[Elecraft] K3 3051 audio buzz in chassis on SSB

[Tom-N2YTF]

I have the same buzz, and no question it is not the case.  I find it
particularly irritating when I have the built in voice keyer running and am
in a quiet shack.  I can almost make out my voice from the sound....

My GUESS as I have not yet held it down while transmitting (my rig is at
Elecraft for unrelated repair work), is that the heatsink for the internal
amp is making the noise....at least the noise is coming from that area. 
Although I have to agree that everything in my rig also seems very secure to
the touch.

73,
Tom-N2YTF



Brett Howard wrote:
> 
> Can you damp it by putting your hand on any of the chassis panels?
> 
> ~Brett
> 
> On Sat, 2009-07-04 at 04:55 -0700, paulb wrote:
>> Hi folks
>> 
>> K3 going perfectly fine here.
>> Just curious about an odd audio buzz
>> in the rear of the chassis under heavy
>> SSB modulation. It sounds like
>> transformer or frame slightly loose,
>> nothing appears loose or un-done.
>> Noticed when using the M1 audio 
>> record - playback, so normally don't 
>> hear it when using the mic.
>> Wonder if there is any particular area to
>> check ?
>> 
>> Antenna tuner is bypass; 
>> Low vswr coax to antenna.
>> 
>> 
>> cheers 
>> 
>> paul b
>> 
> 
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