Re: LF: K7PO testing 8270.0

[Paul Nicholson <vlf0403@abelian.org>]

Ward K7PO wrote:

> I'm transmitting on 8270.0 now, showing 600 ma antenna
> current. Ideally, it runs for the next 24 hours (if I have
> enough air on the amp!)

Getting a strong signal at 8270 Hz at Hawley Texas, distance
approx 1200 km from Tonopah.

 http://abelian.org/vlf/tmp/180209a.gif

This is almost certainly your signal but there is a large
frequency spread.   Is the GPS lock working correctly?

If the signal was concentrated on one frequency, I think it
would be visible at much greater distance.

S/N of the sharp peak at 8270.000000 is about 16.5 dB in
34.7 uHz.

...

The same signal appears at Forest Virginia, 3070km, with
S/N 12.0 dB.

 http://abelian.org/vlf/tmp/180209b.gif

There we see not so much spread of the signal energy, so
perhaps the rx timing at Hawley was upset.

If your signal makes it to the East Coast, it is likely to
cross the Atlantic.  Now I look for the signal at Todmorden.
Hopefully the carrier continues!

--
Paul Nicholson
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