[RFI] 20M Heterodyne

[Jim Brown]

On Mon, 22 Sep 2008 13:34:02 -0500, Bill  NY9H wrote:

>we'll detach them  to see if the problem is correctly identified.
>then over there with a few ferrites,,,  which cleared MY identical issue.

Hi Bill,

When Randy (K9OR) and I did this at his QTH several years ago, we knocked 
it down a lot but didn't kill it. There is almost certainly some direct 
radiation from the Ethernet boxes themselves, and, of course, your 
neighbors. Also, there are clocks in individual units with tolerances, and 
it's common for those clocks to spread out from 14,029 to above 14,030, and 
comparably on other bands. For others reading this, Randy's antenna is a 
vertical quite close to his shack, and he's on a small lot with neighbors 
on both sides in a city residential neighborhood (Evanston, IL). 

73,

Jim K9YC