highaltitude.log.20140808

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[00:19] <jarod> http://x264.nl/dump/thestory.png
[00:19] <jarod> :)
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[00:59] <aadamson> maybe a smaller, lighter, more flexible rpi for habing - http://hardkernel.com/main/products/prdt_info.php?g_code=G140610189490&tab_idx=2
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[02:11] <LZ1DEV> http://i.imgur.com/7cyOLVy.gif
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[07:59] <daveake> Anyone want to be £12,000 richer? :p http://www.dailymail.co.uk/femail/article-2718765/Diamond-sky-Sparkler-worth-12-000-shot-SPACE-finds-lands-keeps-it.html
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[08:09] <mfa298> Quote: 'What better way to raise awareness of our virtual universe than by actually making it a reality and putting a diamond in the sky for the first time ever.
[08:09] <mfa298> Read more: http://www.dailymail.co.uk/femail/article-2718765/Diamond-sky-Sparkler-worth-12-000-shot-SPACE-finds-lands-keeps-it.html#ixzz39mnUsVz0
[08:09] <mfa298> or even: 'What better way to raise awareness of our virtual universe than by actually making it a reality and putting a diamond in the sky for the first time ever.
[08:09] <mfa298> Read more: http://www.dailymail.co.uk/femail/article-2718765/Diamond-sky-Sparkler-worth-12-000-shot-SPACE-finds-lands-keeps-it.html#ixzz39mnUsVz0
[08:09] <mfa298> gaah, silly copy and paste.
[08:10] <mfa298> Didn't Steve already put a diamond in the sky ?
[08:10] <daveake> diamond engagement ring
[08:11] <LeoBodnar> "The UK Civil Aviation Authority (CAA) and online retailer 77 Diamonds worked together to launch the jewel into space"
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[08:12] <mfa298> so as always the DM makes things up and "... and
[08:12] <mfa298> putting a diamond in the sky for the first time ever" is a lie
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[08:14] <mfa298> In other news my copy and paste skills appear to be failing me today
[08:14] <fsphil> it's the daily mail effect
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[08:20] Action: andyfletcher remembers that Lucy was supposed to be in the sky with diamonds back in the 1960s
[08:20] Action: andyfletcher hides
[08:27] <fsphil> https://www.youtube.com/watch?v=AB3uVARNhmM
[08:28] <fsphil> it's so awful
[08:30] <daveake> oh my
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[09:01] <thasti> is there a way to offline telemetry string parsing tests?
[09:02] <thasti> and: should altitude be in feet or meter?
[09:04] <SpeedEvil> Inches are the more impressive unit
[09:05] <thasti> was that irony?
[09:05] <adamgreig> SpeedEvil: surely thous
[09:05] <adamgreig> angstroms?
[09:06] <adamgreig> thasti: meters please, though if you want to use feet it's possible to have the system convert it on reception
[09:06] <thasti> (alright, then meters, it is?)
[09:06] <daveake> or Mexican Light Years
[09:06] <adamgreig> thasti: if you have a payload document, just submit telemetry online, it will appear on the map but we can clear it, check http://habitat.habhub.org/logtail for errors
[09:06] <thasti> thanks, i was confused by the APRS bs that says altitude has to be in feet
[09:07] <SpeedEvil> Also, meters fit nicely in an unsigned 16 bit
[09:08] <thasti> adamgreig: i'm on vacation and don't have access to the internet (and it's really slow here..), therefore i'm looking for a way to test it online
[09:08] <thasti> offline*
[09:08] <adamgreig> do you know about payload configuration documents?
[09:08] <thasti> yes, i just created one
[09:09] <adamgreig> great
[09:09] <adamgreig> so unfortunately there's no way to test one offline at the moment
[09:09] <adamgreig> without just uploading a sentence and seeing what it does
[09:09] <thasti> alright, then i will try to do it with my super fast internet connection :p
[09:09] <UpuWork> ping ibanezmatt13
[09:09] <thasti> high speed volume is over for this month anyway :p
[09:10] <thasti> ok, then i will just change my altitude back to meters and will give it a go
[09:15] <thasti> how can i manually add my payload doc id to dl-fldigi?
[09:15] <ibanezmatt13> Hi UpuWork
[09:15] <Geoff-G8DHE-M> http://www.connexionfrance.com/france-reims-environmental-group-green-robin-des-bois-balloons-sue-littering-16065-view-article.html
[09:15] <UpuWork> hey ibanezmatt13 pm
[09:15] <Geoff-G8DHE-M> Watch it LeoBodnar, they wil be after you nect ;-)
[09:16] <Geoff-G8DHE-M> *next
[09:17] <nats`> they are fucking stupid
[09:17] <nats`> it's easier to sue people partying for a wedding than AREVA putting toxic waste everywhere
[09:24] <myier> what would you say is a typical power consumption for an arduino uno with a ublox 5V breakout, two 1-wire temperature sensors, a SD card shield, an NTX2 and a BMP180 pressure sensor with its level converter, and a step-up voltage converter from 2 AA batteries to 5V? I'm having a 800mA draw from the batteries at around 2V (quite dead batteries)
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[09:28] <SpeedEvil> Step-up converters can be remarkably inefficient
[09:28] <SpeedEvil> Measure teh voltage it takes at 5V
[09:29] <SpeedEvil> current
[09:29] <SpeedEvil> 100mA@5V doesn't sound unlikely
[09:29] <myier> it's said to be more than 80% efficient
[09:29] <SpeedEvil> And 50% efficiency takes you to 800mA
[09:29] <myier> ncp1402
[09:29] <SpeedEvil> myier: read the actual spec-sheet and work out efficiency at 2V in
[09:30] <SpeedEvil> Often efficiencies are quoted at rahter high input voltages.
[09:30] <myier> that's right
[09:30] <daveake> Efficiency will be quoted at the high end of the allowed input voltage range
[09:30] <daveake> And as SpeedEvil says, at low voltages they can be really inefficient
[09:30] <thasti> what happens if the sentence_id in the tlm string is not always increasing but stays the same for some tlm frames? also: can it roll over?
[09:31] <daveake> 1402 isn't one of the better ones
[09:31] <zyp> you're probably wasting a bunch by feeding it into LDOs to get it back down to 3.3V
[09:31] <SpeedEvil> If, for example, it's got a normal diode or even a shottky diode in as a catch diode, not active rectification - that will be a large fraction of the inefficiency
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[09:34] <myier> according to the datasheet it shouldn't drop below 60%
[09:34] <myier> even at low voltage, but maybe current draw is too high, I'll have to test again with new batteries
[09:35] <daveake> The old batteries - were they 2V in use or when disconnected from the boost converter?
[09:36] <myier> in use
[09:36] <daveake> ok
[09:36] <SpeedEvil> myier: yeah - well - 60% * 100mA@5V = 700mA or so
[09:36] <SpeedEvil> Which is ballpark
[09:36] <daveake> yup
[09:36] Nick change: x-f_ -> x-f
[09:37] <myier> quite right
[09:38] <myier> maybe I should try another converter then
[09:38] <myier> I actually have another one,
[09:38] <myier> with an U1V10F5
[09:39] <myier> rated for 6 times more curreny
[09:39] <zyp> sounds like it'll be even less efficient then
[09:39] <myier> but also inefficient at low input voltage and less accurate
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[09:40] <myier> maybe the solution is to have 3 AA batteries then
[09:41] <thasti> is there a more lightweight alternative to the spacenear.us tracker and the habitat mobile tracker? both are too heavy for a GPRS mobile connection..
[09:42] <myier> there is one, habmap.philcrump.co.uk
[09:42] <myier> maybe not lightweight enough
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[09:43] <thasti> well, i'm happy with the logcat telling me it's able to parse my sentences correctly
[09:43] <thasti> for now
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[09:44] <thasti> should it have appeared on the map?
[09:45] <myier> no, only approved flights appear
[09:45] <thasti> alright, okay - no need to delete then :)
[09:46] <myier> you should work in offline mode anyway
[09:48] <thasti> DL client -> offline ?
[09:48] <thasti> or rather uncheck "online"?
[09:48] <daveake> <myier> no, only approved flights appear
[09:48] <daveake> Not true
[09:49] <daveake> You only need a payload doc, for which there is no approval, to appear on the map
[09:49] <thasti> well - did i appear on the map? callsign DK3SB - i can't properly load the tracker here...
[09:50] <myier> uncheck online
[09:51] <thasti> done
[09:51] <myier> oh I misunderstood, sorry
[09:53] <daveake> It's uploading but not on the map. Might be something to do with the payload doc - you have a filter "common.invalid_always"
[09:54] <fsphil> that gets everyone
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[09:55] <thasti> does anyone use GPS time as sentence_id? is that a good idea? how often is it allowed to overflow and restart from 0?
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[09:56] <SpeedEvil> It's not a bad idea
[09:56] <SpeedEvil> GPS time doesn't overflow
[09:56] <adamgreig> bold statement
[09:56] <fsphil> what happens if you lose gps lock?
[09:56] <thasti> from 235959 to 000000?
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[09:57] <SpeedEvil> Specific aspects of the GPS time signal repeat - but not in general
[09:57] <SpeedEvil> And yes - losing lock is clearly an issue
[09:58] <thasti> my idea was to just resend the last position (and therefore, the same time) if i lose lock - it increases the possibility of getting the last position - for example if the playlaods lands in a spot where it can't reaquire GPS lock, it just keeps transmitting the last position, easing reacovery?
[09:58] <thasti> that (of course) clashes with the idea of the sentence_id always counting up
[09:59] <SpeedEvil> The general approach is to use a sentance sequence number - and GPS coordinates - and a valid flag
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[09:59] <SpeedEvil> The sequence number means you can tell if the payload has reset - the GPS coordianates are the last valid fix - and the valid flag tells you if it's a live fix, or the GPS has stopped working, and is just repeating the position
[10:00] <SpeedEvil> Consider for example if you lose the signal for half an hour, regain it for a moment.
[10:00] <SpeedEvil> You want to know if the signal you get was from a live fix, or a fix from 20 mins ago as it lost lock. (if still in air)
[10:01] <SpeedEvil> Sending the GPS time too is useful for this.
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[10:02] <thasti> sending just the last GPS time seems to be enough for getting that information
[10:02] <SpeedEvil> yes - if you have no delays in packet reception
[10:03] <thasti> okay, so adding a valid flag seems like a good idea
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[10:04] <thasti> and what about the sequence number? how often can it overflow? is an 8 bit value enough?
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[10:06] <SpeedEvil> Sure - it's just to tell you if the payload has reset.
[10:06] <SpeedEvil> A value that won't repeat over the whole flight can be a bit easier though
[10:09] <UpuWork> ping jededu
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[10:12] <thasti> SpeedEvil: can it be in hex?
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[10:15] <frobble> Hi - newbie - is there a list of recent HAB balloon launches, rather just live tracking as spacenear.us ?
[10:16] <UpuWork> there is the mailing list
[10:17] <Geoff-G8DHE-M> also an iCalendar http://habitat.habhub.org/calendar/
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[10:30] <frobble> thank you
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[11:18] <SpeedEvil> thoren: sure
[11:18] <SpeedEvil> thasi
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[11:51] <Laurenceb_> B-63 passed 40000km
[11:52] <mattbrejza> aka circumference of the earth?
[11:52] <mattbrejza> (at equator)
[11:54] <Laurenceb_> yes
[11:55] <SpeedEvil> :)
[11:55] <SpeedEvil> I suspect it passed it yesterday
[11:55] <SpeedEvil> - with the missing data
[11:56] <SpeedEvil> But majorly cool
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[12:55] <amell> http://metro.co.uk/2014/08/08/hunt-is-on-for-12000-diamond-dropped-from-space-which-landed-in-british-field-4825796/
[12:55] <amell> anyone know anything about this? I cant see it on SNUS&
[12:56] <amell> I need to know what the tracker frequency is!!
[12:57] <amell> http://www.dailymail.co.uk/femail/article-2718765/Diamond-sky-Sparkler-worth-12-000-shot-SPACE-finds-lands-keeps-it.html
[12:57] <amell> I think this is a big con.
[12:58] <amell> ping daveake - is this yours?
[12:58] <daveake> nope
[12:58] <amell> if they had a tracker they would know exactly where it is.
[12:58] <daveake> they do
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[12:59] <daveake> they giving out clues. If it isn't found then the clues get closer. It's pretty simple
[12:59] <daveake> they're
[12:59] <amell> do you know if its broadcasting on 2m?
[13:00] <daveake> It's probably a spot
[13:00] <daveake> a radio tracker would be silly as it'd give an advantage to people like us
[13:02] <amell> im not about to dash off to lincolnshire with my laptop and dongle. I think it will be found very shortly.
[13:03] <amell> any idea who was involved? wondering if it is steve
[13:04] <daveake> no idea
[13:04] <mfa298> the DM article just said the shop in conjuction with CAA so I'd guess to it just being a SPOT as well. I'd doubt a 70cms tracker based on how well people here can be at finding un-announced balloons.
[13:04] <craag_philcrump> that 'rope' looks a bit overkill
[13:04] <amell> the chute does not look like ones that steve would use
[13:05] <daveake> Not sure I like the steel rod either
[13:05] <amell> the rope looks like it is over rated for regs
[13:05] <mfa298> plus the DM says it's the first diamond to go up on a Balloon and Steve has already done that
[13:05] <daveake> what regs?
[13:05] <amell> breaking force.
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[13:05] <daveake> what regs?
[13:06] <craag_philcrump> It's just the US that enforces the breaking force iirc
[13:06] <amell> dont the CAA specify max breaking force for rope used in balloons?
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[13:06] <amell> oh is that US only. ok.
[13:06] <daveake> And EU sometime in the future, possibly
[13:06] <craag_philcrump> But still - good practice IMO
[13:06] <daveake> certainly
[13:08] <amell> so does anyone here live near lea?
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[13:16] <fsphil> princess lea?
[13:17] <fsphil> she's quite far far away
[13:20] <daveake> Perhaps her brother could lend a hand
[13:24] <mfa298> Might take them a while to hunt for it on their zimmer frames (unless they age slower in that galaxy)
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[13:28] <nu0rr> hi, anybody up to date on good regulators on the market nowadays? :) Id need to generate +15V, 100 mA and +5V, 70 mA from a 12V supply. as clean as possible.
[13:32] <SpeedEvil> Boost converter to 16V, LDO, regulator to 5 from 12
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[13:32] <SpeedEvil> 12 to 5
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[13:35] <astrobiologist> does anybody know how late the rsgb bills you for the license exams? I am due to sit mine at the conference but rsgb still hasn't debited my account. should I be getting worried?
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[13:35] <craag_philcrump> astrobiologist: Don't worry, they've confirmed it, so will probably bill you next week.
[13:38] <astrobiologist> craag_philcrump: thanks that's a relief! just doing another round of revision now.
[13:38] <craag_philcrump> :)
[13:39] <craag_philcrump> They're a national body, so assume they do everything and the last minute and you'll never be surprised.
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[13:41] <astrobiologist> craag_philcrump: I hope my practical assignments were OK? Should've got Box to sponsor me :-)
[13:42] <craag_philcrump> They all looked good. I'm planning to review them at the weekend and write up your sheet.
[13:42] <craag_philcrump> How's the theory going?
[13:43] <astrobiologist> craag-p_philcrump: I think so, getting about 80% in mocks on hamtest.co.uk which should let me pass. disappointed by how many "trick" questions there are, really
[13:44] <craag_philcrump> Yeah, I think they have to put those in to make it look hard
[13:44] <daveake> :)
[13:45] <craag_philcrump> Have you tried the RSGB sample papers yet?
[13:45] <astrobiologist> craag_philcrump: I'm really grateful for all your help
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[13:46] <astrobiologist> crrag_philcrump: where do I find the RSGB sample papers? I've done the questions in the back of the intermediate book and a whole bunch of full mock sets on hamtest.co.uk
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[13:48] <SpeedEvil> I did the sample papers, and I can now identify 8 common birds.
[13:48] <daveake> tit
[13:48] <daveake> :)
[13:48] <Dark-Fx> booby
[13:49] <craag_philcrump> astrobiologist: http://rsgb.org/main/clubs-training/training-resources/intermediate-mock-exams/
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[13:51] <astrobiologist> craag_philcrump: thanks, bookmarked :-)
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[14:10] <malgar> I'm really curious about the position of B-64 :)
[14:13] <craag_philcrump> probably fallen off the edge
[14:15] Nick change: qyx__ -> qyx_
[14:15] <astrobiologist> you mean... the Earth is flat?? does it involve a giant turtle?
[14:16] <craag_philcrump> nah
[14:16] <craag_philcrump> dragons
[14:17] <astrobiologist> maybe b-64 is wedged in the dragon's cloaca
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[14:30] <ajay_> hello. Can anyone help me in how to power a ssb uhf radio while tracking a balloon?
[14:31] <craag_philcrump> Car cigarette lighter socket?
[14:31] <craag_philcrump> Else a 12V ex-alarm lead acid battery
[14:31] <fsphil> I sometimes keep a little sealed lead acid battery for that
[14:31] <craag_philcrump> I have a stock of the 7AH ones, very useful
[14:31] <ajay_> The radio has 2 banana plugs......
[14:32] <fsphil> what model of radio?
[14:32] <craag_philcrump> preferably put a non-reversible connector on it if you can
[14:32] <ajay_> I'm not sure of the exact model, I don't have it to hand at the moment. I know that it needs 11-15v and 13.8v DC.
[14:32] Action: craag_philcrump recently lost a nice inverter to a banana-plug mixup....
[14:33] <fsphil> ooch
[14:33] <ajay_> is there a way of using the cigarette socket with the banana plugs?
[14:33] <fsphil> I've seen crocodile clips with bananna plug sockets
[14:34] <craag_philcrump> Sure, buy a plug, some banana plugs, and some wire.
[14:34] <craag_philcrump> Solder them ip
[14:34] <craag_philcrump> *up
[14:34] <craag_philcrump> triple-check the poalrity
[14:34] <fsphil> http://www.electrongps.com/images/D/Enercell-Vehicle-Adapter.jpg
[14:34] <fsphil> hah
[14:34] <craag_philcrump> *polarity darn it
[14:35] <ajay_> oh that looks perfect.
[14:35] <fsphil> http://www.ebay.co.uk/itm/Cigarette-Lighter-accessory-plug-/131248365928
[14:35] <ajay_> i don't have a lot of electrical experience so i wouldn't be confident in soldering bits together
[14:35] <craag_philcrump> ok
[14:35] <ajay_> will this adapter will definitely work?
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[14:36] <fsphil> I don't own one, can't speak for how well built it is
[14:36] <fsphil> car accessories from ebay can sometimes be of dubious quality
[14:36] <ajay_> hmm ok. The other option i guess would be to use a 12v car battery and solder on banana jacks?
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[14:37] <fsphil> http://cpc.farnell.com/keysight-technologies/u1781a/lead-set-alligator-clip/dp/IN05799
[14:37] <fsphil> or something like that
[14:37] <fsphil> though I'm sure I've seen them without the cable
[14:38] <fsphil> http://www.ebay.co.uk/itm/2x-Miniature-2mm-Crocodile-Test-Clip-to-Banana-Socket-Made-ofNickel-Plated-Brass-/131052317616
[14:38] <ajay_> so the banana plugs connect to that and then onto the battery?
[14:38] <fsphil> yea
[14:38] <fsphil> doesn't say what current they can carry, but should be more than enough for a receiver
[14:39] <ajay_> awesome! thanks so much. Was racking my brain for ages tiring to figure it out!
[14:39] <fsphil> 2mm bananna
[14:39] <fsphil> what size is your plugs?
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[14:40] <ajay_> i pretty sure they are 2mm
[14:40] <fsphil> I think the ones I have here are all 4mm
[14:40] <fsphil> worth checking
[14:41] <ajay_> right ok. well now i know what to look for i'm sure i can figure it out. Thanks again.
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[14:55] <amell> 12 noon EST - LDSD balloon briefing with HD video from onboard at http://www.nasa.gov/multimedia/nasatv/index.html#.U-Tk1lacAXw
[14:56] <Laurenceb_> LSD balloon?
[14:56] <amell> LDSD
[14:56] <Laurenceb_> sounds relevant to my interests
[14:56] <amell> https://twitter.com/NASA/status/497746153560358913/photo/1
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[14:58] <amell> the diamond is still unclaimed.
[15:00] <mfa298> seeing scroll back. You really want to know what the radio is before getting cables and plugs. My TS-2000 draws ~2A on receive (not that it's really a mobile rig)
[15:02] <fsphil> it has a built-in heater?
[15:02] <mattltm> ic-7200 1.2A on receive
[15:02] <molo4> 2A isn't much
[15:03] <mattltm> ft-857 0.9A
[15:03] <ian_> In cooperation with the CAA, that would be a NOTAM then? Lincolnshire farmer takes shotgun to hoards of excited gem hunters trampling his field. (?)
[15:05] <amell> i hope hes got his harvest in
[15:05] <amell> otherwise they probably will get shot
[15:06] <amell> the rain is wreaking havoc with the farmers, they keep having to stop the harvest
[15:07] <ian_> [15:27] <ajay_> will this adapter will definitely work? With this level of certainty, you are possibly headed for a bad experience. Listen to the sage advice. Waggly banana plugs from an automotive battery are a recipe for a blown fuse at the lucky end of the specturm.
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[15:18] <ian_> *spectrum
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[16:03] Action: SpeedEvil waggles his banana.
[16:05] Action: andyfletcher averts his eyes
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[16:39] <Laurenceb_> why does CWOP-3 show on B-66 aprs ?
[16:39] <Laurenceb_> has portugal got a single packet through?
[16:41] <Laurenceb_> hmm gone now
[16:41] <Laurenceb_> maybe an aprs.fi bug
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[16:43] <mattbrejza> aprs? bugs?
[16:43] <mattbrejza> seems unlikely
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[16:47] <SpeedEvil> I guess any time now is likely - with portugal being lots more likely than anywhere else - or it'd have been picked up by an island.
[16:47] <SpeedEvil> (for 66)
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[17:29] <amell> ooh a third circumnavigation
[17:29] Action: amell wonders if there will be any more Bs
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[17:46] <malgar> amell: ??
[17:46] <malgar> I still see it in america
[17:46] <amell> I mean, new launches. B-67 is a long time coming
[17:46] <malgar> ibanezmatt13: how ig going your driving license? :D
[17:47] <malgar> ooh ok
[17:47] <ibanezmatt13> malgar, first lesson tomorrow, though toddling around in my mum's clapped out car which doesn't turn... doing well thanks :)
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[17:55] <amell> ibanezmatt13: have you practised your handbrake turn yet?
[17:55] <Dark-Fx> handbrake turns are for people who don't drive powerful rear wheel drive cars :-P
[17:56] <amell> I always laugh at those people in the snow.
[17:57] <Dark-Fx> my rwd car is summer only
[17:58] <ibanezmatt13> haha no amell :)
[17:58] <ibanezmatt13> I don't think the car is capable
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[18:02] <Upu> ibanezmatt13 did you get a call sign ?
[18:02] <ibanezmatt13> Of course :)
[18:02] <ibanezmatt13> M6NRB
[18:03] <Upu> nice :)
[18:03] <Upu> whens intermediate
[18:03] <ibanezmatt13> Well, I'm not sure yet, ASAP really
[18:03] <amell> as long as they are front wheel drive and the hand brake is on the rear wheels, it can do it. I did it in mini metro and mini 850s.
[18:03] <ibanezmatt13> hopefully early September ish, I'll have a word at the club on Monday
[18:04] Action: amell wants his call sign. shame he cant make the UKHAS conference
[18:04] <ibanezmatt13> :/
[18:04] <Upu> could have put you through it next Sat if you'd given us a bit of notice
[18:05] <ibanezmatt13> thought you only did foundation?
[18:05] <Upu> no we are doing Int for Oliver
[18:05] <ibanezmatt13> -_-
[18:05] <ibanezmatt13> damn :P
[18:05] <Upu> sorry
[18:05] <Upu> more notice next time
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[18:05] <ibanezmatt13> it's fine. I'll try and get it done pretty soon
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[18:12] <Lunar_Lander> hello
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[18:42] <mikestir> ibanezmatt13: have you had any QSOs yet?
[18:42] <ibanezmatt13> yeah, mainly on HF
[18:43] <mikestir> HF has been very noisy for me recently
[18:43] <ibanezmatt13> 20 or so I think, furtherst was Serbia and Poland but heard Israel and a few Canadians
[18:43] <ibanezmatt13> Yeah same here, last QSO was some time last week
[18:44] <ibanezmatt13> But performing well for a piece of wire I must say :)
[18:45] <ibanezmatt13> Just having lots of fun trying to settle on an injector plate design for a biprop rocket motor, while demonstrating terrible drawing skills
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[18:45] <fsphil> ah you're on da radio
[18:46] <fsphil> and already had more contacts than me
[18:46] <ibanezmatt13> lol
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[18:47] <fsphil> all voice contacts?
[18:47] <ibanezmatt13> yeah
[18:47] <fsphil> nice
[18:47] <ibanezmatt13> I almost had a CW one
[18:47] <fsphil> I've never managed to get heard on HF
[18:47] <fsphil> I sorta had a conversation with mattltm once
[18:47] <fsphil> but he could only just hear me
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[18:47] <ibanezmatt13> after calling CQ in morse, someone responded and I had no idea what they were saying, so I said there was much QSB, good bye.
[18:48] <fsphil> lol
[18:48] <mikestir> you're probably about the right sort of distance away for 40m fsphil
[18:48] <mikestir> given the sort of places I hear uk stations from
[18:48] <fsphil> yea it was 40m, but lots of static and noise at the time
[18:50] <mikestir> I wonder if we could have a QSO through one of the IoM repeaters with the aid of some hills - that would be a good challenge
[18:50] <ibanezmatt13> I was planning to head up a hill and try that IoM repeater some time
[18:50] <fsphil> possible. I can hear scotland occasionally up the local hill
[18:51] <fsphil> IoM is a wee bit further away
[18:51] <fsphil> but I could bring up the yagi
[18:51] <ibanezmatt13> me too :)
[18:51] <mikestir> I can access the blackpool repeater from here on the colinear - iom is about twice as far so I'm pretty sure it would need more height
[18:51] <fsphil> I might be heading up there this weekend sometime. I'll see if I can trigger their repeater
[18:52] <fsphil> wonder if it would annoy the locals :)
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[18:57] <mikestir> 6m seems to be open
[18:57] <mikestir> can you tx there fsphil?
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[19:00] <fsphil> I only have a small whip
[19:00] <arko> do you ghost ride it?
[19:00] Action: arko will see himself out
[19:01] <fsphil> had to google that
[19:01] <arko> hahaha
[19:01] <fsphil> people are WEIRD
[19:01] <arko> very
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[19:02] <arko> fsphil: https://www.youtube.com/watch?v=SBPJTK1YBvs
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[19:05] <fsphil> lol
[19:06] <arko> sorry, didnt mean to kill the conversation :P im off to lunch
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[19:07] <fsphil> ghost chatting
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[19:15] <ibanezmatt13> just found curiosity rover tracks on mars in google earth :)
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[19:49] <Reb-SM0ULC> evening!
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[20:12] <MaXimaN> ibanezmatt13: I checked that out a few days ago. It's a shame they don't have the very latest imagery. You can't even see Spirits landing pad, "Home Plate", etc.
[20:13] <ibanezmatt13> yeah it is, though perhaps they'll add more features like that eventually
[20:14] <ian_> Yes, more Martian street view :)
[20:14] <ibanezmatt13> yep :)
[20:15] <MaXimaN> I expect to see the faces of Martians blurred out to protect privacy
[20:18] <Laurenceb__> votes for martians
[20:19] <ian_> Ban Martians, they make you work rest and play!
[20:19] <ian_> I'm all for the Mars Bar
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[20:27] <Lunar_Lander> xD
[20:27] <ian_> Changes name to Mars_Lander :)
[20:27] <Lunar_Lander> :)
[20:29] <Reb-SM0ULC> I think lunar_lander is a great start for a HAB-name.
[20:29] <Reb-SM0ULC> :)
[20:29] <Lunar_Lander> :) yea
[20:29] <fsphil> think big
[20:29] <Lunar_Lander> like Örnen-II :)
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[20:30] <fsphil> I've only landed on earth so far
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[20:31] <Lunar_Lander> :) same here
[20:31] <ian_> Ha, Leo hasn't managed that yet . . .
[20:32] <fsphil> A few did .. and then took off again
[20:33] <fsphil> Leo's already done a sample return mission
[20:33] <fsphil> though it didn't return
[20:35] <arko> lol
[20:35] <ian_> Aparently you aren't in Armenia, best check!
[20:36] <ian_> When do you fly to the UK Arko?
[20:36] <jiffe> nasa sure censors a lot in that curiosity mosaic
[20:37] <Geoff-G8DHE> Curiosity mapping data some crude but up to date http://360.g8dhe.net/HAB_Flights/Curiosity.kmz
[20:49] <Reb-SM0ULC> fsphil: :)
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[20:52] <HA6NN> Ge all
[20:56] <Upu> evening
[20:57] <DL7AD> evening!
[20:57] <fsphil> aloha
[20:57] <MarkIreland> evening
[20:57] <MarkIreland> How many are sticking around after the conference?
[21:03] <ibanezmatt13> me :)
[21:03] <fsphil> me too
[21:03] <daveake> me three
[21:03] <Upu> derp Mark
[21:03] <fsphil> it's too long a walk home :)
[21:03] <Upu> everyone who is cool
[21:03] <ibanezmatt13> how's about a Sunday morning ukhas brunch then? :P
[21:03] <fsphil> hah
[21:03] <daveake> and passes the hotel off as a business expense :/
[21:04] <fsphil> I'll be about for a bit sunday morning too
[21:04] <ibanezmatt13> yeah same here
[21:04] <fsphil> long enough to get some breakfast anyway, then off to ye old luton
[21:04] <Upu> I'm off early on Sunday
[21:04] <Upu> think my train is at 10am but I'm certainly good for Sat night
[21:05] <Upu> oh bring your handheld M6NRB
[21:05] <daveake> Hotel includes breakfast so shall attempt to eat the largest % of the room that I can manage
[21:05] <fsphil> I don't have to leave till about 12
[21:05] <daveake> room cost ^
[21:05] <fsphil> breakfast was extra last time
[21:05] <fsphil> but I'm sure the website said it was included this time
[21:05] <ibanezmatt13> cool, what you mean the crappy Baofeng that can only do simplex without an external mic Upu? :)
[21:05] <daveake> is for me
[21:05] Action: fsphil checks
[21:06] <Upu> thats the one ibanezmatt13
[21:06] <daveake> I can bring 2 Baofengs
[21:06] <daveake> Then I can talk to myself
[21:06] <Upu> I can bring a spare Wuoxon :)
[21:06] <fsphil> yays
[21:06] <fsphil> I'll bring the yaesu, just to show off :)
[21:06] <daveake> Thus avoiding having to talk to anyone else
[21:06] <ibanezmatt13> sorted then :)
[21:06] <Upu> I'm bringing my Yaesu
[21:06] <Upu> so is LeoBodnar who is going to have his first actual QSO if it kills me
[21:07] <fsphil> hah
[21:07] <fsphil> look at us, proper hams
[21:07] <daveake> lol
[21:07] <ibanezmatt13> :)
[21:07] <LeoBodnar> so far my HAM experience was keying local repeater and listening for it's CW ID
[21:07] <LeoBodnar> it's fascinating
[21:08] <Upu> lol
[21:08] <LeoBodnar> well worth learning CW
[21:08] <Upu> five and nines on a repeater
[21:08] <daveake> Hey, Upu and I can talk to people about our dodgy eyes, and arko about his food-related accident
[21:08] <Upu> yup
[21:08] <daveake> then we'll sound like hams
[21:08] <ian_> I have a bus at Victoria around Mid day Sunday.
[21:09] <LeoBodnar> and complain about weather
[21:09] <Upu> I'm going to complain about the wing mirrors on the 57 plate Honda Jazz
[21:09] <arko> lol
[21:10] <Upu> I want to see more arko "art" again
[21:10] <Upu> http://i.imgur.com/hNQCHMe.jpg
[21:10] <Upu> btw lol if you zoom in and see what you were writing
[21:10] <arko> haha
[21:10] <fsphil> lol
[21:10] <SHARP-SATS> Will any of the conference be streamed - BATC?
[21:10] <fsphil> remember that
[21:10] <arko> i still have that paper
[21:10] <Upu> yes SHARP-SATS we hope so
[21:11] <Upu> some of it
[21:11] <arko> and my badge with "token american" on it
[21:11] <arko> good memories are worth keeping
[21:11] <Upu> there is one talk that won't be stream sadly
[21:11] <Upu> lol
[21:11] <LeoBodnar> is it NASA dress-up cheatsheet?
[21:11] <Upu> streamed
[21:11] <arko> LeoBodnar: that helmet is legit
[21:11] <arko> two antennas
[21:12] <Upu> Arko checking he's not bugged across the merdian : http://i.imgur.com/jaDrm5V.jpg
[21:12] <arko> haha
[21:12] <arko> :) this is all a week away from today!
[21:12] <arko> wooooooooooooooooooooooooo
[21:12] <LeoBodnar> his hand flipped over
[21:13] <Upu> I can confirm he didn't go wierd and reappear near the M4
[21:13] <arko> if only there was a hack there so i can just jump between home and the meridian
[21:13] <arko> no more flights
[21:15] <ian_> I did Brize Norton to SIngapore in a Britannia a couple of times - 30 hours in the air and a killer having to sit for that length of time.
[21:15] <arko> terrible
[21:15] <arko> i hate sitting for the 10 hours already
[21:15] <Flerb> Anyone know what mode this might be? https://db.tt/QbVwjjvc picked it up on 452.4mhz
[21:15] <Flerb> It's really really close
[21:16] <arko> worth it to hang out with yall though
[21:16] <Upu> fight sucks badly
[21:16] <Upu> need cheap Concorde back
[21:16] <arko> srsly
[21:18] <Upu> not sure Flerb
[21:18] <Flerb> Why'd they discontinue Concorde? I mean London to NY in 4 hours sounds great
[21:18] <MarkIreland> cool was away, but sounds good!
[21:18] <Flerb> I think it isn't carrying data
[21:18] <Upu> 2.5 hours wasn't it ?
[21:19] <fsphil> sounds like a ZX Spectrum Flerb
[21:19] <LeoBodnar> nah
[21:19] <ibanezmatt13> we need Skylon to get a move on :P
[21:19] <LeoBodnar> spectrum was more like AX.25
[21:20] <Flerb> Ahem ed ahem
[21:20] <LeoBodnar> on 1200baud
[21:20] <ibanezmatt13> lol
[21:20] <ian_> Flerb: they scrapped Concorde after the accident, because they realised that they no longer had a work force that could maintain it. All been made redundant years before
[21:20] <Upu> 3 hours 30 min
[21:20] <fsphil> it sounds like the bit where the loading graphic was appearing
[21:20] <LeoBodnar> oh the VRAM? yeah
[21:21] <fsphil> they never seemed to use compression
[21:21] <ian_> Where is Scotty when you need him to cut down the flight time?
[21:23] <Flerb> The flight out here was painfully boring
[21:23] <LeoBodnar> my laptop screen would need 12 hours to be transmitted using ZX Spectrum modulation
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[21:23] <fsphil> the zx spectrum has two shades of black
[21:23] <ian_> You still in Disney Land then? You will have missed the summer by the time you get back.
[21:24] <ian_> The zx spectrum has how many shades of grey?
[21:25] <HA6NN> quit
[21:25] <HA6NN> exit
[21:25] <HA6NN> Gn all :D
[21:25] <LeoBodnar> not allowed
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[21:25] <LeoBodnar> gn :D
[21:26] <LZ1DEV_> ??what
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[21:26] <LZ1DEV_> what is this ^
[21:26] Nick change: LZ1DEV_ -> lz1dev
[21:26] <ian_> Big brother can't figure out what you are trying to tell him.
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[21:27] <ian_> fsphil if you bring your Yaesu and someone asks a question about the menu's. will that cause a problem?
[21:28] <ian_> Looks up manual . . .
[21:29] <ian_> Contra intuitive when you need it most - the menus that is
[21:29] <Flerb> ian_: nah, in Lake Buena Vista
[21:29] <Flerb> Going to Disney world quite frequently
[21:29] <Flerb> Summer here is better
[21:30] <ian_> Not Bilighty was what I really meant. I have some sun in Madrid end of the month.
[21:30] <fsphil> I give up on the menus ian_. I trust the defaults
[21:31] <fsphil> though the lowercase g in their font really annoys me
[21:31] <ian_> Ha ha, wise man. I have an Icom IC7000 and every now and then I learn something else, but probably have most of the book yet to read.
[21:31] <fsphil> https://pbs.twimg.com/media/BuEJz_yIEAAwuk4.jpg:large
[21:31] <fsphil> grrrrr
[21:32] <fsphil> charGinG
[21:33] <ian_> I have a netbook that I use off line and MS regularly takes control and switches things off or wants to update when I look away for a few moments. Infuriating.
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[21:36] <Flerb> The amateur bands are dead silent here
[21:36] <fsphil> there's usually always something on 40
[21:37] <fsphil> 40m*
[21:37] <fsphil> wonder for how much longer there will still be shortwave broadcasters
[21:37] <fsphil> there can't be many people listening to them
[21:39] <Flerb> Its a shame really
[21:39] <ian_> You obviously haven't had painters and decorators in the offices. They all seem to have blaring radios - probably to numb the brain.
[21:39] <Flerb> But I guess these things get phased out
[21:40] <Flerb> Be nice if amateurs could get some of the band
[21:40] <Flerb> Well more of it
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[21:43] <andyfletcher> SW is used by several emergency service operators in the Middle East. I've been surveying their performance
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[21:43] <andyfletcher> Not many other systems work when you are 200km in the desert
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[21:53] <Reb-SM0ULC> ian_: do your painters really listen to shortwave=
[21:53] <Reb-SM0ULC> ?
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[21:55] <ian_> Good point Reb-SMOULC, probably FM. They probably didn't do a course to be able to tune an AM broadcast signal.
[21:56] <ian_> Never really noticed due to the brain numbing qualities and amplitude of said signal. Have had to remind people who actually owns the office from time to time. Not me of coures!
[21:56] <ian_> @course
[21:56] <Maxell> +31 6 313 497 82
[21:57] <Maxell> http://radio.nifhack.nl/ethnull.html :)
[21:58] <ian_> You going to be a painter and decorator Maxell?
[21:58] <Maxell> ian_: no doing some radio
[21:58] <Reb-SM0ULC> in sweden am is dead quiet in the daytime, with typical antenna. so impossible to receive
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[21:59] <ian_> Lol :) Got your tracker sorted OK?
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[22:11] <amell> any HAB launches in austria/southern germany in august?
[22:11] <amell> debating whether to take my gear or not.
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[22:17] <MarkIreland> anyone here?? http://metro.co.uk/2014/08/08/hunt-is-on-for-12000-diamond-dropped-from-space-which-landed-in-british-field-4825796/
[22:18] <amell> i asked same earlier. Nobody knows anything about this here.
[22:18] <MarkIreland> probably spot tracker
[22:18] <MarkIreland> or maybe sms etc
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[22:20] <jhodgkiss> Hello
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[22:20] <jhodgkiss> hello
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[22:21] <jhodgkiss> iam looking for some advice....
[22:21] <ian_> Ask jhodgkiss, although it is late for UK
[22:22] <jhodgkiss> thanks
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[22:22] <jhodgkiss> Iam looking for some firmware (source ode for a ballon transmitter)
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[22:23] <jhodgkiss> either mbed or aurduino. Its mainly for the transmitter signal format iam after.
[22:23] <ian_> Good start. Recommended is NTX2B transmitter. What processor are you using Arduino Uno (Atmel328pu)?
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[22:23] <lw2dtz> hello
[22:24] <ian_> hello, how are you - I feel a song coming on!
[22:24] <daveake> jhodgkiss What country is this for?
[22:25] <lw2dtz> Vey well, I'm form Argentina
[22:25] <jhodgkiss> either Mbed or arduino. what ever i can get my hands on. I plan on useing the standerd set up . GPS datalogger then transmit to ground using a standard format that anyone can decode (sdr dongle)
[22:25] <jhodgkiss> uk
[22:25] <daveake> See that
[22:26] <jhodgkiss> http://ukhas.org.uk/guides:linkingarduinotontx2 thanks this looks great..
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[22:26] <ian_> Between yourself and zeusbot that saved me a quick look for the reference . :)
[22:26] <jhodgkiss> i read about the ballon that travelled round the world last month on AMSAT.org and it inspired me to have a go.
[22:27] <lw2dtz> I plan to launch a ballon in two weeks and need a help to post the telemetry info on spacenear.us
[22:27] <fsphil> it's still flying jhodgkiss
[22:27] <daveake> lw2dtz You have a working radio tracker?
[22:27] <jhodgkiss> yeah i have been watching it on spacenear.us
[22:27] <lw2dtz> yes.
[22:28] <ian_> jhodgkiss, and even more, B63, made the round the world, followed by B64 and in a few days it looks likely that B66 will make it a tripple. Well inspired, enjoy!
[22:28] <fsphil> well one of the mis still going
[22:28] <fsphil> the others are out of contact atm
[22:28] <daveake> lw2dtz See http://habitat.habhub.org/genpayload/
[22:28] <daveake> You need to make a payload document that matches the sentence that your tracker sends
[22:28] <daveake> Then you can use dl-fldigi in online mode and it should* all work
[22:29] <lw2dtz> I made all that
[22:29] <daveake> So what's the problem?
[22:30] <lw2dtz> that not appear in the active flight lis
[22:30] <daveake> No it won't
[22:30] <daveake> You then need a flight document
[22:30] <daveake> and you then need to get that approved
[22:30] <lw2dtz> appear in the testing list
[22:30] <daveake> which you do by asking in #habhub
[22:30] <daveake> during office hours :p
[22:30] <lw2dtz> nobody
[22:31] <jhodgkiss> I have noticed that alot of information about building your own weather ballon is very fragmented all over the net.
[22:31] <daveake> yup
[22:31] <jhodgkiss> and a better dedicated site in needed..
[22:31] <MaXimaN> jhodgkiss: Making your own balloon envelope you mean?
[22:31] <daveake> feel free to fix that :p
[22:31] <lw2dtz> ok, I'll do during office time.
[22:31] <jhodgkiss> evything
[22:32] <Lunar_Lander> hello to argentina lw2dtz
[22:32] <MaXimaN> If it's your first flight I would keep it simple and don't worry about trying to construct your own superpressure balloon :)
[22:32] <Lunar_Lander> ian_, B-64 was first, followed by B-63 :)
[22:32] <jhodgkiss> i have been looking at these locations http://ukhas.org.uk/start
[22:33] <jhodgkiss> i was thinking of something small and simple with some simple data to report back.
[22:33] <jhodgkiss> i was thinking party ballon or even amazon now sell weather ballons
[22:33] <lw2dtz> hi lunar lander
[22:34] <MaXimaN> jhodgkiss: Ther eis a list of suppliers here: http://ukhas.org.uk/general:suppliers
[22:35] <mikestir> jhodgkiss: a (large) party baloon has the advantage of not requiring CAA permission to launch, but it has very limited lifting capacity
[22:35] <mikestir> your tracker would need to weigh no more than about 20 to 25g in total
[22:36] <mikestir> maybe a bit more if you are happy for it not to go very far
[22:37] <jhodgkiss> i am an electronics engineer and part of the appeal of doing this was to make a very small efficient flight computer.
[22:38] <MaXimaN> jhodgkiss: If you are starting small as mike suggested, you could go with an Arduino or Teensy board, ublox GPS module with active antenna, an ntx2 and a battery.
[22:38] <mikestir> if you're a pro then make your own board: http://www.mike-stirling.com/2014/06/tiny-balloon-tracker/
[22:38] <mikestir> you'll get it much lighter than bolting arduinos together
[22:39] <mikestir> of course if you prefer to do a high-alitude up/down flight then the weight is not so important
[22:39] <jhodgkiss> even better.. I have access to pro pcb manufacture so this is going to be my route.
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[22:40] <MaXimaN> jhodgkiss: Nice, then there's a lot of fun to be had. :)
[22:40] <jhodgkiss> :)
[22:40] <jhodgkiss> right were is the helium lol..
[22:41] <mikestir> that's another advantage of a foil floater - you hardly need any
[22:41] <mikestir> do you have any particular microcontroller experience?
[22:42] <jhodgkiss> I have work with a number of them from Mbed's nxp chup to arduinos and the STM32 controllers
[22:43] <mikestir> there's at least one person on here using STM32L series, and that one of mine uses a freescale Kinetis KL, which is similar
[22:43] <mikestir> a lot are based on atmega, although not necessarily using the arduino libraries
[22:43] <MaXimaN> mike: I hear the tools for the Kinetis series is much nicer
[22:44] <jhodgkiss> i have to say i like the Mbed compilers as they now support the STM32 chips as well as well as the mbed. i just prefer programming in c#
[22:44] <mikestir> MaXimaN: they have their processor expert thing, but tbh I tend to roll my own makefiles and libraries because I work with a lot of different devices in my day job so code portability is important
[22:45] <jhodgkiss> and i cant be botherd with Keils
[22:45] <mikestir> I would say that freescale's libs were poorer quality than ST's and NXP's, but the docs are good and the hardware is nice
[22:45] <mikestir> mbed is a framework not a compiler
[22:45] <mikestir> just download the linaro gcc toolchain
[22:46] <mikestir> ST provides a complete peripheral library, alhough not for much longer because they are going down the "processor expert" route as well
[22:48] <MaXimaN> mike: What were you clocking your M0+ at? I was just looking at your flight. That's a nice duration and distance on a single lithium cell :)
[22:49] <mikestir> it was AAA as well, and it went out of range with the battery still going fairly well
[22:49] <jhodgkiss> I have to go thank you for all your help is been much appreciated
[22:49] <mikestir> clocked off the internal RC oscillator except when it did a tx when it switched to the tx's clock so that it was synchronous with the pll to get the right symbol rate for the olivia modulator
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[22:50] <MaXimaN> Ahhh neat
[22:51] <MaXimaN> Have you done any further flights since that one? Any planned?
[22:52] <mikestir> I did an up/down flight with the same school a couple of weeks later, but I didn't use the ARM tracker on that. I have another three so I'll fly one at some point
[22:53] <mikestir> I want to try locking the oscillator to the gps ref before I do another one
[22:54] <mikestir> I was also thinking about adding APRS
[22:55] <MaXimaN> Make sure you use WIDE2-1 if you do. I hear that's a totally uncontroversial choice. ;)
[22:55] <mikestir> lol
[22:56] Action: MaXimaN hears a million HAMs grinding their teeth
[22:56] <mikestir> that's the sound of them crunching their pills
[22:56] <MaXimaN> Is there a power cost with locaking the oscillator to the gps ref through the GPS module sleeping less?
[22:57] Action: MaXimaN fears this may be a n00b question
[22:58] <mikestir> there might be. I haven't really looked at it at all yet, but I think the timepulse is still available in power-optimised-tracking mode, and I don't shut down any lower than that
[22:59] <MaXimaN> Worst case it's at a less power-optimised state during tx only
[22:59] <mikestir> well in the current design the gps is powered all the time anyway
[22:59] <mikestir> it only draws about 5mA at 1.8V
[23:00] <mikestir> shutting it right down means it spends 30 seconds drawing 50mA while it reacquires, so you have to shut down for quite a while to break even
[23:00] <MaXimaN> That's not bad at all
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[23:02] <mikestir> right I'm off. gn
[23:02] <MaXimaN> nn!
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[23:08] <Lunar_Lander> good night!
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[23:22] <myier> I'm implementing the power saving for uBlox (cyclic mode as described on ukhas). In the sample code, once there is a fix, the cyclic mode is set. However, in the text it's written that the mode should not be enabled with no lock or less than 5 sats. Does it mean that once it has a lock it can be considered locked for the whole flight?
[23:23] <myier> I would tend to say no
[23:24] <SpeedEvil> GPSs often lose lock occasionally, for no explicable reason
[23:24] <myier> yes, so that should be detected and the cyclic mode should be disabled when it happens
[23:24] <SpeedEvil> Ideally you'd watch the results and if you get under 5 - go to full power mode, and then back to cyclic
[23:24] <SpeedEvil> I suspect
[23:24] <myier> yes
[23:24] <myier> thanks
[23:25] <SpeedEvil> I've never used it
[23:26] <myier> I need to reduce power consumption
[23:26] <myier> I think I'll cut the onboard leds too, there is one always on on the Arduino Uno and one on the SD shield...
[23:27] <myier> I think there's something to do with the usb-serial thing too, I'm not sure if it's significant
[23:29] <SpeedEvil> Does arduino properly support power saving?
[23:29] <SpeedEvil> I know the AVR chip has reasonable power saving
[23:30] <myier> the main issue is the 5V power regulator, but anyway the GPS and NTX eat much more than the arduino (that's what Dave told me)
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[23:33] <SpeedEvil> Depends what you want to do
[23:34] <SpeedEvil> A transmission every 5 mins might mean you can sleep for most of the time - even with the ntx2 off. (though that ahs issues)
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[23:37] <myier> I'm transmitting with RTTY at 50 or so baud, and I'd like to keep transmitting all the time since it already takes 12s to send one message, if a few are not well received it can easily be a minute with no data
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[23:53] <andyfletcher> have you considered turning the power off to the uBlox completely when the battery starts to get low then powering it up every 30 minutes or so to get a location uptate?
[23:54] <myier> it's not for a floater, it's for a 2hrs flight, I'd like to have as much location updates as possible
[23:54] <andyfletcher> might extend the operational lifetime of the system
[23:54] <myier> the goal is to have it working at least 8 hours, not days
[23:55] <andyfletcher> Oh, 8 hours should be fine then
[23:55] <myier> I have many sensors, and it seems that it draws quite a lot
[23:56] <myier> I'll optimize a few things and that'll be fine yes
[23:56] <myier> with some margin
[23:56] <myier> the main issue is that the frequency drifs a lot when voltage is not stable, and voltage is not stable when current is too high
[00:00] --- Sat Aug 9 2014