[Elecraft] Re: FM Broadcast Station Interference

[TBald53892@aol.com]

Many thanks to all of you who have responded to my post about FM broadcast 
crud. I've also noted that others have the same problem. Just to further 
clarify the issues here at my QTH:

1. I am receiving the crud with NOTHING attached to the K2 but the power 
cord. Right now its coming in especially well on 14.068 MHz.

2. I've tried different power cord lengths, line operated dc power supplies, 
and external battery supplies (both gel cells and NIMH) and still experience 
the same level of interference. I am planning to fabricate a shielded, 
twisted pair power cable as was suggested.

3. I went portable with the K2 and NIMH battery pack inside my house and 
around the lot. Again with NOTHING connected to the K2 except the battery 
pack on an 8 inch cable. There were slight variations in the strength of the 
interference as I walked around the house and lot but no major differences.

4. I will soon be installing the KBT2 perhaps that will help. Just as an 
aside I installed the KAF2 last night. What a super option...that thing works 
great!

5. Perhaps this problem has something to do with my call. Oh well.

I have easy 5-min access to the backcountry from my QTH but the FM 
transmitting tower is visible from just about every trail on this side of the 
mountain. I'm going to take the K2 about 20 miles away and see if that makes 
a difference! Stay tuned.

Tom KI5FM 


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