Topband: Speaking of noise...

[D Rodman MD]

Here is my situation.  I am pretty sure noise is from switching power supplies. 
Unfortunately, it tends to put noise right where I don't want it.  Like bottom of
160, 80 and 40m.  Typically the noise is 20-25 kHz of S8-9.  One hears
modulations on it and the whole band moves up and down in frequency 15-25 kHz
over many hours.  Best way to locate, inside house, outside house and correct?????

David J Rodman, MD

Assistant Clinical Professor
Department of Ophthalmology
SUNY/Buffalo

Office 716-857-8654