highaltitude.log.20140316

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[07:42] <Reb-SM3ULC> morrn
[07:43] <x-f> morning, Rebounder
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[07:51] <sa6bss> god morgon
[07:56] <DL7AD> morning Reb-SM3ULC x-f sa6bss :)
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[08:59] <Babs_> all - is sprintf just a library function for a loop that builds the elements of an array from a sequence of letters ? Just looking at http://ukhas.org.uk/guides:linkingarduinotontx2 - can't seem to find many references to sprintf on the web
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[08:59] <Babs_> does it add anything on the end of it?
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[09:01] <mclane> sprintf works like printf; it only prints to a string
[09:01] <mclane> you have to add CR/LF manually
[09:01] <mclane> like in printf
[09:03] <Babs_> so in that example, the last element of datastring is datastring[31] and it is N ?
[09:03] <mclane> yes
[09:04] <Babs_> cool - thanks mclane
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[09:10] <mikestir> Babs_: mclane: no it's datastring[33] and it's \0 (NULL character)
[09:10] <mikestir> your buffer must be long enough to hold that as well
[09:12] <Babs_> so if i was replicating it from first principles, i would do a loop to take the string "RTTY TEST BEACON RTTY TEST BEACON\0" into the array?
[09:12] <mikestir> I got the N in datastring[32], so one of us miscounted, but it still demonstrates the point that sprintf outputs the null terminator as well
[09:13] <mikestir> basically yes, although the null would already be there in your input string because that's how C determines the end of a string
[09:14] <Babs_> are the elements on an array 0 by default?
[09:15] <mikestir> as an aside, you should generally never use sprintf because it does no bounds checking. Use snprintf which also takes the available buffer size as an argument (and is otherwise the same)
[09:15] <mikestir> Babs_: no. depends how you got the memory for the array
[09:16] <Babs_> so how can the last 0 be in there then?
[09:16] <mclane> array index starts at 0
[09:16] <mikestir> mclane: yeah I still got N at 32
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[09:17] <Babs_> will it essentially work if i was to put "RTTY TEST BEACON RTTY TEST BEACON\0" into the elements of an array (even though it might not be so efficient)
[09:17] <Babs_> i want to get it working first, and then make it more efficient
[09:17] <mikestir> Babs_: if you built the string by writing characters individually then you would need to do the \0 yourself (e.g. buf[0]='H'; buf[1]='I'; buf[2]='\0';)
[09:17] <mclane> there is no string datatype in c
[09:18] <mclane> the \0 is needed only if you use the library functions
[09:18] <mikestir> but if your input string is written as a string (e.g. const char* str="HI";) then the null is part of the definition
[09:18] <mclane> strings are arrays of char
[09:18] <Babs_> in the case of the sample code, is it correct to write ''\0' as one element of the array, or does it need to be split into 2?
[09:19] <Babs_> as in buf[2]='\', buf[3]='0'
[09:19] <mclane> \0 is one char (non printable, hex 0x00)
[09:19] <mikestir> no, \0 is a single character
[09:19] <mikestir> like \n
[09:19] <Babs_> ok, thanks
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[09:30] <mikestir> that example code on the wiki has a rather nasty buffer overflow bug caused by failure to consider the null actually
[09:30] <mikestir> the checksum format string is "*%04X\n", which is 6 characters, requiring a 7 byte buffer
[09:30] <mikestir> checksum_str is only 6 bytes long and is on the stack, so that code will corrupt the stack
[09:32] <mikestir> luckily it is likely only screwing up the contents of CHECKSUM, which isn't used again
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[10:45] <gonzo_nb> any clues when G02 is planned to go up?
[10:47] Last message repeated 1 time(s).
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[10:48] <gonzo_nb> test
[10:50] <fsphil> pass
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[10:52] <mikestir> you're not planning on doing a rare up-north launch there are you fsphil?
[10:52] <fsphil> not until next week (maybe)
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[10:59] <Upu> as soon as I get my temp code working I'll launch one
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[11:19] <newbie|2> gonzo_nb: 14.00 https://groups.google.com/forum/#!topic/ukhas/AaLO9pGdRn0
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[11:38] <amell> hmm. G-02 email says 480Hz shift, but the auto configure is 470Hz.
[11:40] <Geoff-G8DHE> Its not always that critical to be honest and will probably vary withtemp anyway!
[11:41] <amell> all set up for listening and reporting now. Got visitors unfortunately. so if it does hear it will report.
[11:41] <bertrik> if it uses an RFM22B, the shift will be very predictable I think
[11:41] <amell> What do i put in QTH in dl-fldigi?
[11:41] <amell> and locator
[11:42] <Geoff-G8DHE> QTH=Home location
[11:42] <amell> plain text?
[11:42] <amell> how will space near.us plot my station?
[11:42] <Geoff-G8DHE> locator is the Maidenhead locator system use google
[11:42] <Geoff-G8DHE> habitat uses the lat/long alt in the dl config section
[11:43] <Geoff-G8DHE> yes plain text its what flgig uses to send automatically when transmitting
[11:44] <Geoff-G8DHE> snus/habitiat has its own config Tab at the righthand end
[11:45] <Geoff-G8DHE> convert lat/long locator http://www.amsat.org/amsat/toys/gridconv.html
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[11:46] <amell> thanks, think i'm fully set up now
[11:47] <amell> yep. I'm on the map.
[11:48] <Geoff-G8DHE> You are indeed ;-)
[12:02] <Maxell> Welcome! \o/
[12:05] <mikestir> Maxell: did you ever get your hf setup sorted after the problems you were having the other week?
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[12:12] <Maxell> mikestir: sort of. I got hold of 20 meters RG-213 coax so I do not have to sit under the antenna anymore.
[12:12] <Maxell> I can now also enjoy the confort of sitting in my own room.
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[12:13] <Maxell> So I presume the USB sound card will not crash anymore.
[12:14] <Maxell> The touch-sensitive lamp will still be activated and might need some ferrite clamps on the audio gear.
[12:15] <mikestir> it should really be ok if your coax isn't radiating in the room
[12:16] <Maxell> I tested both the lamp, USB sound card and audio system with the rig plus dummy load next to it. It did not trigger.
[12:16] <fsphil> Maxell: I put some ferrites on the audio cable going into my usb sound card (why do we call them cards?) -- this stopped it crashing on TX
[12:17] <Maxell> fsphil: between your rig and sound card?
[12:17] <Maxell> usb donle :)
[12:17] <fsphil> Maxell: yea, on the sound card side
[12:18] <fsphil> the cable was acting like an antenna
[12:18] <Maxell> How many turn? The mini din 6 pigtail is rather large in diameter and quite stiff.
[12:18] <fsphil> oh this was just a standard audio lead
[12:18] <fsphil> I got about four turns into it
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[12:19] <Maxell> ah, might need to salvage larger ferrite bead to do >1 turns.
[12:19] <Maxell> However, since I do not have to sit under the antenna anymore I do not think it will cause any problems anymore,.
[12:19] <mikestir> give it a try if you want. I'll have a listen
[12:21] <db_g6gzh> Maxell: maybe use a clip-on sleeve like http://uk.rs-online.com/web/p/ferrite-sleeves/1161471/
[12:21] <Maxell> mikestir: ah, I would need to get the lab power supply. I don't have it at hand right now.
[12:22] <Maxell> Thanks anyway. Might have later today :)
[12:23] <mikestir> ok
[12:23] <Maxell> db_g6gzh: yeah, I have a quite simmilar one. However I can't make a loop in it, the cable is too big.
[12:23] <mikestir> 10m has been very good in the afternoon recently
[12:24] <db_g6gzh> Maxell: yeah, they're not really for looping but can help
[12:25] <Geoff-G8DHE> USMAERO last on -4373 hours ago ? In Malaysia, a bit odd seen it there before ?
[12:27] <Maxell> mikestir: even VHF has been quite OK iirc
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[13:47] <g0pai_ian> .
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[13:54] <fsphil> good point
[13:57] <Geoff-G8DHE> too true!
[13:57] <db_g6gzh> G-02 is sending NO GPS SIG - Sats in View = 0 - Batt Volts = 2.984V - Loop Volts = 1.635V - Xtal trim = 95
[13:58] <G8KNN> it was doing that last night
[13:58] <G8KNN> not sure what he did to get a fix though
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[13:59] <db_g6gzh> Seems a strong signal so I'm a bit concerned it's up
[13:59] <G8KNN> yes, it seems so :-(
[14:00] <G8KNN> he was going to launch it from Peterborough
[14:00] <G8KNN> it's very strong here though
[14:00] <db_g6gzh> Oh right, not from home this time.
[14:01] <db_g6gzh> I don't think I've ever heard anything this strong
[14:01] <amell> is it on freq? I'm not getting it
[14:01] <G8KNN> 434.124
[14:01] <db_g6gzh> 434.123.5
[14:01] <amell> 434.125?
[14:01] <amell> ok
[14:02] <db_g6gzh> 4 sats now
[14:02] <db_g6gzh> let's hope for a fix
[14:02] <db_g6gzh> aha
[14:02] <G8KNN> got a fix
[14:02] <amell> still not seeing it :(
[14:03] <db_g6gzh> Peterborough it is then!
[14:04] <Maxell> http://spacenear.us/tracker/?filter=G-02 in the air :)
[14:04] <Upu> can see it in West Yorkshire
[14:04] <db_g6gzh> you can see the frequency correction at work
[14:05] <G8KNN> its quite granular
[14:05] <db_g6gzh> yes, I've widened the filters a bit
[14:05] <G8KNN> same here
[14:05] <Upu> thats a wierd one :)
[14:06] <Pascend-Ross> G8APZ: Thanks for the screenies!
[14:06] <G8APZ> too choppy a process for staying on tune!!
[14:06] <G8APZ> Pascend-Ross I sent wrong one first... I have another 10 or so ... one at a time!
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[14:09] Nick change: Steve_G0TDJ_AFK -> Steve_G0TDJ
[14:09] <Steve_G0TDJ> Hey Guys
[14:09] <Upu> hola Steve
[14:09] <Pascend-Ross> G8APZ: haha, love the signiture "Not sent from an iPhone: I don't have one and I don't want one."
[14:09] Nick change: Upu -> Upu_M0UPU
[14:09] <craag> Afternoon Steve
[14:09] <Steve_G0TDJ> Anthony, Phil...
[14:10] <Steve_G0TDJ> Nothing heard from G-02 here yet but it needs to be up a lot further
[14:10] <Upu_M0UPU> my intial thought is the correction needs not to be done midsentence
[14:11] <daveake> I agre*&*&*&*
[14:11] <G8APZ> Pascend-Ross I'll deal with the pics after this flight......
[14:11] <craag> Traces appearing on websdr beyond blue circle... that's a first
[14:11] <Upu_M0UPU> yay 817 vs FCD 817 wins
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[14:11] <db_g6gzh> It's strong enough here for the corrections not to break the decode (with wider filter settings)
[14:12] <Upu_M0UPU> yeah once the strength came up it was ok
[14:12] <amell> still not hearing it and its over my bleeding head
[14:12] <Upu_M0UPU> FCD is struggling
[14:12] <Upu_M0UPU> that may be the issue Amadiro
[14:12] <Steve_G0TDJ> Very weak traces on my W/F
[14:12] <Upu_M0UPU> grr amell
[14:12] <amell> i think i am not using dl-fldigi properly
[14:12] <Pascend-Ross> G8APZ: No problem!
[14:12] <Upu_M0UPU> screen shot amell
[14:13] <craag> Corrections are breaking otherwise perfect decodes here.
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[14:13] <G8APZ> craag I noticed that too! +20dBm? LOL
[14:14] <craag> I might have to question the power output... I'm at 23dB on the blue line.
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[14:14] <G8APZ> corrections causing most of the drift I think!!
[14:14] <Steve_G0TDJ> Drifting all over....
[14:14] <amell> http://imgur.com/yCPTofP
[14:14] <Upu_M0UPU> screen shot the SDR as well
[14:15] <Upu_M0UPU> well this is old school having to actively do something to track :)
[14:15] <daveake> :)
[14:16] <daveake> wossup with it only having 4 sats?
[14:16] <amell> http://imgur.com/wp1MVFb
[14:16] <db_g6gzh> it started with 0 8-)
[14:16] <craag> and losing lock a lot
[14:16] <daveake> Ah well they all do :p
[14:16] <Upu_M0UPU> I don't see it on there amell
[14:16] <Upu_M0UPU> plaintext :)
[14:16] <amell> my antenna must be incompetent then
[14:17] <Upu_M0UPU> where is it ?
[14:17] <Geoff-G8DHE> what aerial is it ?
[14:17] <amell> Watson WM-270
[14:17] <mfa298> where is the antenna mounted ?
[14:17] <amell> on my filing cabinet
[14:18] <Upu_M0UPU> throw it out of the window
[14:18] <Geoff-G8DHE> indoors ?
[14:18] <amell> yeah, usually picks up ok. i don't have a ground plane outside
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[14:18] <Upu_M0UPU> car roof ?
[14:18] <G8APZ> Oh that's a nice message!!
[14:18] <G8APZ> Plain text NO GPS SIG!
[14:19] <amell> just got it
[14:19] <G8APZ> xtal trim 95
[14:19] <jededu> Just had one that started NO GPS SIG
[14:19] <amell> jesus. its a strange waterfall
[14:19] <mfa298> amell: if the balloon is right over you the signal will also be weaker due to how antennas work
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[14:19] <G8APZ> any antenna will hear a signal that close!
[14:20] <craag> G8APZ: You'd be surprised..
[14:20] <craag> nulls are deep things
[14:20] <amell> http://imgur.com/pqeqvoK
[14:20] <db_g6gzh> amell: that noise floor looks high, might be worth checking the "input controls"
[14:20] <G8APZ> I would be! I get sigs from aircraft at 30,000' from above!!
[14:21] <amell> 434.088640
[14:21] <G8APZ> 434.1245
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[14:22] <amell> got her baby
[14:22] <amell> mid sentence
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[14:22] <amell> first upload :)
[14:23] <craag> Ah no correction.. that's nice.
[14:23] <db_g6gzh> amell: good stuff 8-)
[14:23] <amell> finally :)
[14:25] <craag> s/n 28dB on the websdr!
[14:25] <craag> 30!
[14:25] <Steve_G0TDJ> Was getting some partials here. The skipping about isn't helping,
[14:25] <aadamson> wow, so, why is this one all over the map on frequency?
[14:26] <Steve_G0TDJ> Is it the PLL changing the freq?
[14:26] <Upu_M0UPU> oddly the 817 seems to be smothing the jumps out, the SDR can't deal with it
[14:26] <aadamson> oh, that's right this was the science experiement with the pll control
[14:27] <Upu_M0UPU> its working but its very coarse
[14:27] <aadamson> adc steps maybe?
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[14:27] <aadamson> will be interesting to see if over time the mean stays constant
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[14:31] <db_g6gzh> so far I would say it does
[14:32] <Steve_G0TDJ> Is this one expected to float?
[14:32] <aadamson> yeah, it's jumps around after a drift of approx 50-76hz, but the Mean is staying pretty constant
[14:32] <G8KNN> Steve_G0TDJ: yes I think so
[14:32] <Steve_G0TDJ> Cool
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[14:33] <wd8mnv> is this 7E2?
[14:34] <craag> wd8mnv: 7n2
[14:34] <aadamson> hope an occasional data send to the hab repo from the US wont screw things up too bad, I probably should change my lat/lon when on the sdr :)
[14:34] <wd8mnv> k... somewhat noisy maybe
[14:35] <craag> aadamson: It just looks like you must have a *really* tall mast :P
[14:36] <aadamson> craag, yea, my *perfect* antenna :)
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[14:36] <wd8mnv> i think there's an offline setting in that version
[14:37] <aadamson> it's interesting, if the pll pull is slow enough the the afc will track it
[14:37] <G8APZ> craag Just looked back at first partial decode - It was packet 01 then a partial of 02 at 14:02:49 Brentwood to Peterborough - must be a lift!!
[14:37] <craag> aadamson: Widen up the rx filters and it'll track it anyway
[14:37] <craag> I haven't had to touch it at all
[14:37] <craag> (167hz filter)
[14:37] <G8APZ> craag got decodes from packet 04!
[14:38] <craag> G8APZ: Yeah microwave bands are buzzing at the moment, must be stretching down to 70cm :)
[14:38] <aadamson> ah, got it, just made that change
[14:39] <craag> Although usually if there's a lift, the fylingdales radar deafens the websdr frontend
[14:39] <G8APZ> Pity my 5.7/10/24GHz isn't on the mast at the mo!
[14:39] <craag> Upu's habamp must be doing its job..
[14:40] <Upu_M0UPU> have been known to work occasionally :)
[14:40] <craag> heh, it wasn't installed last time
[14:40] <craag> Also we have the 2m version going in at MH soon
[14:41] <Upu_M0UPU> yeah someone mentioned that
[14:41] <Upu_M0UPU> I'd appreciate any feed back
[14:41] <Upu_M0UPU> I've not really pushed that one
[14:41] <Upu_M0UPU> but it all checks out on Darkside's VNA
[14:41] <Steve_G0TDJ> First green
[14:42] <wd8mnv> tx seems a bit drifty...
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[14:42] <craag> Yeah we'll let you know
[14:43] <G8APZ> wd8mnv it's trying to adjust o/p qrg continually!
[14:43] <aadamson> it's running a custom pll hdw/sw that is experiemental to see if it can counter act the drift
[14:43] <G8APZ> deliberately
[14:43] <G8APZ> continuously I meant
[14:44] <aadamson> while it's drifting up and down due to the pll changes, the mean is staying pretty constant
[14:46] <wd8mnv> is this a floater?
[14:46] <Upu_M0UPU> its a foil so it has the potential to float
[14:47] <amell> jumping around a lot.
[14:47] <amell> I'm on 434.088130
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[14:48] <G8APZ> the transmission is on 434.1245
[14:48] <amell> suspect i may need calibration
[14:48] <Upu_M0UPU> oh RTL dongles are usually way out
[14:49] <G8APZ> 37kHz is some way out at 70cm!!
[14:49] <Upu_M0UPU> its currently at 434.123.5
[14:49] <G8APZ> well yes.. I have sig centred on 1000
[14:50] <Steve_G0TDJ> 43412385 centered on 1500 fo the center of the FT857s passband
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[14:51] <amell> lost it. fiddled with settings and lost it
[14:53] <db_g6gzh> amell: gqrx has a frequency correction field in the input controls, you could calibrate against a local 70cm repeater when you get the chance
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[15:03] <bertrik> yay, first green decodes here
[15:03] <Maxell> bertrik: good
[15:04] <Maxell> mikestir: hehe, Vladimir OK2PDM just informed me that my Olivia signal was looking clean and no problems at his end decoding
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[15:14] <fsphil> VK3YT-11's got a rather odd altitude plot
[15:15] <Upu_M0UPU> Flight Mode 7 (Code name Mexico) engaged
[15:15] <G8APZ> Pascend-Ross That's all the 12 emails sent ....
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[15:16] <Pascend-Ross> thats great, thnaks!
[15:17] <G8APZ> Pascend-Ross There is a very close in view of the farmyard showing the route the farmer took when he picked it up! The red line all around the farmyard is probably minor GPS errors
[15:18] <Pascend-Ross> G8APZ: Yeah, we were thinking that, from the footage we can see that It is stationary all the time when it is actaully in the yard!
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[15:20] <G8APZ> Pascend-Ross anyway, a few more pics to add the the HAB55331 dossier!
[15:20] <G8APZ> W7QO needs a new lat/long for the sdr!
[15:22] <Maxell> bertrik: quite drifty eh?
[15:22] <aadamson> yeah, yeah, yeah... I kjnow
[15:22] <aadamson> aadamson - W7QO
[15:22] <aadamson> I'll just turn off sends to the server
[15:22] <craag> aadamson: No don't do that
[15:23] <craag> Just set it to around 51.294, -1.131
[15:23] <Maxell> Also turning off and on at the end of the checsum?
[15:23] <Maxell> Soem some weird jump.
[15:23] <g0pai_ian> I guess that if you are going to experiment with the payload tx, then a backup tx is a very good idea . . .
[15:23] <craag> aadamson: Especially with this signal, the more people listening to it with slightly different dlfldigi settings, the better
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[15:24] <aadamson> ok, see if that helps. I changed the lat/lon
[15:24] <craag> aadamson: It did :)
[15:24] <Geoff-G8DHE> is the PLL trying to average out the rtty shift I wonder ?
[15:24] <craag> thanks
[15:29] Nick change: Chetic_ -> Chetic
[15:30] <amell> my biggest problem seems to be noise. I can't see the G02 transmission on the fft through the noise.
[15:30] <G8APZ> Geoff-G8DHE - Graeme (builder of G002) said in his email "I have a 12MHz TCXO clocking my pic micro, this has a reference osc output, which only has binary division available so I've set this to /4 to give 3MHz output. A handy feature of the RFM22 is a clock available on GPIO2 (which is intended to clock a micro) this is programmable, and has a 3MHz clock output available. These two 3MHz clocks are fed to a "tiny" SOT23 single log
[15:31] <G8APZ> amell where is your location?
[15:31] <amell> I'm the one just southeast of huntingdon
[15:32] <amell> lucky to have heard it at all.
[15:32] <G8APZ> amell OK - you should be getting a big signal at that distance... probably about 65km
[15:32] <amell> all i am seeing is noise
[15:33] <amell> mind, it is on the other side of the house from the aerial...
[15:33] <G8APZ> amell it came very close to you in early part of the flight!
[15:33] <amell> i only just got it then
[15:33] <Geoff-G8DHE> If you unplug the aerial does the base noise level drop ?
[15:33] <mfa298> amell: is the antenna still indoors ?
[15:34] <amell> yes indoors
[15:34] <Upu_M0UPU> come back when its outside :)
[15:34] <G8APZ> :-)
[15:34] <amell> its that crucial?
[15:34] <Upu_M0UPU> very yes
[15:35] <amell> okay. is loft mount good enough?
[15:35] <Geoff-G8DHE> The walls of a brick house contain a lot of water ... yes
[15:35] <G8APZ> 10mW will not penetrate brick very well!
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[15:35] <mfa298> putting it in the loft will help, but outdoors is best
[15:36] <mfa298> windows can block RF as well - I've moved an antenna from just inside the window to just outside and the difference is huge
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[15:42] <Reb-SM3ULC> mfa298: glass vs microwaves seem very bad, have many examples of 2.4 ghz penetrating thick walls much easier than double-pane windows
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[15:42] <mfa298> Reb-SM3ULC: this was with 434MHz balloons I've particularly seen it - not really tested with anything else.
[15:43] <amell> aerial outside sat on a tin box. still nothing
[15:46] <Maxell> NO GPS SIG - Sats in View = 0 - Batt Volts = 2.923V - Loop Volts = 1.468V - Xtal trim = 95
[15:46] <G8APZ> Oh dear... NO GPS again
[15:46] <G8APZ> I don't believe that message!!
[15:49] <G8APZ> Off it goes for a North Sea crossing... bon voyage!!
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[15:49] <Maxell> What is the rationale of the seperate message?
[15:50] <Geoff-G8DHE> Why not time lat/long gone so explain why!
[15:51] <Maxell> :P
[15:51] <amell> my antenna is clearly beyond crap.
[15:51] <amell> i will have to get a roof mounted one
[15:51] <Geoff-G8DHE> No its just not well placed!
[15:52] <Maxell> amell: yes you will have to.
[15:52] <Upu_M0UPU> antenna is gine
[15:52] <Upu_M0UPU> fine
[15:52] <Upu_M0UPU> I use one all the time on chases in the car
[15:52] <Maxell> It needs a clear view of the sky.
[15:52] <amell> its probably fine in the car.
[15:52] <Upu_M0UPU> get a Watson W50
[15:52] <Upu_M0UPU> stick it on the roof
[15:52] <amell> but I don't have any 3G dongle so...
[15:53] <mfa298> all antennas need a good view of the sky, if it's just on a tin box on the ground you'll have various obstructions in the way
[15:53] <amell> its not easy to get a clear view from the house, unless its roof mounted.
[15:54] <Geoff-G8DHE> Also its picking up all the noise from computers/phines/displays etc when its inside, put the aerial outside and that is attentuated and the signal is improved.
[15:54] <daveake> ^ this
[15:55] <daveake> amazing how much crap they pick up indoors
[15:56] <amell> part of the problem is my usb sdr is uncalibrated. I have no idea what the offset is.
[15:57] <Upu_M0UPU> have you got a habamp on it ?
[15:57] <amell> er. no. whats that
[15:57] <Upu_M0UPU> on your shopping list I suspect
[15:57] <Geoff-G8DHE> It won't be that much off just tune the radio to 434.125 and then adjust the PPM setting to align the frequency in the middle
[15:57] <Upu_M0UPU> http://ava.upuaut.net/store/index.php?route=product/product&product_id=83
[15:57] <Upu_M0UPU> but
[15:58] <Upu_M0UPU> get an external antenna first
[15:58] <amell> this habamp seems a dear do.
[15:59] <db_g6gzh> and decent coax too
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[16:00] <amell> anything else i need? a 4 carat diamond oscillator perhaps?
[16:00] <Upu_M0UPU> nope
[16:00] <Upu_M0UPU> just the antenna and a habamp :)
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[16:01] <mfa298> good antenna in a good location with good coax are probably the place to start.
[16:01] <wd8mnv> and a ruby rod for the laser
[16:01] <mfa298> No radio / amp will help if there's nothing good for them to work with
[16:02] <amell> i took my big FM aerial mast off the roof. Wish I hadn't now
[16:02] <jededu> Can you use very goog quality RG6 for antenna connections
[16:02] <mfa298> if you get the habamp ideally you want it as close to the antenna as possible.
[16:02] <amell> took it off as the pigeons were sitting on it and crapping all over.
[16:02] <mfa298> RG213 is probably the best bet for cost/loss
[16:02] <Upu_M0UPU> and bye bye
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[16:03] <jededu> I have lots or Belden 7915A
[16:03] <Maxell> amell: get some spikes for it
[16:03] <mfa298> I think RG-6 is 75R coax where most radios antennas are 50R so it's not ideal - although may not be a huge issue - but check the loss values
[16:03] <Maxell> or only do one vertical like the x30 or x50
[16:04] <amell> ok. i will get busy on ebay later.
[16:04] <Maxell> mfa298: it might be for TX. However, I would still reccomend RG-213
[16:04] <mfa298> amell: an FM antenna potentially wouldn't help much for HAB, they'll be designed for the FM 88-108 band,not the band used by HAB.
[16:05] <amell> yeah just i took all the mast stuff off.
[16:05] <db_g6gzh> amell: if you still have the pole and brackets thats a start
[16:05] <mfa298> Maxell: sorry that RG6 was aimed at whoever asked was it suitable, Agreed I'd prefer RG213 or better myself
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[16:07] <mfa298> jededu: look up the loss of RG213 vs the Loss of what ever you've got. If the loss of what you've got is lower than that of the RG213 then it might be reasonable to use (although also check the impedance - if it's not 50R there's likely to be a bit extra loss)
[16:07] <jededu> Its just that I have 500M of it I use it for broadcast its 75ohm
[16:08] <jededu> Ill check the loss thanks
[16:08] <mfa298> Ideally check the losses at 430MHz as that's what's of interest for HAB use.
[16:09] Joel_re (~jr@103.20.64.192) joined #highaltitude.
[16:09] <Joel_re> hey
[16:09] <Joel_re> I just came across http://chris-stubbs.co.uk/wp/?p=375
[16:09] <Joel_re> Im wondering if it would perform fine with a RTL SDR dongle
[16:10] <VE6SRV> Anyone know how to get fldigi to accept a custom shift (50/470)?
[16:10] <Geoff-G8DHE> Right click left corner where it says RTTY
[16:10] <Geoff-G8DHE> then set Custom on the shift
[16:10] <VE6SRV> I end up with 50/0
[16:11] <Geoff-G8DHE> Select Custonm in theCarrier Shift box lowest one
[16:11] <Geoff-G8DHE> then adjust the shift using the Custom Shift box below it
[16:12] <VE6SRV> Been there, done that... custom shift, selected 470, click save/close, and I get 50/0...
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[16:12] <G8APZ> Configure/Modems/RTTY/ click custom shift
[16:13] <G8APZ> then save and close
[16:13] <Geoff-G8DHE> Which version are you running ?
[16:13] <VE6SRV> Any custom shift value doesn't seem to save. It always ends up as a zero shift
[16:14] <G8APZ> using the HAB version?
[16:14] <VE6SRV> 3.21.79 latest according to About... is there a different HAB version? If so where do I find it?
[16:14] <Geoff-G8DHE> On the wiki is best
[16:15] <Geoff-G8DHE> http://ukhas.org.uk/projects:dl-fldigi
[16:15] <VE6SRV> http://ukhas.org.uk/projects:dl-fldigi ?
[16:16] <jededu> Loss states 4.1db 100ft
[16:16] <SIbot1> In real units: 100 ft = 30 m
[16:16] <VE6SRV> Off to grab the right version of fldigi...
[16:16] <Geoff-G8DHE> Its the dl-fldigi version Distributed Listener
[16:17] <aadamson> VE6SRV, sent you a reply, you need the dl-fldigi version as discussed above ^
[16:20] <g0pai_ian> Amell* 2m/70cm Colinear antenna candidates that you might like to consider.
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[16:20] <g0pai_ian> Watson W30 length 1.15m gain 3dB/6dB price guide £49 Watson W50 length 1.8m gain 4.5dB/7.2dB price guide £59 Watson W300 length 3.1m gain 6.5dB/9dB price guide £95
[16:20] <g0pai_ian> Essentially, you get what you pay for and if you can't pick up a decent signal, then your RX isn't going to be able to do anything with it. The length/gain/price equation is for you to solve. If you smoke or spend on beer, then give up for a week or two to pay for a better antenna.
[16:21] <g0pai_ian> Best to bite the bullet ££ and get a length of RG8 or RG213 to do the job properly.
[16:22] <g0pai_ian> Try Moonraker for your antenna source
[16:23] <g0pai_ian> Outdoors, every four foot you lift your antenna will produce an audible improvement on received signals. Well worth lofting it a bit.
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[16:23] Nick change: James -> Guest47724
[16:24] <Joel_re> is this 1922.49182 ddmm.mmmm ?
[16:24] <Joel_re> or can someone point me to the right formula for conversion to decimal degrees?
[16:26] <mfa298> Joel_re: it's not a formula as such to convert from one to the other. for the ddmm.mmm format you need to split it into degrees and minutes, then convert the minutes into fractions of a degree
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[16:29] Action: Maxell his Diamond A430S10 is now also pointing towards G-02
[16:30] <Maxell> And this 20 meter piece of RG-213 is *jusT* long enough \o/
[16:30] <fsphil> I like Diamonds antennas. also the fact that the instructions are totally Japanese
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[16:30] Nick change: Guest47724 -> VE6SRV
[16:30] <VE6SRV> Aha, proper program and it works just fine!
[16:31] <Geoff-G8DHE-M> :)
[16:31] <Maxell> fsphil: hihi I got it from a neighbour ham :) (instructions was to use it a lot)
[16:31] <fsphil> hai!
[16:32] <G8APZ> VE6SRV Good!!
[16:33] <fsphil> oD, even
[16:40] <Maxell> :P
[16:40] <g0pai_ian> On the spacenear.us map there is no box on the right to follow/track etc. What is it that causes that to appear please? Is it something that wasn't done pre flight?
[16:41] <Upu_M0UPU> err usually I do it
[16:41] <Upu_M0UPU> but I forgot
[16:41] <Upu_M0UPU> its not automatic
[16:41] G4AIU-Eugene (519db3a7@gateway/web/freenode/ip.81.157.179.167) joined #highaltitude.
[16:41] Nick change: Upu_M0UPU -> Upu
[16:41] <g0pai_ian> Oh, OK, but at least I don't say bad things about masthead amps!
[16:41] <fsphil> g0pai_ian: you may need to refresh a few times
[16:42] <G4AIU-Eugene> Good morning all
[16:42] <fsphil> morn!
[16:42] <fsphil> and by morn I mean evening
[16:42] <Maxell> g0pai_ian: might need to use CTRL+r to force reload things to get removed out of your cache
[16:42] <Maxell> Weak sigs at home :(
[16:42] <g0pai_ian> When Amell said that it was pricey, he obviously hadn't looked at some of the other offerings
[16:42] <G4AIU-Eugene> Even good afternoon all!
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[16:43] <Upu> Hi G4AIU-Eugene
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[16:46] <G4AIU-Eugene> I miss the flight this afternoon - caught a few red lines but no green ones - Hi upu
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[16:47] Nick change: peter -> Guest5856
[16:49] <G4AIU-Eugene> Can someone help me! on my Tracker screen - bottom RH - I have a note which says -"SSDV from ORION 9/0 taken 2695 min ago" - how do I get rid of it?
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[16:50] <Maxell> Diamond A430S10 doing it's job: http://i.sigio.nl/9e9e1a56f670961c597c008ac56e406f.jpg
[16:50] g8gtz (56a4bbf3@gateway/web/freenode/ip.86.164.187.243) joined #highaltitude.
[16:51] <fsphil> hah, the old camera tripod method
[16:51] <fsphil> classic
[16:51] Nick change: BitEvil__ -> SpeedEvil
[16:51] <fsphil> with the additional spin of an outside table and some flowers
[16:53] <G8APZ> XYL not convinced that it is an aluminium sculpture!
[16:54] <Chetic> I desperately need someone with experience to try this radio playback and tell me if it's good enough to fly: http://bayfiles.net/file/19amD/uno5Vl/capture.wav
[16:56] <fsphil> can't seem to download it
[16:56] <G8APZ> my browser FF won't play it without plugins... and I'm not adding any!
[16:59] <Chetic> 'll try dropbox
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[17:00] <Chetic> https://www.dropbox.com/s/dtweadgpuqc1ph8/jesus.wav
[17:00] Action: Chetic is not religious :p
[17:01] <fsphil> what parameters?
[17:02] <Chetic> 50 baud cs7
[17:02] uu4jlm_Valery (c331c855@gateway/web/freenode/ip.195.49.200.85) joined #highaltitude.
[17:02] <Chetic> 50 17N1 I suppose?
[17:02] <Chetic> 50 7N1*
[17:03] Pascend-Jonny (0598c94a@gateway/web/freenode/ip.5.152.201.74) joined #highaltitude.
[17:03] <fsphil> seems to decode fine
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[17:04] <Chetic> right, but the carrier drifts a bit
[17:04] <Chetic> not sure if that's normal
[17:04] <fsphil> didn't notice
[17:04] <Chetic> I seem to remember having a straight carrier line on an older setup
[17:04] <fsphil> some drift is normal
[17:05] <fsphil> actually depending on the radio, a lot of drift is normal
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[17:05] <Chetic> very nice to hear
[17:05] <Chetic> I've been struggling a lot with hardware
[17:05] <Chetic> my first hw project
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[17:08] <Guest5856> Anyone know the transmit frequency for G-02?
[17:08] <Chetic> thanks fsphil !
[17:08] <FERI> what frequency balloon G-02 ?
[17:09] <Guest5856> yes balloon G-02
[17:09] <G8KNN> 434.124
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[17:10] <Guest5856> thanks
[17:10] <FERI> ok tnx
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[17:19] <Babs_> ping fsphil
[17:19] <fsphil> pongs
[17:19] <Babs_> hey fsphil - thanks so much for the email. really really helpful
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[17:20] <fsphil> I think it makes it a bit easier to visualise it
[17:20] <Babs_> how should i interpret "%d\n"
[17:20] <Babs_> ?
[17:21] <fsphil> in the printf() functions, it's for printing a decimal number
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[17:21] <fsphil> it's the same as %i, but %d is a bit more sensible I think
[17:21] <g0pai_ian> I guess that it just formats the value as a decimal number followed by a linefeed
[17:22] <Babs_> hmmm. i don't understand %i
[17:22] <Babs_> or in fact %
[17:22] <Babs_> unless it concerns my bonus, in which case it is always followed by a too small a number
[17:22] <fsphil> the printf() functions take a format string, such as
[17:23] <fsphil> "The number is %d, and the string is %s."
[17:23] <fsphil> and replace the % bits with the contents of a variable for example
[17:23] <db_g6gzh> it's like a placeholder for the value you're printing, and the letter tells it what type of thing you're printing
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[17:23] <fsphil> like, printf("The variable i contains %d\n", i);
[17:24] <fsphil> the \n just tells it to go onto a new line
[17:24] <Babs_> and it automatically just pulls the decimal out of the argument after the comma in the printf function, in this case "value"
[17:24] <fsphil> yes
[17:25] <Babs_> ok. thanks
[17:25] <fsphil> brb, doggie walk
[17:25] <Babs_> i also need to read up on the vertical line thing
[17:25] <Babs_> but i can do that separately. thanks
[17:29] <aadamson> here vertical line thing as in "|"
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[17:30] <aadamson> The "|" by itself (without quotes) is a bitwise OR, the "||" (without quotes) is a logical OR
[17:30] <aadamson> if that's what you are referencing
[17:30] <aadamson> http://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B
[17:30] Lunar_Lander (~kevin@p5488B584.dip0.t-ipconnect.de) joined #highaltitude.
[17:32] <mauhen> recieved my first HAB signal today from G-02
[17:32] <Upu> seems a few people have recieved for the first time today congrats
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[17:33] Hoogvlieger (~Hoogvlieg@ip41-37-211-87.adsl2.static.versatel.nl) joined #highaltitude.
[17:33] <aadamson> fyi, I rousted the troups oven on the GPSL list in the us over the last few days :)... this morning when I saw a balloon up and functional I sent a note to the list... some came on as a result of that, but known who all
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[17:34] <db_g6gzh> Why are all the Dutch receivers crammed into one small area? 8-)
[17:35] <db_g6gzh> G-02 is still not a bad signal on the horizon but my power monitors are giving it a hard time
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[17:37] <db_g6gzh> FEC for just one or two characters per string would work wonders
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[17:40] <Babs_> exactly
[17:41] DL7AD (~quassel@p5B096CA0.dip0.t-ipconnect.de) joined #highaltitude.
[17:41] <DL7AD> evening
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[17:46] <Maxell> hai
[17:46] <Maxell> db_g6gzh: hehe because we informed each other?
[17:46] <Maxell> And because there are half a million people living in the hague alone
[17:47] <Maxell> so even more if you count in eveything else with it.
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[17:51] <db_g6gzh> Maxell: OK PE2G looks lonely over on the other side 8-)
[17:52] <fsphil> Babs_: the | is an OR, which I'm using simply to combine two values
[17:53] <Babs_> ok, so i understand the concept of an OR gate/statement
[17:53] <Babs_> but why is it purely additive to the string in this case?
[17:53] <fsphil> it's nothing to do with the string
[17:53] <Babs_> rather than comparing the bits in each of the two bytes
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[17:55] <fsphil> if I OR two bytes: 11100000 | 00000111 = 11100111
[17:56] <fsphil> the result is a combination of the two
[17:56] <fsphil> if a bit is 1 in either value, the result will have a 1
[17:57] <fsphil> https://en.wikipedia.org/wiki/Bitwise_operation#OR
[17:57] <fsphil> better example :)
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[17:59] <G8APZ> Still 26dB/n at 235km
[18:00] <G8APZ> There are not so many receivers in Belgium ......
[18:00] <G8APZ> G0TDJ I think we are getting close to losing it!
[18:01] <G8APZ> yes.. poor decodes now
[18:03] <G8APZ> Farewell G-02 bon voyage!
[18:03] <Reb-SM3ULC> G8APZ: antenna?
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[18:04] <G8APZ> Diamond X-50 on a versatower
[18:04] <G8APZ> I've had almost 890 packets sinch launch so not bad!!
[18:04] <G8APZ> over 4 hours of reception
[18:05] <G8APZ> The blue circle is pretty accurate for loss of sigs with this setup
[18:06] <G8APZ> the lower tone seems not to be so strong as the higher one
[18:06] <G8APZ> just got another decode!!
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[18:13] <Maxell> db_g6gzh: hehe we could invite him over but hes at a great location :)
[18:13] <Maxell> RevSpace still decoding strong at one degree above horizon
[18:13] <Maxell> ON6LS should shoot it down >:)
[18:13] <G8APZ> I notice that the auto freq correction isn't cutting in...and freq is very stable now
[18:14] <G8APZ> oh it is back !
[18:15] <G8APZ> still partial decodes at 250km
[18:15] <Maxell> ON6LS 23 elem vertical - can his rotor move fast enough to not lose the signal??? :O
[18:15] <G8APZ> Maxell yes for certain
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[18:16] <Maxell> I had a balloon fly over me so close it went silent
[18:16] <G8APZ> LOL
[18:16] <Maxell> about 200 meters south and up like 8 KMs
[18:16] <Lunar_Lander> xD
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[18:17] <G8APZ> ON6LS will get it off back and front so it won't need turning thru 180 degrees that fast!
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[18:19] <Maxell> G8APZ: http://i.sigio.nl/b5ab4679602e79f1a4a07791d9a51e27.png and http://i.sigio.nl/455d00cdb199a77cb09337de07459e77.png
[18:20] <Maxell> 2013-04-13 :)
[18:20] <G8APZ> Almost flew down Utrechtsebaan !!
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[18:20] <Maxell> :P
[18:21] <G8APZ> another decode at 261km
[18:22] <G8APZ> sending a NO GPS message again
[18:23] <G8APZ> batt 2.581v loop 1.723v xtal trim 96
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[18:33] <Babs_> sorry fsphil - ran out of juice
[18:33] <G8APZ> still partials on packet 995
[18:33] <G8APZ> 996
[18:34] <Maxell> NO GPS SIG - Sats in View = 0 - Batt Volts = 2.594V - Loop Volts = 1.716V - Xtal trim = 96
[18:34] <Maxell> NO GPS SIG - Sats in View = 0 - Batt Volts = 2.587V - Loop Volts = 1.719V - Xtal trim = 96
[18:34] <Maxell> NO GPS SIG - Sats in View = 0 - Batt Volts = 2.581V - Loop Volts = 1.723V - Xtal trim = 96
[18:34] <Maxell> NO GPS SIG - Sats in View = 0 - Batt Volts = 2.577V - Loop Volts = 1.723V - Xtal trim = 96
[18:34] <Maxell> NO GPS SIG - Sats in View = 0 - Batt Volts = 2.577V - Loop Volts = 1.726V - Xtal trim = 96
[18:34] <Babs_> so with the OR, is it that because you do a shift, you are actually doing the or operation not on 2 8 bits, but a 1010101100000000 and a 0000000010110101, for example
[18:34] <Maxell> a few mi0ns back
[18:35] <G8APZ> Maxell amazed I can still hear and see sigs... only just though! not decoding any more
[18:38] <G8APZ> packet 1013 partial
[18:40] <Maxell> 0,7 degrees horizon here still going just as strong as before
[18:41] <Maxell> PE2G: you are also doing nice DX
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[18:43] <G8APZ> packet 1030 green
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[18:46] <PE2G> Maxell: yes, I should have started earlier
[18:46] <PE2G> Never been inside the blue circle and all greens :)
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[18:48] <fsphil> Babs_: exactly
[18:48] <fsphil> it's OR'ing two values, one that contains bits 0-7, and the other that contains bits 8-15
[18:49] <fsphil> the shift puts then into the correct bit position
[18:49] <fsphil> and the OR combines them
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[18:50] <aadamson> hmm, so it lost its sat count, but its still beaconing valid lat/lons?
[18:50] <aadamson> g-02?
[18:51] <db_g6gzh> Maxell: I have visited your PTT in Den Haag but their offices were above the railway station so, with plane to Schiphol and then train, I was never really outside 8-)
[18:53] <Babs_> so if i shift 8 bits left, am i technically left with a 16 bit number, or just 8 bits identified in the top 8 2^16 positions?
[18:53] Nick change: MichaelC3 -> MichaelC
[18:55] <PE2G> NO GPS SIG - Sats in View = 3 - Batt Volts = 2.597V - Loop Volts = 1.735V - Xtal trim = 96
[18:56] <PE2G> NO GPS SIG - Sats in View = 0 - Batt Volts = 2.584V - Loop Volts = 1.739V - Xtal trim = 96
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[18:58] <Herman-PB0AHX> NO GPS SIG - Sats in View = 0 - Batt Volts = 2.577V - Loop Volts = 1.732V - Xtal trim = 96 NO GPS SIG - Sats in View = 0 - Batt Volts = 2.577V - Loop Volts = 1.723V - Xtal trim = 96
[18:58] <Herman-PB0AHX> agn
[18:58] <Herman-PB0AHX> ge all
[18:58] <mikestir> Babs_: the width of the variable is whatever it was declared as. if you shift bits off the end then you lose them
[18:58] <db_g6gzh> Babs_: if I remember right you have a 16 bit number being delivered as 2 8 bit values, so shifting the most significant of the 8 bit values left by 8 bits and ORing with the least significant restores it to being a 16 bit value
[18:59] <db_g6gzh> as long as the destination can hold 16 bits (as mikestir says)
[18:59] <mikestir> yes, so you'd have to cast the most significant byte to a uint16_t _before_ you shift it 8 to the left
[19:00] <mikestir> if you see what I mean?
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[19:03] <db_g6gzh> I think it was actually a signed 32 bit value being discussed a day or so back but the same principle applies (using int32_t)
[19:05] <Maxell> 0,5 degrtees elevation still OK :)
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[19:07] <Maxell> db_g6gzh: no time for sightseeing?:(
[19:07] <db_g6gzh> no, one day trip for a meeting so no time for anything really
[19:08] <Herman-PB0AHX> 180 degre's is bad for me strong qsb now here
[19:09] <happysat> $$$$$G-02,1109,19:08:52,50.210205,4.291410,4858,0,2.603,1.726,96*DF0D good signal overhere
[19:09] <pb1dft> doingjust fine here
[19:10] <Herman-PB0AHX> not here terry between ballom and me a big bilding named TU grgr hihihihi lol
[19:10] <Maxell> Intresting bump https://i.imgur.com/qAQWB9C.png
[19:11] <pb1dft> nice building ;)
[19:11] <Maxell> Herman-PB0AHX: are there still green decodes?
[19:11] <Herman-PB0AHX> yes maxell stil green
[19:11] <Maxell> we need to get an HAB reciever *on* that building :)
[19:11] <Maxell> Herman-PB0AHX: great!
[19:12] <pb1dft> Maxell: building roof is full ;)
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[19:26] <happysat> $$$$$G-02,1173,19:25:56,50.062122,4.488169,4860,0,2.603,1.719,96*A1FD
[19:26] <happysat> NO GPS SIG - Sats in View = 0 - Batt Volts o 2.603V - Loop Volts = 1.723V - Xtal trim = 96
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[19:28] <daveake> unhappysat
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[19:29] <DK6WX> GE together, could anybody pse tell me the qrg of G-02 ?!
[19:30] <pb1dft> 434125
[19:30] <PE2G> 434.124.3
[19:30] <DK6WX> tnx Frits, de Wolfgang
[19:31] <amell> is there a launch time for UKC yet?
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[19:34] <gb73d> spacelive ch4 now ISS stunning view
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[19:39] Nick change: Geoff-G8DHE_ -> Geoff-G8DHE-M
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[19:43] <SP9UOB-Tom> evening all
[19:44] <Upu> evening Tom
[19:44] <SP9UOB-Tom> evening Anthony
[19:44] <Lunar_Lander> hello everyone
[19:45] <Herman-PB0AHX> Hoi Tom
[19:45] <Herman-PB0AHX> hoi Lander
[19:45] Action: SP9UOB-Tom is just playing with 22F supercap - tracker is running 3.5, with gps off and transmitting only morse HI every 15 seconds
[19:46] <SP9UOB-Tom> at lowest possible power
[19:46] <SP9UOB-Tom> with GPS on - about 10 minutes from 22F
[19:47] <SP9UOB-Tom> 3.5 hours i mean
[19:47] <amell> researching antennas - they are expensive.
[19:47] <Upu> Somethign I looked at
[19:47] <Upu> Watson W-50
[19:48] <amell> even that is 60 quid.
[19:48] <amell> I have piles of steel rebar and a tig welder in the garage...
[19:49] <Upu> make a 1/4 wave
[19:49] <Upu> mount it on the roof
[19:49] <mikestir> use the tig rods though rather than the rebar :)
[19:49] <Upu> http://www.qsl.net/wrav/2m1_4.jpg 164mm
[19:50] <amell> A= 164mm? tiny
[19:50] <Upu> yup
[19:52] <Upu> or a j-pole
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[19:52] <Upu> http://myworldpage.net/jpole.htm
[19:52] <amell> what if lightening hits it?
[19:53] <Upu> your house sets on fire
[19:53] <Upu> what happens if it hits your TV antenna ?
[19:54] <amell> thats in the loft.
[19:54] <Upu> you an make a colinear actually
[19:54] <Upu> and stick it in a bit of pvp pipe
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[19:54] <amell> http://www.mds975.co.uk/Content/amateur_radio_antennas_05.html
[19:54] <mfa298> £60 is pretty cheap for an antenna (or any radio stuff)
[19:54] <Maxell> $$G-02,1277,19:54:22,49.802032,4.813056,4851,0,2.597,1.716,96*0D1D at -0.0 degrees
[19:54] <amell> looks nice
[19:55] <Upu> yeah £60 is actually quite cheap
[19:55] <mikestir> surely you can pick up a cheap X30 on ebay?
[19:55] <Upu> there is the W-30 / X-30 which is cheaper
[19:55] <mikestir> from people upgrading
[19:55] <Herman-PB0AHX> for a short time i am writing funcube than back for G-02
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[19:55] <Upu> http://www.ebay.co.uk/itm/X-30-N-2M-70CM-DUAL-BAND-COLLINEAR-ANTENNA-AERIAL-PMR-446-PMR446-/131126892872
[19:56] <gb73d> http://watchlive.channel4.com/
[19:57] <amell> is there anything useful on 6m?
[19:58] <mfa298> there can be interesting stuff, but a white stick antenna probably isn't much good for it.
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[19:59] <Maxell> wow, decodes keep coming
[19:59] <Maxell> sick DX :o
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[20:09] <amell> g-02 forecast to land in black sea? :)
[20:09] <fsphil> ah it's over france!
[20:09] <fsphil> it's in a rather nice float
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[20:10] <mikestir> lol. does anyone ever talk about anything other than ailments on 2m?
[20:11] <Geoff-G8DHE> http://360.g8dhe.net/HAB_Flights/2014_Flights/G-02_20140316/index.php?ind=3
[20:11] <mikestir> it's like a broadcast version of NHS direct
[20:11] <Joekull> Hi there! A UKHAS balloon heading to Switzerland! I have been waiting for that since I discovered HAB with PIE5 a long while back!
[20:11] <aadamson> mikestir, yeah, next will be what they had for dinner
[20:12] Action: Geoff-G8DHE sneakily re-broadcasts #highaltitude on 2m
[20:12] <amell> Joekull: We aim to please
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[20:13] <Upu> 434.123 Joekull
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[20:14] <Joekull> I am originally from Belgium, studied at the engineering school in Mons, and G-02 passed about 850m away from where I lived back then :)
[20:15] <UKC_THOMAS> <amell> is there a launch time for UKC yet? : Probably next week depending on weather
[20:15] <Geoff-G8DHE> Have you found a location yet ?
[20:15] <UKC_THOMAS> just testing equipment on tracker
[20:15] <amell> UKC_THOMAS: you could launch at Elsworth, Cambridgeshire?
[20:15] <amell> If you launch in kent, I won't receive it :)
[20:16] <UKC_THOMAS> I got offered an alternative location : https://groups.google.com/forum/#!topic/ukhas/dqDRqDq5XS0
[20:16] <UKC_THOMAS> in Ross-On-Wye
[20:16] <fsphil> mikestir: odd. normally such topics are reserved for the 80m band
[20:16] <amell> long drive. ask steve, rocket boy about els worth.
[20:17] <mikestir> fsphil: I wouldn't know about 80m - all I hear on there is the streetlights
[20:18] <Joekull> Go G-02, go, go, go, go, I am setting up my RTL-SDR and I may stay awake until 2 am if you continue to show an heading to home: Zurich :)
[20:18] <mfa298> mikestir: a few of us have been known to talk about HAB on 2m - when chasing
[20:20] <Willdude> If we had a quotes page, that should be on it mikestir
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[20:26] <Joekull> Is there a page online describing G-02?
[20:26] <Herman-PB0AHX> i lost G-02
[20:26] <amell> Joekull: Theres an email in the UKHAS google group about it
[20:27] <Joekull> Amell: found it, thanks!
[20:28] <fsphil> mikestir: at last, a use for HF noise
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[20:31] <Pascend-Jonny> when I am setting up dl-fldigi for the first time, what do I put in the boxes QTH and Locator???
[20:32] <craag> Pascend-Jonny: You don't need to put anything
[20:32] <amell> You need to fill out the DL client tab location though.
[20:32] <craag> Pascend-Jonny: The only settings you need are 'callsign' and the location boxes under 'DL Client'
[20:33] <craag> Make sure 'altitude' is not blank, put '0' in there
[20:33] <Willdude> craag, how many members do you have at SUWS?
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[20:33] <craag> Willdude: About 20
[20:33] <Willdude> Wow
[20:33] <Willdude> That's quite a few
[20:33] <Willdude> Were many of them hams before they came to the uni
[20:34] <craag> No, very few
[20:35] <craag> We're not very active though, been concentrating a lot on license examinatiosn recently, and paperwork for funding.
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[20:35] <craag> Should change with the nice weather though :)
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[20:40] <aadamson> Is there a repository for the flight document for a given flight that would have the specifics of them.? for example, anyone know the weight of the payload on G-02?
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[20:41] <Geoff-G8DHE> Sometimes a project is setup on the Wiki with the info or they have there own web pages http://ukhas.org.uk/frontpage:projects
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[20:51] <DK6WX> G-02 has lost GPS :-(((
[20:53] <DK6WX> OK again :-)
[20:53] <Upu> aadamson the Wiki has lots of data on it
[20:53] <Upu> http://ukhas.org.uk/general:flight_data
[20:53] <Upu> http://ukhas.org.uk/projects:microballoons:data
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[20:54] <Upu> thats normal DK6WX its been doing that for most of the flight
[20:54] <Upu> Is Graeme on line ?
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[20:57] <Upu> well if its 2 cells its on 1.2v per cell atm
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[20:59] <amell> I'm left wondering if the chase car in sydney got to the balloon before it disappeared over the pacific.
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[21:02] <amell> joeKull: where are you? not seeing your station yet.
[21:02] <aadamson> thanks Upu I was specifically interested in G-02, hence my question about it
[21:03] <aadamson> I wondered, give it's altitude, what it's payload weight was
[21:03] <Upu> Nothing I was interested as to the batteries in it
[21:03] <Upu> I'd guess 30g
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[21:03] <Upu> its a relatively low float
[21:03] <Upu> and the battery is reporting 2.555v so assuming 2 x AAA or possibly AA
[21:04] <aadamson> exactly hence my question, you guys with pico's and a single batt at around 15g are in the 7-9km range
[21:04] <Upu> if the battery gets to 2.2v I suspect its not going to last much longer
[21:04] <aadamson> and this one is much lower
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[21:04] <Upu> by the battery alone I think its 2 x AAA
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[21:04] <amell> I see G02 was launched from the Amazon warehouse in Peterborough :)
[21:04] <aadamson> well the voltage has been in the 3v range so it's either lipo or 2 cell
[21:05] <aadamson> unless it would be really light on a coin cell :)
[21:05] <Upu> nah they don't have enough juice
[21:05] <aadamson> oh, speaking of which , do you have to get a flight authority(not sure who it is) for all launches or just those over a certain size?
[21:06] <Upu> 2 meter sphere
[21:06] <aadamson> so if is's smaller you don't have to do the notam thing?
[21:06] <Upu> if at no point in the flight does any part of the balloon exit a 2 meter sphere
[21:06] <Upu> no notam needed
[21:06] <Upu> however that rules out any latex balloon
[21:06] <Upu> including the 100g's
[21:06] <aadamson> is G-02 a foil or latex
[21:07] <aadamson> at 2 mtrs... so approx 6ft... ok... makes sense
[21:07] <SIbot1> In real units: 6 ft = 1.83 m
[21:07] <aadamson> and I'm assuming given the float on G-02 it's a foil?
[21:07] <Upu> yeah its a foil
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[21:08] <RS010> NO GPS SIG - Savs in View = 0 - Ba|t Volts = 2.u6k - Loop Volts = 1.723V - Xtal trim = 96 NO GPS SIG - Sats in View = 0 - Batt Volts = 2.532V - Loop Volts = 1.719V - Xtal trim = 96 NO GPS SIG - Sats in View = 0 - Batt Volts = 2.526V - LoPVolts = 1.719V - Xtal trim = 96 NO GPS SIG - Sats in View = 0 - Batt Volts = 2.526V - Loop Volts = 1.716V - Xtal trim = 96 NO GPS SIG - Sats in View = 0 - Batt Volts = 2.526V - Loop Volts = 1.71
[21:08] <Geoff-G8DHE> Thats what he says here Pico https://groups.google.com/forum/#!topic/ukhas/AaLO9pGdRn0
[21:08] <aadamson> anyone on from the us that knows the specific requirements here for a notam or not?
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[21:09] <Dan-K2VOL> You should file one
[21:09] <VE6SRV> http://www.eoss.org/pubs/far_annotated.htm
[21:10] <Dan-K2VOL> but not legally required
[21:10] <aadamson> Dan-K2VOL, is that similar to rocketry, 24hr notice and call before flight to *open the notam*?
[21:11] <Dan-K2VOL> yes
[21:11] <VE6SRV> We get Transport Canada to file a NOTAM for our flights even though we fly exempt. Better to let people know what's going on before they encounter your payload.
[21:11] <Dan-K2VOL> call your local ATC tower or ARTCC center as well an hour before flight to notify of launch
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[21:13] <Upu> evening Dan
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[21:14] <Dan-K2VOL> Hi Upu
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[21:22] <Pascend-Ross> lol....the whole team is talking about rockets now....XD
[21:24] <Lunar_Lander> xD!
[21:25] <Pascend-Ross> There must be some rules more stringent than with balloons haha :P
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[21:25] Nick change: BitEvil -> SpeedEvil
[21:26] <DK6WX> G-02 : NO GPS SIG - Sats in View = 0 - Batt Volts = 2.513V - Loop Volts = 1.719V - Xtal trim = 96 NO GPS SIG - Sats in View = 0 - Batt Volts = 2.506V - Loop Volts = 1.716La?xl trim = 96
[21:26] <amell> rockets are easier to lose
[21:26] <DK6WX> frequecy is jumping
[21:26] <Upu> the code is correcting the frequency
[21:27] <DK6WX> sure HI
[21:27] <Upu> hence the jumps
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[21:27] <DK6WX> hope GPS comes on soon
[21:29] <Geoff-G8DHE> battery volts are dropping rapidly
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[21:32] <DK6WX> s/n here still 30db
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[21:44] <Willdude> Wow. I'm going to France on Wednesday and texts are cheaper there than they are here
[21:45] <DL7AD> good evening. are there informations about G-02?
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[21:48] <Geoff-G8DHE> Thats what he says here Pico https://groups.google.com/forum/#!topic/ukhas/AaLO9pGdRn0
[21:49] <Geoff-G8DHE> details, some, on G-02
[21:50] <DL7AD> hm okay.... but nobody knows about G-02 in france -.-
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[21:50] <DK6WX> qrg G-02: 434.1234
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[21:51] <Upu> who is RS010 anyway he seems to have access to a lot of remote stations
[21:52] <DL7AD> Upu: nope that are just Globaltuner stations ;) i know him
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[21:52] <Upu> I checked GT
[21:52] <Upu> unless I just picked free
[21:53] <Geoff-G8DHE> Whats with the station in Malyasia and the very odd last heard hours ?
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[22:03] <matt_> hi
[22:03] Nick change: matt_ -> Guest43428
[22:03] <Upu> evening
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[22:08] <Maxell> Geoff-G8DHE: lol, Last Contact: -4364 hours ago
[22:09] <Lunar_Lander> XD!
[22:09] <DK6WX> Quit: GN folks
[22:09] <Maxell> It's name could be "USM Aerostructures"
[22:09] <Maxell> DK6WX: bye
[22:10] <Geoff-G8DHE> It seems to be stuck there maybe the odd hours ?
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[22:10] <KT5WYX> hi all
[22:12] <KT5WYX> I think I've caused myself a little problem, and I'm not sure how to resolve it. My payload telemetry device is based on an arduino uno, I tied the hx-1 audio pin to the arduino's TX pin. Trying to modify the trackunio code, there are several ifdef values assuming that the audio pin is on pin3 or pin11 (because of trackuino hardware). Anyone here familiar enough with the code to help me put audio on pin 1?
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[22:14] <daveake> This is PWM right? You can't use pin 1 for PWM.
[22:15] <KT5WYX> can't the arduino TX pin be turned into a standard output pin with the right software setup?
[22:16] <daveake> Yes but not every pin can be a PWM pin
[22:17] <KT5WYX> Just read the overview on the arduino uni page - and I just read, only 6 pins can be PWM. So I need to modify this board. :-/
[22:17] <daveake> yup
[22:17] <KT5WYX> Oh that sux
[22:17] <KT5WYX> Oh well.
[22:18] <KT5WYX> That's what you get for home brewing without a full spec :)
[22:20] <Maxell> full spec? The arduino can't have hardware PWM on all pins
[22:20] <Maxell> thats something you check before you start soldering :P
[22:20] <KT5WYX> full spec - I failed to design
[22:20] <Maxell> hehe
[22:20] Action: Maxell has been there
[22:21] <daveake> I think we all have :)
[22:21] <Maxell> meanwhile in ssb sattalite transponder space: https://www.youtube.com/watch?v=KIKoHlIw0LA
[22:21] <KT5WYX> could be worse, it's only repositioning 1 wire, and it's a surface wire, not printed.
[22:22] <daveake> I once (I think I only did it once) etched a PCB where the pins on the DIL IC were mirrored
[22:22] <daveake> DId the obvious thing and bent all the pins through 180 degrees so it would work :)
[22:23] <kc2pit> Heh.
[22:24] Action: kc2pit may have learned a couple lessons that involve xacto work on traces and quite a few bits of 30ga wire.
[22:24] <craag> daveake: I've done that. More than once :P
[22:25] <fsphil> not sure you all should be admitting this
[22:25] <kc2pit> Let he among us whose first PCB was perfect cast the first hot soldering iron, or something.
[22:27] <fsphil> my first pcb only worked if you kept pressure on certain points
[22:27] <Lunar_Lander> strange
[22:27] <Lunar_Lander> why was that?
[22:27] <fsphil> really bad soldering
[22:27] <Lunar_Lander> oh
[22:28] <fsphil> combination of inexperience, rubbish iron and no flux
[22:28] <fsphil> but that it worked at all was good :)
[22:28] <Lunar_Lander> yea :)
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[22:30] <fsphil> the worst bit of soldering was the wires into the 25-pin D plug this used
[22:31] <KT5WYX> ok, hardware fixed, time to try this again :)
[22:32] <Geoff-G8DHE> G-02 at 660Kms travelled http://360.g8dhe.net/HAB_Flights/2014_Flights/G-02_20140316/index.php?ind=4
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[22:40] <amell> I thought joekull was going to pick up G-02 in Zurich.
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[22:46] <DL7AD> rofl... netsplit
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[22:46] <DL7AD> btw Geoff-G8DHE do you know what the name Geoff sounds like in german? ^^
[22:47] <Geoff-G8DHE> I hate to think ;-)
[22:47] <DL7AD> a request to go offline ;)
[22:47] <amell> on space near.us what does the green ring represent? I assume blue ring is horizon
[22:47] <DL7AD> amell: green 5°-horizon and blue 0° horizon
[22:48] <amell> ta
[22:48] <Geoff-G8DHE> green is 5 degree horizon
[22:48] <Geoff-G8DHE> hover over it
[22:48] <amell> hover over doesn't do anything in safari
[22:49] <Geoff-G8DHE> Ah yes it does vary
[22:49] <amell> been looking at everyones antennas. X30 in hague was picking up G02 in newmarket, so I think I'll go with an X30 loft mount
[22:50] <Geoff-G8DHE> Hope it doesn't rain on you then ;-)
[22:50] <amell> roof mount - don't like heights so...
[22:51] <Geoff-G8DHE> can you not put it on a pole up the side of the house ?
[22:52] <amell> what strap to the chimney? 8m high.
[22:52] <Geoff-G8DHE> No up the side of the house not on chimmney
[22:53] <amell> is that good enough?
[22:53] <Geoff-G8DHE> My original aerials were just on a 20m scaffold pole which swung down, Ive since replaced with a more elobrate setup but thats was just fe ease
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[22:54] <Geoff-G8DHE> depends on how high roof line is provided the aerial is above the roof line then no need to go any higher
[22:54] <amell> i could do that actually. hmm.
[22:54] <mikestir> amell: I have an X30 on a pole on the back wall - it doesn't even really clear the roofline and it still works better than in the loft
[22:55] <amell> what did you use for brackets?
[22:55] <mikestir> job for the summer is to move it up to the chimney
[22:55] <Geoff-G8DHE> sxtandard T and K
[22:55] <mikestir> 24" T+K brackets
[22:55] <daveake> IMO #1 get it outside #2 get it high #3 use decent cable or mast preamp #4 choice of aerial
[22:55] <Upu> I took down my TV antenna and put a Watson in its place
[22:55] <daveake> good plan :)
[22:56] <amell> i hired a cherry picker to remove my TV and FM antenna
[22:56] <amell> good fun.
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[22:57] <Geoff-G8DHE> Yup still the same T and K that the tilt * telescopic uses, orginal was just a pole I pushed up to full hieght http://360.g8dhe.net/default.php?80820
[22:57] <Upu> here amell this is what you need : https://dl.dropboxusercontent.com/u/63720513/Images/HAM/Rotator/IMG_0796.JPG
[22:57] <amell> holy crap that is an eyesore.
[22:57] <amell> will definitely fail WAF.
[22:57] <Upu> lol
[22:58] <Upu> my wife doesn't mind it
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[22:58] <amell> it rotates the dipole?
[22:59] <daveake> My house still has the hay-loft stairs (it used to be a barn) so easy to get up near the roof :)
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[22:59] <Upu> yagi
[22:59] <Upu> and yes
[22:59] Action: mikestir makes mental note to make sure next house has a gable end
[23:00] <Upu> https://dl.dropboxusercontent.com/u/63720513/Images/HAB/watson.jpg
[23:00] <Upu> that was the Watson W-50
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[23:00] <daveake> Looks much better now Upu :)
[23:00] <Upu> sure does
[23:00] <Upu> eye sore my ass
[23:00] <Upu> beauty is in the eye of the beholder
[23:00] <Upu> :)
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[23:01] <amell> Geoff appears to have a winch pole
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[23:01] <Geoff-G8DHE> It does now, but original was justa pole that slide up down the two brackets, started low and then grew over the first year as I watered it
[23:02] <Upu> Amell https://www.youtube.com/watch?v=L2Gwm530L3M
[23:03] <Geoff-G8DHE> never seen brackets quite that shape before Upu were they custom ?
[23:03] <Upu> yeah
[23:03] <Upu> I have some spares if you want them
[23:04] <Upu> had to get some custom made as they didn't clear the guttering
[23:04] <Geoff-G8DHE> Nope my current ones are fine!
[23:04] <Upu> big micks brackets or something
[23:04] <Upu> http://big-marts-brackets.yolasite.com/
[23:04] <Upu> he'll make anything you want
[23:05] <Geoff-G8DHE> I used to have a third bracket around the window at the top of mine which was custom, you can still see the holes!
[23:06] <Geoff-G8DHE> but only because the pole didn't reach ground level.
[23:07] <Upu> right night all
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[23:07] <daveake> nn
[23:08] <Geoff-G8DHE> cheerw
[23:08] <Geoff-G8DHE> *s
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[23:15] <Joekull> Hi there. My RTLSDR + SDR# + dl-fldigi seems up and running. But it's going to be at least two hours I guess until I can receive G-02...
[23:17] <malgar> Joekull: where are you?
[23:17] <Geoff-G8DHE> Are you not already in range ? Or do you have obstructions to the NW ?
[23:17] <Joekull> Zurich, Switzerland
[23:17] <malgar> Geoff-G8DHE: are you the owner of G-02?
[23:18] <Geoff-G8DHE> No thats G0WXI Graeme
[23:19] <Joekull> I am not a radio amateur (yet), I am an absolute beginner. I only have the telescopic antenna I go with my RTL dongle
[23:20] <Geoff-G8DHE> Ah yes it might need to get a bit closer then! Is it just the little short one about 7cms ?
[23:20] <amell> joekull: I had the same. I learnt my lesson ;)
[23:21] <Joekull> At least, I am full of enthusiasm :)
[23:21] <Geoff-G8DHE> Slide a small bit of metal tubing over it length about 15-17cms would help.
[23:21] <Joekull> Yes, about 7cm undeploed. I deployed it to about 17 cm
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[23:21] <malgar> Geoff-G8DHE: what's the speed of the balloon?
[23:21] <amell> joekull: is it outside?
[23:21] <malgar> my location would be near the blue circle
[23:22] <Joekull> yes, on my balcony. I am in the center on Zurich, lots of RF noise unfortunately
[23:22] <Geoff-G8DHE> http://x-f.lv/dev/habitat-graphs/payload/68ac43031ea5e92ba0bb0c739cca5831#g/_speed for the speed etc.
[23:23] <Geoff-G8DHE> Battery is fading fast now http://x-f.lv/dev/habitat-graphs/payload/68ac43031ea5e92ba0bb0c739cca5831#g/_speed,altitude,battery
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[23:25] <amell> joekull: hope you hear it before the battery dies.
[23:26] <Joekull> fingers crossed :)
[23:27] <malgar> do you think that it will reach italy before die?
[23:27] <Geoff-G8DHE> I think 2.2v foe the battery might be its limit
[23:29] <amell> malgar: where are you?
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[23:29] <malgar> northern italy
[23:30] <amell> who knows.
[23:30] <amell> Now if this had a solar panel...
[23:32] <Joekull> On the "HAB telemetry visualisation" page, can I see on what reception parameters (i.e. freq, etc) the last data points have been received?
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[23:33] <Geoff-G8DHE> Joekull, You do have LoS see http://360.g8dhe.net/HAB_Flights/2014_Flights/G-02_20140316/index.php?ind=5
[23:34] <Geoff-G8DHE> Thats from the bridge Quaibrucke
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[23:35] <Geoff-G8DHE> No the freq 434.125 possibly a little lower
[23:36] <Joekull> I did not put in my exact location... I just looked-up zurich in google maps to find my long/lat. But I am about 2 km south of Quaibrucke
[23:37] <Geoff-G8DHE> East or West side of lake ?
[23:39] <Geoff-G8DHE> Move to the East side, butteer takeoff for the aerial ;-)
[23:39] <Geoff-G8DHE> Better
[23:41] <amell> yay. I just bought a W30 on ebay
[23:41] <Geoff-G8DHE> South of Belvoir on the West side gets to be a problem
[23:42] <Geoff-G8DHE> Now a 20m thick walled scafold pole
[23:42] <amell> scaffold possibly a bit extreme
[23:42] <Geoff-G8DHE> Nah a single pole is hardly visible
[23:42] <Geoff-G8DHE> paint it brick coloured and it blends in ;-)
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[23:43] <malgar> when will it be above Milan in your opinion?
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[23:43] <Joekull> Updated my position in dl-fldigi
[23:43] <amell> scaffold pole is too heavy
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[23:44] <Joekull> I should look for an intermittent trace on the waterfall, right?
[23:46] <KT5WYX> ? Arduino Uno, if the port is configured and I telnet to the com port of the usb that the uno is sat on, Serial.println("something"); should work to send a message up to the telnet (putty) right?
[23:47] <Geoff-G8DHE> The cross is your location eye Altitude is 567m ground is 453m http://360.g8dhe.net/HAB_Flights/2014_Flights/G-02_20140316/Zurich_LoS_2347.jpg
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[23:49] <Geoff-G8DHE> Two parallel lines 470Hz apart
[23:49] <g0pai_ian> Scaffold pole or thick walled aluminium pole,
[23:50] <amell> ally pole will do. no sense in breaking my neck.
[23:50] <amell> looking for RG213 now.
[23:51] <malgar> i'll wake up in 5 hours hoping that G02 will still work
[23:51] <malgar> bye
[23:51] <Geoff-G8DHE> Goodnight
[23:51] <DL7AD> Geoff-G8DHE: gn
[23:51] <Geoff-G8DHE> gn
[23:51] <DL7AD> no im not going to bed.
[23:51] <amell> joekull: nothing yet?
[23:53] <amell> malgar: 5 hours? probably miss it?
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[23:55] <Geoff-G8DHE> I think I need to! See you soon AFK
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[23:57] <DL7AD> amell: where are you coming from?
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[23:58] <Joekull> no.... I haven't "discovered" its signal yet
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[23:59] Nick change: Geoff-G8DHE_ -> Geoff-G8DHE-M
[00:00] --- Mon Mar 17 2014