[Elecraft] Crackling in Headphones

[Vic Rosenthal 4X6GP/K2VCO]

See if you hear it with no antenna connected (or switch to ANT 2 if 
nothing is plugged into it).

That will tell you if it is some kind of noise that you are picking up 
or if it is being produced in the radio.

73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/

On 30 Nov 2015 14:02, john at kk9a.com wrote:
> There are times that I have noticed a crackling sound in my headphones
> with my K3S. This is not the normal band noise static that has depth, this
> crackle sound seems very close to my ears.  I first noticed it with my
> Heil headset and I tried wiggling the connection, changing the RX EQ
> settings and turning on noise reduction but nothing had any effect. It
> randomly comes and goes and I think I have also heard it on TX. I thought
> perhaps it was related to the Heil brand headphones. Last night I plugged
> in a new Sony professional headphone and the crackling sound was very
> strong for a few minutes and then eventually went away. I have never
> experience this with any other radio and I have no idea what is causing it
> or how to make it go away.
>
> John KK9A