[AMRadio] Telephone Wiring RFI Treatment

[W4AWM at aol.com]

Since the problem is only there on 40 meters, one or both speaker leads may 
be resonant at the frequency used.  Try ferrite cores on the leads or change 
the lead length making sure they are nor resonant on any of the ham bands you 
use.

73, 

John,  W4AWM

<<  My problem with this has always been keeping RF out of the computer 
speakers 
on 40M. Its the only band I seem to have RF problems with... >>