FWIW, the signal is no longer modulated at 1Am PST. The carrier is at
135.95 when I use the sync mode to lock onto it. The signal is just as
strong, simply not modulated.

wrote:
www.lazygranch.com/sound/shortwave/136khz.wav
Recorded in the SF bay area. I got the demo of skysweeper to decode it
as FSK, though not terribly interesting data.

Any idea of the source of this signal?

wrote:
FWIW, the signal is no longer modulated at 1Am PST. The carrier is at
135.95 when I use the sync mode to lock onto it. The signal is just as
strong, simply not modulated.

Now that you put it that way, a quick Google identifies it as station
NPG in Dixon, CA.

--
If John McCain gets the 2008 Republican Presidential nomination,
my vote for President will be a write-in for Jiang Zemin.

I've always wanted to look at that Dixon antenna farm, so maybe I'll DF
this signal.

Googling NPG, I found the program a reference to the Argo program to
demod the signal. Still no modulation on that 135.95 signal, but Argo
works for NDBs too. This is the WL (Canada) beacon
http://www.lazygranch.com/images/beacons/wl.jpg
Distance about 1000 miles.

clifto wrote:
wrote:
FWIW, the signal is no longer modulated at 1Am PST. The carrier is at
135.95 when I use the sync mode to lock onto it. The signal is just as
strong, simply not modulated.

Now that you put it that way, a quick Google identifies it as station
NPG in Dixon, CA.

--
If John McCain gets the 2008 Republican Presidential nomination,
my vote for President will be a write-in for Jiang Zemin.