highaltitude.log.20150501

[00:00] <Ian_> Does the major difference relate to handling of Glonass perhaps. I don't know.
[00:02] Nick change: zyp_ -> zyp
[00:02] <Ian_> http://www.dailymail.co.uk/sciencetech/article-3063082/Has-Nasa-built-WARP-DRIVE-Engineers-claim-tested-impossible-engine-travel-faster-speed-light.html
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[00:08] <SpacenearUS> New vehicle on the map: 03KB8STK_chase - 12http://tracker.habhub.org/#!qm=All&q=KB8STK_chase
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[00:08] <Nova2> can someone tell me how to stream pictures through ham with rpi?
[00:10] <DL7AD> Nova2: have a look for SSDV. but ask tomorrow. then there will be more persons active here
[00:10] <DL7AD> i mean today later
[00:11] <Nova2> yea i know what SSDV is but can i use with pi
[00:11] <Nova2> and how would i connect the antenna
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[00:36] <Lunar_Lander> good night
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[03:24] <SpacenearUS> New vehicle on the map: 03zs6gc_chase - 12http://tracker.habhub.org/#!qm=All&q=zs6gc_chase
[03:48] <SpacenearUS> New vehicle on the map: 03ZR6LJK_chase - 12http://tracker.habhub.org/#!qm=All&q=ZR6LJK_chase
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[04:56] <Nyamazane> What is happening to Lichtenburg Airport, North West, South Africa launch today...?
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[05:44] <SpacenearUS> New vehicle on the map: 03ZS6ERB-11 - 12http://tracker.habhub.org/#!qm=All&q=ZS6ERB-11
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[06:10] <SpacenearUS> New vehicle on the map: 03ZR6LJK-3 - 12http://tracker.habhub.org/#!qm=All&q=ZR6LJK-3
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[06:33] <KM4FSW> haha UpuWork, completely know the chinese holiday. Just tried to sqeeze through the mall here, completely filled with mainlanders
[06:33] <KM4FSW> Well really looking forward to trying the new preamps
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[07:13] <UpuWork> KM4FSW http://i.imgur.com/NtNG3JP.png yellow = original, blue = slight redesign of that one, purple = total redesign
[07:13] <UpuWork> was it you asking about ADS-B ?
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[07:17] <Vaizki> +6dB from redesign? nice
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[07:18] <UpuWork> just trying ideas
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[07:19] <Vaizki> is that rigol sa with a tracking generator?
[07:19] <UpuWork> yeah
[07:20] <Vaizki> i have many SAs in the house now but none with a tracking gen...
[07:21] <Vaizki> max hold and sweep for me
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[07:29] <UpuWork> I wouldn't have bought one with out TG as its all I really use
[07:32] <Vaizki> I got a bunch of equipment dirt cheap so beggars cant be choosers :)
[07:33] <Vaizki> maybe if I really get into RF there's a 7GHz tracking gen SA waiting for me somewhere
[07:34] <UpuWork> If its just sat about doing nothing send it to me
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[07:34] <UpuWork> I will love and care for it until you need it
[07:36] <UpuWork> Its been a really useful purchase
[07:36] <UpuWork> I got 1db extra gain just by switching the inductors out with some different ones
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[07:46] <Vaizki> they run about a thousand or so?
[07:47] <RealBorg> hi
[07:47] <UpuWork> yeah something like that think I paid £950
[07:47] <RealBorg> any antenna experts in here? or someone with a simulator?
[07:47] <UpuWork> £921
[07:48] <UpuWork> from Rigol UK
[07:48] <UpuWork> aka Telonic.co.uk
[07:48] <UpuWork> hi RealBorg I'd just ask see if anyone can help
[07:50] <RealBorg> I'm thinking about a simplified spiral antenna
[07:50] <RealBorg> take 1 wavelength of coax, connect the center wire to the insulation at 1/2 wavelength
[07:50] <RealBorg> arrange the wire in a rectangle
[07:51] <RealBorg> I would expect a narrow band circular polarized antenna from this
[07:52] <RealBorg> easy to build, easy to mount, easy to add a reflector
[07:54] <Geoff-G8DHE-M> Doyou mean the inner to the outer at 1/2 wavelength ? Where do you feed it ?
[08:00] <gonzo__> upu is that the 1.3ghz version? (I think that was the top limit)
[08:00] <RealBorg> through the coax
[08:00] <UpuWork> 1.5Ghz
[08:00] <RealBorg> i got the idea from http://www.antenna-theory.com/definitions/infinite.php
[08:00] <gonzo__> almost
[08:00] <Geoff-G8DHE-M> Can't visualise what your describing in that case!
[08:01] <gonzo__> How does it perform upu, as I was looking at getting one of them
[08:01] <UpuWork> I'm really happy with it
[08:01] <UpuWork> the tracking gen isn't great over the whole range but you can normalise it
[08:01] <gonzo__> I should have brought opne from friedrichsaffen last year
[08:01] <RealBorg> Geoff-G8DHE-M, like the spiral antenna described on this site
[08:02] <RealBorg> but instead of the center of the spiral the feedpoint is in one corner of the antenna
[08:02] <gonzo__> they were doing the sa and the dircetional coupler for around 1000eu
[08:02] <RealBorg> feedpoint meening the pont where the rf signal travels over the outer layer of the coax, in both directions
[08:03] <RealBorg> s/e/a/
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[08:03] <Geoff-G8DHE-M> They appear to be theoretical aerials, never seen one ever in use.
[08:06] <RealBorg> you loose the broadband feature of the spiral
[08:06] <RealBorg> but you also loose weight (suitable for flight?)
[08:07] <gonzo__> why bother with a wideband design for a narrow band application
[08:08] <Geoff-G8DHE-M> Sounds more like an for RFID type work based on a closed loop, rather than a spiral if you organise it as a rectangle. You then have feed problems.
[08:08] <Reb-SM3ULC> funky with slow descent on ZR6
[08:09] <RealBorg> Geoff-G8DHE-M, loop is not to be closed / connected
[08:09] <Geoff-G8DHE-M> What aerials have you built previously ?
[08:10] <gonzo__> anternna design is excruciatinly complicated. Unless you have a huge experience, don't try making new designs
[08:10] <RealBorg> long wire ;) helix dipole
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[08:11] <gonzo__> even reprodicing existing designs can be difficult, as there are often little changes/missing info that causes them not to work.
[08:12] <gonzo__> what is your application
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[08:12] <RealBorg> at the moment I want to try it for noaa/iss
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[08:27] <Reb-SM3ULC> RealBorg: tried? http://www.qsl.net/4nec2/
[08:39] <RealBorg> thanks, looks great, but wine installation seems a bit complicated
[08:40] <Vaizki> upu, how fast is the sweep on the rigol?
[08:41] <Vaizki> depends on rbw I'm sure but with 1 MHz for example that you used.
[08:42] <Vaizki> or hmm is that the SWT? 26.666ms
[08:42] <edmoore> open cork
[08:42] <edmoore> pour
[08:42] <edmoore> installation complete
[08:42] <UpuWork> depedns Vaizki on the bw
[08:44] <gonzo__> finding a container with a cork is difficult these days
[08:44] <edmoore> depends where you shop gonzo__
[08:44] <edmoore> [he said, snootily]
[08:44] <gonzo__> (adn as a connsumable, are you not applying, rather than installing?)
[08:44] <gonzo__> and the ammount you pay (he says tight arsed-edly)
[08:44] <edmoore> well i consider the bottle to be the packaged installer for distribution
[08:45] <edmoore> and the installation process to be the pleasant evening with a friend, or failing that the 3rd edition of the art of electronics
[08:45] <edmoore> and then an uninstall or two during the night
[08:45] <gonzo__> ah a rental arrangement
[08:46] <gonzo__> (or is that... renal ?)
[08:48] <Vaizki> hmm rigol says full span 1.5GHz sweep time is 50ms with 100kHz RBW
[08:49] <Vaizki> that is quite good if true
[08:49] <fsphil> that's not a bad price
[08:49] <fsphil> for the rigol
[08:51] <edmoore> i accidently put my tek into a sweep with 3GHz span at 20Hz RBW
[08:51] <edmoore> and this was... as mistake
[08:51] <Vaizki> hehe
[08:51] <Vaizki> did it take an hour?
[08:55] <edmoore> lol something like that
[08:55] <edmoore> i turned it off
[08:55] <edmoore> i'm still gunning for a R+S VNA this year
[08:55] <edmoore> it will be an easy sell if we get one particular project on the cards
[08:55] <edmoore> and a difficult sell if we don't
[08:55] <Vaizki> get a FSVR too
[08:55] <Vaizki> I will grumble for a year
[08:58] <edmoore> well we have a specan
[08:58] <edmoore> so probs don't need that enough to justify its cost
[09:01] <Vaizki> yea it's not cheap
[09:01] <edmoore> it does look very shiny tho
[09:01] <edmoore> i think actually the next chunk o cash i spend on lab stuff would be a dektop cnc mill
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[09:02] <RealBorg> is the iss transponder usually active? (145.8M)
[09:03] <Vaizki> fsvr for 13GHz seem to go for 70k¬ with basic options
[09:04] <Vaizki> bit rich since it's mostly a SDR with loads of bandwidth :)
[09:07] <Vaizki> i'm waiting for some chinese shop to clone the Tek RSA306 ..
[09:09] <gonzo__> if I could geta rigol for a k, I'd have one. But the vat is the killer
[09:10] <edmoore> i'd still be inclined to blow 1.5-2k on an old HP SA
[09:10] <edmoore> *if* i wasn't in a hurry so could hang around to find with with a TG
[09:11] <edmoore> but really if i want a TG i really just want a VNA so should hold out for that
[09:11] <gonzo__> the TG is a must for what I use them for
[09:11] <edmoore> also i'd want the 3GHz rigol for gps and s-band stuff
[09:12] <edmoore> i have been playing with (at work) a landing altimeter radar for stabilised rockets
[09:12] <edmoore> that's at 2.4
[09:12] <edmoore> i really want the vna for that as direcitonal couplers are getting boring
[09:13] <gonzo__> I did look at the 3gig version, but that is just gettoing too expensive, for the use it would get
[09:18] <edmoore> Vaizki, if you're after just doing filter chacterisation on SAs and you want something afst than sweep and max-hold, have you considered just buying a noise source?
[09:18] <edmoore> faster than*
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[09:22] <gonzo__> you can make a cheap but useable noise source by just chaining MMICs together
[09:25] <SpacenearUS> New position from 03PI_SKY_PLUS after 0313 hours silence - 12http://tracker.habhub.org/#!qm=All&q=PI_SKY_PLUS
[09:26] <Vaizki> edmoore, the noise generators I looked at were not cheap either
[09:26] <edmoore> sure
[09:27] <Vaizki> but did not look into diy options
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[09:27] <edmoore> but they're hecka cheaper than alternatives
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[09:27] <edmoore> my tek scope has a noise option on the func gen which is actually pretty alright (within the range of the func gen)
[09:27] <edmoore> so if i was into HF ham stuff i'd be sorted for everything
[09:28] <Vaizki> yea but it's limited to 100MHz or so?
[09:32] <edmoore> yeah
[09:32] <edmoore> hence the HF comment
[09:36] <Vaizki> I want an arb wf gen anyway so if it had a noise source, could use a mixer with microwave LO to spam a filter
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[09:40] <gonzo__> I seem to recall G4JNT did a review of a cheap noise source kit, in his RadComic column
[09:41] <SpacenearUS> New position from 03SP3OSJ after 0312 hours silence - 12http://tracker.habhub.org/#!qm=All&q=SP3OSJ
[09:41] <gonzo__> some of the MMICs have good gain up to GHz, so chaining a few together you can get good noise levels at quite high freqs. And any ripples you can cal out
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[09:46] <gonzo__> just paid £18 fopr a single resistor. I don't feel well!
[09:49] <edmoore> ouch
[09:50] <edmoore> 0.01% or something?
[09:52] <adamgreig> how many watts? :P
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[09:54] <Vaizki> how about making the pi sky software generate a callsign from the PI ethernet mac address..
[09:54] <Vaizki> wink wink nudge nudge
[09:57] <daveake> Oh so many reasons for that not being a good idea
[09:57] <Reb-SM3ULC> ERB-11 seems not updating on the page but on aprs.fi, http://aprs.fi/#!mt=roadmap&z=11&call=a%2FZS6ERB-11&others=1&timerange=3600&tail=3600
[09:58] <lz1dev> !aprs info ERB-11
[09:58] <SpacenearUS> 03lz1dev: No matches found
[09:58] <Reb-SM3ULC> sri
[09:58] <Reb-SM3ULC> ZS6ERB-11
[09:58] <lz1dev> !aprs info ZS6ERB-11
[09:58] <SpacenearUS> 03lz1dev: 03ZS6ERB-11 is near 03Eastvaal District Council, South Africa 10(-25.86717,31.039) at 0337075 meters - 12http://aprs.fi/info/ZS6ERB-11
[09:58] <SpacenearUS> 03lz1dev: Path: 03ZS6ERB-11>APBMC1-10 via 03WIDE2-2,qAR,ZS0PMB-2
[09:58] <SpacenearUS> 03lz1dev: Symbol: 03/O Speed: 030kmph Course: 030°
[09:58] <SpacenearUS> 03lz1dev: Comment: 0350D60F80C0000000000000
[09:58] <lz1dev> !ping ZS6ERB-11
[09:58] <SpacenearUS> 03lz1dev: Last contact with 03ZS6ERB-11 was 03in a month
[10:02] <lz1dev> !track ZS6ERB-11
[10:02] <SpacenearUS> 03lz1dev: Here you go - 12http://tracker.habhub.org/#!qm=All&q=ZS6ERB-11
[10:03] <SpacenearUS> New vehicle on the map: 03BERKOHAB - 12http://tracker.habhub.org/#!qm=All&q=BERKOHAB
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[10:06] <lz1dev> hmm
[10:07] <lz1dev> oh i see
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[10:07] <lz1dev> there is a position form 2015-05-30
[10:10] <lz1dev> 2015-05-01 08:40:38 BST: ZS6ERB-11>APBMC1-10,WIDE2-2,qAR,ZS6GC-4:/300740z2545.72S/02950.21EO000/003/A=073793/50D4090077000000000000 [Delayed or out-of-order packet (timestamp)]
[10:10] <lz1dev> timestamp on the packet is in the future
[10:10] <lz1dev> :D
[10:10] <Reb-SM3ULC> oh
[10:10] <lz1dev> classic aprs
[10:11] <Reb-SM3ULC> seems to be one of the fastest crossings of a country.. :)
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[10:13] <lz1dev> i've cleared the dodgy position from the database
[10:13] <lz1dev> just refresh
[10:15] <Reb-SM3ULC> cool
[10:18] <gonzo__> adam/ed, it is a 350W 50R non inductive, to repair a dummy load
[10:18] <edmoore> wow so that's fairly substantial
[10:18] <gonzo__> I smoked the last one quite spectacularly
[10:19] <gonzo__> one of these hybrid ones on a flange
[10:19] <gonzo__> the old one turned out to be a pittyful 50W
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[10:23] <Lunar_Lander> hello
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[10:29] <garymortimer> what is the absolute height record for a HAB? They are starting to claim for the one over Swaziland at the minute 37144 thats er not high enough is it
[10:29] <SpacenearUS> New vehicle on the map: 03SPVRI-1 - 12http://tracker.habhub.org/#!qm=All&q=SPVRI-1
[10:29] <lz1dev> !wiki records
[10:29] <SpacenearUS> 03lz1dev: Wiki page 03uk_records (general) - 12http://ukhas.org.uk/general:uk_records
[10:29] <lz1dev> garymortimer: ^
[10:29] <garymortimer> thanks
[10:29] <garymortimer> you know I am lazy
[10:30] <edmoore> that would have been impressive in 2009
[10:30] <edmoore> (he said, snootily)
[10:31] <garymortimer> I still live in about 2000 so I have 9 years to wait
[10:31] <Geoff-G8DHE-M> Also http://arhab.org/#
[10:32] <garymortimer> Looks to me that their balloon is going to Mozambique at least perhaps even feet wet
[10:32] <Geoff-G8DHE-M> 44376m is ARHAB record
[10:34] <garymortimer> Yeah I see that, its crusing along at 37k according to APRS Fi is that the bouncing around bit that was seen with Daves last attempt. What makes higher, the obvious? Lighter
[10:34] <garymortimer> I hold the South African manned balloon altitude at just over 30k feet so it would be nerdy to try this as well
[10:36] <craag> Bigger balloon, lighter payload, slightly smaller amount of h2 (but still enough lift to push through any weather), and a hell of a lot of luck!
[10:36] <lz1dev> !track c3d528cd4dcc690f7c7d5e7a0110bd08
[10:36] <SpacenearUS> 03lz1dev: Here you go - 12http://tracker.habhub.org/#!qm=All&q=c3d528cd4dcc690f7c7d5e7a0110bd08
[10:36] <craag> There was also a batch of hwoyees that were very good - and are responsible for most of the records.
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[10:37] <garymortimer> Wow, that much difference, how did you know you had a good Hwoyees??
[10:38] <craag> Cos they kept bursting higher than expected.
[10:38] <garymortimer> AH
[10:38] <craag> THat's the theory anyway
[10:38] <garymortimer> So that would be the best brand for this sort of thing
[10:39] <craag> Well ones since are back to their spec, but afaik they're one of the best per latex weight.
[10:40] <craag> A lot of it is luck, in the quality of the balloon, the weather, etc.
[10:41] #highaltitude: mode change '+o Upu' by ChanServ!ChanServ@services.
[10:41] Topic changed on #highaltitude by Upu!Upu@ubn.upuaut.net: Welcome to #highaltitude - UKHAS 2015 Conference Tickets now available https://ukhas.org.uk/general:ukhasconference2015 Please read the wiki - http://wiki.ukhas.org.uk
[10:41] #highaltitude: mode change '-o Upu' by ChanServ!ChanServ@services.
[10:42] <garymortimer> Is that as much the upper atmosphere as it is low level weather
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[10:42] <craag> Yep
[10:42] <craag> Inversion layers and stuff seem to cause obstacles.
[10:43] <craag> This is the limit of my knowledge.
[10:43] <garymortimer> The balloon seems to be doing that bouncing thing, what did you all call it the other day? I feel sorry for them as the coast rushes up
[10:43] <edmoore> launch on a good day in summer - that seems to help
[10:45] <garymortimer> even here on a 45C day at launch?? Certainly at least 25C early morning won't that require a chunk of extra gas just to get off and an earlier burst (can you tell I'm making this up)
[10:45] <edmoore> no
[10:45] <edmoore> it will require no more or less gas
[10:46] <garymortimer> ok, I see its climbing again
[10:46] <edmoore> the bouyancy properties are intrinsic assuming thermal equilibrium
[10:46] <garymortimer> ok
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[10:55] <garymortimer> can the really high ones get into a float situation?
[10:56] <garymortimer> was that a dumb question?
[10:57] <daveake> high float - http://www.daveakerman.com/wp-content/uploads/2013/04/alt1.png
[10:57] <daveake> dunno if that counts as "really high"
[10:57] <garymortimer> well you'd need a big ladder
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[12:01] <fsphil> some ssdv data being uploaded, looks like a launch
[12:01] <fsphil> though a large amount of lost packets
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[12:04] <fsphil> seems to be in spain. nothing on the tracker
[12:05] <daveake> No payload doc
[12:05] <daveake> I'll add one ...
[12:10] <SpacenearUS> New vehicle on the map: 03PLABI - 12http://tracker.habhub.org/#!qm=All&q=PLABI
[12:10] <daveake> bingo
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[12:21] <SpeedEvil> http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2&image_id=1596&linkId=13889745
[12:21] <SpeedEvil> Last messenger image of mercury
[12:21] <SpeedEvil> 2.1m/pixel
[12:22] <daveake> "I wonder if it will be friends with me"
[12:27] <fsphil> these guys are really struggling to get these ssdv packets down
[12:28] <daveake> yep
[12:28] <daveake> driving perhaps; underneath the balloon perhaps
[12:28] <fsphil> they had the same problem at the launch site
[12:29] <fsphil> possibly got the shift or filters wrong
[12:29] <daveake> ah good point
[12:29] <SpacenearUS> New vehicle on the map: 03KG5FKB-11 - 12http://tracker.habhub.org/#!qm=All&q=KG5FKB-11
[12:41] <gonzo__> something flying?
[12:48] <fsphil> yea, spanish launch
[12:51] <gonzo__> ah, I see. Still a bit of alt req before I see the blue line from my window
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[13:47] <SpacenearUS> New vehicle on the map: 03MCB - 12http://tracker.habhub.org/#!qm=All&q=MCB
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[14:09] <SpeedEvil> https://www.youtube.com/watch?v=rwX-n5Fohsk
[14:09] <SpeedEvil> spacex talking about launch escape on dragon
[14:09] <SpeedEvil> attempt today
[14:12] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12http://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
[14:15] <Reb-SM3ULC> nice quality on the pics from plabi
[14:18] <Vaizki> they couldn't get complete images even on the ground, must be something wonky?
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[14:34] <SpacenearUS> New vehicle on the map: 03KD5ZPL-11 - 12http://tracker.habhub.org/#!qm=All&q=KD5ZPL-11
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[14:39] <mcbcurator> upu, daveake: aprs is working in flight :)
[14:39] <daveake> I see :)
[14:39] <fsphil> is that you sending ssdv?
[14:40] <mcbcurator> yes
[14:40] <UpuWork> yeah it is
[14:40] <fsphil> nice
[14:40] <UpuWork> nice pics :)
[14:40] <daveake> ssdv + aprs from same tracker
[14:40] <mcbcurator> got loaned a nice icom. Really good reception.
[14:40] <daveake> yeah not missing any packets
[14:41] <daveake> 5 min since last APRS packet
[14:41] <daveake> What's the update rate set to ?
[14:41] <mcbcurator> I can still see it. Totally clear day.
[14:41] <mcbcurator> 1m. But I'm not tuned to aprs
[14:41] <daveake> ok
[14:41] <mcbcurator> relying on others in the area for that
[14:41] <mcbcurator> one guy is hearing it but not igating
[14:42] <daveake> ok
[14:43] <UpuWork> it is getting gated now
[14:43] <daveake> yeah just saw that
[14:44] <daveake> nice when a) someone else does your testing for you, and b) it actually works
[14:44] <UpuWork> Live images are great lots of detail
[14:44] <UpuWork> better than clouds :)
[14:44] <daveake> :)
[14:45] <mcbcurator> Just amazing weather today
[14:46] <Lunar_Lander> :) here as well
[14:46] <Lunar_Lander> overcast, but hey, no rain and acceptable temps :)
[14:46] <daveake> About time for your second flight Lunar_Lander :)
[14:46] <Lunar_Lander> that's true :)
[14:46] <Lunar_Lander> almost ready for it
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[14:47] <Lunar_Lander> there had been an issue with the honeywell humidity sensors, claiming about 25% humidity in the lab and that bugged me a long time
[14:48] <Lunar_Lander> then I measured with my psychrometer the dry and wet bulb temperatures
[14:48] <Lunar_Lander> turned out that the sensors were right
[14:48] <Lunar_Lander> got about 25%
[14:48] <daveake> :)
[14:50] <fsphil> jpeg does not like this town
[14:52] <mcbcurator> going to try moving the chase car. still in parking lot of launch site. hopefully driving through town doesnt ruin rx for a few minutes. You guys would miss packets of the Texas Show.
[14:54] <Reb-SM3ULC> mcbcurator: nice pics. how fast downlink?
[14:54] <mcbcurator> 300 baud
[14:55] <daveake> need more black sky then it'll speed up
[14:55] <Reb-SM3ULC> the baudrate? ;)
[14:56] <daveake> er no :p
[14:58] <mcbcurator> cam is tilted slightly down
[15:01] <Reb-SM3ULC> mcbcurator: what's it called, oblique picture?
[15:01] <Lunar_Lander> yes
[15:03] <fsphil> should become less detailed with altitude
[15:03] <mattbrejza> needs ARQ...
[15:04] <mattbrejza> texas isnt quite as in drought conditions as CA
[15:13] <SpacenearUS> New vehicle on the map: 03KA8HUZ-10 - 12http://tracker.habhub.org/#!qm=All&q=KA8HUZ-10
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[15:14] <SpacenearUS> New vehicle on the map: 03KA8HUZ-15 - 12http://tracker.habhub.org/#!qm=All&q=KA8HUZ-15
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[15:22] <UpuWork> mcbcurator are you recieving the APRS ? We think it may be too quiet
[15:22] <UpuWork> would expect more igateing
[15:23] <SpacenearUS> New vehicle on the map: 03NM5SS-6 - 12http://tracker.habhub.org/#!qm=All&q=NM5SS-6
[15:24] <Reb-SM3ULC> mcbcurator: receiver right next to tv/fm-tower?
[15:25] <SpacenearUS> New vehicle on the map: 03NM5SS-10 - 12http://tracker.habhub.org/#!qm=All&q=NM5SS-10
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[15:30] <pc1pcl> doesn't look like too many igates in that area, if I'm interpreting the aprs.fi map correctly..
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[15:33] <mcbcurator> that reciever position is my chase car. Its not actually where the map shows
[15:33] <mcbcurator> and yeah, iI think we're low on igates
[15:35] <pc1pcl> lots of weatherstations though ;) if you monitor the aprs frequency on e.g. a handheld, is it very busy (which might mean the balloon transmissions drown in other peoples' signal), or pretty clear and you can hear the balloon beacon just fine?
[15:39] <Reb-SM3ULC> mcbcurator: start chasecar-"app" in your phone?
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[15:40] <fsphil> ssdv getting patchy too
[15:41] <Reb-SM3ULC> fsphil: the killer-thing with ssdv.. able to have multiple receivers.. :)
[15:42] <fsphil> yea
[15:42] <fsphil> and at least one with good internet
[15:45] <SpacenearUS> New position from 03K9BIG-11 after 032 days silence - 12http://tracker.habhub.org/#!qm=All&q=K9BIG-11
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[16:10] <mcbcurator> signal is just too quiet
[16:10] <mcbcurator> I can see it on my waterfall, but no actual data. Hopefully it comes back as it should burst soon or already
[16:11] <Geoff-G8DHE-M> Are you undneath it, in the null ?
[16:11] <mcbcurator> maybe
[16:12] <mcbcurator> been 13 minutes since last position
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[16:15] <fsphil> volume on the PC ok?
[16:17] <mcbcurator> yes. i can see quieting. just not data. switching to beam antenna
[16:20] <mcbcurator> yes, under it. Beam antenna is working magically
[16:20] <mcbcurator> And I can see the fucking thing!
[16:21] <daveake> For one of mine we drove away from the balloon just to get a better signal
[16:21] <mcbcurator> just watched it burst with binoculars. That was awesome
[16:22] <daveake> oh nice
[16:22] <arko> no way
[16:22] <arko> seriously?
[16:22] <mcbcurator> yes
[16:22] <mcbcurator> really amazing
[16:22] <arko> wow
[16:22] <arko> hats off man
[16:22] <daveake> someone recorded a burst with a telescope once
[16:22] <arko> i've never seen that
[16:22] <mcbcurator> I saw that!
[16:22] <daveake> nor me
[16:22] <arko> daveake: woah! linky?
[16:22] <mcbcurator> It's terrifically clear here
[16:22] <daveake> no idea but I'll google
[16:22] <arko> heh kk
[16:23] <daveake> https://www.youtube.com/watch?v=0lG3zr0yaJw
[16:23] <daveake> 2:15
[16:24] <craag> That is awesome
[16:24] <craag> I may have got a shot of a balloon bursting
[16:24] <craag> if it wasn't for someone turning up at the wrong moment ;)
[16:25] <arko> WOW
[16:25] <arko> daveake: that's amazing!
[16:25] <arko> :D
[16:25] Action: daveake wanders off
[16:26] <mcbcurator> luckily the same guy who loaned the nice radio loaned a huge beam antenna
[16:27] <craag> My brother has some more expensive camera kit this year - will keep an eye out for a chance to steal it and have another go this year
[16:29] <craag> daveake: The cold chocolate digestives were worth it ;)
[16:29] <daveake> hah :)
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[16:51] <Geoff-G8DHE-M> !flights
[16:51] <SpacenearUS> 03Geoff-G8DHE-M: Current flights: 03Museum of the Coastal Bend launch 1 10(03d4)
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[18:12] <mcbcurator> Balloon recovered!
[18:13] <Lunar_Lander> congratulations
[18:13] <mcbcurator> Incredible luck. The rancher was a friend. I had his cell number already!
[18:13] <Lunar_Lander> cool!
[18:14] <mcbcurator> Upu, daveake: local hams say they were hearing the APRS every couple minutes. No igates in the region though.
[18:15] <mcbcurator> I'd say the APRS PITS board is flight certified.
[18:17] <Reb-SM3ULC> mcbcurator: a mobile simple igate with rpi, rtl-dongle and 3g-dongle could be usefull?
[18:18] <mcbcurator> Yes. This has convinced the local ham club they need to figure out igating
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[18:22] <jet_> Hi guys, I was wondering if you could help me out with some camera advice?
[18:22] <jet_> I'm planning to launch a payload containing 2 cameras, and I found the Midland XTC400: http://www.amazon.co.uk/Midland-XTC-400-Action-Camera-Sensor/dp/B00E5CRVDS which has great battery life at a good cost (I intend to test this in the freezer)
[18:22] <jet_> Do you guys have any advice or similarly priced recommendations?
[18:24] <chrisstubbs> gopro + battery bacpac is good but $$$
[18:24] <daveake> mcbcurator Hams getting connected to the internet? Whatever next? :)
[18:26] <jet_> chrisstubbs; Our balloon launch is crowdfunded and can't really extend to the cost of two gopros with bacpacs!!!
[18:26] <chrisstubbs> Mobius is good and cheap but I think they kick out a bit of interference with GPS
[18:27] <chrisstubbs> so use caution
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[18:28] <mcbcurator> The hams are funny. "Do you have 2m voice?" "No, text or call me." "2m voice would be easier."
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[18:29] <jet_> I saw the mobius. I wouldn't want the GPS interference as I'm using telemetry (possibly with SPOT), plus the mobius has appalling battery life (I'm looking to constantly record video)
[18:30] <SpeedEvil> You may want to consider a sticky-out vane, to kill spin
[18:30] <mcbcurator> OH. Speaking of SPOT. We had a backup Spot Trace, and it worked like a dream. Even though the payload was sideways.
[18:31] <mcbcurator> Gave a position within feet.
[18:31] <jet_> I was going to get one of those... they good?
[18:31] <jet_> SpeedEvil: How do you mean?
[18:31] <mcbcurator> One data point suggests yes. But I make no warranty. Have redundancy!
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[18:32] <SpeedEvil> jet_: payloads tend to spin, without external constraints - exactly how much varies
[18:33] <jet_> I was going to have some sort of light pole (vane???) sticking out slightly with a piece of card recording our backers' names and images during the flight
[18:34] <mcbcurator> Also, my spot was simply taped to the inside of my box. No fancy gimbals or anything.
[18:34] <SpeedEvil> jet_: that'll help
[18:36] <SpacenearUS> New vehicle on the map: 03KF5OUQ - 12http://tracker.habhub.org/#!qm=All&q=KF5OUQ
[18:40] <jet_> So, would there be any problems using a midland xtc400?
[18:40] <jet_> (Providing that I tested it by recording constantly in a freezer to make sure it works at low temperatures)
[18:42] <christop_> what sort of battery life you expecting?
[18:42] <jet_> The camera lasts 5 hours in normal conditions and it's reviewed well so it does that
[18:43] <christop_> thats pretty impressive, worth testing at low temp as you have suggested.
[18:43] <jet_> I'd only need 3 actual hours of recording, which is why I need to make sure it works at -18 degrees (freezer temp)
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[18:43] <jet_> And then insulate it well in the payload!
[18:45] <christop_> We used a mobius the first time, was great for heating up the payload :-)
[18:46] <jet_> How long did it last?
[18:46] <christop_> We used external power, 6 AA to power the mobius and PI
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[18:48] <christop_> We liked the mobius due to cost and weight. Even adding 2 extra AAs it was still under 80g (if i recall correct)
[18:48] <jet_> Good quality?
[18:49] <jet_> It claims to be 1080p, although I'm guessing the actual quality in MP and stuff isn't as good.
[18:50] <jet_> Also, while I'm here... what cord would you recommend I get?
[18:50] <jet_> The preference seems to be braided nylon. I plan to launch a payload of around 1kg, would 1.5mm cord suffice?
[18:50] <christop_> It was pretty good, video was more than acceptable. It came down to best bang for buck at the time.
[18:54] <jet_> 2mm nylon cord?
[18:54] <DL7AD> good evening ;)
[19:02] <DL7AD> does anyone know the differences between MAX7 and MAX8?
[19:03] <mattbrejza> max8: gps + glonass at the same time
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[19:07] <DL7AD> mattbrejza: okay. anything about power consumption?
[19:08] <jet_> Guys, could I use a luggage scale for measuring a balloon's lift?
[19:08] <jet_> A lot of people seem to call them fishing scales.
[19:09] <Vaizki> yes you could, possibly even to the nearest kilogram
[19:09] <mattbrejza> DL7AD: dont think theres much in it
[19:10] <DL7AD> mattbrejza: hm okay. anyway i dont have any other option than MAX8. MAX7 isnt available anymore
[19:11] <Vaizki> I think they are pin-compatible anyway
[19:12] <adamgreig> (they are)
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[19:33] <lcollins> is there any kind of tutorial/directions out there about what I need to do to make a habduino antenna for the HX1?
[19:35] <lcollins> also, I've tried adjusting the baud rate and I keep getting jibberish out of the serial port when running habduino v4
[19:35] <lcollins> is that normal?
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[19:37] <daveake> Just set to whatever baud rate the source code says
[19:38] <daveake> and make sure you've chosen the correct board type in the Arduino IDE
[19:42] <lcollins> yeah, both are set to 1200, and I've selected UNO
[19:42] <lcollins> but I'm still getting a bunch of funky characters
[19:44] <daveake> I'm no expert, but I just looked at the source code, and it's 9600 baud
[19:45] <daveake> 1200 is the APRS rate
[19:45] <daveake> Anyway, you won't get anything meaningful out of that port, as it's used to send binary data to the GPS
[19:46] <lcollins> haha, I'm really no expert
[19:46] Nick change: fl_0|afk -> fl_0
[19:46] <lcollins> though I think we tried 9600 as well
[19:46] <lcollins> but probably we're just seeing the binary data
[19:46] <daveake> s/probably/definitely
[19:47] <lcollins> right
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[19:59] <craag> o/ NSPACE1
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[20:01] <NSPACE1> Hi Guys, tips for a high altitude record using a 1200gr balloon and hydrogen gas. Payload tips, parachute, etc.
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[20:01] <NSPACE1> hi Craag, on this channel now. Thank you.
[20:02] <mcbcurator> Argh. Totally stupidly, I forgot to enable GPS/telemetry logging on the pi. What a maroon.
[20:02] <daveake> swap the 1200 for a 1600?
[20:02] <daveake> A maroon? :)
[20:02] <daveake> face gone red ?
[20:03] <mcbcurator> I've got the 274 sentences that habhub got, thankfully
[20:03] <mcbcurator> It didn't fill anything in for speed - any easy way to calculate speed from the csv of telemetry sentences?
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[20:07] <Lunar_Lander> evening craag
[20:09] <SpeedEvil> mcbcurator: It's easy to do as simple trig
[20:09] <Jededu> daveake any luck
[20:09] <SpeedEvil> y side is longitude - which is simply a constant multiplier, then latitude, which is a constant times sin(longitude)
[20:10] <SpeedEvil> Or something like tha, then pythagorus
[20:14] <daveake> Jededu The "Pi-Sky" thing? It works. I tested it here. Several times.
[20:15] <Vaizki> well the distance between lines of latitude is constant but not so for lines of longitude
[20:15] <RealBorg> you should use the WGS84 ellipse
[20:15] <daveake> mcbcurator The speed thing got fixed in the main branch a while ago, but not in the APRS branch
[20:15] <RealBorg> can you use perl?
[20:16] <mcbcurator> No.
[20:16] <mcbcurator> I found an excel formula, but now excel just wants to show me blanks instead of actually calculating the thing.
[20:17] <RealBorg> i had to do lat/lon/distance calculations in sql once :-/
[20:17] <Jededu> daveake ok could the fact that its a model A have anything to do with it
[20:17] <Vaizki> mcbcurator: remember that angles (like lat/lon) are radians in excel functions
[20:17] <Vaizki> not degrees
[20:17] <daveake> no
[20:18] <RealBorg> my 2c: use ECEF coordinates
[20:19] <mcbcurator> got it. For some unknown reason the cell text color was white >:(
[20:19] <Vaizki> or maybe just import your track into google earth and let it do the math? :)
[20:19] <mcbcurator> KMLs don't have time values, I thought.
[20:20] <RealBorg> http://forums.esri.com/Thread.asp?c=93&f=992&t=162270
[20:20] <Vaizki> hmm.. really? not that into it but I would have thought you can put in timestamps :O
[20:22] <Vaizki> http://www.gpsvisualizer.com/map_input?form=googleearth
[20:22] <Vaizki> at least that tool has an option to "Add time stamps, if possible"
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[20:29] <mcbcurator> Worked it out in excel
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[20:35] <mcbcurator> Also the gopro missed the landing by about 3 minutes. SD card full.
[20:35] <mcbcurator> Oh well.
[20:39] <Lunar_Lander> :(
[20:49] <SpacenearUS> New vehicle on the map: 03VEGA-I - 12http://tracker.habhub.org/#!qm=All&q=VEGA-I
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[21:08] <mcbcurator> 4 preview shots from today: http://imgur.com/a/sLotq
[21:10] <Lunar_Lander> nice!
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[21:16] <SpacenearUS> New position from 03SPVRI-1 after 039 hours silence - 12http://tracker.habhub.org/#!qm=All&q=SPVRI-1
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[21:51] <Laurenceb> http://cdn.meme.am/instances/500x/61813737.jpg
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[22:12] <fsphil> unusual to see hab photos with so little clouds :p
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[22:49] <Laurenceb> http://i.kinja-img.com/gawker-media/image/upload/s--HpLOp-EM--/c_fit,fl_progressive,q_80,w_636/piyso2agttlqsxjnd0q7.gif
[22:49] <Laurenceb> genius
[23:02] <SpacenearUS> New vehicle on the map: 03DC2EH-9 - 12http://tracker.habhub.org/#!qm=All&q=DC2EH-9
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[23:10] <SpacenearUS> New vehicle on the map: 03DC2EH-1 - 12http://tracker.habhub.org/#!qm=All&q=DC2EH-1
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[00:00] --- Sat May 2 2015