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

Rich NU6T rehill at ix.netcom.com
Sun Nov 14 15:47:59 PST 2010


Thanks.  I did unplug everything and restarted with a minimum system and 
then added one item, removed it and so on.  The only change is when 
removing the mic plug.

Rich
NU6T

On 11/14/2010 3:35 PM, CATFISHTWO at aol.com wrote:
> 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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