[Mldxcc] [NCCC] Need help from the brain trust--Buzz/hum and broadcast radio

[CATFISHTWO at aol.com]

can you switch out power supplies,  and also try unplugging any wall  warts 
on the same circuit one at a time, perhaps it is being generated in  
something close by.. good luck
 
Tom
N6AJR


In a message dated 11/14/2010 2:16:35 P.M. Pacific Standard Time,  
rehill at ix.netcom.com writes:

Help!  I'm trying to get set up for SS SSB and have a buzz/hum  on 40m 
and 20m (not checked on other bands but probably there too) when I  push 
the PTT.  It is constant across the band and the volume is  constant 
regardless of the K3 RF knob position.  I hear it whether  the K3 is in 
Test mode (no RF output) or normal mode.  With the  buz/hum, I hear a CNN 
radio broadcast.  I don't hear the buz/hum or  the broadcast listening to 
RX on the K3.

Antenna is a dipole up 57  feet.  Feed line is coax with 5 big ferrite 
rings and 6 turns of coax  (RG-213).  The coax is a complete run to the 
radio.  I've put 2  or more ferrite clamp-ons on every wire running to 
the radio, but not  reducing the buz/hum.

My AM/FM/SW radio shows high noise across the AM  band in DX mode.  I did 
not find that broadcast listening to the AM  radio in local or DX mode.  
(Loral Langmier and then Chris McKay  shows).

Any suggestions for resolving this will be appreciated.   If anyone is 
available for a 40m contact, I'd like to see if this is a RX  only 
problem or an also a TX  problem.

Thanks.

Rich
NU6T

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