highaltitude.log.20150726

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[00:55] <SpacenearUS> New vehicle on the map: 03KI6VBK-11 - 12http://tracker.habhub.org/#!qm=All&q=KI6VBK-11
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[05:01] <SpacenearUS> New vehicle on the map: 03DO6SOM-8 - 12http://tracker.habhub.org/#!qm=All&q=DO6SOM-8
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[05:08] -:#highaltitude- [freenode-info] if you're at a conference and other people are having trouble connecting, please mention it to staff: http://freenode.net/faq.shtml#gettinghelp
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[06:31] <SpacenearUS> New vehicle on the map: 03DC2EH-9 - 12http://tracker.habhub.org/#!qm=All&q=DC2EH-9
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[07:49] <KM4FSW> hello, does anyone know how to port balloon tracking information from WSPRnet.org to HABhub?
[07:49] <KM4FSW> like the PS flights? HB9FDK is also on WSPR
[07:52] <jcoxon> KM4FSW, i think the PS flights used a custom script
[07:52] <jcoxon> not sure its actually built into habhub
[07:54] <KM4FSW> ok does it require JT9 format?
[07:58] <Darkside> its all custom KM4FSW
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[07:59] <Darkside> KM4FSW: as in, VK5YT has a custom version of the WSPR and JT65 software which pushes the data into habhub
[07:59] <Darkside> VK3YT that should be..
[08:00] <Darkside> and i'm guessing other flights that have flown WSPR payloads would have written custom scripts to do it
[08:01] <KM4FSW> ok thanks guys, so it sounds like no way to map it on habhub, just curious
[08:02] <Darkside> no 'turnkey' solution, no
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[08:36] <DL1SGP> morning folks :)
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[10:06] <TROUPYS> Any tips on a home made radar reflector? CD's are not working out well just now
[10:07] <edmoore> do you need one?
[10:07] <edmoore> no one bothers usually, there's little utility to a small hab being tracked by radar
[10:07] <lz1dev> are you lifting your house with balloons?
[10:07] <edmoore> so unless your legally required to have one wherever you are, i wouldn't bother
[10:08] <TROUPYS> Ok, grand, thanks I guess I was just googling before and spotted radar reflectors but if you dont think its worth it then I will not bother
[10:08] <edmoore> not at all worth it
[10:10] <TROUPYS> One last bit of advice, for the mobile tracker I have a basic dongle but have the airspy at home. I have a mag mount antenna for chase signal but would you recommend a Yagi one to connect once its landed and i get closer?
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[10:17] <SpacenearUS> New vehicle on the map: 03RAJ-3 - 12http://tracker.habhub.org/#!qm=All&q=RAJ-3
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[10:39] <Ian_> Yes, It's a good option to have a yagi available in that last mile/kilometer in case you need to direction find the package. 5 or 6 elements should be more than adequate. No point in having a monster :)
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[10:50] <TROUPYS> Thanks for the note, found a smaller one for 434 fq on RS components that wont break the budget
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[12:07] <Lunar_Lander> hello
[12:30] <Maxell> Hello there
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[12:44] <SpacenearUS> New position from 03K6RPT-12 after 0311 hours silence - 12http://tracker.habhub.org/#!qm=All&q=K6RPT-12
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[13:58] <SpacenearUS> New position from 03M0SBU-11 after 0319 hours silence - 12http://tracker.habhub.org/#!qm=All&q=M0SBU-11
[14:08] <SA6BSS> ha, it started agin, listend for i tall day, but no sound
[14:19] <richardeoin> Thanks for listening SA6BSS - maybe it passed you before it woke up?
[14:19] <SA6BSS> yes I sopes so
[14:19] <SA6BSS> *suppose
[14:22] <richardeoin> I've been testing an identical battery in my freezer here
[14:22] <richardeoin> the battery does not like getting cold :(
[14:23] <richardeoin> aprs was disabled over sweden and finland btw
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[14:25] <richardeoin> there's a little backlog coming through SA6BSS. got one point for 7am utc this morning
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[14:49] <SA6BSS> ok, was up to 2am local and listend and back at 10am local, thats 8utc . looks like it will travel and come down over alaska
[14:51] <SA6BSS> richardeoin: can you just short describe how you moded the bloodpessure meter used for prestretch balloon
[14:52] <SA6BSS> http://predict.habhub.org/#!/uuid=b530eafb5944c3d58e6e207d6fedd5a2462e1411
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[15:06] <SpacenearUS> New vehicle on the map: 03W2CXM-11 - 12http://tracker.habhub.org/#!qm=All&q=W2CXM-11
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[17:05] <hiflyer> Hi guys, I've just come back to my project and i can't seem to get the ntx2b working. It worked perfectly before (using a Serial port). I'm sure the settings are right in dl-fldigi (300 baud, 7 bits, no parity, 2 stop bits) but I just get seemingly random strings decoded. I've been trying for hours, any ideas?
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[17:12] <daveake> Try clicking the Rv button near the bottom-right of dl-fldigi. If that fixes it great; if not switch it back off
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[17:15] <SpacenearUS> New vehicle on the map: 03DO2EIM-1 - 12http://tracker.habhub.org/#!qm=All&q=DO2EIM-1
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[17:23] <hiflyer> no luck
[17:23] <hiflyer> is there a chance I've somehow broken the ntx2b?
[17:24] <mattbrejza> pics?
[17:24] <daveake> doubt it
[17:24] <mattbrejza> of fldigi
[17:24] <daveake> post a screenshot
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[17:42] <hiflyer> http://i.imgur.com/O4XFzO7.png
[17:45] <qyx_> this doesn't look like FSK signal
[17:46] <mattbrejza> can you probe the signal into the ntx2
[17:46] <mattbrejza> also whats the power supply for the module>
[17:46] <richardeoin> UBSEDS9/M0SBU-11 closing in on the artic circle - about 50km to go now
[17:48] <hiflyer> usb power supply, so annoying everything was working perfectly and now its all gone to shit
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[17:49] <mattbrejza> are you using breadboard? something come loose?
[17:50] <hiflyer> nah, i soldered everything on to a stripboard
[17:50] <hiflyer> i'll buy another ntx2b and see if that works
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[17:50] <mattbrejza> i doubt its broken
[17:51] <mattbrejza> theres still a carrier
[17:51] <hiflyer> do i need to do anything with the red bars at the bottom which you can move?
[17:51] <mattbrejza> has it worked since being on stripboard?
[17:51] <hiflyer> yeh worked perfectly on the stripboard a month ago
[17:52] <mattbrejza> if the micro isnt putting a signal into the radio do y ou get a nice clean carrier?
[17:53] <hiflyer> yeh
[17:56] <mattbrejza> check the resistor network then
[17:57] <mattbrejza> have the micro drive the pin high-low very slowly, then measure voltages on the radio input with a multimeter
[17:57] <mattbrejza> and you should see the frequency go high-low slowly on flidgi
[18:08] <Lunar_Lander> dumb question maybe
[18:08] <Lunar_Lander> do you use the same code as before?
[18:12] Nick change: DrLuke__ -> DrLuke
[18:12] <Ian_> Maybe not . . . you've obviously trod this path before LL :)
[18:13] <Lunar_Lander> yes, I once had two lines in dl-fldigi but very close together
[18:14] <Lunar_Lander> and that was because the driving pin was not defined as an output
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[19:47] <SpacenearUS> New vehicle on the map: 03wali_chase - 12http://tracker.habhub.org/#!qm=All&q=wali_chase
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[20:02] <hiflyer> thanks for everyone's help earlier, the good news is that (as others suspected) the ntx2b is still working perfectly. Everything transmits fine when using the code here (https://ukhas.org.uk/guides:linkingarduinotontx2 - adapter slightly as I'm using resistors to control the voltage shift) but when using serial at 300 baud it seems to stop working (this did work fine before). Not sure what's going on!
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[20:15] <hiflyer_> any ideas?
[20:16] <edmoore> so let's isolate the problem right down to something reproduceable hiflyer_
[20:16] <edmoore> you can just change one single line of code to go from 50 to 300 baud and that goes from working to not working?
[20:16] <edmoore> and can you elaborate on the nature of 'not working' - no modulation at all, modulation but with garbled decodes?
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[20:17] <hiflyer_> sorry i wasn't very clear, for the 50 baud I'm using the code here https://ukhas.org.uk/guides:linkingarduinotontx2 whilst with 300 baud I'm just using "Serial3.begin(SERIAL_7N2,300); Serial3.print ("testing 123")"
[20:19] <hiflyer_> ah
[20:20] <hiflyer_> sorry i wasn't very clear, for the 50 baud I'm using the code here https://ukhas.org.uk/guides:linkingarduinotontx2 whilst with 300 baud I'm just using "Serial3.begin(SERIAL_7N2,300); Serial3.print ("testing 123")"
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[20:22] <Laurenceb__> edmoore: offtopic... have you ever looked at precision temperature measurement with thermistors?
[20:23] <hiflyer> apologies - appear to keep timing out on here
[20:23] <Laurenceb__> I'm looking for matlab/whatever models of calibration drift, ageing etc
[20:24] <hiflyer> sorry i wasn't very clear, for the 50 baud I'm using the code here https://ukhas.org.uk/guides:linkingarduinotontx2 whilst with 300 baud I'm just using "Serial3.begin(SERIAL_7N2,300); Serial3.print ("testing 123")"
[20:25] <edmoore> hiflyer: does that produce any receivable signal? is it that something is happeneing, but just the wrong thing
[20:25] <edmoore> or is it that nothing at all is happening?
[20:25] <edmoore> Laurenceb__: i don't know much about thermistor stability
[20:25] <edmoore> almost all the aging stuff i've been doing is with thermocouples
[20:25] <Laurenceb__> ah i see
[20:26] <edmoore> i.e. using type Ts insteak of Ks cos aging
[20:26] <edmoore> or just pt100 which don't really age
[20:26] <Laurenceb__> I knew you did lots of instrumentation
[20:26] <Laurenceb__> yeah thats a point
[20:26] <Laurenceb__> but itd need four wire arrangement
[20:26] <edmoore> yep
[20:26] <Laurenceb__> I was looking at thermistors + i2c eeprom with cal data
[20:26] <Laurenceb__> but i should check whats cheapest
[20:26] <edmoore> or thermocouples
[20:26] <edmoore> depends on application i guess
[20:27] <edmoore> i do like thermocouples
[20:27] <Laurenceb__> yeah, but it has to be on disposable flexi pcb
[20:27] <edmoore> o
[20:27] <edmoore> don't use that then
[20:27] <Laurenceb__> its for my coupled UKF/Finite element model thingy
[20:27] <edmoore> you can get 0805 PT100s
[20:27] <edmoore> do the 4 wires as traces
[20:28] <Laurenceb__> yeah
[20:28] <Laurenceb__> I need a low cost array with very low offsets between sensors, <10mK
[20:28] <Laurenceb__> i guess that suggests thermocouples, but thats annoying to manufacture
[20:29] <hiflyer> I definitely get a signal with a rtty 'sound' (i have to change the frequency a little) but no text is appearing
[20:30] <edmoore> it might just be inverted
[20:30] <edmoore> have you hit 'Rv' on the bottom right of dl-fldigi?
[20:30] <edmoore> hiflyer: ^
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[20:33] <edmoore> and generally double-check that fldigi is set up to receive rtty of that specification
[20:34] <edmoore> Laurenceb__: 10mK is tough
[20:34] <Laurenceb__> yes
[20:34] <edmoore> i think you're in pt100 territory there
[20:34] <Laurenceb__> I've seen <5mK claimed for calibrated thermistors
[20:34] <edmoore> and good physical shielding against air currents and so on
[20:35] <Laurenceb__> yes theres a blanket over the top
[20:35] <Laurenceb__> www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA294353
[20:37] <daveake> hiflyer is the circuit the same as for the 50-baud code ? i.e. same resistor network aame values ?
[20:37] <Laurenceb__> they get some very good results in there
[20:38] <Laurenceb__> page 50
[20:38] <edmoore> apols gtg
[20:41] <SpeedEvil> Laurenceb__: I wonder about FLIR
[20:42] <SpeedEvil> with averaging, and rotating the FLIR
[20:42] <Laurenceb__> it needs to be under a blanket
[20:42] <SpeedEvil> Ah
[20:42] <SpeedEvil> I guess for 4mk, you're going to hit pain like 4-wire needed for everything
[20:43] <SpeedEvil> And the precise alloy of all your connectors actually mattering
[20:43] <Laurenceb__> hmm
[20:43] <Laurenceb__> maybe type T thermocouples
[20:44] <Laurenceb__> using soldered jumper wires for one side
[20:44] <hiflyer> daveake: yeh same circuit (strange thing is that both the 50 baud and 300 baud was working perfectly a month ago - now only the 500 baud seems to work)
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[20:45] <Laurenceb__> http://wires.co.uk/acatalog/cn_bare.html
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[20:46] <daveake> change the serial code to use 50 baud, with exactly the same settings as your exiting 50 baud code
[20:47] <Laurenceb__> but about 3 orders of magniture smaller signal
[20:47] <daveake> existing
[20:47] <Laurenceb__> *magnitude
[20:47] <hiflyer> arduino serial doesn't support 50 baud
[20:50] <daveake> check in the Arduino "IDE" that you've got the correct board/speed selected
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[20:53] <hiflyer> yeh, the arduino mega is selected
[20:54] <hiflyer> is there any reason I'd need to change the frequency just because I've changed the baud?
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[21:01] <hiflyer> i don't get any text coming through at all at 300 baud
[21:01] <daveake> Electrically it should be the same, so if the frequency is changing then the circuit is different
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[21:04] <hiflyer> hmm
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[21:08] <daveake> The frequency is solely controlled by the voltage on the NTX2B's signal pin
[21:08] <daveake> So if the frequency is changing, that's changing
[21:09] <daveake> Which, as you told me you had the same circuit for 50 baud and 300, shouldn't be happening
[21:09] <hiflyer> it just seems that I get a stronger signal at a different frequency at 300 baud (although nothing appears seems to be getting decoded)
[21:10] <daveake> So when you change from 50 to 300, you're tuning in to a different freuency?
[21:11] <hiflyer> yes, the signal is very weak when I go from 50 to 300 so I alter the frequency to get a stronger signal (which still doesn't work)
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[21:12] <daveake> I doubt you're tuned in correctly then
[21:13] Nick change: fl_0 -> fl_0|afk
[21:13] <daveake> Do you have aerials on both tx and rx ?
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[21:15] <hiflyer> only on the rx
[21:17] <hiflyer> 50 baud works but its pretty temperamental - i have to keep changing the frequency to get it to decode properly
[21:18] <daveake> screenshot please
[21:18] <daveake> 50 baud should be very reliable
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[21:26] <hiflyer> http://i.imgur.com/ICqGCN8.png
[21:27] <Upu> Firstly use dl-fldigi HAB mode
[21:27] <Upu> different icon
[21:27] <Upu> Secondly those red "cursors" on the water fall at the bottom need to be over the 2 lines on the water fall
[21:28] <Upu> restart with dl-fldigi hab mode firstr
[21:28] <Upu> lets go from there
[21:28] <daveake> and your audio shift in dl-fldigi (425 I think) doesn't match the signal (500)
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[21:37] <hiflyer> ah moving the cursors seemed to help, not sure what you mean about the signal being 500?
[21:37] <Upu> screen shot where you're at now in dl-fldigi hab mode
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[21:40] <hiflyer> http://i.imgur.com/XyVDpF8.png
[21:41] <Upu> ok so your're pretty much there
[21:41] <Upu> move the "cursor" in SDRSharp so the signal is in the middle of the watrer fall not near the edge
[21:41] <Upu> in SDRsharp change bandwidth to 3000 (currently 2400)
[21:42] <Upu> you currently have the shift (distance between the two tones) in dl-fldigi set to 425hz , its fractionally larger than that
[21:43] <Upu> go to (in dl-fldigi) Op-Mode -> RTTY -> Shift set it to custom and fiddle it until the red cursors are exactly in the middle of the red signal bars
[21:47] <hiflyer> ah more like 450
[21:48] <Upu> yep
[21:50] <hiflyer> so 50 baud is working consistently now, should I have to change anything for 300 baud?
[21:50] <hiflyer> apart from the baud rate obviously
[21:51] <gonzo_nb> you may want to increase the filter bandwidth in the rtty modem setup
[21:51] <gonzo_nb> I suggest you set it to at least equal to the baud rate
[21:52] <Upu> clue : press auto
[21:53] <gonzo_nb> is there an auto setup in dl-fldigi? apart from the usto config that uses the payload doc?
[21:53] <Upu> on the bandwidth
[21:53] <gonzo_nb> ah, not seen that
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[21:54] <Upu> little auto check box next to ti
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[21:54] <hiflyer> yeh auto is on
[21:54] <Upu> congrats you're decoding
[21:55] <hiflyer> and 300 baud... http://i.imgur.com/SoG9NfI.png
[21:56] <gonzo_nb> does that auto adjust on the snr, on the fly? or just based on the baud rate?
[21:56] <Upu> you're not on the signal lines
[21:58] <hiflyer> I can only see one red signal bar this time
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[22:06] <hiflyer> http://i.imgur.com/gkWhgRC.png
[22:07] <fsphil> gonzo_nb: just based on rate
[22:07] <fsphil> or manually
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[22:12] <hiflyer> ^ is everything correct?
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[22:23] <gonzo_nb> rr fsphil, I tend to adjust the bw depending on the sig strength. narrow gets the best decode, but can lose afc lock with a fading drifty sig
[22:27] <amell> hiflyer: you only seem to have one signal bar. try widening the USB bandwidth in SDR
[22:28] <amell> or maybe there are two, ytou can use the zoom button (its labelled x1 in your image)
[22:28] <amell> oh he left. pah.
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[23:17] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12http://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
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[00:00] --- Mon Jul 27 2015