was filled just enough to lift the payload? Is that the reason why it isn't climbing so high?
[17:47] <Spectre> And flying so far ?
[17:48] <Upu> under certain circumstances you get get balloons to float
[17:48] <Upu> its relatively easy to do with the foil balloons, not so easy with the latex ones
[17:51] <Spectre> Ok
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[17:55] <dutch_duc> No way to find frequency used by B54 on spacenear or mobile tracker. Someone on the chat know and can tell please ?
[17:55] <Upu> 434.500
[17:56] <Upu> its doing "pips" then transmitting Contestia 8/250
[17:56] <amell> So is 193.8km ok with no habamp 0m AGL X-50?
[17:56] <Upu> press RSID in dl-fldigi
[17:56] <amell> actually, more like 8m AGL
[17:56] <Upu> can't say amell
[17:56] <Upu> sounds reasonable
[17:57] <amell> was unattended, so cant say what happened as it faded.
[17:57] <amell> mind, soundflower seems to have some issues when waking from sleep.
[17:59] <dutch_duc> tnx Upu
[18:02] <Upu> I updated spacenear.us
[18:03] <amell> what was the dial freq for B54?
[18:04] <amell> i had 434.465700
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[18:05] <Upu> your RTL needs calibrating :)
[18:06] <amell> agreed
[18:07] <Upu> you can use it to calibrate
[18:07] <Upu> its close enough to 434.500
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[18:11] <amell> does habamp freq shift in any way - i shouldnt need to retune with habamp off/on?
[18:11] <Upu> no
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[18:12] <amell> http://i.imgur.com/u4IUxek.png - this is what happens when i turn it on.
[18:13] <G8APZ> an amplifier generally only increases the signal (and noise) to overcome feeder losses. With a decent front end the feeder loss is all you need to overcome. The rest of what you add will be increased signal and increased noise
[18:14] <amell> http://i.imgur.com/zeKk7Sb.png - this is what still happens a couple of minutes after i turn it on.
[18:14] <mfa298> that could well be the signals drifting
[18:15] <G8APZ> The B-54 signal is totally stable
[18:15] <mfa298> especially as the signals higher in the band aren't changing at the same rate as the lower ones
[18:15] <amell> http://i.imgur.com/Pzc3gHR.png - this is what happens when i turn the gain right down
[18:15] <G8APZ> I haven't touched my dial for hours and the signal is stable
[18:16] <mfa298> amell: I think that's the signals you're looking at drifting not something at your end
[18:17] <amell> they dont do this when the habamp is out of the circuit
[18:17] <mfa298> you have something at 435.293 that looks pretty stable
[18:17] <mfa298> you may well be seing more signals that weren't being detected before
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[18:18] <amell> yeah, now it looks like its stabilised completely. some lines disappeared off the left edge. I dont know where they came from.
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[18:18] <mfa298> probably some qrm that drifted out of the band.
[18:20] <mfa298> theres lots of things that generate noise that drifts around
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[18:22] <amell> ok. i think i got a handle on this habamp, the gain right down seems to show quite a lot of lines on the waterfall
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[18:22] <amell> just not enfirely convinced that it doesnt shift the frequency
[18:23] <mfa298> it's effectively just the same as an audio amplifier just a much higher frequency.
[18:24] <amell> yeah ok. so whats stopping me from hearing b54 now?
[18:24] <Upu> try it with something other than a £10 RTL dongle before making assumptions :)
[18:24] <amell> Upu: lol
[18:24] <Upu> If you think its fault I'm happy to replace it
[18:24] <Upu> but those dongles have been known to be drifty
[18:24] <amell> never said it was faulty. just a matter of understanding it
[18:24] <Upu> the crystals in them are crap
[18:25] <Upu> should be just plug in and it works
[18:25] <mfa298> most of those screenshots with the habamp in show things shifting at different rates (and some things not shifting) which is highly unlikely to be an amp fault.
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[18:25] <mfa298> if the amp does anything to the signals it would do the same to all of them
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[18:25] <amell> http://i.imgur.com/PiowLKy.png - this is where i am at now
[18:27] <mfa298> I cant see anything obviously wrong there.
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[18:28] <amell> yes, quite a few lines. puzzling that i was unable to pick out b54 from there. I will have to try again with B55
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[18:35] Nick change: pjm_ -> pjm
[18:35] <G8APZ> amell where are you located?
[18:35] <amell> Elsworth
[18:36] <G8APZ> Cambs?
[18:36] <amell> y
[18:37] <G8APZ> you are near the edge of coverage.. I only have 1 deg left and I'm probably 50km south of you
[18:37] <amell> ok. i was hoping i might get some partials, but cant see anything at all.
[18:38] <G8APZ> actually I found you on the 0 line...
[18:38] <G8APZ> so even with a decent receiver and antenna you would be struggling!
[18:38] <nigelvh> K7NVH-12 in the air.
[18:38] <nigelvh> On APRS.fi
[18:38] <amell> oh yeah, blimey, B54 moves fast.
[18:39] <G8APZ> 0 degrees to horizon that is
[18:40] <amell> nigelvh: Washington - is it a floater aimed at taking leobodnars crown?
[18:40] <nigelvh> No, for a class I volunteer with @ the local university, should do a normal pop sort of deal.
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[18:44] <nigelvh> In a bit a second balloon with K7NVH-13 will go.
[18:44] <nigelvh> But that's still a few off.
[18:46] <amell> anyone know of a easy UK reference signal that i can use to calibrate this SDR
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[18:50] <Lunar_Lander> hello
[18:53] <nigelvh> Hey Lunar_Lander
[18:53] <nigelvh> I've got a flight going on APRS. K7NVH-12
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[18:53] <mikestir> amell: is your habamp in line or can it be on any band?
[18:53] <amell> its currently in line, but i can just take it out to calibrate the dongle.
[18:53] <mikestir> I used to use the ATIS at liverpool airport
[18:54] <amell> (its not masthead)
[18:54] <mikestir> you could see if you can find a local ATIS which would be transmitting all the time
[18:54] <mikestir> and it's AM so you can tune it as SSB to get it spot on frequency
[18:55] <mikestir> or I believe there is some software that will do it automatically based on GSM base stations
[18:59] <LeoBodnar> hm, aprs.fi does not seem to provide LOS circle for no-balloon/aircraft objects
[18:59] <LeoBodnar> like flying "O"
[18:59] <aadamson> well, it's major learning time...
[18:59] <aadamson> w7qo-6 is up and at approx 10k feet
[18:59] <aadamson> about .7 and some m/s climb rate
[19:00] <LeoBodnar> re: http://aprs.fi/#!call=a%2FK7NVH-12
[19:01] <nigelvh> Yep
[19:01] <lz1dev> what's that?
[19:01] <nigelvh> My flight
[19:01] <LeoBodnar> y u no dl-fldigi aadamson ?!
[19:01] <aadamson> not in the US :)... this is all aprs on this flight
[19:02] <nigelvh> Yep. APRS here too.
[19:02] <LeoBodnar> you are such an advocate of using non-APRS modes on GPSL
[19:02] <aadamson> I have thor16 functional, but didn't go there... yep, but I Know my limitations on how many things I can check out at one time :)
[19:02] <aadamson> LeoBodnar, mostly I'm just an advocate of having fun... and I'm not sure how hard my hands were shaking when I let go that this is fun :)
[19:03] <aadamson> I also think I figured out the issue in the US with non-aprs modes.... too much vast country (not enough density of hams interested in doing it)... so I probably learned that lesson
[19:05] <nigelvh> Yep
[19:06] <aadamson> so what's the magic with picking solar cells... I picked dark ones this time and they seem to be working better
[19:06] <nigelvh> APRS gives us the infrastructure you have built up with dl-fldigi
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[19:06] <aadamson> than the light ones I have on my development platform
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[19:07] <aadamson> nigelvh, yeah, but it's been so much fun when I play fldigi even via the web sdr, that I figured it could cross the pond to over here, but I suspect trying to get that to happen - wont
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[19:09] <LeoBodnar> wut? http://habitat.habhub.org/mobile-tracker/?nyan=1
[19:10] <amell> wtf
[19:10] <jonsowman> haha that was an april fool's
[19:10] <jonsowman> apparently it hasn't been removed
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[19:12] <aadamson> LeoBodnar, does balloon color effect the heat/cool cycle on these small superpressure flights?
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[19:13] <nigelvh> aadamson: Yeah, there are a number of advantages, but the coordinating of getting everyone to do it, would be very difficult
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[19:15] <aadamson> nigelvh, yeah, what I've experienced... I put out an email on the gpsl list yesterday to see who would turn on their dl-fldigi... 5 stations in all of the US and I now of one other so call it 6... whooo hooo... wouldn't help much
[19:15] <aadamson> interesting thought provoking question is would the UK guys have gone to 432mhz and ISM and SSB modes if they could have flown aprs on a flight vehicle?... guess we'll never now
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[19:17] <nigelvh> Yeah, necessity is the mother of invention.
[19:18] <aadamson> yep, exactly, however hats off to the, it is a very cool (fun) system and works amazingly well!
[19:18] <daveake> I think the answer is "of course we wouldn't"
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[19:18] <Spectre> :)
[19:19] <Upu> shame really
[19:19] <aadamson> I wonder... you guys have such a group that enjoys *joining in* that it seems to be *part of the fun*... so I wonder - this is what causes me to wonder if the US could/would do the same
[19:19] <Upu> but look at the coverage now
[19:19] <daveake> I think what we have is great - works very well; gets people involved in the flights; encourages experimentation
[19:19] <nigelvh> Yep
[19:19] <Upu> Apex Alpha was lost due to lack of recievers over Poland
[19:19] <Upu> haha
[19:20] <nigelvh> At least there is *some* APRS stuff over a good portion of the US
[19:20] <LeoBodnar> you can't enforce fun on others
[19:20] <nigelvh> For now I'll enjoy my flight on APRS.fi
[19:20] <aadamson> ^ true words spoken
[19:20] <Upu> I can import nigelvh
[19:20] <nigelvh> You can if you want
[19:21] <Upu> call ?
[19:21] <nigelvh> K7NVH-12
[19:21] <lz1dev> already did Upu
[19:21] <nigelvh> for this one
[19:21] <nigelvh> In a bit we'll do a second balloon with K7NVH-13
[19:21] <Upu> ah rgr thx lz1dev
[19:21] <malgar> who did the first amateur launch using 434 in uk? and when?
[19:22] <malgar> I remember jcoxon in 2006 using an old phone tracker.. but I think that the use of ISM is after that
[19:22] <malgar> right?
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[19:25] <fsphil> everything on 434mhz in the UK is ISM
[19:25] <fsphil> everything that flies on a balloon*
[19:25] <fsphil> not sure who the first to do RTTY was
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[19:25] <Upu> James I think
[19:26] <aadamson> you know that's probably another variable that didn't work over here... all of 430-450 is ham
[19:26] <aadamson> some of it's secondary usage, but ism starts at 900mhz
[19:27] <fsphil> I believe we have the 900mhz ism band now too
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[19:30] <nigelvh> We have a 434 ISM allocation
[19:30] <nigelvh> But since we DO have ham usage, and we can use ham in the air, nobody bothers with ISM limitations.
[19:32] <aadamson> nigelvh where? I just looked at the bandplans the other day and there was hf ism, but nothing in 430mhz
[19:32] <nigelvh> Yep, 433.92 +/- a bit
[19:33] <nigelvh> Also, looks like we've got a pop.
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[19:42] <Upu> thanks craag for the Reddit support :)
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[19:45] <lz1dev> Upu: did he buy you reddit gold
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[19:45] <Upu> well he's good when people ask about amps for 434/1090 etc :)
[19:45] <Upu> I don't do Reddit
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[19:51] <nigelvh> Pleeeeeeease don't land in a lake...
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[19:52] <chrisstubbs> http://i.imgur.com/z7Jx6Ma.png made me lol
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[19:53] <SpeedEvil> hah
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[20:01] <lz1dev> look
[20:01] <lz1dev> Long lake
[20:01] <lz1dev> wat
[20:01] <lz1dev> payload dodged the lake
[20:02] <lz1dev> what is this
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[20:05] <SpeedEvil> There must be trees round it
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[20:06] <lz1dev> no trees
[20:06] <lz1dev> but literally took a right turn, just before the lake
[20:08] <nigelvh> YEEEES
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[20:16] <nigelvh> Nice. Looks like we got positions on the ground. Easy recovery.
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[20:27] <fsphil> who's flight is this?
[20:27] <fsphil> heck of a landing spot
[20:28] <sp2ipt> re
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[20:29] <nigelvh> K7NVH-13 in the air
[20:29] <nigelvh> Mine fsphil
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[20:30] <Upu> its on snus
[20:30] <Upu> glad someone else can import them
[20:30] <fsphil> is there a new script?
[20:30] <Upu> I'm off to Norway for a week next week
[20:30] <Upu> yes
[20:30] <Upu> lz1dev redid it to avoid importing duplicates
[20:31] <fsphil> good one
[20:31] <nigelvh> Yeah, we got lucky with 12
[20:32] <nigelvh> We'll see what happens with 13
[20:32] <Upu> are you recovering nigelvh ?
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[20:32] <nigelvh> Other people in the class are working on recovery, yes.
[20:32] <lz1dev> git rfresh on the tracker
[20:32] <lz1dev> K7NVH-13 was bugged
[20:32] <nigelvh> I'm at the base with the radios 'n' shit
[20:33] <cm13g09> mfa298: ping
[20:33] <Upu> I was about to say you seem a little too relaxed and communicative to be "in the field"
[20:33] <nigelvh> K7NVH-13 had an old position from last year on APRS.fi
[20:33] <lz1dev> yeh
[20:33] <Upu> I can fix that
[20:33] <nigelvh> Upu: Yes. I wouldn't be on IRC out there.
[20:33] <lz1dev> Upu: already did :)
[20:33] <Upu> haha
[20:33] Action: Upu exits
[20:34] <Upu> I am redundant my work here is complete
[20:34] <lz1dev> [] Upo replaced.
[20:34] <Upu> lol
[20:36] <mfa298> cm13g09: pong
[20:42] <Upu> http://aprs.fi/#!mt=roadmap&z=11&call=a%2FN9VAR-3&timerange=3600&tail=3600
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[20:58] <amell> B-54 going well. hope sunrise is kind to it.
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[20:59] <SP9UOB-Tom> evening all
[20:59] <sp2ipt> SP9UOB-Tom: hi
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[21:54] <ian__> I guess that the RTL dongle is powered by the PC USB and the HABAMP by another source. I don't suppose that somehow there is some form of connection between them both that might be affecting the voltage applied to the dongle when the HABAMP is switched on. We are, I guess, making an assumption that only the ground is commoned? Just a thought Upu, Amell
[21:55] <amell> The habamp is powered by a reg psu on the headers, plugged into another mains socket.
[21:56] <amell> i think we are ok now, I need to see another balloon first though. I suspect it was a dongle frontend overload issue. gain right down seems to have settled things.
[21:57] <ian__> Ah thanks for that. I guess it isn't immediately obvious when that is happening, but likely to be recognised through the operating experience.
[21:58] <ian__> I just hate mysteries, and have to see the arse out of them at times! I occasionally think it might be in my DNA :)
[22:06] <nigelvh> K7NVH-13 has popped
[22:09] <Lunar_Lander> oh
[22:10] <Lunar_Lander> nigelvh, I found something interesting
[22:10] <Lunar_Lander> someone in Luxemburg made a full scale AVR training board I would say where you can connect an AVR to all sorts of devices on the PCB itself
[22:10] <Lunar_Lander> looks really nice
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[22:13] <SP9UOB-Tom> night all
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[22:17] <Lunar_Lander> nigelvh, want to have a look at it?
[22:18] <nigelvh> I'm a bit busy ATM
[22:19] <Lunar_Lander> ah sorry
[22:19] <craag> Lunar_Lander: He's doing an active flight, give him a break :)
[22:19] <Lunar_Lander> oh dang
[22:19] <Lunar_Lander> thanks for reminding me
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[22:53] <chrisstubbs> Does anyone recognise the "M" logo on the silk of this GPS module? http://bit.ly/1pvLcaG
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[22:55] <mattbrejza> chrisstubbs: crop it out hte image and ask google :)
[22:56] <jonsowman> mitsumi
[22:56] <jonsowman> as it says on the device
[22:56] <jonsowman> http://www.logosdatabase.com/search/mitsumi
[22:56] <nigelvh> Found the balloon! Great day, two launches, two recoveries.
[22:56] <nigelvh> Headed home.
[22:56] <mattbrejza> jonsowman: so boring :P
[22:56] <jonsowman> lol
[23:00] <Lunar_Lander> nigelvh, yay, congratulations!
[23:07] <SpeedEvil> Woo!
[23:11] <chrisstubbs> Ah cool that means they may well have made the whole GPS. They only mention antennas on their site from what I can see.
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[23:44] <aadamson> KT5TK, Thomas thanks for the comments!
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[00:00] --- Sun Jun 1 2014