[RFI] DSL Filter Update

[Jim Brown]

On Sun, 8 Mar 2009 17:46:37 -0700 (PDT), Roger Parsons wrote:

>but a cut-off of 3MHz would not protect against a 160m transmitter
> at all - which is where this all started.

You're looking at the elephant through a differential-mode hole in 
the tent. Don't rule out the value of common-mode suppression, which 
is considerable. The KY and K-Com filters are both quite well 
thought of (because they work), and they are ONLY common mode 
chokes. I do think it is important that they are VERY GOOD common 
mode chokes. 

73,

Jim Brown K9YC