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Date: Wed, 11 Oct 2017 11:30:01 -0230
From: Joe Craig <jcraig@mun.ca>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: VO1NA in Todmorden on 8270 Hz - also in Amberg?
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Thanks Paul for the encouraging report. The daytime S/N on the 8th was 
the best so far, wasn't it?

A confirmation at DL0AO (and KL7) will be a significant achievement for 
this tiny signal. Thanks for setting up the RX and your updates, Markus.

The next step is to reduce the QRI on the carrier. At the moment, the 
neo7 is talking (NMEA) to the raspi3 via max232/rs232-usb converter and 
the raspi3 is ready to send commands the neo7. Doing a cat file.dat > 
dev/ttyUSB0 results data appearing at the voltage clamp placed across 
the max232 TTL output.  This will eventually be connected to the RX 
terminal of the neo7.  It seems to me that if the correct commands are 
put in file.dat, the neo7 will provide 10 MHz to clock the dds.  Another 
command is needed to restore the pps to continue experimenting with SL 
eventually.

Please accept my apologies for being inept in this area. Being 
disciplined and stable are challenging for some!

73's
Joe VO1NA


On 2017-10-11 08:35, Markus Vester wrote:
> Hi Joe,
> 
> we've now also set one of the DL0AO 9.3 uHz instances from 6470 back
> to 8270. The image will be updated tomorrow, but it already seems to
> show some activity around Oct 4th, albeit not yet statistically
> significant. The 30 hour integration may suffer from day-night phase
> differences. But once you have GPS lock working, we may try stacking
> days and nights separately using FFT export data.
> 
> Best regards,
> Markus (DF6NM)
> 
> -----Ursprüngliche Mitteilung-----
> Von: jcraig <jcraig@mun.ca>
> An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
> Verschickt: Mi, 11. Okt 2017 0:08
> Betreff: Re: LF: VO1NA in Todmorden on 8270 Hz - also in Amberg?
> 
> Hello Markus,
> 
> Yes, the TX is QRV 10 uW on 8370.00709 Hz +- QRI a few ppb and has
> been on
> since 4 October. This is exciting news. Let's hope it appears again.
> 
> Best Regards
> Joe
> 
> On Tue, 10 Oct 2017, Markus Vester wrote:
> 
>> Joe, have you also been on VLF yesterday Oct 9th? There seems to be
> a small dash on your frequency on the DL0AO grabber (EW earth-loop,
> 31.4 uHz, 1 hour scroll).
>> http://df6nm.bplaced.net/dl0ao/VLFgrabber/vlfgrabber_dl0ao_test.htm
>> (unfortunately the 31 uHz instance has been restarted today but the
> dash is still visible).
>> 
>> Best 73,
>> Markus
>> 
>>