Topband: Warbling Noise around 3513 khz.???? Opinions sought.

[Jim Brown]

On Mon,9/1/2014 3:25 PM, Jim Streible wrote:
>
> Since we are both hearing it, on the coast and here just North of 
> Atlanta, it is either
> being transmitter or has something to do with the power grid.

The fact that you're hearing a sub-harmonic suggests that it is local 
and generated by a common appliance, signalling of some sort (a security 
system?), or by a CATV system common to your areas.

73, Jim K9YC