Re: LF: EbNaut beaconing on LF

[Markus Vester <markusvester@aol.com>]

 
Hi Domenico,

as far as I know Joe's not using the pilot for SpecLab frequency lock, because we found that the level required for this purpose would be so large that it affects SNR. But the weak tone is still useful for a-posteriori determination of his slightly variable RX-LO frequency. 

Have you looked for the Loran lines in the files? Their frequencies are absolutely accurate. If you can find and use them, the pilot injection would become unnecessary. At least as long as the eLoran test transmissions from Wildwood remain on air...

Good luck,
Markus 


-----Ursprüngliche Mitteilung-----
Von: Domenico IZ7SLZ <iz7slz.domenico@gmail.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 11. Feb 2017 12:25
Betreff: Re: LF: EbNaut beaconing on LF

Hello Joe, LF

Analisys is started here but i have some problem to found the pilot tone.

I found a  carrier at 137500 + 0.097 Hz with a good amplitude on 021000043.txt file. I suppose this is your tone. On the following file (0210013.txt) the tone is shifted at +0.0945 Hz but his amplitude is reduced of several dB's and most probably this is  not enough for the SL compensation process.

Maybe i'm wrong, but seems that pilot tone disappares after this period of time.

No success with 021000043.txt file  (00.30 UT)  searching mine and Riccardo's EbNaut signals.

Still working on these files..

73, Domenico iz7slz

On 11 February 2017 at 02:02, <jcraig@mun.ca> wrote:

Hi Domenico, EbNaughters,

They are there. Thank-you for the signals and
good luck with the processing.

73
Joe

On Sat, 11 Feb 2017, Domenico IZ7SLZ wrote:

Hi Joe,
many thanks for the news and for listening last night.
I think that these are the files to upload :

02100043
02100113
02100143
02100213
02100243
02100313
02100343
02100413
02100443
02100513
02100543
02100613
02100643


Thanks in advance.
73, Domenico iz7lsz



On 10 February 2017 at 23:28, <jcraig@mun.ca> wrote:

Hi Domenico, Markus,

I was QSL last night and will be trying to decipher the files.
In the mean time, I'll be happy to upload a selection from the following:
10/02/2017  00:50         1,722,763 02100023.txt
10/02/2017  01:00         1,726,085 02100033.txt
10/02/2017  01:10         1,729,138 02100043.txt
10/02/2017  01:20         1,728,414 02100053.txt
10/02/2017  01:30         1,729,243 02100103.txt
10/02/2017  01:40         1,730,089 02100113.txt
10/02/2017  01:50         1,731,313 02100123.txt
10/02/2017  02:00         1,730,247 02100133.txt
10/02/2017  02:10         1,728,654 02100143.txt
10/02/2017  02:20         1,727,439 02100153.txt
10/02/2017  02:30         1,727,488 02100203.txt
10/02/2017  02:40         1,728,258 02100213.txt
10/02/2017  02:50         1,730,316 02100223.txt
10/02/2017  03:00         1,731,318 02100233.txt
10/02/2017  03:10         1,731,974 02100243.txt
10/02/2017  03:20         1,732,601 02100253.txt
10/02/2017  03:30         1,734,040 02100303.txt
10/02/2017  03:40         1,733,984 02100313.txt
10/02/2017  03:50         1,732,407 02100323.txt
10/02/2017  04:00         1,732,032 02100333.txt
10/02/2017  04:10         1,730,527 02100343.txt
10/02/2017  04:20         1,729,818 02100353.txt
10/02/2017  04:30         1,728,160 02100403.txt
10/02/2017  04:40         1,726,563 02100413.txt
10/02/2017  04:50         1,725,159 02100423.txt
10/02/2017  05:00         1,724,693 02100433.txt
10/02/2017  05:10         1,723,009 02100443.txt
10/02/2017  05:20         1,722,004 02100453.txt
10/02/2017  05:30         1,721,957 02100503.txt
10/02/2017  05:40         1,722,702 02100513.txt
10/02/2017  05:50         1,723,323 02100523.txt
10/02/2017  06:00         1,723,621 02100533.txt
10/02/2017  06:10         1,721,201 02100543.txt
10/02/2017  06:20         1,717,729 02100553.txt
10/02/2017  06:30         1,717,857 02100603.txt
10/02/2017  06:40         1,718,412 02100613.txt
10/02/2017  06:50         1,722,189 02100623.txt
10/02/2017  07:00         1,723,705 02100633.txt
10/02/2017  07:10         1,722,470 02100643.txt
10/02/2017  07:20         1,722,844 02100653.txt
10/02/2017  07:30         1,721,744 02100703.txt
10/02/2017  07:40         1,720,981 02100713.txt
10/02/2017  07:50         1,720,357 02100723.txt
10/02/2017  08:00         1,719,757 02100733.txt
10/02/2017  08:10         1,718,611 02100743.txt
10/02/2017  08:20         1,718,148 02100753.txt
10/02/2017  08:30         1,717,861 02100803.txt
10/02/2017  08:40         1,717,337 02100813.txt
10/02/2017  08:50         1,718,192 02100823.txt
10/02/2017  09:00         1,718,566 02100833.txt

73
Joe VO1NA


On Fri, 10 Feb 2017, Markus Vester wrote:

Nice decodes from IZ7SLZ as well - here's one from the morning with very

slightly positive Doppler.


Wonder if VO1NA was listening? To verify frequency calibration, a couple
of nearby Loran lines from Wildwood (GRI 8970) might be helpful:


137497.2129 Hz
137491.6388 Hz
137486.0647 Hz


Best 73,
Markus (DF6NM)


-----Ursprüngliche Mitteilung-----
Von: IZ7SLZ <iz7slz.domenico@gmail.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Fr, 10. Feb 2017 0:17
Betreff: Re: LF: EbNaut beaconing on LF





On 2/9/2017 9:51 PM, Riccardo Zoli wrote:







P.S.: Domenico, are you ready too?

Yes, just completed installation of new EbSynth version. 07pre1.

QRV EbNaut with 6 characters, 8k21A, 2s every 30 min on qrg 137495 Hz


Carrier is on 2 minutes before and off 1 minute after the message (thanks
Paul: PTT works very well).


First transmission already started. QRT tomorrow at 08.00UT

GL, 73 Domenico iz7slz