In article ,
dxAce wrote:


wrote:

I'm hearing a pulsating sound on 4810Khz with AM demod. Stronger at
night, so it's not local. QTH is SF Bay Area.

It could quite possibly be one of the CODAR radars. They play havoc with 60
meters.

Whatever it is, it's a broadband sucker. Goes from 4785 to 4810.
Sounds like two carriers getting FMed. "Swish Beep Swish Beep...".

Mark Zenier
Googleproofaddress(account:mzenier provider:eskimo domain:com)