highaltitude.log.20140706

[00:00] <mikestir> it's currently generating a well formed mp4 container file with a working video stream
[00:00] <aadamson> so when are you just going to do a OSD and put it *on the video*
[00:01] <mikestir> subtitles would be better because you can turn the telemetry off then
[00:01] <Reb-SM0ULC> aadamson: the rockblock is a nica solution if you just want to buy something existing
[00:01] <aadamson> well, unless you wanted to see the telemen...
[00:01] <mikestir> I also want to hook the iframes so I can decode them and use them for ssdv as required
[00:01] <aadamson> Reb-SM0ULC, yes, it's kinda big/heavy howerver and none of them work below 18km anyway
[00:02] <Reb-SM0ULC> aadamson: abowe you mean?
[00:02] <aadamson> yeah the rockblock - it's big and heavy, but some are interfacing it to the arduino
[00:03] <aadamson> the STX3 is much smaller, lighter, but either the STX3 or the rockblock only work below 18km
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[00:05] <aadamson> mikestir, if I want to take a 0 - 3v3 pwm signal and center it at .9v and limit it to .3 and 1.6, I'm gonna have to do that with an opamp or somesuch aren't I?
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[00:06] <Reb-SM0ULC> aadamson: some challange would be to build uplink to some cubesat :)
[00:07] <mikestir> aadamson: probably the safest way
[00:07] <aadamson> Reb-SM0ULC, thats actually eaiser that you think
[00:07] <zyp> aadamson, why 0.3-1.6?
[00:07] <aadamson> there are cubesats that are bent pipe transponders and just take a 2mtr or 70cm signal in and put it out on the other
[00:07] <aadamson> zyp, cuze the device I'm feeding it to is a 1.8 device and wants that swing with .9 center
[00:08] <Reb-SM0ULC> aadamson: right.. you could go that way :)
[00:08] <aadamson> Reb-SM0ULC, I'm tring to make aprs work via ISS... we'll see, I may not have a large enough power budget on 2.0v however, but at least the process works, it's just not been beaconed yet :)
[00:09] <Reb-SM0ULC> aadamson: i was thinking along aissat-1 or similar.
[00:09] <aadamson> zyp, I mis-typed it's 20% above 0 and 20% below 1.8v so .2 and 1.6 with a .9 center...
[00:10] <astrobiologist> mikestir thanks for your help earlier today, I eventually got my VFO working but way off its intended frequency range. If you give me your email I'll send you a report :-)
[00:10] <Reb-SM0ULC> aadamson: it's cool idea with iss :) thought iss doesn't come by this far north for me
[00:10] <aadamson> zyp, it's a clock in put
[00:10] <zyp> digital signals doesn't really have a center, so you don't have to care about the 0.9V point
[00:10] <astrobiologist> I will turn in soon and solder it up another day...
[00:10] <zyp> would it be harmful to drive it past 0.2/1.6?
[00:11] <mikestir> astrobiologist: pm email. at least if it's just off frequency you can tune it by adjusting the inductor or capacitor values
[00:11] <aadamson> zyp, I do when this is the LO to a down stream radio - yes, tehcnically you are right, I just have to account for the frequency shift, no it can be 0 to 1.8 it will just clip
[00:11] <zyp> then just do a resistor voltage divider from 3.3V to 1.8V
[00:12] <aadamson> yeah, that is an option.
[00:12] <mikestir> aadamson: I was assuming you meant a filtered PWM, analogue signal. do you mean you want to constrain the pulse train to between 0.3 and 1.6 V?
[00:12] <astrobiologist> mikestir it's waaaay off. but I mainly needed it just to demonstrate VFOs for my intermediate license exam. still, puzzling!
[00:13] <aadamson> mikestir, I'm just thinking ahead to a different project. the DPLL wants .9 cross over, .3 low, and 1.5 high....
[00:14] <aadamson> keeping the pwm center at .9v is just easier to deal with so I'd need to scale a 3v3 signal down
[00:14] <aadamson> I can control the limits in the pwm sin if needed and for that meter the center
[00:15] <aadamson> mikestir, no you were correct, I want the filtered, limited, centered PWM analog signal :)
[00:15] <aadamson> the other is already handled
[00:16] <aadamson> but as noted, it's a down the road project
[00:16] <aadamson> it may be worth just doing the opamp anyway, then I can do a steeper pwm filter at the same time
[00:16] <mikestir> if you can find some really low voltage drop shottkey diodes (<0.3V) you could do it with resistors
[00:17] <aadamson> I think I have those already... bat760's are right in that area for drop and I use them elsewhere
[00:17] <mikestir> set a bias for the 0.9V mid point then arrange the diodes so that you can source/sink in/out of the pwm pin via two different resistors
[00:17] <Maxell> EDUHAB2 and BAHUDE after we had a sleep right?
[00:17] <mikestir> then select those resistor values to source or sink the right amount of current to pull the bias
[00:18] <aadamson> yep, makes sense
[00:19] <astrobiologist> good night all
[00:19] <astrobiologist> all/quit
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[00:22] <mikestir> yes I'm off too. gn
[00:22] <Maxell> gn
[00:22] <aadamson> nite all
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[06:06] <Reb-SM0ULC> ello
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[06:36] <SA6BSS-Mike> hey
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[07:24] <daveake> f
[07:26] <daveake> ping aadamson
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[07:29] <Boelle_DK> morning... any chance that there are some 3D printer experts arround.... have an issue with extra fan on a ramps 1.4 board
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[07:48] <oh6gzt> gm
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[08:12] <Boelle_DK> sigh......
[08:13] <Boelle_DK> asking this Q all over the place and first direct answer is to replace the PNP with a mosfet
[08:13] <Boelle_DK> pnp is rated 7A
[08:13] <Boelle_DK> and fan takes 0.09
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[08:14] <tweetBot1> @thecraag: Anyone gonna be around to track this morning? ;) #ukhas http://t.co/q5qrbQuAYO
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[08:16] Action: mfa298 expects there to be several decoders whilst this is still on the ground
[08:16] <mfa298> at least until we keyup the 70cms
[08:16] <malclocke> Another floater out of Melbourne - VK3YT-12
[08:17] <LeoBodnar> is it really floating?
[08:17] <malclocke> oh ... up and down already :(
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[08:40] <gonzo_m> have i missed a flight?
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[08:44] <Reb-SM0ULC> still have sp3osj with a nice clear signal
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[08:54] <Neil_M0CJM> morning all
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[08:54] <Neil_M0CJM> Can anyone help, I see CRACKLE is right above me but what its flight detils etc
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[08:55] <Steve_G0TDJ> I've been watching that too Neil_M0CJM - No info as far as I can see - Could just be a test
[08:56] <Neil_M0CJM> Wow, went right over the top of me prob may have seen it :-)
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[08:57] <Steve_G0TDJ> It's not flying
[08:58] <Steve_G0TDJ> It's just tracking - The telemetry is being received and relayed to SNUS
[08:58] <Neil_M0CJM> oh yeah only at a few hundred metres :-)
[08:58] <Steve_G0TDJ> COuld be a test, could be prep for a launch
[08:58] <LeoBodnar> are you looking at a thin red line?
[08:59] <Neil_M0CJM> am picking up something strong on 434.125
[08:59] <Steve_G0TDJ> Could be it
[08:59] <Steve_G0TDJ> pind DL7AD
[08:59] <Steve_G0TDJ> ping even
[08:59] <Steve_G0TDJ> HI Leo :-)
[08:59] <LeoBodnar> hey Steve! :)
[08:59] <Steve_G0TDJ> Nice flight (again!) :D
[09:00] <LeoBodnar> ta!
[09:02] <LeoBodnar> i think crackle is craag's payload and is due to launch soon. 0x17 and DL7AD are nearby because the launch site is right at the base of the web SDR
[09:02] <Neil_M0CJM> Any idea whats TXing on 434.125 this morning?
[09:02] <Steve_G0TDJ> Cheers Leo - I'm tweeting with craag. He just said "a bursty foil Pico this morning I hope. Just need to find more helium"
[09:03] <Steve_G0TDJ> I've asked him for the details
[09:03] <Neil_M0CJM> cool
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[09:04] <fsphil> Neil_M0CJM: what does it sound like?
[09:04] <Steve_G0TDJ> Thaks for the heads up Leo, I was going to ask DL7AD what was going on :-)
[09:04] <Steve_G0TDJ> Hi Phil
[09:04] <Neil_M0CJM> usual HAB sound, rtty constant
[09:05] <fsphil> any decodes?
[09:05] <Steve_G0TDJ> Can you decode Neil?
[09:05] <Steve_G0TDJ> snap
[09:05] <LeoBodnar> Here's from CRACKLE payload doc: 434.125MHz USB RTTY 100 baud 300Hz shift ASCII-7 no parity 2 stop bits
[09:05] <fsphil> ah that's it
[09:05] <Steve_G0TDJ> There you go
[09:05] <Neil_M0CJM> Ah leo answers that one
[09:05] <fsphil> 100 baud, whoa slow down
[09:05] <fsphil> the bits are gonna fly everywhere!
[09:06] <Neil_M0CJM> Got it nice decodes from crackle
[09:06] <LeoBodnar> nothing to stop them?
[09:06] <Darkside> bits and pieces
[09:06] <Neil_M0CJM> $$$$CRACKLE,841,090610,5129341,-116330,174,6,146*AADF
[09:06] <Steve_G0TDJ> You're on SNUS Neil
[09:06] <Neil_M0CJM> :-)
[09:06] <Steve_G0TDJ> 100bd, that's different
[09:07] <Neil_M0CJM> Seemed fast :-)
[09:07] <Steve_G0TDJ> No flght docs it seems
[09:07] <fsphil> 50 is a bit slow tbh
[09:07] <fsphil> not sure why it became a standard
[09:07] <LeoBodnar> he's asked for approval but it's Sunday morning
[09:07] <LeoBodnar> Baudot?
[09:08] <Neil_M0CJM> I bet I know the laybe he is parked in with CRACKLE
[09:08] <Neil_M0CJM> layby
[09:08] <Steve_G0TDJ> You could go say Hello Neil :-)
[09:08] <LeoBodnar> fsphil can you approve docs?
[09:08] <fsphil> does SNAP and POP know about this?
[09:08] <Neil_M0CJM> i might do :-)
[09:08] <fsphil> afraid not LeoBodnar
[09:08] <Neil_M0CJM> i got to pop a mate to station on 30 mins so may go on way back
[09:09] <Steve_G0TDJ> Coolio - NFD?
[09:09] <LeoBodnar> Darkside is on it
[09:09] <Darkside> approvd
[09:10] <LeoBodnar> ta!
[09:10] <Steve_G0TDJ> Cheers!
[09:10] <Neil_M0CJM> Do any of you guys have issues with the SNUS site not drawing maps properly
[09:10] <Steve_G0TDJ> Confirmed in DLFLdigi
[09:10] <Steve_G0TDJ> Always Neil LOL
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[09:11] <Steve_G0TDJ> I always loose the top line with the tabs (Firefox)
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[09:11] <Neil_M0CJM> Ah hthough ti was just me in Chrome, big white blocks undrawn and sometimes no tabs
[09:11] <mikestir> yeah I've seen that too
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[09:12] <Steve_G0TDJ> I occasionally get stuff like that.
[09:12] <fsphil> usually works after a few refreshes
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[09:12] <arjun12> I'm in the UK, do I need a cutdown device
[09:12] <fsphil> no
[09:13] <fsphil> it's not a requirement. but it can be useful
[09:13] <arjun12> okay, thanks
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[09:14] <amell> do we have a flight&?
[09:15] <Steve_G0TDJ> Phil (craag) is hoping to depending on He supply
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[09:15] <LeoBodnar> Do Poles go for the Pole?
[09:15] <amell> so what is broadcasting on 434.125?
[09:15] <Steve_G0TDJ> THat is his payload
[09:15] <amell> oh.
[09:16] <Steve_G0TDJ> Neil received some telemetry
[09:16] <LeoBodnar> Arctic challenge II
[09:16] <amell> must be right on top of it.
[09:16] <Steve_G0TDJ> ;-)
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[09:16] <amell> LeoBodnar: sounds good. mission to reach 89.9999 degrees north?
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[09:20] <Neil_M0CJM> Yeah its onlu like 2 miles north from me. I presume its on the ground and hopfully going up soon??
[09:21] <Steve_G0TDJ> Neil_M0CJM: I believe Phil is trying to source some more Helium for the launch. He had a leaky canister.
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[09:21] <Neil_M0CJM> You say he is on twitter? Can you pass me his username?
[09:22] <Steve_G0TDJ> Crump - Twitter @thecraag
[09:24] <Steve_G0TDJ> Phil Crump @thecraag Dunno why I missed his first name....
[09:25] <Neil_M0CJM> ok will try followhim
[09:25] <Steve_G0TDJ> I just found you :-)
[09:26] <Steve_G0TDJ> @Project_HAB in case you were wondering
[09:28] <Neil_M0CJM> Following ;-)
[09:28] <Steve_G0TDJ> CFM
[09:28] <Neil_M0CJM> Rightm, got a quick railaway station drop off to do, back in 30
[09:28] <Herman-PB0AHX> GM all on wat time crackle go up ??
[09:29] <Steve_G0TDJ> See if you can DF Phil :-)
[09:29] <db_g6gzh> Steve_G0TDJ: You expressed interest in photos from the BALYOLO recovery yesterday. If you didn't spot the link earlier it's http://album.dbrooke.me.uk/2014-07-05_BALYOLO/
[09:29] <Steve_G0TDJ> Cheers :-)
[09:30] <Steve_G0TDJ> Herman-PB0AHX: craag is looking for some more Helium to launch with
[09:30] <Herman-PB0AHX> Steve_G0TDJ: tnx info
[09:30] <Steve_G0TDJ> NP
[09:30] <daveake> I have some, but that's not useful right now :)
[09:30] <daveake> :(
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[09:33] <Steve_G0TDJ> I dunno daveake, you're not THAT far away ;-)
[09:33] <daveake> :)
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[09:34] <Steve_G0TDJ> db_g6gzh: I'm amazed that beer survived 10m/s impact
[09:35] <mfa298> finding some scrollback. its a field rather than layby
[09:36] <mfa298> and currently lack of gas
[09:36] <Steve_G0TDJ> mfa298: We wait in hope
[09:37] <mfa298> its only a pico and probably fill to burst so may not get that far or high
[09:37] <mfa298> assuming craag can find some gas in town centre
[09:38] <daveake> raid a kid's party
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[09:39] <mfa298> his vehicle has just arrived back. shall wait to see if theres gas
[09:39] <Steve_G0TDJ> *crosses fingers*
[09:40] <daveake> *fuses hydrogen*
[09:40] Action: mfa298 sees gas
[09:40] <daveake> :)
[09:40] <db_g6gzh> Steve_G0TDJ: the beer was still frozen
[09:40] <Steve_G0TDJ> Cool!
[09:40] <amell> mfa298: are you on site or something?
[09:40] <Steve_G0TDJ> db_g6gzh: Wow, how interesting
[09:41] <daveake> db_g6gzh In a can?
[09:41] <amell> frozen beer? no. in a pint glass
[09:41] <Steve_G0TDJ> Plastic container I think Dave
[09:41] <db_g6gzh> scaled down pint glass 8-)
[09:41] <amell> looks like it has clingfilm over the top of it.
[09:41] <mfa298> amell: I'm there as well (we're doing the contest)
[09:41] <fsphil> mildly radiated frozen beer
[09:41] <amell> contest for what?
[09:42] <Steve_G0TDJ> daveake: db_g6gzh posted a link to some pics higher up
[09:42] <daveake> ta
[09:42] <mfa298> VHF NFD
[09:42] <db_g6gzh> specifically http://album.dbrooke.me.uk/2014-07-05_BALYOLO/tn/P1010817.JPG.html
[09:43] <fsphil> check out the van
[09:43] <Ron_G8FJG> mfa298 station dallsign?
[09:43] <Steve_G0TDJ> All liveried up
[09:43] <Ron_G8FJG> callsign
[09:43] <db_g6gzh> there was a gopro pointed at the beer so there should be video of what happened to it
[09:44] <mfa298> G3KMI
[09:45] <Steve_G0TDJ> I think we worked them last year DE G8TNK/P
[09:46] <Ron_G8FJG> not worked KMI ,,,,,,on 70cms?
[09:46] <Steve_G0TDJ> It would have been 2m
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[09:50] <mfa298> we're on 2 and 70
[09:50] <LeoBodnar> is beer project an "educational outreach" thing?
[09:50] <LeoBodnar> educational outreach is like bullshit bingo squared
[09:50] <fsphil> you can't be getting that much range on 70cm
[09:50] <Steve_G0TDJ> It says words to that effect on the van Leo
[09:51] <Steve_G0TDJ> fsphil: I'm pretty sire we could work them beam-to-beam from SE London
[09:51] <Steve_G0TDJ> sure
[09:54] Action: mfa298 is surprised at the lack of websdr listeners. Seeing as the balloon is only a couple of hundred meters away from it.
[09:54] <Upu> all sorted ?
[09:55] <Steve_G0TDJ> Upu: Phil found some He if that's what you mean :-)
[09:55] <db_g6gzh> LeoBodnar: more like company PR it seems http://www.bucksherald.co.uk/news/more-news/pint-of-beer-set-for-lift-off-into-space-1-6157794 (space again, one other article said orbit!)
[09:56] <Upu> the approval :)
[09:56] <Steve_G0TDJ> Oh yes, that too Darkside sorted cheers
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[09:57] <S_Mark_> Upu do you approve the google group messages?
[09:57] <Upu> I do
[09:57] <Upu> I can
[09:57] <S_Mark_> Thanks
[09:57] <Upu> something need approving ?
[09:57] <Upu> and did you need me last night ?
[09:57] <amell> we always need you
[09:58] <Steve_G0TDJ> seconded
[09:58] <S_Mark_> PM
[09:58] <Upu> lol
[09:59] <Upu> anyone still on the fence about coming to the conference ?
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[10:01] <tweetBot1> @thecraag: Ready to go! Just gotta prep the chase car. #ukhas http://t.co/FRc11jXB1u
[10:02] <amell> is that a D50 or D30 can?
[10:02] <craag> 0.33 BOC
[10:02] <craag> dsiposable
[10:02] <craag> (that was the nearly empty one :( )
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[10:03] <db_g6gzh> a launch with intent
[10:03] <number10> good idea using a tent
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[10:04] <jcoxon> ping Upu
[10:04] <Upu> hey jcoxon
[10:04] <Steve_G0TDJ> number10: They are at a VHF National Field Day location
[10:05] <number10> plenty of potential trackers then Steve_G0TDJ
[10:05] <Steve_G0TDJ> LOL Yeah, we'll get them all to tune UHF
[10:05] <Neil_M0CJM> Back
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[10:06] <Steve_G0TDJ> Neil_M0CJM: Latest news, craag found some more He and is prepping for launch
[10:06] <Neil_M0CJM> I cant hear sigs anymore??
[10:06] <db_g6gzh> if they can hear it on-site then they clearly aren't running enough power on the 70cm contest station 8-)
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[10:07] <craag> Neil_M0CJM: See last tweet for why ;)
[10:07] <Neil_M0CJM> ok need to find phone
[10:07] <craag> link is above on tweetbot
[10:08] <craag> but basically: tracker is now ~10cm from ground
[10:08] <Steve_G0TDJ> Neil_M0CJM: http://t.co/FRc11jXB1u
[10:08] <Neil_M0CJM> Ahh cool I can still hear it very faintly though
[10:12] <Steve_G0TDJ> It would be nice if the current prediction was correct (unlikely) it would go straight over me
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[10:14] <Boelle_DK> mikestir: Q... i might have some that can help me programming my listning station project.. and i saw that source code for decoder can be build for the pi... but can it do the trick?
[10:15] <mikestir> which decoder?
[10:17] <mfa298> Boelle_DK: do you mean dl-fldigi on the Pi ?
[10:17] <Boelle_DK> yep...
[10:17] <Boelle_DK> sorry... could not spell the name
[10:17] <Boelle_DK> but its just thoughts so far
[10:17] <mfa298> If that's what you mean it doesn't work - unless you can do some magic and make it work on the GPU (Unlikely)
[10:17] <tweetBot1> @jamescoxon: @Kevin_Fong @Dr_Lucie UKHAS Conference in London, http://t.co/F6MkGwqf2d talks and workshops on balloons, rockets, satellites + more #ukhas
[10:17] <Boelle_DK> bummer...
[10:18] <jcoxon> hey all we are doing a ukhas conference push
[10:18] <jcoxon> would appreciate tweets etc
[10:18] <jcoxon> need more people to come along!
[10:18] <jcoxon> http://wiki.ukhas.org.uk/general:ukhasconference2014
[10:18] <mfa298> Raspberry Pi is too low powered for a lot of useul stuff
[10:18] <Boelle_DK> yep...
[10:18] <Boelle_DK> i remember now
[10:18] <SpeedEvil> I've run fldigi on my nokia n900
[10:19] <SpeedEvil> It ran fine
[10:19] <Steve_G0TDJ> jcoxon: I'll post it on my social networks
[10:19] <jcoxon> thanks
[10:19] <SpeedEvil> - it was an old version, and the waterfall display diddn't work very well, the spectrum display was better
[10:19] <mfa298> you can compile and run dl-fldigi on the Pi but there's not enough CPU to actually decode anythign
[10:20] <mfa298> I think people have just about managed the base fldigi code but I think the dl- extensions just pushed it too far
[10:20] <Boelle_DK> its a big bummer..... but will ask the guy at local hackerspace if he can work on the beagle bone..
[10:21] <Boelle_DK> people use the waterfall to adjust the freq as it drifts right?
[10:21] <Boelle_DK> if not i could have lived without that
[10:22] <Steve_G0TDJ> jcoxon: Would you like me to share my post in the RSGB group on facebook?
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[10:22] <SpeedEvil> you don't need the waterfall
[10:22] <Neil_M0CJM> ooh sigs loud again :-)
[10:22] <tweetBot1> @jamescoxon: @jgrahamc UKHAS Conference in London, http://t.co/F6MkGwqf2d & talks and workshops on balloons, rockets, satellites + more #ukhas
[10:22] <amell> 24fps/7.3m/s - safe landing?
[10:22] <SpeedEvil> However - it makes finding signals just above the signal-noise much easier
[10:22] <jcoxon> Steve_G0TDJ, sure
[10:22] <Steve_G0TDJ> Willdo
[10:22] <SpeedEvil> There are many, many alternatives t
[10:22] <SpeedEvil> othe pi
[10:23] <amell> given its 3kg i feel its a bit fast
[10:23] <Ron_G8FJG> CJM dial freq?
[10:23] <SpeedEvil> https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-MICRO/open-source-hardware as an example
[10:23] <Neil_M0CJM> 434.124.36
[10:23] <Ron_G8FJG> ta
[10:24] <Boelle_DK> SpeedEvil: not bad
[10:24] <amell> post UKHAS conf in the BMFA facebook group
[10:24] <amell> I can do this if i have link to collateral and image
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[10:24] <Steve_G0TDJ> jcoxon: Posted
[10:24] Nick change: jdiez -> Guest80794
[10:25] <tweetBot1> @AMSAT_UK: @AnthonyStirk M0UPU + @daveake M0RPI presentation on @pitsproject at #UKHAS Conference London Aug 16 http://t.co/wPo2HgFgkd #hamradio #hamr
[10:26] <mfa298> crackle up
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[10:28] <Ron_G8FJG> see the sigs no decodes yet
[10:29] <Steve_G0TDJ> Nice slow asccent, is Phil going for float?
[10:29] <fsphil> don't think so
[10:29] <mfa298> hoping for burst
[10:29] <Steve_G0TDJ> I thought he mentioned a chase car
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[10:31] <gonzo_m> freq?
[10:31] <mfa298> 434.125
[10:31] <gonzo_m> ta
[10:32] <Herman-PB0AHX> lets go receiving CRACKLE
[10:33] <Maxell> yes Herman-PB0AHX good plan I also have the X-30 on a mast
[10:33] <Maxell> all I have to do is get the mast on the roof :P
[10:33] <Herman-PB0AHX> Maxell: gl and we hope same als yesterday receiving lot of telematrie here
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[10:34] <Maxell> habs yesterday? :O
[10:34] <Maxell> I was in Friesland :P
[10:34] <Boelle_DK> SpeedEvil: damm good board.... reading manual now... just need to load different os... comes with android standard
[10:34] <Herman-PB0AHX> Maxell: i use the big antennes today for balon receiving
[10:35] <Herman-PB0AHX> Maxell: yes yesterday a good flight from BALYOLO lot of data received
[10:35] <Maxell> nice!
[10:36] <Maxell> Too bad I missed it :)
[10:36] <Maxell> ok going to install the rx brb
[10:36] <Ron_G8FJG> greens but says 6892km distant
[10:36] <Herman-PB0AHX> ok
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[10:39] <Neil_M0CJM> Is it on its way?
[10:39] <Maxell> gps lock without dot/comma?
[10:39] <Upu> raw output of the UBX
[10:40] <Upu> its valid but confuses dl-dlfigi, I think its fixed in some unreleased versions
[10:40] <db_g6gzh> nearly got it ... $$CACKLE,1864 8-)
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[10:42] <Steve_G0TDJ> PArtials here too
[10:43] <Neil_M0CJM> Just popped outside for a visual but nowt seen
[10:43] <Herman-PB0AHX> wow red lines $$$$CRACKLE,1827,103654,5129297,-11@@(@`0B@@w` PB@-|h @ (@a@E
[10:43] <Steve_G0TDJ> Neil_M0CJM: Almost 2.5k up
[10:43] <Herman-PB0AHX> $$$$CpACV1899,1043s8,5128969,-106507,2293,6,139*E]HY
[10:44] <Maxell> wowo
[10:44] <Maxell> might not even be able to track today... Caught signal 6
[10:44] <Maxell> Aborting dl-fldigi due to a fatal error.
[10:44] <Herman-PB0AHX> hu
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[10:45] <Steve_G0TDJ> Green :-)
[10:45] <Herman-PB0AHX> some times good bursts from crackle here
[10:45] <Maxell> Herman-PB0AHX: nice duct
[10:45] <Maxell> yesterday also good 2 meter tropo
[10:45] <Herman-PB0AHX> i think reflektions from someting
[10:46] <Steve_G0TDJ> mfa298: Is there going to be a tracker in the chase car?
[10:46] <db_g6gzh> I struggle with local ISM at the lower end of the band so need a reasonably good signal to get a full sentence
[10:46] <db_g6gzh> needs more (some) FEC 8-)
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[10:49] <Geoff-G8DHE> http://360.g8dhe.net/HAB_Flights/2014_Flights/CRACKLE_20140706/
[10:49] <Steve_G0TDJ> Signal gone weak
[10:51] <Maxell> Also nice 0, 0 GPS jumps
[10:54] <Steve_G0TDJ> $$$$CRACKLE,2006,105334,5,0,0,0,136*2A7F
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[10:56] <kartik> anyone around?
[10:56] <Upu> 177 of us yes
[10:56] <LazyLeopard> ;)
[10:56] <kartik> just wondering if anyone knows how accurate the CUSF predictor is
[10:57] <kartik> because over the past few days
[10:57] <kartik> the forecast for the 12th of july has changed
[10:57] <kartik> a gigantic amount
[10:57] <Boelle_DK> SpeedEvil: hats off for that find... and yes its a bit more than a pi or beagle bone... but not that much... and its more powerfull for sure... could even to some extent use it as a full be :-/
[10:57] <Upu> its as accurate as the source data from NOAA is
[10:57] <jcoxon> it gets more accurate closer to the time
[10:57] <Upu> and its accuracy decreases further from the time and if the conditions are changeable
[10:58] <Upu> at the moment the weather is pretty changeable
[10:58] <kartik> so would you say the forecast now is reliable enough within say a 20 mile radius? or should i just hang in there and wait a few more days
[10:58] <Upu> its usually good for +/- 5 miles 12 hours before launch
[10:58] <Boelle_DK> now i could just wish that dl-fldigi could be used to control an yagi and not have to run habrotate on the side
[10:58] <Geoff-G8DHE> Depends where in the world you are!
[10:58] <Upu> usually
[10:58] <Maxell> always check the hour before you launch if you are still confortable with it
[10:59] <Upu> but all depends on you getting the ascent rate, decent rate and burst altitude correct as well
[10:59] <Upu> quite a few variables
[10:59] <Upu> I would use it as an advisory and if you are within 10 miles of city center / airport probably wait
[10:59] <Maxell> Boelle_DK: it's free software: make the changes yourself and submit them back so we can all enjoy the new feature!
[10:59] <DutchMillbt> Hi habbers CRACKLE @434.125 ?
[10:59] <Maxell> yes DutchMillbt
[11:00] <Steve_G0TDJ> Roger DutchMillbt
[11:00] <SpeedEvil> Doing several tests - if the path remains similar if you offset the launch site by 5 miles, or raise or lower the burst height and ascent rate, it's more likely to be accurate than if it widely diverges
[11:00] <Maxell> rtty 100 baud
[11:00] <Steve_G0TDJ> 434.125MHz USB RTTY 100bd 7n2 300Hz shift
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[11:01] <Herman-PB0AHX> $$$$CRACKLE,2081,110022,5133888,-96837,3906,6,135*9879
[11:01] <DutchMillbt> thankz maxell / Steve_G0TDJ
[11:01] <kartik> right thanks guys
[11:01] <Maxell> ?!
[11:01] <Boelle_DK> Maxell: only that requires i can program both python and C
[11:01] <Boelle_DK> but would have done so
[11:01] <Maxell> Boelle_DK: no biggie right? :P
[11:01] <kartik> burst calculator is a bit odd - when inputting a target ascent rate, it doesn't actually give you the figures for that rate
[11:02] <LeoBodnar> Boelle_DK are you tracking now?
[11:02] <Boelle_DK> Maxell: if you knew my programming skills you would think a spray from a skunk smells like fresh red roses
[11:02] <Boelle_DK> LeoBodnar: no but plan to... have sourced the SDR dongle
[11:02] <Maxell> ahahaha rather not have that in dl-fldigi
[11:02] <Boelle_DK> need to find a reasonble yagi
[11:03] <LeoBodnar> and you are already whinging about something that does not even exist yet?
[11:03] <Neil_M0CJM> How do u send piccys on here?
[11:03] <Boelle_DK> have a old macbook i can start out with
[11:03] <Maxell> Herman-PB0AHX: already one green :P
[11:03] <Boelle_DK> LeoBodnar: yes i do... feel free to think what you want about dreaming
[11:03] <Maxell> Neil_M0CJM: on the chat?
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[11:04] <Maxell> Neil_M0CJM: upload picture to https://imgur.com/ for example
[11:04] <Upu> Neil_M0CJM drag them to imgur.com and paste the resulting link
[11:04] <Neil_M0CJM> Yeah seemed to remember someone telling me how but forgot
[11:06] <Boelle_DK> but put this aside... where do people source their yagi's these days... of course some build themselfes but would rather avoid that
[11:07] <Maxell> Boelle_DK: local ham store?
[11:07] <Maxell> Or ebay :P
[11:07] <Steve_G0TDJ> Burst???
[11:07] <LeoBodnar> blowout
[11:07] <Boelle_DK> hehehehe.... ham store... i know what you mean but a dane would point you to the butcher :-D
[11:07] <Herman-PB0AHX> Maxell: yes 1 green thats all til now lot of red
[11:08] <Boelle_DK> hobbys like ham etc are for the crazy people... people will look at you and ask what planet you came from
[11:08] <Boelle_DK> but yes ebay...
[11:09] <Herman-PB0AHX> crackle burst ??
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[11:09] <chrisg7ogx> can i have freq of Crackle please?
[11:10] <Neil_M0CJM> 434.124
[11:10] <chrisg7ogx> Tks Neil
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[11:10] <LeoBodnar> looks like good recovery spot
[11:10] <Geoff-G8DHE> http://360.g8dhe.net/HAB_Flights/2014_Flights/CRACKLE_20140706/
[11:10] <Neil_M0CJM> lost crackle completely
[11:12] <Steve_G0TDJ> Same here Neil
[11:12] <Neil_M0CJM> like it was switched off
[11:13] <chrisg7ogx> missed it
[11:13] <db_g6gzh> Boelle_DK: du bor på Fyn, ikke? http://www.bmradio.dk/index.php?cPath=38_59
[11:13] <Boelle_DK> db_g6gzh: yes i do....
[11:14] <Maxell> it burst :(
[11:14] <Herman-PB0AHX> yes grgrgrgr to fast
[11:14] <Boelle_DK> db_g6gzh: and you? just so they others do not call secret police because we speak strong encrypted code :-P
[11:14] <chrisg7ogx> swedish?
[11:15] <Boelle_DK> chrisg7ogx: danish
[11:15] <chrisg7ogx> Doh!
[11:15] <Boelle_DK> :-d
[11:15] <db_g6gzh> I am in Cambridgeshire, England
[11:15] <chrisg7ogx> met a beautiful girl there once...in Arhus
[11:16] <Boelle_DK> chrisg7ogx: but you came to your senses and moved back?=
[11:17] <Boelle_DK> db_g6gzh: used google translate then?
[11:17] <chrisg7ogx> no! I was a young sailor and the ship sailed!
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[11:18] <chrisg7ogx> I visited her family later and had a great time but we were young!
[11:18] <db_g6gzh> Boelle_DK: I lived/worked for 2.5 years in Copenhagen
[11:19] <chrisg7ogx> beautiful country and the people and the open sandwiches!!
[11:19] <Boelle_DK> chrisg7ogx: we try to do our best... but some of us are wierd, if not outright nutters
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[11:20] <chrisg7ogx> often think of her.. yes but the people are tolerant to that
[11:20] <Boelle_DK> would a 4-5 element mini beam do me any good given i'm so far away from you?
[11:20] <Maxell> Height is they solution.
[11:20] <chrisg7ogx> Boelle_DK the more eklements the better
[11:20] <Maxell> Yagi does not work if it lays on the ground.
[11:21] <chrisg7ogx> elements
[11:21] <Boelle_DK> Maxell: yes has to point up the sky....
[11:21] <db_g6gzh> most of the time for HAB tracking an omni is enough and much simpler
[11:22] <Boelle_DK> yes but have my eyes on cheap one in the uk
[11:22] <chrisg7ogx> Chores..any more launches today?
[11:22] <Boelle_DK> just have to talk seller in to shipping outside uk....
[11:22] <Boelle_DK> never understood why they sometimes restrict on that... feels a bit like discrimination
[11:22] <Boelle_DK> they will not have to fill any forms etc
[11:23] <Boelle_DK> one thing about the EU i like
[11:24] <chrisg7ogx> and the 20% VAT!
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[11:26] <db_g6gzh> Boelle_DK: this is similar to what I use and seems good price http://www.bmradio.dk/product_info.php?cPath=38_59_60&products_id=355
[11:26] <Maxell> chrisg7ogx: eduhab?
[11:27] <chrisg7ogx> tks axwell
[11:27] <chrisg7ogx> Maxell
[11:28] <Boelle_DK> db_g6gzh: deff a lot cheaper...
[11:28] <mikestir> Boelle_DK: you're probably best of starting with an omni. for hab a yagi is only really going to bring benefit at the edge of your range, and once the balloon is below the horizon it's going to disappear pretty quickly even with a yagi
[11:28] <Boelle_DK> but then again, good enough given my location?
[11:28] <mikestir> s/of/off/
[11:28] <Boelle_DK> mikestir: oki...
[11:29] <Boelle_DK> chrisg7ogx: yep you got 5% lower vat
[11:29] <Boelle_DK> but all the customs BS etc are out of play
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[11:30] <db_g6gzh> main thing is to get it as high as you can and clear of local obstructions
[11:31] <Maxell> every centimeter helps
[11:31] <Boelle_DK> yep... listning is going to be a field trip for me....
[11:31] <Boelle_DK> to many 3 floor building arround
[11:32] <Boelle_DK> have yet to discover where arround me is best suited
[11:32] <mikestir> the roof of one of those buildings
[11:32] <Boelle_DK> damm that i cant have it on a pan/tilt under the roof
[11:32] <Boelle_DK> naaaah... not allowed
[11:32] <Boelle_DK> rented flats all
[11:32] <chrisg7ogx> there's a 70cm yagi from Slovakia on Ebay
[11:32] <Boelle_DK> and the company is damm boring
[11:33] <fsphil> property companies usually are
[11:33] <Boelle_DK> chrisg7ogx: yep have seen it... but was told it looks to flimsy
[11:33] <Boelle_DK> i could apply to get it under the roof tiles
[11:33] <mikestir> needs to be outside really
[11:33] <Maxell> EDUHAB2 and the backup BAHUDE on Sunday 6th Pontrhydfendigaid, Dyfed, Wales 12:00 ish
[11:33] <Boelle_DK> but no good either as they have just smacked up loads of PV
[11:33] <Maxell> are they still launching today?
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[11:36] <chrisg7ogx> it does look cheaply made
[11:36] <Boelle_DK> chrisg7ogx: but have asked the guy if he can make them with more elements... 4 does not look to good
[11:37] <chrisg7ogx> still may be poor quality
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[11:38] <Boelle_DK> i guess its the dipole box that is the big thing here...
[11:38] <Boelle_DK> would have been nice with pic of that from inside
[11:38] <Boelle_DK> the rest i think could be easy upgraded somehow
[11:39] <Boelle_DK> what about the minibeam in the UK?
[11:39] <mikestir> I don't understand why you are going to all this trouble to find a massive yagi and build an az/el mount when an omni will do you fine for starters. yagis are particularly useful for chasing on the ground, but I regularly get flights down to the horizon on an X30 colinear. some directions are better than others due to hills
[11:39] <Boelle_DK> because i relly thought a yagi would be the best out in the field.
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[11:40] <mikestir> it is if you're looking for something on the ground for various reasons, e.g. being able to get a bearing even if it's too weak to decode, and rejection of interferers from other directions
[11:41] <Boelle_DK> yep... i will be on the ground... no option where i live....
[11:41] <Maxell> on a mast you do not need a huge yagi... Sure it will help, but only for the first few decodes
[11:41] <Boelle_DK> only free direction is towards west
[11:41] <Boelle_DK> everything else is buildings
[11:42] <mikestir> if you're on the ground then your horizon is going to be limited and you won't do that well regardless of the antenna
[11:42] <Maxell> Even a yagi will not be able to do much
[11:42] <fsphil> http://ava.upuaut.net/wp-content/uploads/2013/04/IMG_1529.jpg -- stumbled on this image again, still love it
[11:42] <Boelle_DK> ahh.. i take the asshat cap on then.... really thought it would make an difference
[11:42] <mikestir> your best bet would be getting a lightweight omni on a tall pole
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[11:43] <Boelle_DK> yep.... do have a pic in my head....
[11:43] <Boelle_DK> the car have a trailer hook...
[11:43] <Boelle_DK> hmmm
[11:44] <Boelle_DK> some kind of foldable pole....
[11:44] <Boelle_DK> then a cutoff from a bike rack
[11:44] <chrisg7ogx> with drive on frame
[11:44] <Boelle_DK> when at good spot fold out the pole... clamp on trailer hook
[11:44] <Boelle_DK> raise it
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[11:45] <Boelle_DK> then i would just need some hefty bags of something and strings to hold it up
[11:45] <Boelle_DK> or some legs that swing out to the sides and hold it up
[11:46] <chrisg7ogx> you can get a metal box like structure with a connection in it the car wheel drives onto it and becomes the anchor
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[11:47] <Boelle_DK> of course....
[11:47] <Boelle_DK> dooh
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[11:47] <Boelle_DK> big plate
[11:47] <Boelle_DK> pole attached in middle... drive the front wheel over it
[11:47] <Boelle_DK> done
[11:48] <chrisg7ogx> http://antennaengineering.blogspot.co.uk/2012/10/portable-mast-base-be104.html
[11:49] <Boelle_DK> yep... that is what i had in mind....
[11:50] <Boelle_DK> thou i have so many MDF bits here i think i can build it in that
[11:50] <Boelle_DK> but its the idea
[11:50] <Boelle_DK> and does not take up much space
[11:50] <chrisg7ogx> or..alter Denmark's topography
[11:50] <Boelle_DK> could use a big hill :-D
[11:50] <Boelle_DK> not many of those
[11:52] <chrisg7ogx> the plus side is that you have very good take oof
[11:52] <chrisg7ogx> off
[11:54] <Boelle_DK> hmm... will thanks much for the antenna idea....
[11:54] <Boelle_DK> and mast
[11:54] <Boelle_DK> now i just have to figure where the best spot is given i have to get out anyway
[11:54] <Boelle_DK> macbook just needs a 4G dongle
[11:54] <Boelle_DK> and the SDR of course
[11:55] <chrisg7ogx> chores now watching tablet downstairs for any developments
[11:55] <chrisg7ogx> SDR Touch
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[11:59] <craag> recovered
[11:59] <Boelle_DK> any good online height maps that can tell me the highest point arround where i live?
[11:59] <craag> deep in nettles and not easy to see!
[12:00] <craag> plus gps said it was in the tree
[12:02] <craag> i was up in the tree when my co-tracker spotted it
[12:02] <craag> brb, back to base
[12:04] <db_g6gzh> it looked easy on the map but the detail was obscured by the track having scribbled all over the locality
[12:07] <SpeedEvil> http://www.windowsondevices.com/
[12:08] <SpeedEvil> There are allegations that intel is giving away intel gallileo boards.
[12:08] <SpeedEvil> (the crappy ardino x86 clone)
[12:14] <Maxell> Boelle_DK: well there are some databases but most only do 100 meter × 100 meter grids so not that usefull.
[12:14] <Boelle_DK> hmm...
[12:14] <Boelle_DK> you are partly right... but it could have to make do
[12:16] <tweetBot1> @Project_HAB: Blog entry for UKHAS Conference 2014: http://t.co/i9MB3Rhpn7 #HAB #hamr #UKHAS
[12:16] <Maxell> SpeedEvil: rofl http://www.techradar.com/news/software/operating-systems/microsoft-makes-windows-free-on-small-devices-1239665
[12:16] <Maxell> "available [..] for zero dollars"
[12:16] <Maxell> yes not FREE I tell you!!
[12:16] <SpeedEvil> Maxell: yes, the actual hardware it seems
[12:17] <SpeedEvil> not software
[12:18] <Maxell> SpeedEvil: I understand your hate, but they are not clones. http://arduino.cc/en/ArduinoCertified/IntelGalileo
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[12:19] <SpeedEvil> They are a clone in the sense that they're taking all the suck, and making it worse in many ways
[12:19] <mikestir> fsphil: I have some code working that allows simultaneous h264 recording and grabbing a jpeg out for ssdv
[12:19] <mikestir> (on raspi)
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[12:19] <Maxell> Yes. Stupid UNO pinout plus windows nonfree crap.
[12:19] <Maxell> Well there you go Intel.
[12:20] <Maxell> Good job.
[12:20] <robinspat> Hello, did the beer test go well - unable to locate on space near us cluttered map
[12:21] <Boelle_DK> Maxell: ahh a simple google search and spot is found https://www.google.dk/maps/dir/Sandk%C3%A6ret+1,+5260+Odense+S/Fr%C3%B8bjerg+Bavneh%C3%B8j,+Bavneh%C3%B8j,+5560+Aarup/@55.6341572,11.9054961,331945m/data=!3m1!1e3!4m13!4m12!1m5!1m1!1s0x464d21245d4e7a2d:0x95b1bf3c3356eb30!2m2!1d10.438233!2d55.327065!1m5!1m1!1s0x464cdcaa09048f0d:0xc5bb9b5e4bf6c0f1!2m2!1d10.117731!2d55.339151
[12:21] <Boelle_DK> 30 mins in car
[12:21] <Boelle_DK> anyways... have my eyes on this dongle: http://www.ebay.co.uk/itm/Newsky-TV28T-RTL2832U-R820T-RTL-SDR-USB-Stick-BNC-pigtail-/191222887233?pt=LH_DefaultDomain_3&hash=item2c85c5b341
[12:21] <Boelle_DK> good enough? or does it not matter that much?=
[12:22] <Maxell> Boelle_DK: yeah https://www.google.com/maps/search/Fr%C3%B8bjerg+Bavneh%C3%B8j,+Bavneh%C3%B8j,+5560+Aarup/@55.337014,10.116301,3a,86.8y,21.49h,80.21t/data=!3m4!1e1!3m2!1sZ0LxFZaXpMM03HiPF3qvVA!2e0 looks doable
[12:23] <Maxell> Boelle_DK: every R820T tuner chip is the same.
[12:23] <Maxell> It will be fine.
[12:23] <robinspat> Did London Pride rise to upper atmosphere?
[12:24] <mikestir> they could have flown a decent beer
[12:24] <FlerbPc> http://www.engadget.com/2014/06/20/nsa-bugs-reverse-engineered/
[12:24] <FlerbPc> Has a photo of a HackRF
[12:24] <FlerbPc> What?
[12:24] <robinspat> It was a stunt for a tithe pub I believe
[12:24] <Maxell> Boelle_DK: however, it range is the real deal and you want to mess with yagi's you are really better of with a real receiver like the Yaesu FT-817 or a Funcube Dongle pro plus
[12:25] <Maxell> FlerbPc: yes one of the founders made a radar with one of those, to trigger the nsa bugs
[12:25] <Boelle_DK> yes.. but its a compromise.... it has to be portable...
[12:25] <robinspat> was midday yesterday but seems no one here knows anything...
[12:25] <FlerbPc> Maxell, ah, but it doesn't mention it
[12:25] <Boelle_DK> and at reasonble price level
[12:26] <Maxell> FlerbPc: ""Ossmann and co. were able to create their own tiny transistor-sized devices that could surreptitiously transfer wireless data to a nearby radio point (much like the NSA is reported to have done)""
[12:26] <Maxell> Ossmann is the hackrf founder
[12:26] <FlerbPc> Oh right
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[12:26] <Maxell> Boelle_DK: check the Yaesu FT-817. Trust me it's portable :P
[12:26] <robinspat> so back to learning my chops on 'So What' Ronny Jordan version - bye bye all
[12:26] <mikestir> passive bugs. nice. like a modern version of the great seal bug
[12:26] <Boelle_DK> but how big a whole will it leave on my account?
[12:26] <Maxell> And FCDP+ is as large as the R820T stick and will preform better.
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[12:27] <Maxell> Otherwide you would still want to have the HABAmp in front of the R820T stick.
[12:27] <FlerbPc> The HackRF does seem like an awesome project though
[12:28] <Boelle_DK> arround 500£ for Yaesu FT-817 right?
[12:35] <Boelle_DK> SDR dongle ordered
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[12:37] <Chrisg7ogx_> Boelle has been bitten by the bug, no hope for you now😢
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[12:39] <Neil_M0CJM> Crackle just made a noise :-)
[12:40] <Neil_M0CJM> $$dCRACKLE,3182,123857,7129354,-q1v331,174,wlZ2*12t4
[12:40] <Boelle_DK> chrisg7ogx: hehe.... nope and going to format the macbook so its total free of any odd stuff
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[12:41] <jed_edu> relaying message from jed_edu launch will take place at 15.00 EDUHAB2
[12:42] <mfa298> FlerbPc: you missed a balloon flight that you really should have been able to receive!
[12:43] <Steve_G0TDJ> jed_edu: Is that local or BST please?
[12:43] <mfa298> Neil_M0CJM: it just arrived back at base before having the batter desoldered
[12:44] <FlerbPc> Well bummer
[12:44] <Neil_M0CJM> Ahh fair enough :_)
[12:44] <mfa298> craag accidentally let got
[12:44] <mfa298> let go of a pico
[12:45] <mfa298> when I say accidentally he had gone out to buy gas earlier :p
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[12:47] <jed_edu> sorry its bst
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[12:48] <FlerbPc> "4000 MHz to 6000 MHz: -15 dBm to 0 dBm" how can you have negative output power?
[12:48] <Neil_M0CJM> Is EDUHAB2 & BAHUDE both laumching??
[12:51] <fsphil> FlerbPc: just means it's less than 1mw of power
[12:51] <jed_edu> yes BAHUDE is the backup
[12:52] <fsphil> 0dBm is 1mw
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[12:56] <fsphil> is there another launch today?
[12:56] <Steve_G0TDJ> I believe EDUHAB is going up from Wales at 15:00 (not sure if UTC or BST yet)
[12:57] <fsphil> hmm, crackle: Max. Altitude: 189099 m
[12:57] <fsphil> impressive
[12:57] <db_g6gzh> probably while it was over the equator too 8-)
[12:57] <daveake> Mexicle
[12:58] <amell> is crackle launching again? im not sure what happened. cant find in log
[12:58] <fsphil> I'll delete that point
[12:58] <Steve_G0TDJ> fsphil: Details on the EDUHAB launch on the list entitled: Possible RasPi Launch Sunday 6th
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[12:58] <fsphil> aah cool
[12:59] <fsphil> ooh yea a 0,0 point too
[12:59] <Steve_G0TDJ> daveake: Do you happen to know, is there going to be BATC streams at the conf this year?
[12:59] <fsphil> not the same one as the space altitude
[12:59] <daveake> Nothing to do with me ... ask James or Anthony
[12:59] <Steve_G0TDJ> OK Cool
[12:59] <Steve_G0TDJ> Just curious really
[13:00] <fsphil> how did two bad strings get past the checksum test, was it 8-bit checksum?
[13:01] <amell> what happened to crackle?
[13:01] <daveake> More likely to have been bad in the payload shirley?
[13:01] <Steve_G0TDJ> Down and recovered
[13:01] <fsphil> thnking that
[13:01] <amell> intentional? flight was only 30 min
[13:02] <Boelle_DK> anyone here do 3d printing and uses skeinforge for slicing? need some help later on to get settings right.... PM is best so we dont disturb the others with OT chat
[13:02] <Steve_G0TDJ> I don't think it was meant to be quite that short a flight :-)
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[13:05] <LeoBodnar> he went for up/down
[13:06] <tweetBot1> @thecraag: CRACKLE recovered from 6ft nettles. Looks like the software needs some tweaks... #ukhas http://t.co/k293DG9PiD
[13:07] <DL7AD> Steve_G0TDJ: pong
[13:08] <Steve_G0TDJ> Hi DL7AD
[13:08] <DL7AD> morning!
[13:08] <DL7AD> :D
[13:08] <Steve_G0TDJ> I was wondering how come your antenna tower on SNUS was in the UK until Leo pointed out it was because you were on WebSDR - All is well :-)
[13:09] <amell> Steve: DL7AD is a very mobile fellow.
[13:09] <Steve_G0TDJ> Obviously
[13:10] <DL7AD> ^^ i like that websdr.
[13:10] <DL7AD> but in agust it will come to uk not only with that antenna symbol on the snus map ;)
[13:10] <Steve_G0TDJ> Cool are you coming to the Conference then?
[13:11] <DL7AD> sure :) but still looking for a hotel
[13:11] <DL7AD> (pretty expensive)
[13:11] <Steve_G0TDJ> Please make sure you say Hi - Yeah, Hotels are
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[13:12] <DL7AD> he?
[13:12] <Steve_G0TDJ> I put a pic of me on my blog post in case anyone doesn't already know what I look like :-) http://projecthab.co.uk/2014/07/06/ukhas-conference-2014/
[13:12] <Boelle_DK> Q: what is web adr?
[13:12] <Boelle_DK> sdr
[13:13] <DL7AD> Boelle_DK: a sdr (software defined radio) is a broadbandreceiver, which uses the computer for demodulation.
[13:14] <Boelle_DK> yep
[13:14] <Boelle_DK> i know
[13:14] <Boelle_DK> but the web part?
[13:14] <DL7AD> => we mean this http://websdr.suws.org.uk/
[13:14] <DL7AD> www.websdr.org
[13:15] <Boelle_DK> ahhh
[13:15] <LeoBodnar> valve blowout
[13:15] <Boelle_DK> let me check if i understand right.... if i have an SDR here and internet... you guys can actually use it?
[13:16] <mfa298> if you have the right software
[13:16] <LeoBodnar> https://pbs.twimg.com/media/Br3O0YFCcAA5URx.jpg
[13:16] <Boelle_DK> not bad
[13:16] <Steve_G0TDJ> Leo, is that CRACKLE?
[13:16] <mfa298> the suws websdr is just a set of rtlsdr dongles but with some mods and good antennas
[13:16] <LeoBodnar> yep
[13:17] <Steve_G0TDJ> Cheers - One for the album :-)
[13:17] <LeoBodnar> and remains of Qualatex valve
[13:17] <Steve_G0TDJ> I'd love to see the PCB
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[13:18] <mfa298> Steve_G0TDJ: it was just an arduino and ntx2b
[13:18] <Boelle_DK> oki.... but i'm in for sharing... spec given i will be the only one here
[13:19] <Steve_G0TDJ> mfa298: Jerry-rigged together?
[13:19] <Maxell> float attempt?
[13:19] <Boelle_DK> BBL
[13:19] <mfa298> intentional pico burst flight
[13:19] <mfa298> I think the aim was to test the hardware and find the bugs
[13:19] <Maxell> at 4 kms?
[13:20] <mfa298> just a foil pico
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[13:20] <Maxell> hmm ok
[13:20] <Steve_G0TDJ> mfa298: Which Arduino was it, a Pro or Mini?
[13:21] <mfa298> the chasers didn't want to have to go too far
[13:22] <mfa298> Steve_G0TDJ: I tihnk it might have been a Pro but would need craag to confirm
[13:22] <Steve_G0TDJ> OK Cheers
[13:41] <Steve_G0TDJ> Listening to G3KMI/P on WebSDR LOL
[13:42] <Steve_G0TDJ> G3KMI/P de G0TDJ 59-001 in Jo01ck QSL?
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[13:46] <gonzo_m> my first pico only got 12km
[13:46] <Steve_G0TDJ> Mine was 1.5km LOL
[13:47] <gonzo_m> i sense some o e-down-manship hsr
[13:47] <gonzo_m> here
[13:47] <gonzo_m> one
[13:47] <Steve_G0TDJ> LOL
[13:47] <Steve_G0TDJ> I shouldn't have launced really but I'd gone a long way
[13:48] <Herman-PB0AHX> any ballon going up ??
[13:48] <Steve_G0TDJ> EDUHAB and backup scheduled for 15:00 (not sure if UTC or BST)
[13:49] <Herman-PB0AHX> ok steve i waiting for dat
[13:49] <Steve_G0TDJ> Yes, me too
[13:49] <Steve_G0TDJ> Herman-PB0AHX: Are you making it to the Conference this year?
[13:49] <Herman-PB0AHX> Steve_G0TDJ: i am not sure
[13:49] <Steve_G0TDJ> OK
[13:50] <G4MYS_Andy> do we have a freq for the ballon please
[13:50] <Steve_G0TDJ> 434.525 and 434.570
[13:50] <G4MYS_Andy> thank you steve
[13:50] <Steve_G0TDJ> NP - Details on google list for UKHAS
[13:51] <Herman-PB0AHX> Steve_G0TDJ: it is on 16e augustes that is far a way for me to say yes
[13:51] <Steve_G0TDJ> OK No worries - Hope you make it though
[13:51] <fsphil> looking forward to it
[13:51] <Steve_G0TDJ> G4MYS_Andy: https://groups.google.com/forum/#!topic/ukhas/vyn2MZYDN7Q
[13:51] <Herman-PB0AHX> yes i hope also
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[13:52] <G4MYS_Andy> many more thanks Steve !
[13:52] <Steve_G0TDJ> My pleasure
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[14:05] <aadamson> pong daveake
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[14:07] <daveake> Ah yeah ... reading the scroll back you said that the Rockblock doesn't work > 18km
[14:07] <daveake> It has no GPS it doesn't care
[14:08] <aadamson> yes I know that
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[14:08] <aadamson> but those that have used them say that both the stx3 and rockblock don't seem to function at high altitude
[14:08] <daveake> Well ask me then ...
[14:08] <aadamson> ok, asking?
[14:08] <LeoBodnar> "they said" != "is"
[14:08] <daveake> Thanks for asking :)
[14:09] <daveake> I flew one once and it worked fine > 18km
[14:09] <aadamson> how high did it function?
[14:09] <LeoBodnar> those who used Spot said that it works
[14:09] <daveake> As high as the flight went
[14:09] <daveake> 30km ish
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[14:09] <fsphil> 30km closer to the satellites. it would actually work slightly better
[14:09] <Laurenceb__> natrium42 hacked the spot iirc
[14:09] <aadamson> I figured they (sat co's) were doing something like the cell companies do.... If you are into too many cell sites, the lock out the cell phone
[14:10] <fsphil> that doesn't make sense for satellites
[14:10] <aadamson> e.g. if into too many LEO's
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[14:10] <daveake> Well clearly not
[14:10] <LeoBodnar> satellites are not "cells"
[14:11] <Laurenceb__> http://hackaday.com/2011/10/01/hacking-spot-personal-satellite-tracker-to-pass-more-information/
[14:11] <fsphil> the satellites are just relays
[14:11] <daveake> Amazing what you can do with relays :p
[14:12] <LeoBodnar> telephone exchange
[14:12] <daveake> indeed
[14:12] <fsphil> repeaters then :p
[14:12] <aadamson> well thanks for the education, I've been wanting to play with an STX3
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[14:16] <Steve_G0TDJ> EDUHAB2 on the map
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[14:17] <Steve_G0TDJ> 2k up already
[14:19] <Neil_M0CJM> Not hearing anything here yet
[14:20] <Steve_G0TDJ> No sign of the backup payload BAHUDE either
[14:22] <G4MYS_Andy> and daed east to decode¬! 434.524 abiut 450hz shift
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[14:23] <Neil_M0CJM> OOh here she is :-)
[14:25] <Neil_M0CJM> $$EDUHAB2,14:24:46,248,52.295085,-3.764545,08,1,-9.30,5690.6,0*65BA
[14:25] <Neil_M0CJM> :-)
[14:25] <db_g6gzh> BAHUDE is there but not as strong as EDUHAB2
[14:26] <Steve_G0TDJ> Oh yes, I see it now
[14:26] <Steve_G0TDJ> EDUHAB2 very waek on WebSDR
[14:26] <Steve_G0TDJ> Weak even....
[14:29] <Upu> whats the back up one on ?
[14:30] <db_g6gzh> 434.572
[14:31] <db_g6gzh> assuming you menat frequency and not drugs 8-)
[14:32] <Upu> I do :)
[14:32] <Upu> craag hab rotate doesn't like this flight
[14:32] <Upu> crashes out
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[14:35] <db_g6gzh> payload has 'count' rather than 'sentence_id'
[14:36] <Upu> ah
[14:37] <Steve_G0TDJ> Can just see a feint trace for BAHUDE on WebSDR
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[14:41] Nick change: [1]Geoff-G8DHE -> Geoff-G8DHE
[14:41] Possible future nick collision: Geoff-G8DHE
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[14:42] Nick change: Guest80794 -> jdiez
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[14:46] <db_g6gzh> and the nasty hack of %s/sentence_id/count/g doesn't help, probably because of the other payload
[14:47] <db_g6gzh> my python-fu is weak and fails at more than that
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[14:48] <db_g6gzh> but I'm not sure that there's a good solution given that it could be defined as anything
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[14:50] <jed_edu_> looking ok so far
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[14:52] XtremD (~XtremD@unaffiliated/xtremd) got lost in the net-split.
[14:52] SushiKenBrown (~quassel@cmr-208-124-174-194.cr.net.cable.rogers.com) got lost in the net-split.
[14:52] Kodar (~Kodar@ham4.cc.fer.hr) got lost in the net-split.
[14:52] <Steve_G0TDJ> Loosing signal on WebSDR
[14:52] <Laurenceb__> https://www.kickstarter.com/projects/324283889/potato-salad
[14:53] <Steve_G0TDJ> LOL "Risks and challenges: It might not be that good. It's my first potato salad."
[14:53] <G4MYS_Andy> EDUHAB" is the significantly stronger signal, on 434.524 go for that first lads
[14:55] <Steve_G0TDJ> G4MYS_Andy: Unfortunately, my local pub (which just happens to be outside my window) is running an event with a Bouncy Castle and the fans motor is wiping my 70cms out
[14:55] <Steve_G0TDJ> Hence using WebSDR
[14:55] <Steve_G0TDJ> Which has it's own QRM it seems
[14:56] <G4MYS_Andy> Steve I am very sorry this is so easy to decode I must congratulate the builder of it but as stong as the 525 signal is 570 is weak makes me wonder if there is a fault, dontsupose the power is overhead ur way just a thought!!
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[14:57] <jed_edu_> 570 is the backup tracker
[14:58] <Steve_G0TDJ> Not sure Andy but sometimes I get excellent reception where others don't so it's horses for courses really :-)
[14:58] <G4MYS_Andy> I would hear it I am sure if the second aerail was as high , but its also screened by the house and some 7M lower!
[14:58] <jed_edu_> 434.525 is ntx2
[14:59] <Steve_G0TDJ> jed_edu_: Are you going to chase?
[14:59] <jed_edu_> im the chase car in aber
[15:00] <Steve_G0TDJ> Have you a tracker on board? Smartphone?
[15:00] <G4MYS_Andy> got a question.... why do the floater ballons go for around 10,000M why not let them float higher ? Andy
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[15:00] <jed_edu_> yes laptop iphone ect
[15:01] <Steve_G0TDJ> Are you on the map. I have it configured just for the two payloads
[15:01] <jed_edu_> EDU0001
[15:01] <Steve_G0TDJ> Andy, I believe it's therir natural ceiling
[15:01] <Steve_G0TDJ> jed_edu_: Cheers
[15:02] <Steve_G0TDJ> jed_edu_: LOL No, it's eduhab_chase ;-)
[15:03] <fsphil> lovely signal here from eduhab1
[15:03] <Steve_G0TDJ> Cool Phil Loosing it altogether on WebSDR
[15:04] <fsphil> ah it's quite near me
[15:04] <fsphil> amazing the difference a few 100km makes
[15:04] <fsphil> there's a little glitch between lines, like it's sending high speed data
[15:05] <fsphil> G4MYS_Andy: latex floaters go much higher
[15:05] <Herman-PB0AHX> i got green lines from eduhab2
[15:05] <Steve_G0TDJ> Well done Herman-PB0AHX
[15:06] <fsphil> rtty, tis a lovely sound. for the first 5 minutes anyway
[15:07] <amell> is there a flight now?
[15:07] <db_g6gzh> I hadn't noticed the glitch as I've had the volume turned right down (to -1)
[15:07] <fsphil> ah this one is strong enough to quieten the receier on FM
[15:07] <fsphil> amell: yea, over wales
[15:08] <Steve_G0TDJ> It must have a beam pointing in your direction Phil :-)
[15:08] <Herman-PB0AHX> distance to eduhab2 is 543km wow
[15:08] <fsphil> nice
[15:08] <amell> probably marginal for me
[15:09] <amell> wales? what a ridiculous place to launch
[15:11] <db_g6gzh> I've heard that some people have even launched in Northern Ireland
[15:11] <fsphil> unpossible!
[15:11] <Steve_G0TDJ> Signal seems to be improving but has lots of QSB
[15:11] <fsphil> yea some gentle fading
[15:11] <Herman-PB0AHX> ik hrd the backup from eduhab2 also on 570 but no ssdv ?
[15:11] <amell> which is loudest? .525?
[15:12] <Herman-PB0AHX> yas 525 is loud
[15:12] <fsphil> nah no images from this flight
[15:12] <fsphil> didn't know it was a Pi
[15:12] <fsphil> that glitch will be it talking to the gps probably
[15:12] <Herman-PB0AHX> EDUHAB2: RasPi with Pi Cam Frequency 434.525 Shift 470Mhz RTTY 50 8N2
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[15:13] <db_g6gzh> fsphil: ah yes, hadn't thought of that
[15:13] <Herman-PB0AHX> ok
[15:13] <fsphil> it's taking pictures but not transmitting them. 50 baud would be a bit painful
[15:13] <fsphil> 1 minute per packet :)
[15:15] <LeoBodnar> Callsign: HDFLD, Parity: 0 Stop Bits: 2
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[15:15] <LeoBodnar> Is this Odd parity or None?
[15:15] <Steve_G0TDJ> 7n2 Leo
[15:16] <Steve_G0TDJ> Apologies 8n2
[15:16] <amell> i can confirm that i am deaf to this hab
[15:16] <LeoBodnar> It's from [UKHAS] Launch Announcement - Walsall - 10am, Saturday 12th July (reserve date Sunday 13th)
[15:16] <amell> 434.525 - zero seen
[15:16] <Steve_G0TDJ> LeoBodnar: It's the one marked: Possible RasPi Launch Sunday 6th
[15:17] <amell> i thought they didnt get their notam?
[15:17] <G4MYS_Andy> fsphil so why not float at say 40.0000M?
[15:17] <Steve_G0TDJ> That's a different team
[15:17] <amell> i get confused.
[15:17] <Steve_G0TDJ> :-)
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[15:18] <Steve_G0TDJ> amell: You need to spend more time in here - Then you'll be Dazed & confused :D
[15:18] <S_Mark> If I disable the Ublox messages (but the chip itself is still connected and powered but with no output from its serial) - should I be able to introduce my own gps signals via serial on laptop? - or does the gps need to be fully disconnected? Thanks
[15:18] <amell> i spend quite enough time as it is in here.
[15:19] <LeoBodnar> G4MYS_Andy: everybody wants to float at 40km but the balloons
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[15:20] <fsphil> G4MYS_Andy: some of the latex flights have. but it's very difficult getting a balloon up that high
[15:20] <db_g6gzh> S_Mark: I'd expect the ublox will still be driving its output even if not sending data
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[15:21] <S_Mark> right ok, so would need to be fully powered down / removed
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[15:22] <db_g6gzh> powered down would likely still load the line so I'd say removed, or at least that connection disconnected
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[15:23] <S_Mark> hmm ok thanks - all chips smd'd on custom board so prob not possible. OK thanks for your help and at least I know now!
[15:27] <Steve_G0TDJ> Tried home Rx and the signal isn't strong enough for the AFC to track it
[15:28] <G4MYS_Andy> thank you lads for the answers! de andy
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[15:30] <fsphil> down it comes
[15:30] <Steve_G0TDJ> Well, it was interesting using the WebSDR for a bit
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[15:34] <LeoBodnar> http://aprs.fi/#!call=SP9UOB-12 is using WIDE1-1,WIDE2-1
[15:34] <LeoBodnar> i can hear hams fainting and dropping like flies
[15:35] <db_g6gzh> haha
[15:35] <DL7AD> :D
[15:35] <KT5TK> Has anybody got a good recipe how to get a Max7 to sleep through serial or I2C?
[15:35] <db_g6gzh> though WIDE1-1 probably won't help
[15:35] <DL7AD> omg. i cant stand it anymore
[15:36] <DL7AD> db_g6gzh: it should because some digipeaters are set only to repeat wide1-1
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[15:36] <LeoBodnar> I think it's a glitch
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[15:37] <LeoBodnar> Tom has been advokating against using WIDE1-1 unless below 1km
[15:37] <LeoBodnar> *c
[15:37] <db_g6gzh> but they should only be in-fill (I know that might not represent reality)
[15:38] <db_g6gzh> hopefully a HAB shouldn't need in-fill while airborne
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[15:44] <Maxell> damnit :S
[15:44] <Maxell> eduhab2 12 ish
[15:44] <Maxell> gggr
[15:46] <Maxell> Everyone kept quiet about eduhab... Now it's out of range :(
[15:47] <LeoBodnar> shhh
[15:48] <Maxell> :( :(
[15:51] <fsphil> starting to lose it here
[15:51] <Maxell> fsphil: I was never able to lose it!! :( </crymode>
[15:57] <LeoBodnar> it's always with you
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[16:06] <G4MYS_Andy> surprised nomovement from chase cars yet lads!
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[17:22] <Lunar_Lander> hello
[17:22] <DL7AD> hi Lunar_Lander
[17:22] <Lunar_Lander> how's life?
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[17:23] <DL7AD> swetty
[17:27] <Lunar_Lander> ah
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[17:35] <astrobiologist> ping craag
[17:48] <mfa298> astrobiologist: he may take a while to appear. we've just returned from doing radio in a field.
[17:49] <mfa298> Steve_G0TDJ: reading scrollback I'd be worried if you couldn't hear G3KMI/P on the websdr seeing as it was only a couple of fields away
[17:51] <astrobiologist> mfa298 tell more, was it a hab chase?
[17:55] <mfa298> vhf national field day, 24 hour contest on 6/4/2/70/23 (depending on the bands you have radios for)
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[17:59] <astrobiologist> mfa298: wow, sounds like a great day. where is this sort of thing publicised? rsgb? I could have tried listening in on 2m and 70cm at least. as it was, my day and yours had superhets in common as topics but nothing else (it was also national bat day at the NHM in London)
[17:59] <kickball> http://www.adafruit.com/products/1604 can someone confirm that this isn't a gps?
[18:00] <fsphil> confirmed
[18:00] <kickball> nevermind
[18:00] <kickball> big mistake
[18:00] <kickball> lol
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[18:00] <astrobiologist> basic bat detectors on special at argos at the moment, going like hotcakes if anybody is interested...
[18:01] <fsphil> ooh
[18:01] <fsphil> is it the ones that just beep when it hears ultrasound, or the ones that shift the frequencies down? kind like an audio USB receiver
[18:02] <astrobiologist> proper frequency shifter, the bat people said - usually an audio superhet (I genned up on it at LAST year's bat day!)
[18:02] <fsphil> don't see it on their website
[18:03] <mfa298> astrobiologist: this is an annual thing which you can find on the rsgb contests page. It's pretty much all SSB.
[18:03] <mfa298> I should have some pictures later
[18:03] <mfa298> now to sort out some of the boxes of kit
[18:04] <astrobiologist> bat detector at argos, also other ultrasounds like bubble bursting etc: http://www.argos.co.uk/m/static/Product/partNumber/1095973/searchTerm/detector.htm
[18:04] <fsphil> aah, I searched for bat detector
[18:04] <fsphil> thanks
[18:04] <astrobiologist> mfa298: thanks. I could still have listened in on SSB on my TH-F7E. next year then! thanks
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[18:06] <fsphil> reserved :)
[18:06] <astrobiologist> £7.50 at argos but basically the entire bat fraternity of England is buying one for their nan etc at this price. £12.49 on amazon. "proper" detectors are more like £50. kits cheaper of course
[18:07] <fsphil> yea the local bat guy was showing me a few models, they started at about £50
[18:07] <fsphil> I'd like to setup an ultrasonic websdr
[18:08] <astrobiologist> fsphil: another closet bat superhet fiend eh! :-) how about this: bat detector on a low altitude floater?
[18:08] <fsphil> astrobiologist: oooh that could be interesting -- I also thought about a floater to try and photo swifts sleeping in the air
[18:09] <astrobiologist> check for bats across a wide overnight swathe, surely further than any bat enthusiast could check. maybe a data bit transmitted in real time whenever an echolocate frequency is heard, with a dump to an SD card etc of the actual audio
[18:10] <fsphil> there might be quite a lot of background noise
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[18:12] <astrobiologist> fsphil it can't be that bad on those frequencies or the handheld detectors would be swamped too? but it would have to be a very low floater - even the highest flying bats are only 30-40m altitude (I learnt today). can we float at 100m or so, reliably?
[18:14] <astrobiologist> or get a NoV and broadcast audio on MW in real time overnight??... experiment would by necessity be nocturnal and could be limited by battery life :-)
[18:14] <kickball> http://www.adafruit.com/products/1231 would the raspberry pi model a be able to interface with this?
[18:16] <astrobiologist> here is a detector kit but the audio is needlessly beefy so one would need to hack it further I imagine: http://www.nhbs.com/magenta_mkii_bat_detector_kit_tefno_180577.html
[18:17] <fsphil> astrobiologist: you'd be able to transmit audio over an NTX2
[18:19] <mfa298> kickball: in theory you should as the Pi has I2C and SPI (Although some I2C devices have problems so you might need to bitbang that)
[18:19] <mfa298> it's likely you'de need to write a lot of the code for it yourself though
[18:21] <astrobiologist> fsphil: yeah, I'd wondered about that, but surely the bandwidth is too low? presumably you would need at least 3Khz for voice audio, more for something nuanced like an echolocate pip (massive difference between different species and some use frequency multiplexing as well)
[18:26] <fsphil> for a low float and a decent antenna you'd get audio over it fine
[18:26] <fsphil> something that could detect individual calls would be nice
[18:28] <astrobiologist> well they wouldn't be detected constantly presumably, so you could have a store-and-dump arrangement perhaps. at low altitude it might suit the high speed 868Mhz radiomodems like the Digi Xbee-Pro
[18:29] <fsphil> setup a couple of stations on the ground with gps synced clocks, you could probably track the bats
[18:31] <astrobiologist> or listen in stereo with multiple nearby balloons and triangulate :-)
[18:32] <LeoBodnar> "Analogue audio applications other than voice / speech are excluded." [19:17] <fsphil> astrobiologist: you'd be able to transmit audio over an NTX2
[18:33] <LeoBodnar> sorry, "voice / screech"
[18:33] <astrobiologist> LeoBodnar: but if we digitise it then it isn't analogue
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[18:34] <fsphil> it's the bats voice
[18:34] <LeoBodnar> indeed
[18:36] <astrobiologist> actually, there are a range of license-exempt bands around 174mhz reserved for biological experiments, bird tracking etc. could probably justify using that
[18:37] <fsphil> easier to stick with the stuff we have hardware for
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[18:38] <astrobiologist> split it between local downlink on an Xbee then and some data fields on habitat for wider fun
[18:39] <kickball> How can I find out much this weighs? http://www.adafruit.com/products/385
[18:40] <astrobiologist> jcoxon: do you know any medics, biomedical scientists or PHE-types who would be unafraid to admit a collaboration with NASA?
[18:40] <mfa298> kickball: maybe send adafruit an email
[18:40] <jcoxon> astrobiologist, perhaps, PM with more info
[18:41] <mfa298> or see if you can find a datasheet online. (Or buy one and measure)
[18:41] <daveake> kickball Alternative answer: not enough to worry about
[18:42] <astrobiologist> jcoxon: I have a Gmail email address for you, if that is still extant then I'll drop you a note
[18:43] <jcoxon> yup
[18:43] <astrobiologist> regarding bat echolocation audio download, we (I) are/am overcomplicating things, there is no need to fly the audio superhet. we can just capture the ultrasound data and download that, and run it through the bat version of fldigi
[18:44] <fsphil> yep, you want to record a wide range of frequencies
[18:44] <astrobiologist> saw it done at the NHM - a bat guy played back a field recording - nothing to hear with human ear but if he held detector up to the speakers then human-audible pips could be heard
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[18:45] <fsphil> the recording device would need to sample at about 192khz
[18:46] <fsphil> even compressed it would generate quite a bit of data
[18:48] <chrisstubbs> Heh the navspark has a "balloon" GNSS nav mode
[18:48] <chrisstubbs> dont mind if I do
[18:49] <Reb-SM0ULC> will be interesting night with sp3osj. closing in on polar cicle..
[18:50] <astrobiologist> jcoxon: email sent
[18:50] <astrobiologist> fsphil how many kbytes per second?
[18:51] <LeoBodnar> whatever good mp3 compression is
[18:51] <LeoBodnar> 128kbps
[18:51] <LeoBodnar> or more
[18:51] <mattbrejza> is this to transmit or save?
[18:51] <fsphil> save
[18:51] <mattbrejza> meh, sd cards
[18:51] <LeoBodnar> oh, save is easy
[18:52] <astrobiologist> mattbrejza if you know how to transmit, at short range, please say :-)
[18:52] <mattbrejza> also you can downconvert to reduce the sample rate
[18:52] <mattbrejza> ntx2?
[18:52] <fsphil> 375kB/s raw
[18:52] <mattbrejza> analogue i ment
[18:53] <fsphil> flac might reduce that a bit
[18:53] <mattbrejza> what frequency ranges do bats 'transmit?
[18:53] <fsphil> 50-100khz
[18:53] <mattbrejza> is it a pretty fixed kHz or so?
[18:53] <fsphil> not fixed sadly
[18:53] <fsphil> varies by species
[18:54] <fsphil> the higher frequency ones are rarer though
[18:54] <mattbrejza> hmm so you cant really downconvert and resample
[18:54] <fsphil> a little, you could drop the bottom 40khz pretty safely
[18:54] <fsphil> or not
[18:54] <fsphil> http://www.staffordshirebats.btck.co.uk/Information/Frequencies
[18:54] <mattbrejza> but going 192kS -> 150kS isnt really much
[18:54] <astrobiologist> some bats are frequency multiplexed
[18:55] <mattbrejza> so if you only wanted to detect one you could resample
[18:55] <fsphil> yes
[18:55] <fsphil> or split it up into bands, and only have it record on activity
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[18:56] <mattbrejza> even at 375kB/s thats still an hour+ with a 2GB SD car
[18:56] <mattbrejza> d
[18:56] <fsphil> true
[18:56] <fsphil> and that's tiny these days
[18:57] <mattbrejza> well >2GB is when embedded SD stuff might be more interesting
[18:57] <astrobiologist> you'd need an audio ADC that could do ultrasound. I imagine a lot of them have sneaky bandpass filters built in?
[18:57] <mattbrejza> does fatfs support >=4GB?
[18:57] <jed_edu> edu2 has been recovered
[18:58] <fsphil> congrats jed_edu :)
[18:58] <fsphil> any difficulty?
[18:58] <fsphil> mattbrejza: no. but easy to split the file
[18:59] <mattbrejza> i thought accessing the sd card was different to begin with
[18:59] <jed_edu> thanks everbody for tracking and no difficulty with recovery
[18:59] <fsphil> astrobiologist: adc on something like the stm32 is fast enough
[19:00] <fsphil> I'd probably just dump the samples to SD directly, forget the filesystem
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[19:00] <mattbrejza> well not sure how much overhead it adds
[19:01] <amell> Will sp3osj reach japan over the pole? Anyone run a hysplit?
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[19:01] <mikestir> just reading back about the bat thing - if you're only interested in ultrasound you could maybe use a bandpass filter and then sub-sample
[19:01] <astrobiologist> sounds like u guys could hack something pretty quickly then... just nick the audio stage off a detector kit (don't even need the superhet) and plug it into the adc on an stm32 or similar?...
[19:02] <mikestir> that will only work with an ADC that doesn't include a digital filter though, so something like the built in SAR ones on a microcontroller, but not a proper audio codec chip
[19:02] <mattbrejza> aliasing sampling is neat
[19:03] <mikestir> well it's basically getting the heterodyne function for free
[19:03] <astrobiologist> then leave the superhet in to bring it down to audible frequencies.
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[19:04] Action: amell reads back and wonders if dl-fldigi has a bat modem
[19:05] <fsphil> we shall call it batfink
[19:05] <astrobiologist> amell there is something like it... for bats. even had a waterfall
[19:06] <amell> is there any language in batspeak, or is it just echolocation only?
[19:06] <fsphil> echolocation
[19:06] <fsphil> well I'm sure they use it for mating calls too
[19:06] <astrobiologist> apparently they chitter at each other in colonies
[19:07] Action: mikestir likes the batcave at chester zoo
[19:07] <daveake> Every time someone types "echolocation" I think they've miss-typed "chocolate"
[19:07] <fsphil> I'd like to think they do the same thing NASA use to image asteroids
[19:07] <mikestir> chocolocation
[19:07] <astrobiologist> is floating that low feasible?
[19:07] <amell> same principle could be used on model boats, to echolocate whale song.
[19:07] <amell> oh, and secret USN experiments too.
[19:09] <fsphil> astrobiologist: would need something to activly control it
[19:09] <fsphil> more like a blimp
[19:13] <astrobiologist> bother. how are we doing on 100m active altitude nocturnal blimp control?
[19:13] <amell> not too well. surprisingly this subject has already been discussed in here previously.
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[19:14] <fsphil> you'd need to know the terrain
[19:14] <astrobiologist> amell: blimps, swifts or bats?
[19:14] <amell> Terrain following radar. No problem.
[19:14] <fsphil> all three I think
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[19:15] <amell> Everything has been discussed here previously.
[19:15] <astrobiologist> amell: bees?
[19:15] <amell> Im not sure about that one.
[19:17] <astrobiologist> how about airborne captive tealthy insect sensor project:
[19:17] <astrobiologist> http://science.howstuffworks.com/bomb-sniffing-bees.htm
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[19:17] <fsphil> insect sensor? jcoxon launched a spider once
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[19:18] <astrobiologist> my wife has just started a beehive. she only has 38 bees so far. she asked me to check on them. so I lovingly took out her 38 bees and handled them. next thing I know they were flying wildly around my head
[19:23] <SP3OSJ> #habhub
[19:25] <LeoBodnar> #lol
[19:27] <astrobiologist> my work here is done. always leave them wanting more
[19:27] <astrobiologist> off for supper, catch u later maybe
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[19:30] <daveake> #repetition
[19:31] <daveake> SP3OSJ You have to /join #habhub and then ask for your flight doc to be approved there
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[19:33] <SP3OSJ> flight is approved
[19:34] <Reb-SM0ULC> SP3OSJ: hello! was great to have your balloon pass by last 24hours!
[19:36] <Marcel__> Am I correct that the approval thing is UK only?
[19:37] <SpeedEvil> No, approval is unrelated to CAA approval
[19:37] <SpeedEvil> It's to get your flight to show up on the tracker, wherever it is
[19:37] <Marcel__> oh ok, clear
[19:37] <SP3OSJ> Reb-SM0ULC: OK Thank you for your kind words.
[19:38] <Marcel__> I'm planning my first balloon end of this month, maybe beginning of August. in NL
[19:38] <SpeedEvil> ^wherever it is - of course being in range of a turned on receiver
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[19:41] <LeoBodnar> SP3OSJ I have enabled your APRS import temporarily but ask Upu to keep it running permanently
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[19:50] <SP3OSJ> UPU does not agree. I UPU already reported: (
[19:52] <SP3OSJ> I do not know why. Do not ask me
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[19:54] <amell> SP3OSJ: is your objective to beat LeoBodnar in latitude?
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[19:56] <SP3OSJ> amell: I HAVE NO INTENTION OF SUCH - NEVER!
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[19:57] <SP3OSJ> I want can only fly. Nothing more.
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[20:00] <LeoBodnar> lol SP3OSJ
[20:01] <LeoBodnar> Upu is just busy today
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[20:05] <SP3OSJ> LeoBodnar: I wrote to the UPU 3x so I have enclosed my APRS. The effect was such that it does not attach. I do not want any trouble. This is not a discussion forum.
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[20:14] <pretec> Hi
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[20:16] <astrobiologist> whoami
[20:16] <LeoBodnar> it's ok they can fix that
[20:18] <astrobiologist> bat update (after downloading iTune documentary): some bats fly to 10,000ft, which would make bat hab much easier, but unfortunately NOT in the U.K. some bats catch up to 1000 insects per hour, so say one per 3-4 secs - so actually more or less constant echolocating?
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[20:20] <amell> bats in india are humungously large - presumably louder
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[20:21] <amell> they are like twice the size of a fat rat
[20:22] <astrobiologist> are those fruit bats/flying foxes?
[20:22] <amell> let me take a look one mo
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[20:24] <astrobiologist> nipper requested itune bat docu. I'm not quite that bat hab obsessed. yet
[20:24] <amell> Yeah, Pteropus vampyrus.
[20:24] <amell> seen them flying close past me in india, flipping scary if you havnt seen them before.
[20:24] <astrobiologist> amell I think those larger bats are not echolocators. they have very good eyesight instead
[20:25] <amell> yep. looks like they dont echolocate.
[20:26] <astrobiologist> ARGHHHH WHY IS BAT HAB SO DIFFICULT
[20:27] <amell> highest known bat call is apparently 212kHz. thats a ridiculously high sample rate!
[20:27] <amell> http://en.wikipedia.org/wiki/Animal_echolocation#Bats is interesting reading
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[20:28] <mikestir> you don't need to sample that fast amell
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[20:29] <astrobiologist> ohhh this is so good it's twisted: tie an insect to a thin thread, from ur hab, and use it as live bait? then the bat comes to u?
[20:29] Action: amell is reading about bat auditory cortex
[20:30] <mikestir> could you play bat mating calls from a hab?
[20:30] <astrobiologist> habbatshag?
[20:30] <mikestir> hey fellow bats check out my humongous orbs
[20:31] <amell> http://en.wikipedia.org/wiki/Human_echolocation is absolutely fascinating, and impressive
[20:33] <astrobiologist> come and check my unusual picaxe audio demultiplexing loudspeaker system, girls
[20:34] <LeoBodnar> 100 CALL ATTRACTBATS
[20:34] <LeoBodnar> or is it GOSUB duh
[20:34] <astrobiologist> the wiki sounds a bit hagiographic though
[20:35] <astrobiologist> do; pin1=attractbats; wait; pin1=0; loop?
[20:38] <mattbrejza> have you decided at what distance they can be heard?
[20:39] <astrobiologist> no idea mattbrejza. I wonder if free path return loss etc applies to sound waves too, in which case above listening down might hear much more than stuck in ground clutter
[20:44] <astrobiologist> better ask http://www.bats.org.uk
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[21:07] <astrobiologist> or http://www.batplanet.co.uk
[21:08] <astrobiologist> http://www.batsound.com
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[21:10] <Reb-SM0ULC> sp9 forgot something and returning home??
[21:10] <astrobiologist> catch you later,Nipper storytime
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[21:12] <Upu> what da rude word
[21:12] <Upu> I am reported
[21:12] <Upu> damn
[21:12] <Upu> to whom ?
[21:12] <Upu> does he not grasp flights are seperate entities
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[21:13] <S_Mark> ?
[21:13] <Upu> scroll back S_Mark
[21:13] <Upu> I am reported
[21:14] <daveake> go to #jail
[21:14] <Upu> heh
[21:14] <Upu> channel actually exists
[21:14] <arko> do not pass go
[21:15] <fsphil> if you join it, can you leave again? The opposite of +b
[21:15] <arko> lol, is it full of a bunch of people in jail on irc?
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[21:16] <Reb-SM0ULC> if you escape you get banned
[21:16] <Upu> I mailed him
[21:16] <Upu> trying to explain a flight is a singular thing
[21:17] <LeoBodnar> #lalalala
[21:17] <LeoBodnar> #canthearya
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[21:26] <db_g6gzh> if anyone with access would like to, please clear my scribbling from the map with DBTEST before someone asks for the frequency 8-)
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[21:30] <Boelle_DK> Upu... dont be alarmed... there are a lot of "asshats" on irc... not just here
[21:30] <Laurenceb__> s/ass/assburger
[21:30] <arko> this is probably the least hostile channel on freenode
[21:30] <Boelle_DK> i can vote for that
[21:31] <Boelle_DK> out the ones i know
[21:31] <Boelle_DK> and can remember
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[21:36] <Boelle_DK> try #reprap i just have not had any good experience there.... have a few Q's for my 3D printer and the norm is to divert people to other software... and simple q's are treated same
[21:37] <tweetBot1> @daveake: @pitsproject prototype board being installed in a foam egg for tomorrow's test flight. http://t.co/hym9zyt9YK #raspberrypi #UKHAS
[21:47] <chrisstubbs> Upu are those boards being assembled by hand or pick and place?
[21:47] <Upu> combination I think
[21:47] <Upu> SMD stuff is pick and place
[21:48] <Upu> I've asked them fro some pictures of the assembly
[21:48] <chrisstubbs> Would be interested to see :)
[21:48] <Boelle_DK> Upu, does not have to be.... the ublox can be done by hand...
[21:48] <Upu> yes :)
[21:48] <Boelle_DK> and so can most other stuff with a bit of care and good twezzers
[21:49] <Upu> Yes Boelle_DK but when you have to do 200 of them ... :)
[21:49] <Lunar_Lander> xD
[21:49] <Boelle_DK> hmmm
[21:49] <Upu> and then some
[21:49] <Boelle_DK> depends on time limit
[21:49] <Boelle_DK> :-P
[21:49] <Upu> no depends on whether I want to have a lift
[21:49] <Boelle_DK> :-P
[21:50] <daveake> Upu Pic from the lab http://us.123rf.com/400wm/400/400/dontcut/dontcut1102/dontcut110200108/8918846-crazy-funny-genious-with-soldering-iron.jpg
[21:50] <daveake> silly url :p
[21:50] <Upu> and the cost per board to get it assembled is at the level of where I'll let someone else do it
[21:50] <Upu> I've soldered over 1000 ublox by hand, time for someone else to have a go
[21:50] <Upu> hehe daveake
[21:51] <SpeedEvil> https://www.youtube.com/watch?v=pdGSFc7VjBE I think I've liunked before
[21:51] <mikestir> Boelle_DK: you have to balance the cost of paying an assembly house vs the cost of a divorce
[21:51] <SpeedEvil> Some random hints for quick hand SMD assembly
[21:51] Last message repeated 2 time(s).
[21:51] <SpeedEvil> doh
[21:52] <Boelle_DK> mikestir: :-D hehe... maybe the divorce is a added bonus
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[21:58] <astrobiologist> http://en.m.wikipedia.org/wiki/Bat_detector
[21:58] <astrobiologist> argh, ultrasound absorbed strongly by air, especially humid air
[21:59] <astrobiologist> so 10-30m detector range max
[21:59] <astrobiologist> so ground hugging blimp it is...
[22:00] <astrobiologist> could use one of those ultrasound detectors with a 10m-ish range and dump ballast whenever it gets too low?
[22:00] <mattbrejza> how did you intend to track this?
[22:00] <astrobiologist> might get some interesting autoballast induced oscillations but that would be half the fun
[22:00] <mattbrejza> also btw leo managed to accidently float at ~1km the other week
[22:01] <astrobiologist> mattbrejza to track, the usual way presumably... would need nearby chase team, but short range would allow higher data rates and maybe 868mhz Xbee etc
[22:02] <astrobiologist> can Leo make it float at 30m please?
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[22:02] <fsphil> hire a hot air balloon
[22:03] <mikestir> if it's going to be that low you could just send the audio samples back in real time via 3g
[22:03] <fsphil> a blimp might scare away the bats
[22:03] <astrobiologist> fsphil very sensible idea, there goes the evening
[22:03] <astrobiologist> so might a giant hot hair balloon with cow burners! why are they called cow burners? because they scare cows
[22:03] <fsphil> bonus is that you get to fly along with it :)
[22:04] <astrobiologist> hot air balloon flights at night?? surely that is VFR only?
[22:04] <fsphil> yea suspect so
[22:05] <astrobiologist> so time for a bit of autoballast control algorithm writing
[22:06] <LeoBodnar> competition hot-air balloons are flying during the night, not sure what ATC service they are getting
[22:06] <LeoBodnar> well night flights are possible under VFR
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[22:06] <LZ1DEV> if(altitude > 1000m) killPersonBellow();
[22:06] <LeoBodnar> you don't need instrument rating for night rating
[22:07] <on4bhm> has anyone got a good adres for buying foil party balloons on internet?
[22:07] <astrobiologist> LeoBodnar I know that over the last fifteen years there has been a significant shift to flying with transponders
[22:07] <astrobiologist> always fear this will come to us in the end too!
[22:07] <Boelle_DK> who makes those boards for pi in the sky... looked damm nice
[22:07] <LeoBodnar> erm this is irrelevant unless ou are in controlled airspace?
[22:08] <astrobiologist> foil balloons: http://partystoregirl.co.uk/product/bat-shaped-balloon/
[22:08] <fsphil> Boelle_DK: >> Upu
[22:08] <LeoBodnar> lol
[22:08] <Boelle_DK> oki
[22:08] <Upu> me :)
[22:08] <LeoBodnar> actually balloon has strange sound ambience
[22:08] <Boelle_DK> did not know
[22:09] <fsphil> aah, stealth. they won't see it coming astrobiologist
[22:09] <LeoBodnar> it's sort of dulls everything behind it
[22:09] <LeoBodnar> like a studio absorbent panel
[22:09] <astrobiologist> Leobodnar when does it become controlled airspace?
[22:09] <fsphil> people had mentioned hearing echos from balloons
[22:09] <fsphil> I've not heard it myself
[22:10] <Boelle_DK> transponders.... i might seek for a permanent permit.... and i wonder how i could let planes know where the baloon is... radar is one thing.... but are there other ways?
[22:10] <chrisstubbs> on4bhm, most people use http://randomsolutions.co.uk/Random_Aerospace/Balloons.html for foil and latex balloons
[22:10] <LeoBodnar> well it's designated a controlled airspace by CAA or local aviation autority
[22:11] <LeoBodnar> and you are not supposed to enter it without prior permission from ATC
[22:11] <on4bhm> bought with randomsolutions before
[22:11] <on4bhm> but do they have foil?
[22:11] <astrobiologist> Boelle_DK consider ADS-B
[22:12] <Boelle_DK> yep... TCAS is prop a bit to much
[22:12] <chrisstubbs> on4bhm, ues "36" Silver Qualatex" is the commonly used one
[22:12] <chrisstubbs> *yes
[22:12] <on4bhm> ok clear
[22:12] <on4bhm> i guess there aren't any bigger ones?
[22:12] <on4bhm> how much lift do they have?
[22:12] <LeoBodnar> my memory is rusty but you can get permission to cross controlled A/S even without transponder if they are not very busy
[22:12] <chrisstubbs> There may well be, but not stocked by steve afaik
[22:13] <LeoBodnar> </i think>
[22:13] <chrisstubbs> on4bhm, do you want to float your payload or just have it reach a few km and burst?
[22:13] <LeoBodnar> there is stuff that does not have transponders
[22:14] <db_g6gzh> there is stuff that does not have radios
[22:14] <LeoBodnar> vintage stuff like Tiger Moths and the like
[22:14] <on4bhm> no i want to try to float
[22:14] <db_g6gzh> or at least when I used to fly gliders we didn't have (nor did the tug aircraft)
[22:14] <on4bhm> and have beacon on bord
[22:15] <LeoBodnar> you don't need license to fly gliders lol
[22:15] <db_g6gzh> true
[22:15] <LeoBodnar> still
[22:15] <chrisstubbs> on4bhm, check out http://ukhas.org.uk/_media/projects:microballoons:foil-floaters-leo.png to float I found you need to aim for ~1g of free lift
[22:15] <LeoBodnar> i think they are changing that in the nearest future
[22:15] <astrobiologist> balloon guys said they increasingly flew with transponders because of mid-air collisions and n
[22:15] <db_g6gzh> but you can't easily just go fly one as you need launching
[22:15] <LeoBodnar> it's good airmanship to increase your own visibility
[22:16] <astrobiologist> and near-missed with other light aircraft. I'm signing off for a bit now, need to help missus
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[22:16] <on4bhm> what was the def. agn for free lift? i'm a novive at this
[22:17] <chrisstubbs> free lift if the total lift of the balloon - the weight of your payload
[22:17] <Boelle_DK> its easy to find info on how to build an arduino ads-b reciever... but not found a guide on how to build and transmitter
[22:18] <LeoBodnar> it's probably very good news
[22:18] <chrisstubbs> top leo tip: measure out 1g (or whatever free lift you want) of solder and hang that from the payloads antenna, carefully fill until the balloon is neutrally buoyant
[22:18] <on4bhm> less than 1 gr.? what gps sollution should i go for then? i have a rfm22b in stock... that's ok i guess
[22:18] <chrisstubbs> remove the solder and launch!
[22:20] <chrisstubbs> Take a look at the ublox max-7
[22:20] <chrisstubbs> I'm off now, but I leave you in capable hands. Night all!
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[22:21] <Boelle_DK> well me off too....
[22:21] <Boelle_DK> looking like a hanged cat
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[22:33] <Ian_> Thanks astrobiologist. got a bat detector on order for pickup tomorrow. On hols near Madrid, bats fly between the buildings at twighlight - hunting - for between ten and fifteen minutes. Obvious target for listening to. I had been thinking about that for quite a while but wasn't able to identify a sensor. You have provided the starting point. First get some data then work out the next move :)
[22:35] <Ian_> My bees know to attack the cuffs, where the sweat from Marigolds soak into the beesuit. I have the wounds to prove it. It's also why bees like/dislike horses - sweat.
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[00:00] --- Mon Jul 7 2014