highaltitude.log.20140427

[00:00] <Jeristair> im not sure, however it could be a possibility
[00:00] <esculca> :)
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[00:00] <esculca> so, someone
[00:01] <esculca> can help with interrupts with arduino mega
[00:01] <esculca> ?
[00:01] <Jeristair> Sorry, im no help with them, still learning the basics of arduino
[00:01] <esculca> Jeristair, what are you waiting to send a ballon?
[00:02] <Jeristair> sorry, im not sure what you are asking
[00:03] <esculca> about interrupts?
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[00:05] <esculca> who in this room has used habduino?
[00:06] <Jeristair> Hey, i'm quite interested in launching a balloon, however have no experience in doing so
[00:06] <Jeristair> where would be a good place for me to start learning
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[00:07] <esculca> in order for you to learn how to wash the dishes you have to break some
[00:08] <esculca> that's how i did it
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[00:08] <aadamson> anyone got any good references *besides the protocol docs* for aprs binary telemetry?
[00:08] <aadamson> examples would be helpful
[00:08] <esculca> are you using habduino aadamson?
[00:09] <aadamson> no rolling my own
[00:09] <esculca> me too
[00:09] <esculca> but based on habduino source code
[00:09] <esculca> but using arduino mega instead of uno'
[00:09] <esculca> are you using interrupts?
[00:09] <aadamson> esculca, stm32l1, with si radio, and digital pll, max 7 gps - https://dl.dropboxusercontent.com/u/6730484/DSCN2443.JPG
[00:09] <aadamson> yes
[00:10] <esculca> i see
[00:10] <aadamson> my afsk is done with a DDS at 125khz and baud at 26.447khz
[00:10] <esculca> ok
[00:10] <esculca> i understand the priciple
[00:10] <aadamson> and I modulate the digital pll as a vcxo to make fm
[00:10] <esculca> the only thing is that i using a bigger payload
[00:11] <esculca> and using areduino mega
[00:11] <esculca> damm interrupts
[00:11] <esculca> they are glueing the uP
[00:11] <aadamson> yeah... I've got ascii working, but need to look at the binary protocol next
[00:11] <esculca> you did a great job
[00:11] <esculca> nice board
[00:12] <esculca> congrats
[00:12] <aadamson> it's getting there, lots o help from the gang here... along the way - kudos to them all!
[00:12] <esculca> kudos means what?
[00:12] <aadamson> *pats on the back*
[00:12] <esculca> ok
[00:12] <esculca> :)
[00:13] <esculca> u're from the UK as well?
[00:15] <aadamson> no, atlanta
[00:15] <aadamson> GA, USA
[00:17] <esculca> oh
[00:17] <esculca> i'm from portugal
[00:17] <esculca> i lived in the us for a while
[00:17] <esculca> some time ago
[00:17] <esculca> in NY
[00:17] <g0pai_ian> esculca: I think you will need to ask your question before people go to bed for the night. Perhaps ask early tomorrow evening or during the day when there are people that can guide you. I'm going to bed, as I have to be up in the morning.
[00:18] <esculca> tks g0pai_ian, but i think i am managing to fid what the provle is
[00:18] <esculca> problem is
[00:18] <esculca> i am digging into the datahseet of the MEGA2560
[00:18] <aadamson> yeah sometimes there are night owls on here on the weekend, but indeed it's *late/early*
[00:19] <esculca> it's 1:19 am in here
[00:19] <amell> aadamson: nice layout. what are the six holes in the top and bottom edges for?
[00:20] <aadamson> .100 inch spaced header for power supply board(s).
[00:20] <aadamson> amell, took a chapter from upu - https://dl.dropboxusercontent.com/u/6730484/DSCN2438.JPG
[00:20] <amell> ok. and the small pads on the far left?
[00:20] <aadamson> need to move those down to the end of the board however, which I'll do on a board spin
[00:21] <aadamson> long thing ones middle rf out, other are ground so you could do a vertical with ground plane radials if you wanted
[00:21] <amell> that looks like a upu board ? :)
[00:21] <aadamson> however, today I got educated on how they now use *dipoles*
[00:22] <aadamson> don't *redesign* when someone has already proved it works
[00:22] <aadamson> I did have to figure out the schematic however
[00:22] <g0pai_ian> That's good, I'm looking to play with the ATMega328 chips. aadamson, I think they played with you. The read deal picture I haven't seen on here, so consider yourself set up!
[00:23] <aadamson> ah, no problem... I'm good, I have a dipole working just fine
[00:23] <amell> wish i could buy boards, I want to program habs, but not layout and send gerber files etc.
[00:23] <g0pai_ian> I don't normally think of a dipole as being located on either side of a receiver before . . .
[00:23] <aadamson> g0pai_ian, Tom took care of me - http://sp9uob.verox.pl/SEBA8/20140426_203707.jpg
[00:23] <amell> i could probably just do it with protoboard, but not for a pico surely
[00:23] <aadamson> just shorten one side of the dipole by the length of the board is all]
[00:24] <g0pai_ian> Tom wasn't in baiting mode . . . :-) It's not the specifics, just the thought of a large receiver at the feed point (totally)
[00:24] <aadamson> g0pai_ian, the RX just happens to be in the middle... dipole is just 2 1/4's attached to a feed point. RF out of the SI is feedpoint 1, and ground is feedpoint 2
[00:25] <aadamson> so the lenght of the board, just becomes part of the antenna
[00:25] <aadamson> hehe I especially like the solid cat 5 (or telco wire :))
[00:26] <g0pai_ian> It does make one wonder what else might be connecting into the feed point though - unintended. Stranded I think. solid is apt to waggle and fail. Can't have Leo's antennas dropping off over the Caspian sea
[00:27] <aadamson> Leo uses something else.. he told me up the screen... but I forget... solid as well I believe
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[00:29] <g0pai_ian> amell: the problem with buying boards at this complexity is that they are very specific to the actual components used with little room for bodging in alternatives. It's not like you are a Chinese penny pincher swapping in alternatives :-)
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[00:29] <amell> Id pay for a board with components on it, with a blank uC.
[00:30] <g0pai_ian> It's a steep learning curve. I'm pretty much at the bottom with little hope of scaling some of the heights - life is too short and I have too much else to do.
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[00:31] <g0pai_ian> You could ask, but would probably need support and so could end up sucking up someone's creative juices. Speak with Leo or one of the builders and see what they advise.
[00:32] <g0pai_ian> bed is calling. Good night all !
[00:32] <esculca> good night g0pai_ian
[00:32] Action: amell is toying with buying a laser cutter
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[01:31] <vk3pb> hi all
[01:31] <vk3pb> i see the balloon has headed back inland
[01:32] <vk3pb> it must have been attracted by Newcastle Airport (Balloons are attracted by Airports)
[01:33] <vk3pb> Andy you about?
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[05:35] <vk3pb> hi all
[05:35] <vk3pb> is Andy about?
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[05:48] <vk3pb> Is Andy's balloon down or still in the air?
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[06:51] <sp2ipt> Willdude123: that's not typical... it decodes APRS out of the box - can you hear the packets in audio stream?
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[08:00] <fsphil> morning all
[08:02] <sp2ipt> hi
[08:04] <vk3pb> hi
[08:04] <vk3pb> looks like Andy's balloon has gone to ground
[08:04] <eroomde> like an escaped criminal
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[09:10] <Sudent> Hi could someone take a look at my command list for my rfm init : http://pastebin.com/LPC4U50s , it's supposed to generate a unmodulated carrier on 434 mhz but when i turn my tx on nothing happens
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[09:16] <malgar> is SP3OSJ a floater?
[09:16] <malgar> Sudent: i don't know
[09:16] <malgar> anyway is a floater
[09:17] <Sudent> Ye i got it from the rfm22b library
[09:30] <daveake> lazy bot
[09:30] <daveake> Sudent, Try http://ukhas.org.uk/guides:rfm22b
[09:30] <daveake> Note the ANT connections
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[09:55] <Sudent> daveake, thats exactly what i have
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[10:17] <vk3pb> hi all
[10:17] <vk3pb> anyone around
[10:17] <vk3pb> ?
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[10:24] <Herman-PB0AHX> gm all
[10:24] <Reb-SM3ULC> vk3pb: hello
[10:24] <vk3pb> hi everyone
[10:25] <vk3pb> looks like Andy's ballon might have come down
[10:25] <Darkside> yep
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[10:25] <Darkside> would have descended, then gone out of range of APRS
[10:25] <vk3pb> it seemed to be descending quite slowly
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[10:25] <Darkside> yeah, the foil balloon would have ruptured
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[10:28] <vk3pb> is the altitude calculated from sea level or from the ground below?
[10:30] <Darkside> vk3pb: sea level
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[10:30] <vk3pb> I noticed it was going over mountains and thought that might be the reason the altitude was falling
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[10:31] <vk3pb> It was a pretty good effort to make it to northern nsw
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[10:34] <tweetBot> @G7IGB: Balloon repeater to launch from Suffolk on Sunday: On Sunday, April 27 at around 11am... http://t.co/o8laMSg8uw #hamradio #ukhas
[10:34] <Darkside> rr
[10:34] <Darkside> err
[10:34] <Darkside> how
[10:34] <Darkside> oh
[10:35] <Darkside> james's sthing
[10:36] <Reb-SM3ULC> hope ha can get it running soon
[10:37] <LeoBodnar> it has been cancelled
[10:37] <vk3pb> 11am - is that like 1100 utc?
[10:37] <Darkside> LeoBodnar: why was it cancelld?
[10:37] <LeoBodnar> for technical reasons
[10:38] <LeoBodnar> i think some GPS problems?
[10:38] <Darkside> ahh
[10:39] <vk3pb> hi Leo
[10:39] <vk3pb> just looking at your flight tracker you have in your shop
[10:39] <vk3pb> loks interesting
[10:39] <vk3pb> looks
[10:39] <vk3pb> does it have a gps onboard?
[10:40] <Darkside> vk3pb: its just a beeper
[10:40] <vk3pb> oh...
[10:40] <vk3pb> darn...
[10:40] <vk3pb> im trying to find a kit for a hf tracker
[10:40] <LeoBodnar> it's a new system written from scratch so i can understand some problems
[10:40] <Darkside> vk3pb: selling complete trackers is kind of frowned upon
[10:41] <LeoBodnar> no vk3pb it is for free flight models
[10:41] <Darkside> vk3pb: why a HF tracker?
[10:41] <LeoBodnar> they use DF to locate
[10:41] <vk3pb> notin thsi case
[10:41] <Darkside> flying HF antennas is a bit dangerous
[10:41] <vk3pb> obviously im a ham
[10:41] <vk3pb> and I dont want to fly the tracker
[10:41] <Darkside> oh you want a HF APRS unit?
[10:41] <vk3pb> i want to put it in a bottle and chuck it in the sea and track it
[10:41] <Darkside> ah hhaah
[10:41] <Darkside> yeah the problem with that is the antenna
[10:42] <vk3pb> not so
[10:42] <Darkside> it'd ned to be a stabilised vertical
[10:42] <vk3pb> easily fixed - use a vertical
[10:42] <Darkside> yes, but its going to be huge
[10:42] <LeoBodnar> stick sonar on it and read the papers
[10:42] <Darkside> its going to be a big bottle
[10:42] <vk3pb> of course - heavy object under the water maintains tehbottel vertically
[10:42] <vk3pb> i dont think so. 1 litre bottle size maybe
[10:42] <vk3pb> pico bottle
[10:42] <Darkside> err
[10:43] <Darkside> then its going to be a very very inefficient HF transmitter
[10:43] <LeoBodnar> s/sonar/37.5kHz pinger/
[10:43] <vk3pb> thats perfectly fine. at least ill have a good ground plane
[10:43] <Darkside> mm
[10:43] <vk3pb> i couldnt track that from 1000 miles
[10:43] <LeoBodnar> hmm i can't see it working at all
[10:44] <vk3pb> alternatively...
[10:44] <vk3pb> fm aprs
[10:44] <LeoBodnar> radiator should be sticking up
[10:44] <Darkside> anyway, loaded vertical could work
[10:44] <vk3pb> yes - vertical radiatior (1/4 wave on 2m)
[10:44] <LeoBodnar> the only solution i see is either massive vertical VLF dipole
[10:44] <LeoBodnar> or microwave to a sat
[10:44] <LeoBodnar> *two solutions
[10:45] <Darkside> but it would be horribly inefficient still, and you wouldn't have the TX power to get over the antnna inefficiencies
[10:45] <vk3pb> what about fm aprs on 145.800? = ISS
[10:45] <Darkside> vk3pb: perhaps, but iy wouldnt work very often
[10:45] <vk3pb> with solar panel in bottle
[10:45] <Darkside> and still doesnt work in the middle of the ocan
[10:45] <Darkside> as theres no igates in th emiddle of the ocean
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[10:45] <vk3pb> ISS flies over everywhere
[10:45] <Darkside> ISS is still LEO, so the footprint isn't *that* big
[10:46] <Darkside> yes, but it just digipeats packets
[10:46] <Darkside> if there is no satgate in the ISS's footprint, then its not goign to work
[10:46] <vk3pb> true but at least coevers everywhere at least once a day
[10:46] <Darkside> it doesn't store and forward
[10:46] <vk3pb> no it does true aprs
[10:46] <Darkside> it just digipeats immediately
[10:46] <LeoBodnar> vk3pb: it does not store and forward
[10:46] <vk3pb> ummmm...
[10:46] <LeoBodnar> immediate digipeats
[10:46] <Darkside> i have workd the ISS many many times.
[10:46] <Darkside> well, worked th eAPRS digipeater
[10:47] <vk3pb> are you sure it doesnt store and forward for aprs?
[10:47] <Darkside> yes
[10:47] <Darkside> very sure
[10:47] <LeoBodnar> no it does not
[10:47] <vk3pb> i have worked teh aprs digi myself successfully
[10:47] <vk3pb> darn
[10:47] <Darkside> i mean,s ure it stores and fowards
[10:47] <Darkside> but it stores it and forward it immediately
[10:47] <vk3pb> oh well ill have to content myself with Olivia then or JT-65
[10:47] <vk3pb> on hf
[10:47] <LeoBodnar> it has BBS but i think it is as good as dead
[10:47] <Darkside> vk3pb: you'd ned better than that
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[10:48] <Darkside> well, JT65 maybe
[10:48] <vk3pb> how woudl you do it then. You have a bottle you want to track in the middle of the ocean...
[10:48] <LeoBodnar> why not sat uplink?
[10:48] <Darkside> vk3pb: sat
[10:48] <Darkside> iridium
[10:48] <vk3pb> wouldnt that cost a lot?
[10:48] <Darkside> not as much as you'd think
[10:48] <vk3pb> and sort of defeat the purpose?
[10:48] <Darkside> go google the rockblock
[10:49] <vk3pb> the idea is to use ham radio
[10:49] <Darkside> yes, but theres a thing called a link budget
[10:49] <LeoBodnar> isn't kraken doing it? http://track.poseidon.sgsphysics.co.uk/#
[10:49] <Darkside> and its kind of hard to work against physicss
[10:50] <Darkside> LeoBodnar: talks via iridium
[10:50] <vk3pb> jt-65 is pretty efficient though
[10:50] <LeoBodnar> yeah i mean Kraken was using the Iridium
[10:51] <Darkside> vk3pb: it still has a limit
[10:51] <Darkside> and while people have made contacts with milliwatts, they're running milliwats into a full-size, efficient antenna
[10:51] <Darkside> not into a short whip
[10:51] <Darkside> yes, it will have a good ground plane, but the antenna is still going to be tiny
[10:52] <Darkside> and hence very inefficient
[10:52] <vk3pb> yes i suppose it would be a short fraction of a wavelength
[10:52] <Darkside> you may be abl to get away with something shortened on, say, 10m
[10:52] <Darkside> but 10m propagation isn't 'reliable'
[10:53] <vk3pb> reminds me of the problems of transmitting 160m with a handheld
[10:53] <Darkside> for ideal communications you would need to band-hop
[10:53] <Darkside> though 30m would be a good starting point if you were to do single-band
[10:53] <Darkside> but again, antenna will be horribly inefficient
[10:53] <vk3pb> 20m would be a shorter wavelength
[10:54] <Darkside> well, yes
[10:54] <LeoBodnar> you also have power problems
[10:54] <Darkside> i guss if you only want to gt a position once a day or somthing, maybe 20m could work
[10:55] <Darkside> power is a pain, definitely
[10:55] <Darkside> with a shortened antnena, you'd be wanting to put in a fw watts
[10:55] <Darkside> few*
[10:55] <Darkside> LeoBodnar: it may be possible actually
[10:55] <vk3pb> you are right... will need to think about this a bit more...
[10:55] <Darkside> though you;d nd to do some pretty serious power calcs
[10:55] <LeoBodnar> from one side you want a burst of high energy to efficiently use batteries, from the other a long coherent transmission to get over HF problems
[10:56] <Darkside> LeoBodnar: some of mt research work is focussing on this
[10:56] <Darkside> power efficiency of HF modes
[10:56] <Laurenceb_> no sign of B-46?
[10:56] <vk3pb> one advantage is that a small solar panel coudl build up some real power
[10:56] <Darkside> LeoBodnar: this is why while WSPR is cool and all, it takes 2 minuts to transmit
[10:56] <Darkside> which at 5W is a fair bit of power
[10:56] <LeoBodnar> yeah, it's mostly experimental research rather than pure math
[10:57] <Darkside> LeoBodnar: yep
[10:57] <Darkside> i'v got a beacon running right now tsting some of this stuff :P
[10:57] <Darkside> testing*
[10:57] <vk3pb> which mode?
[10:57] <LeoBodnar> cool
[10:57] <Darkside> vk3pb: many
[10:57] <Laurenceb_> it might have missed the aprs in russia, but still be flying
[10:57] <vk3pb> is it on wsprnet?
[10:57] <Darkside> vk3pb: its not WSPR
[10:57] <vk3pb> aprs?
[10:57] <Darkside> no....
[10:57] <LeoBodnar> there is no APRS in Russia :/
[10:58] <Darkside> its an experimental beacon
[10:58] <LeoBodnar> at least in that part
[10:58] <vk3pb> any mode that i can look at on the internet?
[10:58] <Darkside> i'm testing a range of modems
[10:58] <Darkside> mainly MFSK based ones
[10:58] <Darkside> though at the moment its runningPSK
[10:58] <Darkside> doing some power variation tests
[10:59] <vk3pb> dont they have aprs in russia?
[10:59] <Darkside> as in, over the course of an hour, i transmit a data block with different power levls
[10:59] <Darkside> to build up an approximate PER vs SNR plot
[10:59] <vk3pb> i woudl have thought they had all modes
[10:59] <Darkside> vk3pb: population in russia is sprad out
[10:59] <Darkside> spread*
[11:00] <vk3pb> ok
[11:00] <Darkside> running an APRS ntwork over such a larger area is difficult
[11:00] <vk3pb> where in russia are you leo?
[11:00] <Darkside> its not that they dont have APRS, its that they dont have a big enough ntwork to be useful
[11:00] <vk3pb> i like watching those russian youtube crash videos
[11:01] <vk3pb> looks crazy over there
[11:01] <Laurenceb_> or russian roads videos
[11:01] <vk3pb> yes those ones - the car crash videos
[11:01] <vk3pb> i must get myself a cam for my car :)
[11:02] <vk3pb> anyway these pico balloon flighst look like fun
[11:03] <vk3pb> and a good opportunity to try out some new dgital modes
[11:03] <vk3pb> it woudl be great to send sstv from a pico balloon
[11:04] <Darkside> SSDV maybe
[11:04] <vk3pb> can you guys recommend a small microcontroller with shields that woudl be ok for a pico balloon?
[11:04] <Darkside> not enough power budgt to do SSTV really
[11:04] <LeoBodnar> B-46 is somehere North of lake Baikal if it is still alive
[11:04] <Darkside> vk3pb: pico requires custom designs
[11:04] <Darkside> every microcontroller + shield solution will be too heavy
[11:05] <Darkside> total payload weight needs to be <50g
[11:05] <vk3pb> i saw some miniature arduinos that looked liek they might be usable
[11:05] <vk3pb> they had shields for gps etc
[11:05] <vk3pb> they were REALLY small
[11:05] <Darkside> and ideally lighter than that for a foil balloon launch
[11:05] <Darkside> yeah, but i doubt it'd be 50g small
[11:05] <LeoBodnar> when i hear "shield" i am reaching for my revolver
[11:05] <Darkside> lol
[11:05] <Upu> haha
[11:06] <Maxell> I like how the gps errors make this nice raster https://i.imgur.com/Caij06j.png VK3YT
[11:06] <vk3pb> http://tiny-circuits.com/
[11:06] <Upu> just make your own vk3pb
[11:07] <vk3pb> where can i get a design to work from?
[11:07] <Darkside> well that GPS probably wont work >18km
[11:07] <vk3pb> anything open source?
[11:07] <Darkside> vk3pb: very simpl to design one
[11:07] <Darkside> arduino reference design is a good place to start
[11:07] <Darkside> then add peripherals
[11:07] <Upu> thats all I did
[11:07] <Darkside> gps, radio module, switchmode power supply
[11:07] <Darkside> tc
[11:07] <Darkside> etc*
[11:07] <Darkside> then the next trick is making it tiny and light
[11:07] <Darkside> and lower the power consumption
[11:08] <Upu> these "*duino" are just an AVR, crystal thats about it
[11:08] <LeoBodnar> Maxell: it's not errors it's cnscious limiting of GPS position precicion
[11:08] <Upu> Start here : http://itp.nyu.edu/physcomp/Tutorials/ArduinoBreadboard
[11:08] <LeoBodnar> so no 52.9746532499, -1.094561508947 but 52.9746, -1.0945
[11:08] <LeoBodnar> *conscious bleh
[11:09] <vk3pb> ok thanks
[11:09] <vk3pb> also
[11:09] <vk3pb> http://microduino.cc/
[11:09] <vk3pb> i thought that device looked pretty cool
[11:10] <Darkside> problem is adding things like headers, more PCB material, etc, adds weight
[11:10] <Darkside> and every gram counts with a pico
[11:11] <vk3pb> what weight budget is typical?
[11:11] <LeoBodnar> 1 gram on a pico ~ 300m altitude
[11:11] <vk3pb> with a pico balloon?
[11:11] <LeoBodnar> when total payload is 12g
[11:11] <Darkside> vk3pb: well you need to be under 50g in australia
[11:11] <LeoBodnar> when it's 50g it does not matter
[11:12] <Darkside> vk3pb: all of andys pico launchs are in the 'small' balloon category, which doesnt require notams
[11:12] <Maxell> LeoBodnar: so thats basicly rounding errors?
[11:12] <LeoBodnar> yes
[11:12] <Darkside> i should not that said category only talks about payload weight, not balloon weight
[11:12] <Darkside> so from my reading, a <50g payload with a 1600g balloon is fin
[11:12] <Maxell> Wow, I did not knew GPS so so precice.
[11:12] <Darkside> fine*
[11:12] <vk3pb> what happens if a light aircraft hits one of these?
[11:12] <LeoBodnar> 0.0001 is ~ 11m on Equator
[11:12] <Darkside> vk3pb: it chews it up and spits it out
[11:13] <vk3pb> so its not dangerous then?
[11:13] <Darkside> maybe leaves a tiny scratch on the prop
[11:13] <Maxell> Oh wait, small houses. :P
[11:13] <Darkside> vk3pb: wouldnt cause any damage
[11:13] <Maxell> But but it's jumping all over the place.
[11:13] <Darkside> might freak out the pilot a bit
[11:13] <vk3pb> and if a jet hit it at high speed?
[11:13] <Darkside> vk3pb: nothing would happen
[11:14] <Darkside> it would go straight through the engine
[11:14] <vk3pb> ok
[11:14] <LeoBodnar> well you see random values falling through a equally spaced sieve holes
[11:14] <Darkside> even our big payloads would get chewed up and spit out
[11:14] <vk3pb> its not the engine i was worried about, it was tehwindscreen
[11:14] <vk3pb> the windscreen
[11:14] <Darkside> wouldnt do anything
[11:14] <vk3pb> ok then
[11:15] <vk3pb> sounds like a fun project
[11:15] <vk3pb> is there a yahoo group for peopel building these , or a community somewhere?
[11:15] <Darkside> easier to start wigh a big launch
[11:15] <LeoBodnar> in that respect i much prefer soft puch LiPo to AA battery
[11:15] <Darkside> vk3pb: you're in it
[11:15] <vk3pb> you mean you guys always ahng out here?
[11:15] <vk3pb> hang ou
[11:15] <vk3pb> out
[11:15] <LeoBodnar> ther's nothing solid metal on my tracker
[11:16] <LeoBodnar> my hands are speaking different language from my brain it seems
[11:16] <vk3pb> i see a network of receiving stations up and down the east coast of australia
[11:16] <vk3pb> are they amateurs who hang out here too?
[11:17] <Upu> sometimes yes
[11:17] <LeoBodnar> Maxell: did you get that?
[11:17] <vk3pb> i mean - are their receivers up 24/7?
[11:17] <Darkside> no
[11:17] <Darkside> only whn something interesting is goin gon
[11:18] <vk3pb> what mode is usually used (apart from aprs)?
[11:18] <SpeedEvil> FSK serial at 50bps
[11:18] <LeoBodnar> It depends on the year
[11:18] <SpeedEvil> 400hz or so shift often
[11:19] <vk3pb> i see b45, 46 travelled a long way. how were they tracked?
[11:20] <Darkside> theres a slow move towards error-corrected MFSK modes like THOR and Olivia, but those require A) considerably more software work, and B) custom radio modules to acheive the appropriate tone shift
[11:21] <vk3pb> but all this si still on 434 mhz or 2m?
[11:21] <vk3pb> is
[11:22] <Darkside> mostly 70cm
[11:22] <Darkside> as in, 434MHz ism band
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[11:22] <Darkside> vk3pb: the UK guys can't use amateur radio airborne, so they have to use the 434MHz ism band, which just so happens to fall within 70cm
[11:22] <vk3pb> oh yes, those little tx, rx modules
[11:22] <Darkside> in australia, we can run on whateve rband we want
[11:22] <Darkside> i'v been waiting for somone to make a 6m payload :P
[11:23] <vk3pb> what about a 160m payload :)
[11:23] <Darkside> too hard
[11:23] <Darkside> i've done 40m
[11:23] <Darkside> and the antenna was stupidly long
[11:23] <vk3pb> what range did it get?
[11:23] <Darkside> not much
[11:23] <Darkside> wasnt doing neough power
[11:23] <Darkside> enough*
[11:23] <Darkside> and i dont like flying HF payloads, as it means having a huge length of wire in the wir
[11:24] <Darkside> remember that we live in a dry country.
[11:24] <Darkside> think about what happns if your payload lands over power lines
[11:24] <Darkside> in the UK, maybe tyou black out a town
[11:24] <vk3pb> woudl it be possible to fit a solar panel (tiny) into a pico link budget?
[11:24] <Darkside> in australia, you start a bushfire
[11:24] <Darkside> vk3pb: been done. LeoBodnar has don eit
[11:24] <Darkside> done it*
[11:25] <vk3pb> ok then based on all teh above what combination of frequency and mode gives the best range in a pico balloon?
[11:26] <Darkside> well unless you're flying HF, which is not going to work on a pico anyway, your range is limitd by line of sight
[11:26] <LeoBodnar> ~300-400km typically
[11:26] <vk3pb> I saw Andy did a balloon that went over nz
[11:26] <Darkside> 10-25mw of 50 baud RTTY will be receivable to the horizon
[11:26] <Darkside> somtims further
[11:26] <vk3pb> which was pretty cool
[11:26] <Darkside> vk3pb: that was APRS, at 10mW
[11:26] <Darkside> fair bit more complicated doing APRS on a pico, and his implementation is not perfect
[11:27] <Darkside> apparently its a bit distortd, and some receivrs wouldn't dcode it
[11:27] <vk3pb> has leo done sstv ?
[11:27] <Darkside> anyway, 50 baud RTTY is far easier to implement and is a good start
[11:28] <Darkside> vk3pb: SSTV as you know is difficult to do on a balloon
[11:28] <Darkside> there is a mode called 'SSDV' which is basically SSTV, but with digital images sent over RTTY
[11:28] <vk3pb> its all difficult!
[11:28] <Darkside> quite slow though
[11:28] <vk3pb> ssdv - must look into that
[11:28] <Darkside> vk3pb: anything that requires any degree of linearity is difficult
[11:29] <Darkside> also, cameras on pico payloads are difficult too
[11:29] <Darkside> optics can be heavy
[11:29] <vk3pb> true
[11:29] <Darkside> and a camera would use a lot of power (probably)
[11:29] <vk3pb> hang on...
[11:29] <vk3pb> i remember
[11:29] <vk3pb> have you see teh raspberry pi cam?
[11:29] <Darkside> yes, sure
[11:29] <vk3pb> that's quite light
[11:29] <Darkside> thats the kind of module im talking about
[11:29] <Darkside> sure, but it requires a raspberry pi, which isnt
[11:30] <Darkside> those cameras have ben flown many tims btw
[11:30] <Darkside> been*
[11:30] <vk3pb> Darside are you a ham?
[11:30] <Darkside> vk3pb: de VK5QI
[11:30] <vk3pb> cool
[11:30] <Darkside> i'm from PRoject Horus
[11:30] <vk3pb> nice to make your aquaintance
[11:30] <Darkside> the 'original' australian HAB group :P
[11:30] <vk3pb> oh yes i remember you gusy. i sent you a go pro or something liek that
[11:31] <Darkside> heh ok
[11:31] <vk3pb> no really. but subsequent emaisl didnt get replies
[11:31] <vk3pb> im not sure if I inadvertently upset someone
[11:31] <Darkside> vk3pb: thats probably because terry is a very busy individual
[11:32] <Darkside> and is now working full time
[11:32] <vk3pb> aha
[11:32] <vk3pb> btw are you familiar with the vidcast I help make?
[11:32] <Darkside> most of the group has less fre time now
[11:32] <Darkside> i've heard of it
[11:32] <Darkside> thats about all
[11:32] <Darkside> i have som friends that follow it
[11:32] <vk3pb> amateurlogic.tv
[11:33] <vk3pb> it is what it is
[11:33] <vk3pb> and theres now a new uk vidcast called tx factor
[11:34] <Darkside> yeah
[11:34] <Darkside> heard about that too
[11:34] <vk3pb> all available on youtube
[11:34] <vk3pb> and of course ham nation
[11:34] <gonzo_> did JC launch his 869meg payload??
[11:34] <Darkside> gonzo_: no
[11:34] <Darkside> gps problms apparently
[11:34] <Darkside> urgh, need to get to bed
[11:35] <gonzo_> rr ta.
[11:35] <Darkside> spend all weekend working on foxhunting stuff
[11:35] <vk3pb> ok thansk for the help
[11:35] <Darkside> spent*
[11:35] <gonzo_> I'll have to get my system set up if there is going to be some 869 meg activity
[11:35] <gonzo_> in future
[11:36] <vk3pb> gonzo are u a ham?
[11:36] <gonzo_> yep
[11:36] <vk3pb> call?
[11:36] <gonzo_> g0nzo
[11:36] <gonzo_> not very originla!
[11:36] <vk3pb> oh you are in the uk!
[11:37] <vk3pb> what do you think of tx factor?
[11:37] <gonzo_> yep. this is originally a UK based channel, but is getting more international as time goes on
[11:38] <gonzo_> is that the internet tv chan??
[11:38] <vk3pb> internet tv show
[11:38] <vk3pb> has had 2 episodes so far
[11:38] <vk3pb> made in uk
[11:38] <gonzo_> have heard mention of it, but not seen it.
[11:39] <vk3pb> check it out. its very well made.
[11:39] <gonzo_> most of my actual radio operating is HAB recepotion these days
[11:39] <vk3pb> do you make your own pico trackers?
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[11:40] <gonzo_> I like building radio kit, but can''t stand talking on the AR bands
[11:40] <Darkside> lol
[11:40] <Darkside> i was out portable this afternoon, working UK stations on 20m long path
[11:40] <Darkside> with 10W!
[11:40] <vk3pb> im shortly going to be building a small 40m transceiver
[11:41] <Darkside> vk3pb: gonna do SOTA stuff?
[11:41] <vk3pb> sota?
[11:41] <Darkside> >_>
[11:41] <gonzo_> in the 25+yrs I've beel licenced, I've made 2 HF QSOs. And one was with someone on this chan, as a PSK test
[11:41] <Darkside> do you rad AR?
[11:41] <Darkside> read*
[11:41] <Darkside> theres been segments on SOTA in AR every month for a while now
[11:41] <vk3pb> when ia see a copy
[11:41] <Darkside> SOTA = Summits on the air
[11:41] <vk3pb> not for a while though
[11:41] <vk3pb> oh yes
[11:41] <Darkside> operating HF portable
[11:42] <vk3pb> ive heard of this
[11:42] <vk3pb> it was covered in one of the tx factor episodes
[11:42] <vk3pb> they had a ham working up on a mountain in relatively cold weather
[11:42] <gonzo_> in the UK, some sota stations use V/UHF. Even 10GHz has been done
[11:42] <vk3pb> i mainly do atv and a bit of hf
[11:43] <vk3pb> i just upgraded to a digital transmitter
[11:43] <gonzo_> what bands are used for ATV in au??
[11:43] <Darkside> gonzo_: 23cm and 70cm
[11:43] <Darkside> 23cm uplink, 70cm downlink for the fancy repeater in VK3
[11:43] <vk3pb> our local repeater has a 70cm output which can be viewed on an ordinarly digital tv. uplink is dvb-s on 1.2 ghz
[11:44] <vk3pb> we also have a 10 ghz uplink
[11:44] <vk3pb> we also have the 2.4 and 5 ghz bands available for atv
[11:45] <gonzo_> I've not used ATV for a long time. But the moves to DVB-S are interesting. And stand alone enclders are getting affordabe
[11:46] <gonzo_> looks like we may get another MHz of 2mtrs in the UK. But restricted for new experimental modes. And DATV is one
[11:46] <gonzo_> Even hopes for soem allocation at band 1
[11:46] <Darkside> we're hoping for a low band VHF allocation now that analog TV has been switched off
[11:46] <Darkside> it might happen..
[11:47] <vk3pb> the digital encoder i just got is the datv express board - cost about $300
[11:47] <vk3pb> relatively inexpensive
[11:48] <gonzo_> do you think you may get 70MHz alocation over there ??
[11:48] <Darkside> probably not
[11:48] <Darkside> theres still low-band VHF commercial stuff around
[11:48] <Darkside> i'd prefer it if we got 60m first
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[11:48] <Darkside> we're already haemmoraging 70cm spectrum
[11:49] <Darkside> we had 420-450, then we lost 420-430
[11:49] <vk3pb> here too
[11:49] <Darkside> and i'm expcting we'll lose 440-450
[11:49] <vk3pb> we lost the bottom end of 70cm
[11:49] <Darkside> since it's prime real estate for commercial stuff
[11:49] <gonzo_> we've had it for a long time. But just a small slot, within the commercial stuff. But the commercial bands are so quiet now, that the regulator can't give them away
[11:49] <Darkside> anyway, 440-450 is prtty much ATV only
[11:49] <Darkside> and some repeater links
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[11:50] <Darkside> 430-440 is whre most of the action is
[11:50] <vk3pb> anyway must go
[11:50] <vk3pb> thansk for teh chat
[11:50] <Darkside> 73
[11:50] <vk3pb> 73
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[11:50] <gonzo_> we only have the 430-440. And that is too busy for analogue tv these days. But DAV opens it up to us again
[11:50] <gonzo_> tarra
[11:52] <gonzo_> but all the VHF is almost unwanted ui uk. But to get any of it, we have to prove that we will do someting new
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[11:52] <Darkside> you guys have pagers in 146-148, right?
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[12:02] <mikestir> we're getting 146-147 shortly, with a NoV
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[12:07] <WillTablet> Hoo-ray. Time to set up my favourite, most easy to use packet engine
[12:08] <WillTablet> It'd be easier to get a cheap second hand tnc
[12:09] <Darkside> lol
[12:09] <Darkside> buy an OpenTracker USB
[12:09] <Darkside> https://www.argentdata.com/catalog/product_info.php?products_id=148
[12:09] <Darkside> $45
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[12:42] <Willdude> If a function from an external library is called in C, can gdb look at what happens inside that?
[12:42] <nats`> if you have source yes
[12:43] <nats`> if not you can but only in asm
[12:43] <mfa298> things like stat will show you what system calls are made but wont show you all the internals.
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[12:46] <Willdude> mfa298, ah. There's one problem set that uses a file for all the student-written functions
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[12:51] <Willdude> mfa298, I wrote a binary search algorithm in a file that has all the student written functions, the only time it compiles is when included in the main program. It is supposed to return true if a value is found in a given array
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[12:55] <gonzo_> Darkside, the 146-148 was police/fire. They have moved to 420ish digital. There are pagets at 138 and 150+ which are a bugger, as most are 100W and some iffy TX's about
[12:57] <Darkside> we have pagers on 148.5-149MHz
[12:57] <Darkside> which is a pain
[12:57] <Darkside> my state has a state-wide pager network on 148.8125MHz, with most stations running 200W
[12:57] <jiffe98> Darkside, which state is that?
[12:58] <Darkside> 2m radios need a strong frontend to be usabl in this state
[12:58] <Darkside> South Australia
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[13:04] <jiffe98> cool
[13:15] <jiffe98> we've been using argentdata trackers for our past couple launches, they work pretty well
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[13:20] <Racer_J> The balloon B-45 doesn't really flew from the UK to India?
[13:21] <LeoBodnar> why not?
[13:22] <LeoBodnar> It's a regular service we offer
[13:22] <daveake> Leo is the Ali of HAB - nobody else gets a pico to float like a B
[13:22] <LeoBodnar> calling at Azores
[13:22] <Upu> your payload (mass <1g) delivered anywhere in the world +/- 12000km accuracy
[13:23] <bertrik> with bonus tracking service
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[13:23] <Racer_J> Okay, I didn't think that the payload was so small :)
[13:25] <Upu> 15g or something
[13:26] <tweetBot> @daveake: My #raspberrypi #UKHAS balloon flight appeared just now in a C4 trailer between The Big Bang Theory and The Simpsons. My life is complete :p
[13:28] <Racer_J> Is it a good idea to carry a solar board with or doesn't pay it off?
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[13:34] <LeoBodnar> 12g currently
[13:35] <LeoBodnar> you might as well retire daveake!
[13:35] <daveake> haha :)
[13:35] <LeoBodnar> at the peak
[13:39] <Upu> I fixed the rain for you LeoBodnar
[13:39] <Maxell> LeoBodnar: yes about the "prefer soft puch LiPo to AA battery".
[13:39] <Upu> in return could you turn the sun back on pls
[13:44] <LeoBodnar> i am trying to igite it
[13:44] <LeoBodnar> Maxell: about GPS positions pattern
[13:46] <Maxell> "random values falling through a equally spaced sieve holes" ah
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[13:46] <Maxell> cute yes
[13:46] <Maxell> But that would be GSP in-accuracies
[13:47] <Maxell> daveake: yay congratz on the C4 trailer
[13:47] <LeoBodnar> yes Gaussian
[13:47] <Maxell> Do you have the finished trailer on youtube?
[13:47] <daveake> Yeah just search for "heston great british food"
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[13:48] <daveake> https://www.youtube.com/watch?v=ptFZZ-uB7l0
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[13:57] <malgar> gqrx: I see a fake(??) peak in the middle of the graph. What is it? how to delete it?
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[13:58] <LeoBodnar> it's I/Q imbalance perhaps
[13:59] <nats`> malgar yes IQ inbalance
[13:59] <nats`> if you use stuff like sdr# you can use their correcting algo
[13:59] <nats`> or you just use I or Q
[14:00] <malgar> I use gqrx
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[14:01] <malgar> O just checked the box: enable IQ balance
[14:01] <malgar> but nothing changes
[14:01] <nats`> so just put your center freq away
[14:01] <nats`> like some kHz lower or upper
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[14:06] <bertrik> I usually tune way off the center with SDR, like 1/4 of the SDR bandwidth away from the central peak
[14:09] <nats`> hey it was true there was a big trash of ET the games !
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[14:22] <Jed_edu> Any idea what causes all the stop masks in eagle when I run the hackvana DRC
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[14:24] <eroomde> be more specific Jed_edu
[14:24] <eroomde> just saw you daveake
[14:24] <eroomde> on tv
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[14:31] <Jed_edu> This is what i am getting http://www.primarypi.co.uk/sm.png
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[14:31] <eroomde> what package is that?
[14:32] <mattbrejza> the solder mask overlaps the silk
[14:32] <mattbrejza> so it moans
[14:32] <Jed_edu> 0603
[14:32] <mattbrejza> but you can generally ignore those errors as the pcb house wont print over pads
[14:32] <eroomde> indeed. wierd that it has a spot in the middle though
[14:33] <LeoBodnar> they will remove overlap
[14:34] <LeoBodnar> however some Chinese just print silkscreen over pads
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[14:35] <mattbrejza> also the silk isnt usually aligned well enough to accuratly put a nice dot in the middle of a 0603
[14:35] <Jed_edu> Ok thanks so just ignore it im using hackvana anyway
[14:35] <mattbrejza> a better footprint would be to draw a box around the part
[14:38] <LeoBodnar> silkscreen is for faint at heart
[14:38] <LeoBodnar> or for kits lol
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[14:39] <eroomde> or for old test gear
[14:39] <eroomde> it's only useful when they observe a naming convention for increasing numbers from the top-left (or whatever)
[14:39] <eroomde> randomly distributed part numbers are super annoying
[14:40] <LeoBodnar> whodunnit?
[14:40] <LeoBodnar> silkscreen use is art
[14:41] <LeoBodnar> the goal is to make the design self-documented
[14:41] <LeoBodnar> just sticking bunch of Cs and Rs is no big help
[14:42] <LeoBodnar> functional borders, key measurements, signal paths, it can all be there
[14:42] <LeoBodnar> s/can/should/
[14:44] <mattbrejza> label all your headers too
[14:44] <nats`> http://evil.t4ke.me/~nats/led_modules/WP_000124.jpg <= or to make the baord sexy :p
[14:44] <nats`> board
[14:49] <LeoBodnar> lol
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[14:57] <Lunar_Lander> hello
[14:57] <DL7AD> hi Lunar_Lander
[14:57] <Lunar_Lander> hi
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[15:09] <LeoBodnar> could someone confirm this
[15:09] <LeoBodnar> B-45 start time 11 April 2014 15:20
[15:09] <LeoBodnar> last position time over New Delhi 19 April 2014 12:36
[15:09] <LeoBodnar> or am i one day out?
[15:10] <LeoBodnar> DL7AD: what was the date/time from the Indian chap position?
[15:10] <DL7AD> ehm.....
[15:11] <DL7AD> when we got the position?
[15:11] <DL7AD> 2014-04-19 12:35:52
[15:12] <DL7AD> UTC of course
[15:12] <LeoBodnar> well this make 189 hours flight time
[15:12] <LeoBodnar> B-11 was 187 hours i think
[15:13] <DL7AD> ehhh..... could be
[15:13] <LeoBodnar> So B-45 squeezed into the 1st place then?
[15:13] <DL7AD> yes sure
[15:13] <LeoBodnar> i might send this to ARHAB then
[15:13] <DL7AD> :D cool
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[15:14] <DL7AD> how long has been B-46 on its way already?
[15:15] <DL7AD> up to the last known point?
[15:17] <LeoBodnar> 166 hours
[15:18] <LeoBodnar> more than poor B-12
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[15:21] <LeoBodnar> Haha New Delhi time is UTC+05:30
[15:23] <LeoBodnar> "Hi Leo, my VX-8DR picked up your balloon APRS beacon yesterday..I was trying to IGate after receiving information from Sven, DL7AD using a TH-D7A with UI-VIEW..at around 16:49 India time [ 11:19 UTC ] dated 19/04/2014 showing its Latitude and Longitude as 29.26.76N, 77.20.05E
[15:23] <LeoBodnar> so it's 11:19UTC
[15:23] <Lunar_Lander> interesting
[15:23] <LeoBodnar> 188 hours
[15:24] <DL7AD> he? from who did you get this?
[15:24] <LeoBodnar> email from Sandeep VU2MUE
[15:25] <DL7AD> okay..... i thought we got the right time out of the pictures.... LeoBodnar
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[15:26] <LeoBodnar> did pictures have time?
[15:27] <LeoBodnar> oh timestamp?
[15:27] <DL7AD> yes local time
[15:27] <LeoBodnar> it could be when they were downloaded
[15:27] <DL7AD> nope..... because it has been stored in his device
[15:28] <LeoBodnar> stored in which device?
[15:28] <DL7AD> in his handheld
[15:28] <DL7AD> anyway its downloaded in ui-view immediately
[15:29] <LeoBodnar> did we have picture with time on hendheld?
[15:29] <DL7AD> i think so
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[15:31] <Lunar_Lander> LeoBodnar, does that mean that B-46 is still working and crossing India at the moment?
[15:32] <DL7AD> Lunar_Lander: no B-46 hasnt been in india so far
[15:32] <LeoBodnar> B-46 is in Russia
[15:32] <Lunar_Lander> yes
[15:32] <Lunar_Lander> so the message is about B-45?
[15:32] <DL7AD> yes
[15:32] <LeoBodnar> B-45 was in India a week ago and have not been seen since
[15:32] <LeoBodnar> yeah M0XER-5 was B-45
[15:33] <Lunar_Lander> ah
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[15:36] <esculca_> hi everyone
[15:37] <esculca_> anyone can help with APRS decoder?
[15:37] <DL7AD> hi esculca_
[15:37] <esculca_> hi DL7AD
[15:37] <esculca_> have you used APRS?
[15:37] <DL7AD> yes
[15:37] <esculca_> over 144.800 MHz?
[15:37] <DL7AD> yes i do
[15:37] <DL7AD> im using an th-d72
[15:37] <esculca_> do you use SDRShapr?
[15:37] <esculca_> SDRSharp?
[15:38] <DL7AD> from time to time
[15:38] <DL7AD> but my ft-847 is more sensitive
[15:38] <esculca_> i don't have a yaesu
[15:38] <esculca_> SDR is the best i have
[15:38] <DL7AD> esculca_: do you wanna decode aprs by sound?
[15:38] <esculca_> the thing is
[15:39] <esculca_> i am able to listen somthing over 144.800
[15:39] <esculca_> someone is transmitting around here
[15:39] <esculca_> and myseld as well
[15:39] <esculca_> then I pipe it to a virtual cable
[15:39] <esculca_> to another software
[15:39] <esculca_> AFSK 1200 decoder
[15:40] <esculca_> but nothing appears there
[15:40] <DL7AD> but you cant send it to the aprs-is right?
[15:40] <DL7AD> its not transmitting it to the aprs server
[15:40] <DL7AD> you can do this with multipsk
[15:40] <DL7AD> but its horrific complicated
[15:40] <DL7AD> i can explain it to you how to use it
[15:40] <esculca_> do you know this AFSK 1200?
[15:41] <DL7AD> yes
[15:41] <DL7AD> working fine but it doesnt sent the messages to the internet
[15:41] <esculca_> does it work?
[15:41] <esculca_> ok, so let me start with that
[15:41] <DL7AD> with multipsk?
[15:41] <esculca_> even with this software i should be able to decode the packets
[15:41] <esculca_> no
[15:41] <esculca_> with mine
[15:42] <DL7AD> afsk 1200 simple but it will show just raw data
[15:42] <esculca_> i don't see a single byte arriving :P
[15:42] <esculca_> should i download multipsk?
[15:42] <DL7AD> hm?
[15:43] <DL7AD> yes... http://f6cte.free.fr/MULTIPSK.ZIP
[15:43] <esculca_> ok
[15:43] <esculca_> btw, dlfldigi doesn't decode APRS?
[15:43] <DL7AD> nope
[15:43] <DL7AD> unfortunately not
[15:43] <esculca_> any reason for that?
[15:44] <DL7AD> esculca_: just noone implement it
[15:45] <DL7AD> *implemented
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[15:47] <esculca_> ok DL7AD I'll give it a try on Multipsk
[15:47] <esculca_> thanks for the help
[15:47] <esculca_> be back later
[15:47] <DL7AD> ask me when you got it downloaded
[15:47] <esculca_> tks again
[15:47] <esculca_> cheers
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[17:01] <Reb-SM3ULC> mm
[17:01] <Reb-SM3ULC> B47 to go? :)
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[17:05] <daveake> well it's been days since the last one :p
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[17:09] <jcoxon> looks like it
[17:10] <jcoxon> well: http://www.isleoflying.com/
[17:10] <daveake> haha
[17:10] <daveake> Needs an upgrade
[17:10] <daveake> www.howmanyisleoflying.com
[17:14] <Maxell> LeoBodnar: heh. "real world" aprs also does this. http://aprs.fi/#!mt=roadmap&z=17&call=a%2FPD5P-6&timerange=604800&tail=604800
[17:14] <Maxell> Thats a local ham being aprs portable/mobile with his scooter in his garage
[17:14] <Maxell> :P
[17:16] <malgar> today I tested the yagi listening to the ntx2 *without* payload antenna. 100-200-500 m good signal, 1500 m quite weak
[17:16] <malgar> is it normal?
[17:16] <LeoBodnar> Maxell: he is using Mic-E APRS encoding which is apart from being worse than Spanish inquisition is also limited to ~20m resolution by design http://aprs.fi/?c=raw&call=PD5P-6&limit=50&view=decoded
[17:16] <malgar> should it get better with payload antenna?
[17:17] <malgar> or.. "a lot better"?
[17:17] <LeoBodnar> posresolution: 18.52 m
[17:17] <Maxell> rofl lo
[17:17] <Maxell> lolol LeoBodnar
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[17:17] <LeoBodnar> but it's compact
[17:17] <Maxell> malgar: no antenna? eek high swr
[17:17] <Maxell> LeoBodnar: worth it
[17:17] <LeoBodnar> but it's compact because APRS has not been designed for being compact
[17:18] <LeoBodnar> but it's still part of the design spec
[17:18] <malgar> Maxell: the payload antenna is ready but I still have to add it to the payload
[17:19] <Maxell> The 70cm aprs repeaters here are very low on packets. Traffic on the 70cm aprs is virtually non excisting. I am doing something about it by not using MIC-E and having a modrest update rate
[17:19] <LeoBodnar> Upu: done! Anything else? [14:39] <Upu> in return could you turn the sun back on pls
[17:19] <Maxell> .hehe 52.07116666666667
[17:20] <Maxell> Oh mine also does that sometimes
[17:20] <Maxell> http://aprs.fi/?c=raw&call=PD1ODE-9&limit=5&view=decoded :(
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[17:21] <LeoBodnar> Maxell: the best GPS resolution in APRS is via compressed position reporting, it is ~0.3m http://aprs.fi/?c=raw&call=M0XER-6&limit=5&view=decoded
[17:22] <LeoBodnar> Mic-E GPS is not counting in decimal digits
[17:22] <LeoBodnar> that's why you see what you see
[17:23] <Maxell> hmm, aprsdroid is spitting out about 18.52 m of resolutuin
[17:23] <Maxell> resolution
[17:23] <Maxell> Am I doing something wrong?
[17:26] <LeoBodnar> that's MIC-E probably
[17:26] <Maxell> aprsdroid is doing mic-e?
[17:27] <arko> daveake: damn, looks like i need to upgrade the website
[17:28] <LeoBodnar> what? service interruption?
[17:29] <arko> not yet
[17:29] <Maxell> fuuuuu
[17:32] <Willdude123_> LeoBodnar, how come your balloons seem to have gone so much further than anyone else?
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[17:43] <Maxell> Willdude123_: APRS, solar power
[17:46] <Willdude123_> Maxell, APRS?
[17:46] <Willdude123_> What?
[17:46] <LeoBodnar> lots of luck
[17:51] <Maxell> Willdude123_: yes. a lot of packets have been retieved over aprs
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[17:52] <Maxell> But also the stable transmitter had played part of it
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[18:00] <LeoBodnar> Interesting flihgt profile for SP3OSJ http://spacenear.us/tracker/?filter=SP3OSJ
[18:00] <LeoBodnar> classical loss of helium at the peak of the day
[18:01] <LeoBodnar> it ZPed but has been kept afloat by solar heating (aka hot air balloon)
[18:01] <LeoBodnar> when the sun came down it descended
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[18:03] <LeoBodnar> if somebody writing a paper that would be a very good illustration
[18:03] <LeoBodnar> possibly micro hole
[18:04] <Jed_edu> what frequency B47
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[18:05] <LeoBodnar> 434.500 USB
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[18:14] <jcoxon> any flight predictions?
[18:16] <DL7AD> jcoxon: i'll done one as soon as it reaches the float altitude
[18:16] <DL7AD> *do one
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[18:18] <Jed_edu> got it :)
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[18:24] <tweetBot> @NORB_HAB: Check out the result of NORB's first pyro cut down test using some washing line: http://t.co/3uuBEE0NeE #ukhas #flames :)
[18:26] <LeoBodnar> oh
[18:26] <LeoBodnar> where's pyro?
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[18:26] <LeoBodnar> but nice!
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[18:27] <Willdude> Maxell, oh, I didn't realise you could run aprs on balloons launched from the UK
[18:29] <mfa298> Willdude: when operating under a reciprocal license (e.g. CEPT) you operate with the regulations of the place visited (or that your over)
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[18:32] <Willdude> Ahhh. That makes sense
[18:37] <adamgreig> except in the USA
[18:37] <adamgreig> where the CEPT licence is ... weird
[18:42] <eroomde> yo
[18:45] <LeoBodnar> it's nice problem to have
[18:47] <Temsa> Has anyone done a small PMR repeater balloon?
[18:47] <eroomde> PMR is not legal to fly airborne in the UK
[18:47] <eroomde> where most of us are
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[18:49] <Temsa> I understand, but there is no harm can try Hi
[18:49] <eroomde> there is harm in the uk
[18:49] <eroomde> assuming it's a free-flying balloon
[18:50] <eroomde> if you're not in the uk, you're welcome to try, assuming your laws allow!"
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[18:50] <Willdude> eroomde, I think it's time for another Ofcom van photoshop
[18:52] <Temsa> That's why I asked if it was one of the convenient connection of the public. Right about free-flying and the light version.
[18:53] <eroomde> a thered balloon would probably work quite usefully for the job
[18:53] <eroomde> tethered*
[18:53] <LeoBodnar> or a good mast
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[18:55] <eroomde> mast would be way better in most cases, i'm sure
[18:55] <Temsa> Now, if you first should not even tried my first ball. even in the planning.
[18:56] <eroomde> ?
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[18:57] <Temsa> I hope the summer
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[18:57] <LeoBodnar> Are you in Suomi Temsa ?
[18:58] <aadamson> LeoBodnar, Upu did either of you find either a proximity or a power supply noise issue with the pv/lipo controller?
[18:58] <aadamson> I've found that if it's too close to the gps chip that the gps sensativity is dramatically effected.
[18:58] <LeoBodnar> on GPS?
[18:58] <aadamson> move it away and all is good
[18:58] <aadamson> LeoBodnar, yes with the GPS... sorry
[18:59] <eroomde> split the ground plane
[18:59] Action: eroomde ducks
[18:59] <LeoBodnar> not sure, they are separated by design
[18:59] <aadamson> eroomde, ah, come on I've got thicker skin than that :)
[18:59] <LeoBodnar> lol
[18:59] <aadamson> yeah I think it's related to my design.
[19:00] <aadamson> I put the connection pins for the lipo/pv controller up too far. Sets the pv controller above and only slighly below the gps
[19:00] <aadamson> if I plug the power board onto it's header such that it positions that way, very poor gps performance
[19:01] <aadamson> if I remove it from it's header, build a little jumper wire connection scheme and move it away from the gps. gps sensativity is back to what it should be
[19:01] <Temsa> Yes i m FIN
[19:01] <Willdude123_> Temsa, are you using google translate?
[19:01] <LeoBodnar> you need to consult your local guys on airborne use, you have a very strong ham community there
[19:02] <LeoBodnar> and they will be the first to bject if it's not right
[19:02] <LeoBodnar> *object
[19:02] <LeoBodnar> =complain
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[19:07] <Temsa> I do not understand very well the language. sorry
[19:09] <LeoBodnar> it's OK :)
[19:11] <chrisstubbs> New laptop wont take a standard 3 pole 3.5mm jack input. Have to get a 4 pole splitter to connect the radio to it. How annoying!
[19:12] <eroomde> how odd
[19:12] <adamgreig> same as the macbook airs
[19:12] <adamgreig> I just got a £3 ebay usb soundcard instead
[19:12] <adamgreig> added insulation
[19:12] <adamgreig> isolation
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[19:15] <Babs> Got my reaction wheels balanced and installed https://www.flickr.com/photos/91049302@N00/14038645584/
[19:16] <adamgreig> nice :D
[19:16] <eroomde> awesome sauce
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[19:17] <eroomde> might have to get the details of your cnc man off you
[19:17] <Babs> he is mega
[19:17] <Babs> i also found out he cncs blue polystyrene
[19:17] <Babs> totally going to scan in my camera and get a milled housing
[19:17] <eroomde> yeah
[19:17] <eroomde> nice
[19:18] <Babs> in all seriousness he is very good
[19:18] <DL7AD> oO http://en.wikipedia.org/wiki/1956_B-47_disappearance
[19:18] <Babs> he has a homemade jig but it works pretty well
[19:18] <chrisstubbs> They use foam and wax a lot for practice and setting up so you dont break your cutters :)
[19:19] <eroomde> i'd love to build a small, good cnc mill
[19:19] <eroomde> like, with high quality ground ballscrews and ground flat granite beds
[19:19] <eroomde> and one of those 50krpm spindles
[19:21] <eroomde> these things
[19:21] <eroomde> http://www.ebay.co.uk/itm/KAVO-MOTOR-SPINDLE-EWL-DRIVER-Typ-4442-2MOTORS-4041HY-Max-50-000-min-500W-CNC-/161078219921?pt=LH_DefaultDomain_0&hash=item2581029491
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[19:21] <eroomde> it's almost worth getting those now to keep in stock for a rainy day
[19:21] <chrisstubbs> flickr finally loaded, mmm carbon fiber
[19:26] <amell> LeoBodnar: when is B-47 leaving us?
[19:27] <eroomde> launches are births amell
[19:27] <eroomde> not deaths
[19:27] <amell> well, they never come back do they...
[19:28] <eroomde> not to the womb
[19:28] <eroomde> neither do people
[19:28] <amell> Im surprised nobody has returned one of leos lost balloons yet.
[19:28] <chrisstubbs> might be a lack of contact info
[19:28] <chrisstubbs> I put my details on mine and have had 2 back so far
[19:29] <mattbrejza> people on here go chasing after B-* occasionally
[19:29] <amell> does he put contact info on them?
[19:31] <DL7AD> amell: nope
[19:31] <aadamson> this is encouraging... I was sleeping until 15 seconds prior to a beacon, figuring that was adequate time to allow the GPS to warm/hot start (I didn't go to sleep until I had a valid solution from the GPS). The above worked as expected while on a boost controller, but on a pv/solar
[19:31] <aadamson> it would never resync from the gps
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[19:32] <eroomde> i usually go for a glass or two of red wine, rather than waiting for a gps lock, to go to sleep
[19:32] <aadamson> I read the datasheet and figured ok, worst case is 28second on warm start so I extended that to 30 seconds and still no better
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[19:32] <aadamson> that's when I found the pv/lipo controller issue with interference with gps
[19:33] <aadamson> Now, with that controller separated, 30 seconds prior to beacon I wake up, turn on the gps, it's locked by the time I'm ready and out goes a valid posit... yeah, success one little step at a time
[19:33] <aadamson> it's funny, I never had this issue until I went to the pv/solar controller *stand alone*
[19:34] <amell> DL7AD: whyever not?
[19:42] <arko> Babs: nice reaction wheel!
[19:43] <Babs> Hey arko - thanks! there are two in there as a fudge because I don't know how to reverse a brushless motor
[19:43] <Babs> so they go at relatively different speeds
[19:43] <Babs> have no idea of torque yet until i hang it and play around with the PID program I've written
[19:44] <eroomde> it's not a fudge
[19:44] <eroomde> it's jolly clever
[19:44] <eroomde> as you no longer have the horrible non-linearity from stiction if you change direction
[19:44] <arko> some speed controllers have a programable linear/log mode
[19:45] <arko> you can choose how the pwm maps out
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[19:46] <arko> the downside with the cheapo hobby ESC's is that they have a wide forward range but the reverse is just like 10-20% of the forward
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[19:47] <eroomde> yeah
[19:47] <eroomde> rc stuff is just hateful
[19:47] <eroomde> really hateful
[19:47] <eroomde> so craply documented and full of surprises
[19:47] <arko> and poorly designed
[19:47] <arko> yep
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[19:47] <aadamson> just build yourself one of these - http://vedder.se/2014/01/a-custom-bldc-motor-controller/
[19:48] <LeoBodnar> yeah is your motor 4 tuen eroomde ?
[19:48] <arko> Babs: I imagine you want it to go reverse and forward right?
[19:48] <LeoBodnar> *turns
[19:48] <arko> one wheel
[19:48] <eroomde> my motor?
[19:48] <LeoBodnar> RC motors
[19:48] <eroomde> i don't have a motor atm
[19:48] <aadamson> or these can be had very inexpensively vai china - http://autoquad.org/esc32/
[19:48] <LeoBodnar> they are measured in "turns"
[19:48] <eroomde> oh i see
[19:48] <eroomde> yes
[19:48] <eroomde> or kV
[19:48] <LeoBodnar> nothing else
[19:48] <eroomde> which has nothing to do with voltage
[19:48] <eroomde> as far as i can tell
[19:48] <LeoBodnar> psst, I have good 5-turner
[19:49] <amell> dont you need custom ESC firmware?
[19:49] <LeoBodnar> or two motors: one is 500g another is 1kg, which one would you choose?
[19:49] <arko> eroomde: kV is a stupid measure of rpm/volt
[19:49] <aadamson> both of the 2 I posted are open source one hard/soft, the other soft only
[19:49] <eroomde> arko: yes i know
[19:49] <arko> ah
[19:49] <eroomde> which is retarded
[19:49] <arko> agreed
[19:50] <arko> because it doesnt account for current or torque
[19:50] <eroomde> and it's not even dimensionally correct
[19:50] <arko> haha
[19:50] <eroomde> should be k/V is you're willing to overlook the crime of 'k' being rpm
[19:50] <LeoBodnar> It's Kv actually
[19:50] <eroomde> if you're*
[19:50] <LeoBodnar> there is Ke as well
[19:51] <amell> Babs: did you look at BruGri ESC firmware?
[19:51] <arko> i think rc hobby cant handle fractions
[19:51] <adamgreig> K_v
[19:51] <eroomde> it's all just so hateful
[19:51] <LeoBodnar> and they are both legitimate values
[19:51] <eroomde> it needs to die
[19:51] <adamgreig> the 'voltage constant'
[19:51] <adamgreig> lol
[19:51] <arko> haha
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[19:51] <LeoBodnar> It's back-EMF constant
[19:51] <LeoBodnar> and Ke is torque constant
[19:52] <LeoBodnar> but people who quote them usually don't know what EMF or torque are
[19:52] <LeoBodnar> or dear
[19:52] <LeoBodnar> don't even get me started on torque
[19:52] <Babs> woah, I'm back. had dinner on the table.
[19:52] <Babs> hey arko - yes, forward and back
[19:52] <arko> same people who multiply vectors and scalars
[19:52] <arko> LeoBodnar: ^ :P
[19:52] <LeoBodnar> yeah
[19:52] <Babs> oh, and arko, you are ob wan kenobi to my princess leia on my backup cameras
[19:52] <arko> Babs: ahh right, then you will need a proper esc controller
[19:52] <LeoBodnar> i won't be moved
[19:53] <Babs> you mean my $10 ebay job won't be up to it?
[19:53] <eroomde> i multiply vectors qith scalars all the time...
[19:53] <Babs> ;-)
[19:53] <arko> haha
[19:53] <Babs> so, anyway, I reckon i will be able to get it pointy pointy in the right direction
[19:53] <Babs> well, a direction anyway
[19:53] <eroomde> one direction
[19:54] <Babs> but with compass drift and the change in the mag field
[19:54] <amell> If this is brushless motors, you will need custom ESC.
[19:54] <Babs> eroomde, this is not a Harry Styles channel
[19:54] <eroomde> anyhoo bbl
[19:54] <arko> eroomde: shit
[19:54] <arko> i meant add
[19:54] <adamgreig> why?
[19:54] <Babs> but, if there is drift, then i could have a very accurate point, but just at the wrong place
[19:54] <adamgreig> just normal rc escs should be ok enough Babs?
[19:54] <arko> >_> i gotta think before i type
[19:54] <adamgreig> like you have two motors going 'forward'
[19:54] <adamgreig> just forward is the opposite for each
[19:54] <adamgreig> so no trouble with the ESCs
[19:55] <adamgreig> you have feedback loops so it's not like the ESCs need to be super duper speed accurate?
[19:55] <Babs> so i reckon your camera thang one on each face of the structure might be a nice back up for me
[19:55] <arko> :)
[19:55] <adamgreig> amell: what do you mean, custom ESC?
[19:55] <amell> I thought babs wanted the motor to go back and forth
[19:55] <arko> i need to get it working though
[19:55] <adamgreig> as in, one designed to drive brushless motors?
[19:55] <arko> Babs: probably gonna get around to programming/finishing it up this week
[19:55] <Babs> adamgreig - the two motors have an equal and opposite reaction against each other
[19:55] <arko> i just havent had time to finish it up
[19:55] <adamgreig> Babs: right, but you never need to change direction on either wheel?
[19:55] <Babs> so pushing one fast and the other slow should exert a torque
[19:55] <Babs> no
[19:56] <adamgreig> yea. it's a nice design
[19:56] <adamgreig> doesn't need any clever ESCs
[19:56] <adamgreig> or worries about reversing motors
[19:56] <Babs> downside is that the effective slowest speed is dead torque, as both motors oerate at that speed
[19:56] <Babs> i couldn't design a clever esc so it was more a necessity than anything clever
[19:56] <Babs> don't tell anyone. i prefer clever
[19:57] <amell> the code on this link will flash into a normal ESC and allow you to use it as brushless gimbal driver http://fpv-community.de/archive/index.php/t-24033.html
[20:00] <mclane_> PYSY can be deleted from spacenear
[20:02] <daveake> done
[20:05] <Babs> amell - I need more revs for the reaction wheel
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[20:05] <Babs> i have an alexmos board for the brushless gimbal bit here https://www.flickr.com/photos/91049302@N00/13887860091/
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[20:25] <mikestir> contestia decoder needs afc
[20:26] <mattbrejza> is rxid supposed to turn itself off as it feels like it?
[20:26] <Geoff-G8DHE-M> Use RSID /RxID to align frequency
[20:26] <mikestir> it's the drift during tx that's the problem
[20:26] <Geoff-G8DHE-M> Its a setting to turn off after receipt untick the option
[20:26] <mikestir> it needs to track after the rsid
[20:26] <mattbrejza> oh yes just found that
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[20:33] <json34> Is anyone using si44xx for aprs?
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[20:38] <Ugi> HI Guys - what type of transmission is B-47 using?
[20:38] <DL7AD> Ugi: contestia 8/250
[20:40] <json34> Hi dl7ad
[20:40] <LeoBodnar> it's close to -50C so tcxo can't cope with that
[20:40] <Ugi> OK - not even heard of that! Google suggests an 8-tone encoding. Is that on 70cm or elsewhere?
[20:40] <LeoBodnar> should have used faster mode perhaps
[20:41] <DL7AD> Ugi: its transmitting at 434.500Mhz USB
[20:41] <DL7AD> Ugi: and you can use dl-fldigi for decoding
[20:41] <json34> Leobodnar,where can i buy the lipo you are using?
[20:42] <DL7AD> Ugi: http://ukhas.org.uk/projects:dl-fldigi
[20:42] <Ugi> thanks DL7AD - I might give it a go.
[20:42] <DL7AD> do you have a suitable receiver for 70cm ssb?
[20:42] <DL7AD> @Ugi
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[20:43] <Ugi> Only a dongle but might cope.
[20:43] <DL7AD> okay. then tell me when you finished the installation.
[20:43] <json34> Can i use dl-fldigi with a raspy-pi?
[20:44] <DL7AD> yes
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[20:44] <LeoBodnar> you can't json34
[20:44] <LeoBodnar> it's custom batch
[20:45] <DL7AD> but you can do your own build
[20:45] <LeoBodnar> but you might be able to talk Chinese into making another one
[20:45] <json34> Can you helpme?
[20:45] <LeoBodnar> how?
[20:46] <DL7AD> isnt there the source code available?
[20:46] <json34> Can send me the chinese contact?
[20:47] <LeoBodnar> I have done this through a UK company that has manufacturing in China, i'll ask them if i can pass on their details
[20:48] <json34> Dl7ad,is anywhere any tutorial dl-fldigi under raspy?
[20:48] <DL7AD> nope. nothing that i know json34
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[20:49] <Ugi> DL7AD - I don't see anytihng in the waterfall at 434.500 - is this one of those modes that works below the noise floor?
[20:50] <LeoBodnar> you can just try any good Chinese manufacturer
[20:50] <DL7AD> Ugi: yes
[20:50] <json34> Leobodnar,could you send me the contact?
[20:50] <LeoBodnar> they should be able to make cold LiPos
[20:50] <DL7AD> Ugi: did you activate RxID?
[20:50] <LeoBodnar> how many do you need?
[20:50] <LeoBodnar> MOQ is usually 500-1000
[20:52] <json34> Cold lipo?
[20:52] <DL7AD> Ugi: scroll down to RxID http://ukhas.org.uk/guides:tracking_guide
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[20:54] <mattbrejza> do they do relevent safety testing/certification etc?
[20:54] <SpeedEvil> mattbrejza: they send them in an envelope
[20:54] <LeoBodnar> http://www.fentbattery.com/en/products.asp?id=108 etc
[20:55] <malgar> i have a question abput the ground plane of payload antenna. Please take a look at this whiteboard: http://www.twiddla.com/1598973
[20:55] <aadamson> I'm pretty sure, but not 100% that the lipo that LeoBodnar uses is on ebay, search for 3.7v lipo or 1S lipo, there was a few in packs of 10 a while back, that looked pretty similar
[20:55] <json34> Leobodnar,any cold lipo will work?
[20:55] <LeoBodnar> i don't know :D
[20:56] <LeoBodnar> try it
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[20:57] <aadamson> json34, e.g. - http://www.ebay.com/itm/10x-3-7V-200mAh-402030-lipo-Battery-power-For-Mp3-GPS-bluetooth-headset-video-PC-/181361828168?pt=US_Cell_Phone_PDA_Cases&hash=item2a3a01e148
[20:57] <Lunar_Lander> I had a lipoly at -20°C for 48 h and the voltage did not drop
[20:57] <Babs> Wheel balancing process using my iphone https://www.flickr.com/photos/91049302@N00/14059543313/in/set-72157636929911016/
[20:57] <Lunar_Lander> but that was a battery lying in the freezer without loading
[20:57] <aadamson> they are all over the map is size shape and temperature
[20:58] <Upu> malgar all radials are 164mm
[20:58] <Babs> thought this sine wave was pretty cool https://www.flickr.com/photos/91049302@N00/14016497206/in/set-72157636929911016/
[20:58] <json34> Thanks leo
[20:58] <Upu> malgar http://ukhas.org.uk/guides:payloadantenna?s[]=payload&s[]=antenna
[20:58] <malgar> Upu: that's right.. but the question is AB or AC?
[20:58] <Babs> nicely balanced https://www.flickr.com/photos/91049302@N00/14036326492/in/set-72157636929911016/
[20:58] <json34> I will try
[20:58] <SpeedEvil> http://www.powerstream.com/thin-lithium-ion.htm specs discharge to -20C
[20:58] <malgar> Upu: I used that guide
[20:58] <Upu> don't worry abhout it :)
[20:58] <malgar> but it changes by 2-3mm
[20:59] <Upu> as long as the driven element is 164mm long
[20:59] <Upu> the radials don't have to be totally accurate
[20:59] <malgar> mmhf
[20:59] <malgar> ok
[20:59] <Upu> its 164mm from where the ground plane starts which is probably the coax braid
[21:00] <malgar> ook
[21:00] <Upu> well C I guess
[21:00] <malgar> now i CUT :P
[21:00] <malgar> oooookk
[21:00] <Upu> but don't stress to much over it
[21:00] <malgar> ok
[21:01] <mattbrejza> we have SWR metered antennas before
[21:01] <SpeedEvil> And anyway - 1/2 power loss means 30% distance loss
[21:01] <mattbrejza> wasnt worth the effort
[21:01] <malgar> Upu: your ntx2b should be 434.325 but gqrx says 434.299. why? is gqrx wrong?
[21:02] <jcoxon> malgar, the dongles are often a little bit off
[21:02] <Upu> are you using an RTL dongle ?
[21:02] <malgar> Upu: yes
[21:02] <Upu> it will be out
[21:02] <jcoxon> also the way you modulate the ntx2b means that it'll be slightly off freq as well
[21:02] <Upu> I'd trust the NTX2B over an RTL any day
[21:02] <daveake> The SDR s/w should have a calibration factor you can adjust to correct it
[21:02] <Upu> you can fix that by changing shift in SDRSharp or whatever you use
[21:03] <malgar> so when I'll declare to the world about my frequency should I say 434.325? the one written on the module?
[21:03] <json34> B-47 is using aprs?
[21:03] <malgar> daveake: I'll take a look
[21:03] <mattbrejza> yep malgar
[21:03] <Upu> I would yes
[21:03] <DL7AD> json34: hm... i think it does
[21:03] <Upu> though
[21:03] <LeoBodnar> what now?
[21:03] <Upu> with nothing plugged into to TXD
[21:03] <Upu> turn it on
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[21:04] <Upu> and note where it appears on your waterfall that should be 434.325 so offset or shift the frequency (don't know how to do it in your s/w)
[21:04] <json34> Will it work over frances?
[21:04] <LeoBodnar> no
[21:04] <DL7AD> json34: no its not allowed
[21:04] <json34> Uk?
[21:04] <DL7AD> json34: no
[21:04] <json34> Why?
[21:04] <DL7AD> json34: it will over the channel
[21:04] <DL7AD> not allowed
[21:04] <nats`> DL7AD I would love someone to clarify that officially it's not but many official organisation launch aprs balloon over france....
[21:05] <Upu> well its dubious over France
[21:05] <Upu> I think its technically not permitted but well into the "no one cares if you do" territory
[21:05] <daveake> So long as you don't have it use repeaters ...
[21:05] <json34> Dl7ad, your next launch?
[21:05] <eroomde> air-bof operation
[21:06] <daveake> ... then you'll get lynched
[21:06] <DL7AD> DL7AD: my next launch will be in may
[21:06] <json34> Are you using 144mhz?
[21:07] <DL7AD> json34: ehm. yes.... but 70cm too
[21:08] <json34> Leo,you are not using over france or they are blocking you?
[21:09] <json34> Dl7ad,can i send you an email?
[21:09] <Upu> json34 its turned off
[21:09] <DL7AD> sure
[21:10] <Upu> it knows where it is and geofences to comply with the local laws
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[21:15] <LeoBodnar> as Upu said
[21:15] <LeoBodnar> he pioneered it
[21:15] <Upu> well
[21:15] <LeoBodnar> don't
[21:15] <Upu> lol
[21:19] <Jed_edu> upu pm
[21:19] Nick change: will -> WillTablet
[21:20] Nick change: WillTablet -> Will
[21:20] Nick change: Will -> WillTablet
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[21:21] <WillTablet> Surely geofencing is a pain to code
[21:22] <WillTablet> So many borders
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[21:24] <WillTablet> #yolamos
[21:52] <fsphil> Leo's ninja-squirrels have competition: assassin-squirrels: https://twitter.com/SimonNRicketts/status/460507322263937027/photo/1
[21:53] <arko> fsphil: https://twitter.com/majornelson/status/460129185277968385
[21:53] <arko> you see this?
[21:54] <fsphil> yes!
[21:54] <arko> bladflasdifja;eifjoi
[21:54] <fsphil> I remember hearing about that story years ago
[21:54] <arko> i always thought it was a joke, but it makes sense
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[21:54] <arko> if your game is tanking so bad, its possible that it's cheaper to just dump it
[21:54] <arko> literally
[21:54] <fsphil> I wonder if the people putting all this effort into finding have actually played it
[21:54] <arko> than shelf and hope
[21:55] <arko> hahaha
[21:55] <arko> dude, i had this game, it was so bad
[21:55] <arko> soooo bad
[21:57] <fsphil> wonder if they're in good enough condition to work
[21:57] <fsphil> wait, B-47?
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[21:59] <cm13g09> fsphil: is Leo flying again?
[21:59] <fsphil> looks like!
[22:00] <fsphil> 9433m float, pretty high up
[22:00] <cm13g09> sigh!
[22:00] <malgar> payload antenna connected and working
[22:00] <malgar> another step toward the stratosphere :)
[22:00] <fsphil> should be just on the edge of range here
[22:01] <mikestir> it does appear to have realised it was about to peek over your horizon, so it's turned south a bit
[22:01] <fsphil> lol yep
[22:01] <fsphil> moving away
[22:02] <LeoBodnar> are you transmitting fsphil ?
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[22:02] <fsphil> nope
[22:02] <LeoBodnar> something is pushing it away
[22:02] <fsphil> it's the B-repellant field
[22:02] <LeoBodnar> you must be + B-charged
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[22:02] <LeoBodnar> still
[22:03] <LeoBodnar> after B-46 encounter
[22:03] <DL7AD> arko?
[22:03] <fsphil> yea just give it time :)
[22:03] <arko> ?
[22:03] <DL7AD> arko: https://www.dropbox.com/s/rrxo8ywsg2fvk6j/IMG_20140427_133942.jpg
[22:03] <fsphil> lol
[22:04] <DL7AD> :D
[22:04] <arko> oh yeah!
[22:04] <arko> my gf brough back arko chocolates from germany last year
[22:04] <DL7AD> arko: train station berlin hauptbahnhof
[22:04] <arko> they had booze in them i think
[22:04] <arko> totally the kind of chocolate i would make
[22:05] <arko> https://twitter.com/joerghuettmann/status/315755101744668673
[22:05] <arko> haha people love me!
[22:06] <DL7AD> this has been the fly woke me up yesterday. i recently found it when i came home: https://www.dropbox.com/s/fflfuh21734ow33/IMG_20140427_150143.jpg
[22:06] <DL7AD> as i said. has been.... https://www.dropbox.com/s/g4smsai9ki4iaxh/IMG_20140427_150216.jpg?m=
[22:07] <DL7AD> summer is coming...
[22:07] <fsphil> there is a freakishly big spider on the bin outside
[22:08] <mikestir> we cleared the shed out earlier - it was grim. everything was covered in massive spiders and slugs
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[22:09] <arko> i saw so many weird insects yesterday as we were pulling things out of the storage
[22:09] <arko> one of them had crawlled into the pallet plastic warp and died
[22:09] <fsphil> nullspace is bugged
[22:10] <arko> :O!!!!
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[22:13] <Lunar_Lander> DL7AD, XD!
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[22:13] <Lunar_Lander> http://news.xbox.com/2014/04/ent-atari-dig
[22:14] <DL7AD> Lunar_Lander: :P just saw it, ran in, boom :D
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[22:14] <Lunar_Lander> xD!
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[22:46] <Laurenceb_> ooh B-47
[22:49] <Laurenceb_> wait
[22:49] <Laurenceb_> how did it get so high?!
[22:50] <mattbrejza> might not end well when the sun gets to it?
[22:50] <WillTablet> Laurenceb_: 420, obviously
[22:50] <Laurenceb_> something has changed :D
[22:50] <Laurenceb_> hydrogen fill?
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[23:09] <esculca> hey DL7AD
[23:09] <esculca> esculca in here
[23:09] <esculca> I installed Multipsk
[23:10] <esculca> ans now i am able to decode APRS transmissions from around here
[23:10] <esculca> none mine though:P
[23:10] <DL7AD> did you get my link?
[23:10] <esculca> but that is for sure my fault
[23:10] <esculca> I did, thanks
[23:10] <esculca> I will dig into this a little more
[23:10] <f5vmh> hsven
[23:10] <f5vmh> hi ven
[23:11] <f5vmh> HI Sven
[23:11] <f5vmh> I have started again my equipp
[23:11] <DL7AD> hi f5vmh
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[23:12] <f5vmh> what frecv for B47
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[23:13] <DL7AD> it did not reach france yet teodor f5vmh
[23:13] <DL7AD> f5vmh: http://spacenear.us/tracker/?filter=B-47
[23:14] <DL7AD> i think you can try tomorrow
[23:14] <DL7AD> *today ^^
[23:14] <f5vmh> OK tnx
[23:14] <DL7AD> but a bit later
[23:14] <f5vmh> I will let working the equippement
[23:14] <f5vmh> Good Night
[23:15] <DL7AD> wait
[23:15] <DL7AD> f5vmh:
[23:15] <DL7AD> did you activate rxid?
[23:15] <f5vmh> ok
[23:15] <DL7AD> have a look in the upper right corner of dlfldigi
[23:15] <DL7AD> theres a checkbox named rxid
[23:16] <amell> oh gosh, B-47
[23:16] <f5vmh> yes it is active
[23:16] <DL7AD> yep
[23:16] <DL7AD> c0ool
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[23:16] <amell> I think they are all sitting in a box and he just lets one off when he feels like it
[23:16] <DL7AD> rxid will find the signal out of the waterfall teodor
[23:16] <f5vmh> ok
[23:16] <DL7AD> so everything works automatically
[23:17] <f5vmh> ok
[23:17] <f5vmh> GN
[23:17] <DL7AD> gn
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[23:17] <amell> DL7AD: how does rxid do that?
[23:18] <DL7AD> the ballloon has a pretransmission
[23:18] <DL7AD> which will indicate the mode
[23:18] <DL7AD> and dlfldigi can indicate this automatically
[23:18] <amell> when you said waterfall, does it need to be tuned?
[23:19] <DL7AD> yess but just to 434.500
[23:19] <amell> will find the signal out of the waterfall
[23:19] <DL7AD> yes it does
[23:19] <amell> Didnt know that was possible. Great, do all payloads do this?
[23:19] <DL7AD> rxid indicates where the signal in the waterfall actually is
[23:19] <DL7AD> no
[23:19] <DL7AD> just leos currently
[23:20] <amell> this pretransmission - how does fldigi find it?
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[23:21] <DL7AD> amell: no idea how its working exactly
[23:21] <amell> DL7AD: id be astonished if it can actually find a signal in the waterfall
[23:22] <amell> Do you mean it automatically sets the decoding mode
[23:22] <DL7AD> yes just everything
[23:23] <DL7AD> mode,, speed of the mode and exact decoding location
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[23:24] <amell> http://ukamsat.files.wordpress.com/2014/04/typical-434-mhz-solar-powered-payload-credit-leo-bodnar-m0xer.jpg
[23:24] <amell> holy crap that is frigging tiny
[23:30] <WillTablet> If it is possible to output serial from a phone using a USB to serial cable, then why don't we stick them in payloads and connect them to ntx2s. I mean, they have a camera, GPS etc
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[23:44] <LeoBodnar> Curing large frequency drift when in Contestia mode: Right-click on "CTSTIA 8/250" at bottom left corner, set Receive synchronizer to 16
[23:45] Laurenceb_ (~Laurence@host86-171-4-103.range86-171.btcentralplus.com) left irc: Ping timeout: 252 seconds
[00:00] --- Mon Apr 28 2014