highaltitude.log.20141003

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[04:28] <SpacenearUS> New position from 03EDUPIC4 after 036 hours silence - 12http://habhub.org/mt/?focus=EDUPIC4
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[05:33] <Haxxa> These are L91's Correct? - https://www.jbhifi.com.au/tv-home-entertainment/audio-accessories/energizer/energizer-lithium-aa-batteries-4-pack/29087/
[05:34] <Haxxa> Right?
[05:34] <Haxxa> Model: L91BP4T
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[05:36] <Haxxa> I am going with it...
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[06:13] <craag> Haxxa: Morning, yep those are the ones.
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[07:05] <pd3jag> good morning all
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[07:06] <pd3jag> is there something going in the air today hihi??
[07:07] <UpuWork> nothing planned
[07:07] <UpuWork> not that means much these days :)
[07:08] <pd3jag> okey tnx i seen something like edupic4 thats why i ask this hihi
[07:09] <UpuWork> could be
[07:09] <UpuWork> jededu may be able to say
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[07:11] <jededu> Its a bit breezy to launch it its a foil with very little lift
[07:11] <UpuWork> there you go pd3jag :)
[07:11] <jededu> Unless I go up the nearest hill
[07:11] <UpuWork> morning
[07:11] <jededu> Morning upu
[07:12] <pd3jag> oke , i hope to get follow something this weekend haha i like this so much to do .
[07:13] <jededu> Is there any reason why I cannot send an RTTY string twice with the same checksum
[07:14] <craag> jededu: Nope, although why not increment the string counter at least?
[07:14] <craag> (which would need a new checksum obv)
[07:15] <jededu> Yes :)
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[07:15] <craag> are you thinking about sending when you don't have a gps fix?
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[07:15] <pd3jag> i don't now jed sorry I must learn more about HAB just start with this hobby
[07:16] <jededu> No ts because Im sending a string every 60 secs and sending a duplicate
[07:16] <craag> Ah ok
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[07:29] <LeoBodnar> I have heard packet traffic on 144.390 on Cordoba globaltuners
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[07:38] <LeoBodnar> anybody with a APRS decoder? http://leobodnar.com/balloons/files/CORDOBA-144390.wav
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[07:44] <LeoBodnar> [ I ] [ APBL16( ][ A5TKR æxôôÝÊ8©¿÷gf\|9WO13Ýÿ¯Õ{VÔÕÏó`&±+!¢Yd´YjN
[07:44] <LeoBodnar> not Aether
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[07:44] <jededu> Why does fldigi come up with UnmergableError
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[07:50] <x-f> you probably sent the same string already
[07:52] <jededu> x-f I thought that may be it the first one parses then i get the error thanks
[07:54] <SA6BSS> LeoBodnar: https://dl.dropboxusercontent.com/u/26543754/aprs%20leo.JPG
[08:01] <SA6BSS> looks like you recorded aeth22-1
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[08:01] <LeoBodnar> ok wait
[08:06] Action: amell looks for edupic4...
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[08:09] <SA6BSS> leo, nice updated on aprs map :)
[08:12] <amell> Leobodnar: are you still hearing it?
[08:13] <LeoBodnar> yes
[08:13] <amell> any sign of -2?
[08:14] <LeoBodnar> could do with tracking the -1
[08:14] <LeoBodnar> sorry -3
[08:14] <LeoBodnar> should be over souther germany now
[08:15] <amell> is there a web based aprs decoder anywhere?
[08:16] <fsphil> not sure what use that would be
[08:16] <amell> to decode wav files that i might capture?
[08:16] <amell> oh hang on. i have pocketpacket installed somewhere.
[08:17] <SA6BSS> I´m in on cordoba, feeding the audio to decoder app
[08:17] <SpacenearUS> New position from 03SP after 0316 hours silence - 12http://habhub.org/mt/?focus=SP
[08:19] <SA6BSS> SP going up from Budapest right now
[08:19] <amell> now i have to wait for globaltuners account to be approved&
[08:20] <SA6BSS> heard that aprs transmition but did not get a decode
[08:21] <LeoBodnar> i did
[08:21] <SA6BSS> ok!
[08:21] <LeoBodnar> i am using multipsk
[08:21] <LeoBodnar> need to decontaminate myself after using
[08:21] <LeoBodnar> it
[08:22] <fsphil> your poor eyes
[08:22] <SA6BSS> hehe, its a messy program, but it does all modes avalible
[08:22] <fsphil> that's like self-harm
[08:29] <SpacenearUS> New vehicle on the map: 030x01 - 12http://habhub.org/mt/?focus=0x01
[08:30] <amell> i cant seem to get any sound out of globaltuners. is there some magic trick i need to use?
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[08:30] <fsphil> it's a bit hit and miss
[08:30] <LeoBodnar> did you press audio start button?
[08:31] <amell> aha..! now i am getting something :)
[08:32] <LeoBodnar> it seems to be transmitting every 4 minutes
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[08:32] <amell> let me know when the next packet comes
[08:32] <LeoBodnar> last one was just now
[08:32] <amell> hmm. didnt see it.
[08:33] <LeoBodnar> so expect next at about 09:36:30
[08:33] <LeoBodnar> maybe 20-30 sec earlier
[08:36] <amell> !flights
[08:36] <SpacenearUS> 03amell: Current flights: 03MRC launch 4 10(2a02), 030x01 - uTrak Pico Flight 10(4028)
[08:36] <amell> jededu: sounds like youre launching - flight doc not present?
[08:37] <fsphil> it's there, start time is tomorrow
[08:38] <amell> oh i missed the subject line of his email :)
[08:40] <dl3yc> start of 0x01
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[08:44] <jededu> amell its too windy here to launch today Im going for 7:30 tomorrow its on the mailing list
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[08:45] <craag> 300 baud intermittent is a brave one!
[08:45] <amell> thats me out
[08:46] <amell> too much noise for 300baud
[08:46] <fsphil> I hope the string is repeated
[08:46] <fsphil> or there is plenty of preamble
[08:46] <jededu> I know Ive had it runing all night I could change it amell what about 100
[08:46] <amell> not tried 100 before
[08:47] <amell> edupic3 i was able to receive out to 180km at 50
[08:47] <jededu> 1 second preamble string is repeated twice
[08:47] <fsphil> perfect
[08:48] <amell> why not tx 50, 100 and 300? :)
[08:48] <UpuWork> intermittant 300 baud ?
[08:48] <fsphil> :p
[08:48] <UpuWork> I'm out
[08:48] <amell> sounds like a lot of us might be out
[08:48] <jededu> Ok ill change it what about 100 upu
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[08:49] <amell> leobodnar: was that a tx just now?
[08:49] <mikestir> actually most of the interference I get is due to short bursts of ISM stuff, so faster might actually be better (less chance of being hit), but I agree that 300 baud is probably a bit brave
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[08:55] <jededu> So what is a the fastest baud rate for RTTY that can be reliably decoded
[08:56] <jededu> Ive never tried anything other than 50
[08:56] <craag> depends what distance you're after
[08:56] <craag> 1200 works fine up close :)
[08:56] <jededu> I see
[08:56] <craag> For a float I'd have thought 50 was near enough what you want with rtty
[08:57] <craag> contestia and the more complex modes can push a higher effective baudrate for the rx distance
[08:57] <mikestir> I don't know. I can see 100 being worth a try. The chance of getting corrupted by ism data in any single, typical length 50 baud packet is pretty high
[08:57] <craag> Yeah you might as well try 100
[08:58] <craag> If it doesn't work - use 50 next time :)
[08:58] <jededu> Ok 100 it is :)
[08:59] <mikestir> contestia and olivia can survive quite severe bursts of interference even with quite weak sigs
[08:59] <mikestir> definitely worth trying to get that working
[08:59] <amell> contesia is awesoem
[08:59] <amell> and my spelling is not so awesome
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[09:01] <jededu> Need to have a look at contestia I wouldnt know where to start at the moment
[09:04] <LeoBodnar> DimonoEX is a good inbetween solution
[09:05] <LeoBodnar> and it sounds nostalgic
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[09:07] <jededu> LoeBodnar that might be doable :)
[09:08] <craag> Anthony has some example code for domex
[09:08] <jededu> In Basic ? :)
[09:08] <craag> lol no
[09:08] <craag> but you can see how it works and then.. errr.. backport it
[09:09] <jededu> I get that response all the time :)
[09:10] <jededu> Makes it interesting obvoiusly you cant copy and paste
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[09:14] <DL3YC_> hi thoren
[09:14] <DL3YC_> hi thasti
[09:14] <thasti> hi DL3YC
[09:18] Nick change: dl3yc -> DG0MG
[09:23] <edmoore> today is the anniversary of the first man0made object to enter space
[09:31] <edmoore> foodie-winey rap band name suggestion: premier crew
[09:35] <thoren> hallo DL3YC
[09:36] <mfa298> jededu: domino is pretty easy to impliment. The bits that make it more tricky are the need for accurate frequency steps and accurate timing.
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[09:42] <PFY_> I'm just bench testing the RF side of things. I can see the two peaks on SDR#. I've send Audio Output to be the Virtual cable (using VB-CABLE Driver). I can hear the transmissions on my PC speakers. I've got DL-Fldigi up and running and I've set Sound Card Capture to the virtual audio cable. On DL-Fldigi I can see an effect on the waterfall every time there's a transmission, but the 'waterfall' doesn't match SDR#....it's not d
[09:43] <mclane_> someone listening to 0x01? what the hell do they use as transmitter??
[09:43] <edmoore> PFY_, it's not what?
[09:44] <craag> PFY_: screenshot?
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[09:45] <PFY_> ok, let me figure out where to put it on the net.
[09:45] <PFY_> edmoore: DL-FLdigi doesn't seem to be decoding the data, or perhaps the virtual cable isn't set up properly
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[09:46] <craag> PFY_: imgur.com
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[09:47] <PFY_> craag: cheers, I'll be a few minutes (I'm at work) :-/
[09:48] <PFY_> craag: http://imgur.com/AM1RtRd
[09:48] <edmoore> PFY_, does dlfldigi show two peaks?
[09:49] <edmoore> that looks like it's getting something in the middle there
[09:49] <PFY_> yeah, some energy there
[09:49] <edmoore> is it just that what it's decoding is wrong>
[09:49] <edmoore> ?*
[09:49] <PFY_> I'm guessing it's likely to be my set-up, but can't figure out what
[09:50] <craag> PFY_: What baudrate are you using?
[09:50] <edmoore> try it again but in the bottom right corner uncheck SQL
[09:50] <craag> Your filters look way too narrow
[09:50] <edmoore> and then if that doesn't work hit 'Rv' which is just up and to the left of sql
[09:51] <PFY_> craag: ah, should it be 300 baud? FL-Digi set to 50 atm, by the looks of things
[09:51] <craag> PFY_: If that's what you're transmitting - dlfldigi needs to match
[09:52] <craag> Also tick 'Auto' on the filter width slider at the bottom of the RTTY settings window
[09:52] <craag> (or drag it over to 300 or so)
[09:52] <PFY_> craag: just checked with the coder, he says 300
[09:53] <PFY_> edmoore: I've un-checked SQL, still no joy (and clicked RV
[09:53] <craag> PFY_: Right-click 'RTTY' in bottom left
[09:53] <craag> Then set baudrate to 300
[09:53] <craag> and slider at the bottom to 300
[09:54] <craag> That'll set you up for 300 baud :)
[09:54] <PFY_> ok, baud set to 300
[09:54] <PFY_> still not decoding
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[09:55] <craag> If that doesn't work, check if he's using 7 or 8 bit characters, and set the box in the that window accordingly
[09:55] <craag> Also try the Rv again
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[10:00] <PFY_> craag: he thinks it's 8, but not sure, he'll have a look in a bit (I have tried 8, but it still isn't decoding). He's also not sure how many stop bots (he believes 2) have tried that also. Since setting baud rate to 300 I'm 'decoding' a lot of noise! :)
[10:01] <craag> :/
[10:01] <craag> If you post up an audio recording someone might have a go at working it out (I can't right now)
[10:02] <PFY_> craag: no worries, thanks to you and edmoore for your help :)
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[10:04] <mclane_> ping DL3YC
[10:04] <mclane_> ping DL3YC_
[10:10] <DL3YC_> hi
[10:10] <DL3YC_> mclane_:
[10:11] <mclane_> Hi, weisst Du was die Leute vom 0x01 als Sender benutzen? sieht nach RFM22 aus?
[10:12] <DL3YC_> si4060
[10:12] <DL3YC_> ich habe ih gestartet
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[10:13] <mclane_> warum driftet er so schrecklich?
[10:14] <mclane_> (plane auch ein 4060 bsierdes design)
[10:15] <mclane_> basiertes
[10:15] <DL3YC_> documentation of 0x01: https://github.com/thasti/utrak
[10:17] <SpacenearUS> New vehicle on the map: 03HA7WEN_chase - 12http://habhub.org/mt/?focus=HA7WEN_chase
[10:18] <DL3YC_> not documentation, this is the repository
[10:19] <DL3YC_> this is the docu: http://dooce.de/dokuwiki/doku.php?id=projekte:utrak:start
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[10:20] <DL3YC_> mclane_: thasti builds the 0x01
[10:23] <mclane_> danke, werde ich mir mal ansehen
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[11:38] <PFY_> edmoore and craag: Thanks again for your help. Changed the code to 7 bit characters with 2 stop bits (and the configuration in fldigi)........it's now successfully decoding. :)
[11:39] <craag> woo :)
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[11:45] <gonzo_> the stop bit setting in the RX is prob not critical, as long as it is no gretaer than the tx setting
[11:46] <Haxxa> I don't understand I have connected my multimeter in series between my 5v device and 5v arduino pin yet it shows 0ma on multimeter any ideas?
[11:47] <edmoore> how many banana sockets on your meter?
[11:47] <edmoore> i'm guessing 3
[11:47] <edmoore> check you are using the correct 2
[11:47] <edmoore> is the arduino circuit powering up?
[11:49] <Haxxa> yes correct two and ardino powering up
[11:49] <Haxxa> so circuit is closed
[11:50] <edmoore> definitely the right current mode?
[11:50] <edmoore> not accidently in amps or something (sorry if this is all obvious, just trying to be methodical)
[11:50] <Haxxa> yer start high move lower a 200ma only testing sdcard current
[11:50] <Haxxa> multimeter is on 200ma dial
[11:51] <edmoore> if you replace the circuit with a resistor to get, say, 10mA, does that show up?
[11:51] <Haxxa> multimeter between vcc and 3.3v pin on sdcard
[11:51] <edmoore> this will sanity check the meter
[11:52] <edmoore> oh, so it's only looking at the current of the sd card?
[11:52] <Haxxa> yes
[11:52] <edmoore> if the sd card is idle it might be drawing too little current to register on a 200mA range
[11:52] <edmoore> i need to go but i'll be back in about 15 mins
[11:52] <edmoore> apologies
[11:53] <Haxxa> np
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[12:01] <edmoore> back Haxxa
[12:01] <Haxxa> cool now my reader isn't working sorry brb
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[12:13] <Lunar_Lander> hello
[12:14] <Haxxa> edmoore I don't trust my multimeter my sdcard is now broken
[12:14] <edmoore> nice
[12:14] <edmoore> electronics huh
[12:15] <Haxxa> I have a turnigy 870e $9
[12:15] <Haxxa> I think it broke it
[12:19] <Haxxa> edmoore my positive probe should be on 3.3v (vcc) right and negative on 3.3v pin on sdcard
[12:20] <Haxxa> in series
[12:22] <edmoore> yes
[12:22] <edmoore> in ammeter mode
[12:22] <edmoore> yep
[12:22] <edmoore> though recall the thing i mentioned about burden voltage
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[12:23] <edmoore> there might be a drop across the ammaeter that means the sd card Vin is seeing too low a voltage
[12:23] <edmoore> here is where the second multimeter would be useful :)
[12:25] <SpeedEvil> The millivolt range, with an external shunt is good too
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[12:26] <SpeedEvil> Find a resistor or length of wire that does 20mV or so at your desired maximum current
[12:26] <SpeedEvil> Also be aware that cheap DMMs basically make numbers up if not presented with slowly changing DC
[12:26] <SpeedEvil> or 50/60Hz AC)
[12:27] <SpeedEvil> A simple way round this can be to use the above mentioned shunt, and a large RC filter across it to highpass the signal.
[12:27] <SpeedEvil> ^low
[12:27] <Haxxa> well I am getting 0 on multimeter and sd card is working - just tested zero - so how can I test if SDcard is working?
[12:28] <Haxxa> ops multimetere
[12:28] <Haxxa> not sdcard
[12:28] <Haxxa> I think multimeter is measuring properly
[12:28] <edmoore> to test the sd card you could write some code
[12:29] <edmoore> write a value to the card
[12:29] <edmoore> then read it back
[12:29] <edmoore> see if it's right
[12:29] <Haxxa> nah sdcard is working
[12:29] <Haxxa> sd reader too
[12:29] <edmoore> ok
[12:29] <Haxxa> mltimeter is showing zero though
[12:29] <edmoore> could you possibly take a photo of your setup?
[12:29] <edmoore> including the circuit under test, the power supply, and the multimeter
[12:30] <SpeedEvil> showing zero on what range?
[12:30] <SpeedEvil> And are you sure you have the wires in the right holes
[12:30] <Haxxa> on multimeter though all amp dials
[12:30] <Haxxa> yes
[12:30] <Haxxa> banaplugs in in right whole
[12:30] <Haxxa> com and 200ma fused
[12:31] <SpeedEvil> you have broken the circuit, so the current can only go through the multimeter?
[12:31] <Haxxa> no
[12:32] <Haxxa> the sdacrd is working when multimeter is in circuit
[12:32] <Haxxa> the circuit is closed thus fuse is not broken
[12:32] <Haxxa> the value on the multimeter is 0 however
[12:34] <edmoore> if there's any chance of that photo as described above we can probably get rid of all the obvious questions ourselves without having to ask
[12:35] <Haxxa> i am taking it
[12:36] <edmoore> ta
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[12:42] <Haxxa> http://imgur.com/gtotOo9
[12:42] <Haxxa> edmoore ^
[12:42] <Haxxa> Seem right?
[12:42] <craag> I think he wanted more of the circuit in the photo
[12:43] <Haxxa> I know but I want to know if multimeter is correct first
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[12:43] <craag> it is, but that's the easiest bit :P
[12:43] <edmoore> pixels are cheap enough nowadays to do everything at once :)
[12:43] <edmoore> that looks ok
[12:43] <mattbrejza> if thats always read 0mA you might have just blown its fuse
[12:43] <edmoore> what happens when you run the dial down to 2mA?
[12:43] <edmoore> mattbrejza, it's conducting
[12:43] <edmoore> to his circuit
[12:43] <edmoore> so fuse works presumably
[12:43] <mattbrejza> oh yea
[12:44] <edmoore> either that or someone replaced it with an m4 bolt
[12:44] <Haxxa> actually is there anyway I can test seperate circuit with multimeter
[12:44] <edmoore> Haxxa, try turning the dial down to lower ranges to see if you get current appearing
[12:44] <edmoore> 20ma, 2ma etc
[12:44] <Haxxa> I tried all ranges
[12:44] <Haxxa> nope
[12:45] <edmoore> yes ok test a separate circuit
[12:45] <edmoore> try and make 10mA
[12:45] <edmoore> or so
[12:45] <edmoore> stick the multimeter in series with your power supply and an appropriately sized resistor
[12:45] <daveake> Is the card actually being accessed? It'll draw almost no current till it is
[12:45] <Haxxa> I'll just put a 10 resistor between 5v and gnd
[12:46] <Haxxa> daveake yes
[12:46] <Haxxa> and when it is no change
[12:46] <Haxxa> which is why I think multimeter is broke
[12:46] <edmoore> Haxxa, 10 ohms?
[12:46] <Haxxa> 10k
[12:46] <edmoore> if so, stop now
[12:46] <edmoore> before you melt yourself
[12:46] <edmoore> 10k is a bit low
[12:46] <daveake> Even then, unless you're writing to it all the time, the average current (which is the best the meter will manage to show) will be low
[12:47] <edmoore> i'd size it such then you get some definitely good current
[12:47] <edmoore> like 10mA
[12:47] <edmoore> 500-ohms-ish
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[12:48] <SpeedEvil> I've seen meters break on te current range - following an oops
[12:49] <SpeedEvil> I don't know what causes it
[12:49] <Haxxa> edmoore seeing no change with 500ohms between 5v and gnd
[12:49] <SpeedEvil> Haxxa: your meter is broken somehow
[12:49] <edmoore> so your setup is 5V----multimeter----500ogms-----GND?
[12:49] <Haxxa> yes
[12:49] <edmoore> yes
[12:49] <edmoore> what SpeedEvil said
[12:50] <SpeedEvil> Haxxa: it works fine on voltage?
[12:50] <Haxxa> yes
[12:50] <SpeedEvil> If you have a one ohm or so resistor - put it on the 200mV range, and then that will measure 200mA
[12:50] <gonzo_> blown fuse on the mA range?
[12:51] <SpeedEvil> gonzo_: the fuse isn't blown - as it's conducting apparantly
[12:51] <Haxxa> yer
[12:51] <Haxxa> measuring resistance fine too
[12:52] <SpeedEvil> Return your meter for warranty service.
[12:52] <SpeedEvil> :)
[12:52] <edmoore> http://www.extech.com/instruments/product.asp?prodid=277
[12:52] <edmoore> that won the eevblog low price multimeter shootout
[12:52] <edmoore> if you don't want to jump straight to a fluke
[12:52] <edmoore> though i'm of the buy right, buy once camp
[12:52] <daveake> Except that for DMMs, many is good :)
[12:52] <craag> I've got a multimeter that I blew the fuse on, replaced it, it conducts, but doesn't show a reading.
[12:53] <craag> I suspect the ADC was overvolted
[12:53] <edmoore> yeah
[12:53] <edmoore> the fuse might have died after the rest of it was killed
[12:53] <edmoore> daveake, also true
[12:53] <gonzo_> I have loads of cheap maplin meters for not so critical work. When the batt dies/fuse blows. Just get the next one from the heap
[12:53] <daveake> I once refused to lend a meter to someone who wanted to test a car battery
[12:53] <daveake> on the 10A range
[12:53] <edmoore> lol
[12:54] <edmoore> my next will be a bench meter probably
[12:54] Action: SpeedEvil imagines a nice 8 foot long, 4 foot high meter, with nice sturdy legs.
[12:54] <daveake> I bought a "bench" meter on the basis that there was a fair chance it'd still be on my bench when I wanted it
[12:54] <edmoore> Haxxa, speedevil's other advice was good
[12:55] <edmoore> if you want
[12:55] <edmoore> you can measure current by measuring a voltage drop across a resistor
[12:55] <edmoore> so
[12:55] <edmoore> V = IR
[12:55] <craag> Mine still works for V/R, still carry it as it has a fast refresh rate compared to others I've tried.
[12:55] <gonzo_> every time I search on anything with 'bench' on ebay, it copmes up with underpants
[12:55] <Haxxa> my fuse is blown just did new test led did not light sdcard worked for some reason without 3.3v power
[12:55] <edmoore> so you could put something like a 1-ohm resistor between VCC and the sd card
[12:55] <edmoore> then measure the voltage drop across it
[12:55] <edmoore> 1mA = 1mV on the multimeter
[12:56] <edmoore> etc
[12:56] <edmoore> might get you out of a hole
[12:56] <Haxxa> are fuses normally inside the battery compartmetn I just confirm first
[12:57] <edmoore> no, often you have to take the whole rear off
[12:57] <MaXimaN> !flights
[12:57] <SpacenearUS> 03MaXimaN: Current flights: 03MRC launch 4 10(2a02), 030x01 - uTrak Pico Flight 10(4028), 03PS-22 434.650 OLIVIA 8/250 Enable RSID 10(2583)
[12:57] <edmoore> but that's usually quite easy
[12:57] <Haxxa> fair enough br
[12:57] <Haxxa> *brb
[12:58] <gonzo_> the old avo was good, as it was a front panel trip. And it had that chgaracteristioc, boigngngngng, designed so that otjhers around could come and take the piss.
[12:59] <craag> haha my dad has one of those massive analog scale ones
[12:59] <craag> he didn't like the sound of tripping the current limit as much as I did :)
[13:00] <daveake> :)
[13:00] <SpeedEvil> Oh.
[13:00] <SpeedEvil> Right - fun.
[13:01] <SpeedEvil> Other fun thing you need to know Haxxa about low powered stuff.
[13:01] <SpeedEvil> It will quite often run from data inputs that are 'high'.
[13:01] <SpeedEvil> Getting its power from those, due to internal protection diodes
[13:01] <edmoore> yeah i was thinking that
[13:02] <edmoore> that's why i was talking about ensuring any pullups and so on are on the other side of the fet switch
[13:02] <Haxxa> fuse is blown defiantly but there is only one fuse?
[13:02] <edmoore> really?
[13:02] <Haxxa> should there not be two
[13:02] <edmoore> should be 2
[13:02] <edmoore> 10A and 200mA
[13:02] <edmoore> as per the front panel
[13:02] <edmoore> the 200mA might not be an obviously fusey fuse
[13:02] <Haxxa> it seems to be missing?
[13:03] <edmoore> it might look more like another electronic component
[13:03] <craag> well that would explain it :P
[13:03] <Haxxa> unless its the big metal bar?
[13:03] <craag> (assuming there's an empty holder)
[13:03] <Haxxa> soldered
[13:03] <daveake> the big bar will be for the 10A range
[13:03] <edmoore> fancy taking a photo of it :)
[13:03] <Haxxa> ok
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[13:07] <Haxxa> uploading...
[13:08] <Haxxa> http://imgur.com/reUfbyD,qZzzvUw,yhg6dWs
[13:08] <Haxxa> edmoore ^
[13:10] <Haxxa> I the fuse below bar is defiantly poped
[13:10] <edmoore> ok
[13:10] <edmoore> so on the first pic
[13:10] <edmoore> see that green blob thing
[13:10] <edmoore> 2 legs, kinda spherical
[13:10] <edmoore> says PTC next to it
[13:10] <Haxxa> yep
[13:11] <edmoore> positive temperature coefficient
[13:11] <edmoore> or ;reseetable fuse' to you and me
[13:11] <Haxxa> ok
[13:11] <Haxxa> what about the bottom one
[13:11] <edmoore> i suspect that's the 200mA fuse bit
[13:11] <edmoore> that'll be the 10A one
[13:12] <edmoore> it's soldered in which is bad
[13:12] <Haxxa> you reckon thats 200ma
[13:12] <Haxxa> the broken pne
[13:12] <edmoore> the PTC
[13:12] <edmoore> possibly
[13:12] <Haxxa> *one
[13:12] <edmoore> well the PTC might be working
[13:12] <Haxxa> why would voltage still work
[13:12] <edmoore> but the current sensing bit after it might be broken
[13:12] <edmoore> voltage is a different thing
[13:13] <edmoore> totally separate circuity
[13:13] <edmoore> doesn't need a fuse as its own resistance is almost infinite
[13:13] <Haxxa> ok so replace ptc and bottom fuse?
[13:13] <edmoore> the fuse will *just* be protection for the current measurement circuitry
[13:13] <edmoore> no because the evidence suggests the ptc is working
[13:14] <edmoore> given you see it's not open-circuit
[13:14] <Haxxa> so just the small fuse that is visably broken
[13:14] <edmoore> yes
[13:14] <edmoore> that's probably the 10A one
[13:14] <edmoore> but that doesn't help you with this really
[13:14] <edmoore> too coarse
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[13:14] <Haxxa> wait so is small fuse at bottom not related to 200ma < monitoring only 10a
[13:15] <edmoore> i beleive so
[13:15] <edmoore> i don;t have the schematics infront of me or anything
[13:15] <edmoore> but they'll be separate circuits
[13:15] <edmoore> independant fuses
[13:15] <Haxxa> so why would 200ma not be working
[13:15] <gonzo_> many cheap maters have no fuse on the 10A ranbge. They usually only fuse the 200mA range, which is on the same input pins as the volts range
[13:15] <myself> The 10A current path isn't fused. The glass fuse is the voltage-input fuse, the 200ma. If it's blown, the voltage ranges won't work.
[13:15] Action: myself checks in
[13:16] <gonzo_> they usually have the 10A on separate input and hard wired shunt
[13:16] <myself> I've repaired a handful of very similar looking meters. The glass fuse here is the low-amp one.
[13:16] <Haxxa> ah
[13:16] <Haxxa> FOr all accounts it would seem logical
[13:16] <gonzo_> when maplin are doing 2x mewters for a fiver, buy a box and treat them as desposable
[13:16] <Haxxa> let me stick my meter into mains see if 10a works...
[13:16] <gonzo_> +i
[13:17] <edmoore> i defer to myself if he's worked with this kind of meter before
[13:17] <gonzo_> a very good way of disposing!
[13:17] <myself> nice knowing ya, haxxa :)
[13:17] <edmoore> i was beginning to wonder why that bar seemed to bypass the glass fuse
[13:17] <Haxxa> why?
[13:17] <edmoore> Haxxa, don't trust your safety to cheapo meters
[13:17] <myself> "let me stick my meter into mains" is one of those things I teach newbies to be leery of saying..
[13:18] <Haxxa> ok screw it then so no way to measure current
[13:18] <myself> The bar is the current shunt. It's slightly narrowed, or has a nick in it somewhere, to adjust its resistance.
[13:19] <Haxxa> edmoore I may go down mosfet way
[13:19] <edmoore> i'd get yourself a decent meter
[13:19] <edmoore> treat yourself
[13:19] <myself> What blew this one up? I missed the beginning.
[13:19] <edmoore> you're doing Real Work here so it's quite justifiable
[13:19] <edmoore> myself, haxxa tried using it to measure the current on his uC circuit
[13:20] <edmoore> didn't budge off 0
[13:20] <edmoore> regardless of current range
[13:20] <edmoore> yet he says the circuit still worked which is odd, wonder if it was conducting through the shunt
[13:20] <gonzo_> have you ever lent the meter to someone to test their car battery?:
[13:20] <edmoore> oh no, no contact on 2nd picture
[13:21] <myself> It'll only read from the big shunt if it's in the 10A range. In the 200mA range, it's trying to read from the voltage terminals, through the burden resistor.
[13:21] <Haxxa> edmoore lets say I want to spend less than $100 can I get decent stuff fluke 87 costs more than I am willing
[13:21] <myself> Burden voltage in cheap meters is typically very high, on the order of a whole volt or more, so that'll cause problems regardless.
[13:21] <edmoore> yes but from the angle of the 1st picture i thought maybe the fuse was in contact with the shunt
[13:22] <myself> You can get really nice stuff for under $100. If you're in the US, get whatever Sears has for $30 this week.
[13:22] <Haxxa> wait so does the shunt does explode or something
[13:22] <edmoore> phsyically touching
[13:22] <edmoore> no, ignore shunt talk
[13:22] <edmoore> it's only to do with the 10A side
[13:22] <myself> The shunt should not explode. If the shunt explodes, that means you tried to pass way more than 10A through it, which you shouldn't do.
[13:22] <edmoore> nothing to do with anything here
[13:23] <myself> (Mot meters ship with leads that'll melt well before you hit 10A, anyway)
[13:23] <edmoore> Haxxa, like i mentioned, this one: http://www.amazon.co.uk/Instruments-EX330-12-Function-Multi-Meter-Non-Contact/dp/B000EX0AE4
[13:24] <edmoore> won a little comparison of lots of meters at that price by a countrymen of yours
[13:24] <edmoore> who runs a popular electronics video blog on yourtube called EEVBlog
[13:24] <edmoore> you won't go wrong with it
[13:24] <myself> Ooh. If Dave likes it, and it's affordable, just buy it, simple as that.
[13:25] <Haxxa> edmoore yer I go to hackerspace where he is sometimes
[13:25] <Haxxa> Dave did a tour of it one time
[13:25] <myself> nice :)
[13:26] <myself> I own a handful of Extech stuff, it's all worthwhile. Good quality, solidly built, accurate, affordable. It's not quite as bulletproof as a Fluke but it's usually a quarter of the price or less.
[13:26] <edmoore> i might get that extech actually
[13:26] <edmoore> want a multimeter for home
[13:26] <edmoore> don't want to buy another fluke
[13:27] <myself> My favorite meter of the last few years is an AEMC AC/DC clampmeter, got it from a friend when he was getting out of the cellular business. They used the DCA clamp function to verify battery and ground current during power rewiring jobs. I use it for everything. :P
[13:27] <myself> The AEMC is a bit high-end for hobbyist stuff, but it came with the world's nicest noodle-wire probe leads too. I'm a fan.
[13:28] <Haxxa> edmoore I am going to use there library and hope its not pulling too much problem with using fet is that when the sd card starts again it pulls a lot of power which makes it ineffecit anyway
[13:28] <edmoore> again with the adjectives
[13:28] <SpeedEvil> Haxxa: how much data are you tryin to record per sample, and how much RAM does your microcontroller have
[13:28] <Haxxa> yer sorry its late here
[13:28] <edmoore> the question is really how much does it use vs how much of a saving you get having it completely off for, say, 30 minutes
[13:29] <edmoore> but sure
[13:29] <edmoore> get yourself a working baseline
[13:29] <edmoore> there's a lot of value in that
[13:29] <edmoore> go and buy a decent meter now
[13:29] <edmoore> then measure when it arrives
[13:29] <Haxxa> Speedevil it gets two 3 digit numbers every 15 mins
[13:29] <SpeedEvil> Haxxa: 1K of RAM on your processor will store that for weeks
[13:29] <Haxxa> edmoore I can't dealine is monday
[13:30] <myself> A friend of mine just scored a Mastech version, which also has min/max/hold functions, for like $40. Think it's the MS2018. It's definitely a cheap knockoff, like all mastech stuff, but it does the job well enough. I'd recommend one for hobbyist use.
[13:30] <edmoore> SpeedEvil, i reckon just less than one week
[13:30] <SpeedEvil> Haxxa: that's 288 bytes a day.
[13:30] <Haxxa> is ram similar to eeprom in which it saves in small placements
[13:31] <edmoore> Haxxa, no it's not similar physically
[13:31] <edmoore> yes it's similar in principle except it's voltile
[13:31] <edmoore> so
[13:31] <SpeedEvil> Haxxa: RAM is typically thesedays accessed in 8 bit multiples.
[13:31] <Haxxa> ok
[13:31] <edmoore> if you completely remove power from the microcontroller, the ram gets wiped
[13:31] <edmoore> but usually in sleep modes the ram doesn't get wiped
[13:32] <Haxxa> the researchers want to switch off and upload data from memory card often though so its not a good idea with voitile ram
[13:32] <edmoore> so provided your microcontroller stays on (still sleeping, though check the datasheet for your specific micro) then the ram will stay alive
[13:32] <edmoore> no indeed
[13:32] <Haxxa> it might lose hours of data this way
[13:32] <SpeedEvil> The researchers likely don't understand thepower balance.
[13:33] <edmoore> still
[13:33] <SpeedEvil> That is - a micro in suspend mode may use several microamps.
[13:33] <edmoore> it's hard for us to help really without knowing the spec
[13:33] <SpeedEvil> quite
[13:33] <Haxxa> I know sorry
[13:33] <edmoore> yesterday you implied it was to be left alone for 3 months
[13:34] <craag> 3 months should be easy
[13:34] <edmoore> given it's monday deadline, and i guess you realise this, probably best to sacrifice performance for safety
[13:34] <edmoore> do whatever is low risk
[13:34] <Haxxa> It should be but I don't know what they want to o with it exsactly myself I have not been in direct contact only through 3rd party contact
[13:34] <craag> This is a temeprature sensor and 50mW transmitter, running off 3x Asda Value AAs.
[13:34] <craag> https://www.ukhas.net/nodeInfo?id=48
[13:34] <craag> 7 months so far
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[13:35] <Haxxa> btw I bought L91 today
[13:36] <edmoore> they're good
[13:37] <edmoore> i wish a retort start would say something rude back to you every time you used it
[13:38] <Haxxa> ok I am going to plan
[13:38] <Haxxa> *bed
[13:38] <Haxxa> wow my head is sleepy
[13:40] <SpeedEvil> Haxxa: night
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[14:23] <Piet0r> craag: someone left the fridge open? ;)
[14:37] <craag> Piet0r: That one is my south-facing room :)
[14:37] <craag> The fridge one... I took to EMF and I've lost it
[14:37] <craag> still transmitting
[14:37] <craag> so somewhere in the house
[14:37] <craag> but dunno where :P
[14:39] <craag> oh hang on I did put it back in the fridge
[14:39] <craag> yes LOL you're right!
[14:40] <craag> https://www.ukhas.net/nodeInfo?id=50
[14:42] Nick change: uwe__ -> uwe_
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[15:20] <Pfysmate> What are the pros and cons of rtty baud rates of 50 or 300 against ease of decoding and transmission time?
[15:21] <UpuWork> 50 slower but easier to decode 300 faster but harder to decode
[15:22] <edmoore> those are the pros and cons Pfysmate
[15:22] <edmoore> you just wrote them down
[15:23] <mattbrejza> normally its not worth 300 for just position, more often used if you have lots of sensors
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[15:34] <Pfysmate> So if the message is just the minimum of position, altitude etc the TX time at 50 baud would be in the order of 8 to 10 seconds or so, what would you suggest for the repetition rate 30s, 1m, 2m?
[15:34] <edmoore> all the time
[15:34] <edmoore> why not
[15:34] <edmoore> if you've the power budget
[15:35] <SpeedEvil> Transmitting intermittently makes the signal difficult to find, and in some cases turning the transmitter off can make it drift rapidly
[15:44] <Pfysmate> Thanks, some interesting suggestions
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[16:33] <SpacenearUS> New position from 03EDUPIC4 after 039 hours silence - 12http://habhub.org/mt/?focus=EDUPIC4
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[17:31] <SpacenearUS> New vehicle on the map: 03PIFALCON - 12http://habhub.org/mt/?focus=PIFALCON
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[18:00] <LeoBodnar> Today was the first known US amateur superpressure balloon crossing of the Atlantic
[18:00] <LeoBodnar> Just in case you have slept over it
[18:01] <arko> wow
[18:01] <LeoBodnar> well done http://aprs.fi/#!call=a%2FAETH22-1&timerange=604800&tail=604800
[18:02] <LeoBodnar> back to discussing arduinos
[18:02] <fsphil> still have my igate running, just incase
[18:02] <fsphil> doubt any will come this far north
[18:03] <arko> LeoBodnar: is it a custom balloon?
[18:03] <LeoBodnar> i have no details unfortunately but it can't not be
[18:03] <arko> oh wow, look at that float alt
[18:03] <LeoBodnar> 12km float with significant payload
[18:04] <LeoBodnar> no diurnal altitude variations
[18:04] <arko> damn, good on them!
[18:04] <arko> well done
[18:04] <LeoBodnar> gives me butterflies
[18:04] <arko> lol
[18:05] <LeoBodnar> i'm in love
[18:05] <arko> haha
[18:05] <LeoBodnar> i need to get a picture of it
[18:05] <myself> heh, is that gatewaying through you right now?
[18:05] <LeoBodnar> it was
[18:05] <arko> send them a QSL card :P
[18:05] <myself> send them a QSL balloon!
[18:05] <arko> haha
[18:05] <LeoBodnar> they are brothers in arms
[18:06] <LeoBodnar> both floating at 12km over oceans
[18:06] <arko> just like demosceners, "Greeting from Leo"
[18:06] <myself> little cutdown device, waits until it's inside the US geofence...
[18:06] <arko> "BigRedBee: BeeLine GPS version 10 (tracker)"
[18:06] <arko> interesting..
[18:07] <myself> arko: oh man, the ultimate text scroller, array of LEDs down the tether, doing a slow-scan PoV display as it drifts across the night sky... have to read it with a long-exposure photo. :)
[18:07] <LeoBodnar> 8 days worth of batteries
[18:07] <arko> myself: nice idea!
[18:07] <arko> do it
[18:07] <arko> :)
[18:07] <arko> LeoBodnar: must be man! those eat power like a mad man
[18:07] <fsphil> you'd have to do morse though
[18:08] <fsphil> unless you can get 8 balloons to fly in parallel
[18:08] <arko> loon sky graffiti
[18:08] <myself> nah, just a longass tether.
[18:08] <fsphil> ah tether, didn't see that bit
[18:08] <fsphil> yes. a really big'en
[18:09] <myself> shift regi....WS2812B's up the tether :) muahaha
[18:09] <fsphil> "I AM B, IN UR SKY. GREETZ TO UKHAS"
[18:10] <fsphil> or have it draw a $$ string
[18:10] <LeoBodnar> all your b are b-long to us
[18:10] <fsphil> plan B
[18:10] <ulfr> I see what you did there.
[18:11] <arko> haha
[18:13] <SpacenearUS> New vehicle on the map: 03SC6 - 12http://habhub.org/mt/?focus=SC6
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[18:26] <arko> oh right
[18:26] <arko> USA
[18:26] <arko> USA!!
[18:26] <arko> U
[18:26] <arko> S
[18:26] <arko> A
[18:26] <arko> ATLANTIC CROSSING
[18:26] <arko> too bad the person that did it isnt here
[18:27] <natrium42> arko: what happened?
[18:28] <arko> transatlantic crossing from a US hab
[18:28] <arko> http://aprs.fi/#!call=a%2FAETH22-1&timerange=604800&tail=604800
[18:28] Action: arko puts on party hat
[18:28] <SpeedEvil> :)
[18:28] <arko> WE ARE #2! F**K YEAH
[18:28] <natrium42> sweet!
[18:28] <arko> :P
[18:28] <natrium42> who launched it?
[18:28] <arko> actually #1 from the california peeps
[18:28] <arko> not sure
[18:28] <arko> leo doesnt know who they are either
[18:28] <arko> not sure how he found it
[18:29] <natrium42> strange
[18:29] <arko> you know them?
[18:29] <arko> i guess not
[18:29] <arko> heh, since you asked
[18:29] <arko> sorry, im hyped on coffee
[18:29] <fsphil> you're not uppercase enough for coffee
[18:29] <LeoBodnar> Ben Longmier from MI Uni
[18:30] <arko> oh nice!
[18:30] <arko> fsphil: i feel like that chick from Real Genius, rambling at fullspeed
[18:30] <SpeedEvil> anything other than a tracker?
[18:30] <myself> arko: Jordan, actress Michelle Meyrink.
[18:30] <myself> (I'll be in my bunk.)
[18:30] <fsphil> I don't know what that is arko :)
[18:31] <fsphil> but I'm picturing Fry from Futurama on coffee
[18:31] <LeoBodnar> they have been doing it *for ages* http://aprs.fi/#!call=AETH*
[18:31] <myself> fsphil: http://www.imdb.com/title/tt0089886/
[18:31] <arko> fsphil: you never saw Real Genius?
[18:31] <fsphil> https://www.youtube.com/watch?v=2IZkDpg51DQ
[18:31] <fsphil> no, don't think that I have
[18:32] <arko> DUDE
[18:32] <myself> Fix that right away.
[18:32] <arko> go watch that now
[18:32] <arko> https://www.youtube.com/watch?v=E0aNsWbWr1s&t=1m
[18:32] <fsphil> is this one of these "I've not seen star wars" moments? (I haven't, not all the way through anyway)
[18:32] <myself> When I heard that my sister had landed an internship in a laser physics lab, I made her sit down and watch Real Genius with me.
[18:32] <arko> you've seen War Games?
[18:32] <fsphil> yes
[18:32] <arko> well done
[18:32] <fsphil> lol
[18:33] <fsphil> the rock I live under isn't that big
[18:33] <myself> she called me a week later and said something along the lines of "Thank you, EVERYONE HERE speaks in quotes from that movie, it is their entire vocabulary. So much would go over my head if I hadn't seen it"
[18:33] <arko> haha
[18:33] <SpeedEvil> :)
[18:33] <arko> so yeah, that character
[18:33] <SpeedEvil> ^also, Bond
[18:33] Action: SpeedEvil tries to remember the one with the laser
[18:34] <SpeedEvil> Goldfinger
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[18:34] <fsphil> aww not on netflix
[18:35] <arko> fix it fix it fix it
[18:35] <LeoBodnar> http://dilbert.com/dyn/str_strip/000000000/00000000/0000000/000000/00000/1000/100/1132/1132.strip.sunday.gif
[18:36] <arko> hahaha
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[18:43] <myself> Wow.
[18:43] <myself> The last girl I dated isn't in this channel, so I can say frankly: That is spot-on.
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[18:55] <PA3WEG> Brilliant clip
[18:55] <PA3WEG> hi Guys
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[19:05] <jededu> I am postponing the EDUPIC launch untill Sunday its a much better forcast
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[20:44] <Laurenceb__> did the AETHR floater cross the atlantic?
[20:45] <arko> yep!
[20:46] <myself> http://aprs.fi/#!call=a%2FAETH22-1&timerange=604800&tail=604800
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[20:59] <SpeedEvil> ::)
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[22:15] <SpacenearUS> New vehicle on the map: 03WB8ELK-5 - 12http://habhub.org/mt/?focus=WB8ELK-5
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[22:30] <thasti> thx fer tracking 0x01 today :)
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[22:46] <SpacenearUS> New vehicle on the map: 03SC7 - 12http://habhub.org/mt/?focus=SC7
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[23:09] Action: amell wonders when daveake is launching
[23:09] Action: daveake wonders too
[23:09] Action: arko dances
[23:09] <amell> looks interesting& rssi and rxcount& :)
[23:09] <daveake> less important than when, is what
[23:09] <daveake> tharr be clues
[23:10] <amell> uplink
[23:10] <daveake> nope
[23:10] <amell> floating net
[23:10] <daveake> The payload names are clues too
[23:10] <daveake> Anyway, SC7 is 868 LoRa Tx
[23:10] <daveake> er
[23:10] <daveake> SC6 is
[23:10] <daveake> SC7 is LoRa Rx, RTTY Tx
[23:11] <amell> 868 :( poo.
[23:11] <daveake> http://imgur.com/zH74EPc
[23:11] <daveake> You miss the point
[23:11] <daveake> See the pic
[23:11] <amell> i got it
[23:11] <daveake> 868 is irrelevant
[23:11] <daveake> The downlink is 434 rtty
[23:11] <amell> reporting each other via the inter balloon net
[23:12] <daveake> I do have an 868 Pi gateway but hopefully that won't be needed
[23:12] <amell> am i right or am i right?
[23:12] <daveake> eventually :/
[23:13] <daveake> I might do an uplink too
[23:13] <amell> sunday looks like an ok day for this
[23:13] <daveake> yeah
[23:14] <amell> next week is completely non-HAB weather
[23:14] <daveake> Yeah it's that time of year again
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[23:22] <daveake> http://i.imgur.com/MGfoLUB.jpg should make it clear
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[23:23] <amell> whats the application of this though&.?
[23:24] <craag> that is cool :)
[23:24] <daveake> craag gets it
[23:24] <craag> yep :D
[23:25] <amell> youre repeating the sc6 through sc7 rtty
[23:25] <daveake> You're repeating what I said :p
[23:25] <craag> so if sc6 is over the horizon from you
[23:25] <craag> like way over the sea
[23:25] <craag> but sc7 is in range
[23:25] <amell> i refer you to what i said earlier reporting each other via the inter balloon net
[23:25] <daveake> So one might have a Leo-style armada from the UK across Europe, all passing positions back
[23:25] <craag> a very basic implementation of that yes amell
[23:26] <daveake> It's not a net there's no protocol and precious little logic, but it'll be fun
[23:26] <craag> it's a demonstration of what a net could do
[23:27] <daveake> And for this test flight, the rtty element will mean that anyone can listen in whether they have lora h/w or not
[23:27] <amell> isnt this the idea behind ukhasnet?
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[23:27] <daveake> That's not really intended for balloons
[23:27] <daveake> and that is a net this isn't
[23:28] <daveake> this is just a test/demo of what lora can do
[23:28] <amell> ukHASnet isnt for balloons? :)
[23:28] <daveake> and if it works then an uplink is a piece of p
[23:28] <daveake> isn't designed for, no, but has been used for
[23:28] <craag> amell: ukhasnet could be used for this as well potentially
[23:29] <craag> but dave is trying another way :)
[23:31] <daveake> as is dave's way :p
[23:32] <daveake> I started on lora a couple of weeks before the conf, which was the first time I got interested in ukhasnet
[23:33] <daveake> Don't really have time to be working on both
[23:41] <SpacenearUS> New vehicle on the map: 03VK3YT-9 - 12http://habhub.org/mt/?focus=VK3YT-9
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[23:42] <SpacenearUS> New vehicle on the map: 03PS - 12http://habhub.org/mt/?focus=PS
[23:48] <amell> interesting&. when i start this lora module, my bluetooth mouse stops working..?!?
[23:51] <amell> any theories?
[23:51] <amell> harmonics?
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[00:00] --- Sat Oct 4 2014