[600MRG] unmodulated carrier at 475

[Steve Ratzlaff]

I spent some time Thursday evening trying for this signal on 475.0. I'm 
about 20 miles south of Tucson, AZ and I had no trouble hearing it, at 
"poor/weak" level in the 0540 utc time period and following 30-40 
minutes. It had some  fading but never to inaudibility. I have two main 
receive antennas, 900' E/W and 700' N/S longwires. The signal would 
regularly fade up and down between the two antennas, first being 
stronger on one, then stronger on the other. I find that to be unusual. 
I'm primarily an LF NDB DXer for many years, and none of the NDBs I've 
heard I've ever noticed had such a pattern. If the beacon is to the east 
then the E/W antenna always hears it better than the N/S antenna; same 
for a beacon heard best on the N/S antenna, with no fading between them. 
I don't know what that means for this 475.0 signal other than I can't 
remember ever having experienced that before.

But I also found two other nearby unmodulated carriers. 475.260 with a 
much stronger, non-fading signal, always better on the E/W wire; 474.740 
much weaker, heard about the same strength with no fading on both E/W 
and N/S wires, indicating that signal is somewhere in between for direction.

So whether any of this means anything for finding where the 475.0 signal 
is I don't know, but that's my report from last night.

73,

Steve AA7U

near Sahuarita, AZ

R75, E/W and N/S longwires


On 4/27/2017 5:46 AM, John Langridge wrote:
> Good morning -
>
> For the last two nights there has been a strong carrier reported on
> 475 by stations across the South and East.  The signal is due East of
> me here in Dallas on several antennas and K4RCG in Virginia was
> reporting it on a roughly NE / SW line.  The SW line would put it in
> LA / MS region... I originally wondered if it was XSH/7 working on the
> PA and/ or antenna as the signal levels were consistent with what I
> recall his being on PSK and CW when he was last QRV.  Someone
> indicated that his assigned frequency was active higher in the band,
> however.
>
> N4DB, also in Virginia, noted that he was hearing a weak CW signal
> that was somewhat obscured by the carrier.  I'm wondering if someone
> is trying to put an NDB transmitter on the air...  Tuning off of the
> carrier did not reveal a CW signal here, however.
>
> Anyone else hear this signal?  Please have a listen tonight... High
> QRN in that direction didn't seem to impact it much here..
>
> 73!
>
> John KB5NJD / WG2XIQ..
>
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