[Elecraft] K2: receiving noise without antenna on certain qrgs

[Jim Brown]

On Mon, 12 Jul 2004 08:48:17 -0700 (PDT), Daniel Reynolds wrote:

>I have experienced intermod of local AM broadcasters as high up as 
40m. 

Several months ago I bought and installed an ICE high pass filter (402X) 
for the AM broadcast band (it cuts off at about 1.7 MHz). I noticed a drop of 
a few dB in the overall BG noise level on 160. I didn't compare it on other 
bands. Just to make sure it wasn't loss in the filter, I ran a response on the 
filter with a calibrated generator and scope. It wasn't. 

Jim Brown  K9YC