Peter,
Is the Flux Density scale on your grabber calibrated? In femtotesla?
Stefan's signal strength seems to be in the 0.1 to 0.4 range on your flux
density scale.
If Stefan's signal strength is near 1 femtotesla at your location, I would
have a chance of seeing his signal at my location. I see some indication of
a signal around 8970.005, but SNR is poor and I am not sure of the
calibration of my clock, so it would be helpful to know if the signal that I
am seeing might be Stefan's (if so I could reduce RX bandwidth for better
SNR).
73,
Jim AA5BW
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of PA1SDB, Peter
Sent: Sunday, December 15, 2013 6:49 AM
To: [email protected]
Subject: Re: LF: A short VLF experiment at DK7FC
Stefan,
Signal is O.K., but stabillity is'nt :-( To much spread around center
frequency.
(I know.... I'm complaining about 0.01 Hz drift..........)
73's Peter
----- Original Message -----
From: "Stefan Schäfer" <[email protected]>
To: <[email protected]>; "Paul" <[email protected]>
Sent: Sunday, December 15, 2013 4:14 AM
Subject: Re: LF: A short VLF experiment at DK7FC
Since 4:10 UTC, the signal is available without interruptions now on
8.97000500 kHz.
73, Stefan/DK7FC
Am 14.12.2013 20:50, schrieb Stefan Schäfer:
> Hi all,
>
> Tomorrow the rain probability is just 10% and so i think i can risk to run
a short VLF experiment on 8970.00500 Hz. I'm using the
> fixed antenna at JN49IK00WD. These days, the QRN is very low for quite a
long time! The plan is to run about 500W RF power, or
> more, depending on the voltage limit of the antenna. And the plan is to
start transmitting tonite, after the experiment with
> VO1NA, i.e. i'll come on air arround 2 UTC, hopefully. I will run the test
until the late afternoon. First i'm TXing a stable
> frequency until 9 UTC, later some DFCW-600, and then maybe some tests in
OPDS32.
> Suggestions welcome.
> BUT it all depends on the WX. If it starts to rain then i have to stop.
> Will someone give it a try and watch for me?
>
> 73, Stefan/DK7FC
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