[Elecraft] RFI issues

[Jim Brown]

On 2/21/2020 3:08 PM, hawley, charles j jr wrote:
> I have put ferrite on the line cord which don't affect it.

Which ferrite? There are dozens of different types. Did you just clamp 
one on, or did you wind multiple turns through it as shown in these links?
http://k9yc.com/KillingReceiveNoise.pdf and
http://k9yc.com/KillingRXNoiseVisalia.pdf

If you don't use the "right" ferrite and if you don't wind the "right" 
number of turns for the band(s) where you hear the noise, the ferrite 
WON'T do anything.

73, Jim K9YC