[Elecraft] Unwanted audio

[Don Wilhelm]

Martin,

Just a thought - do you have anything plugged into the LINE IN jack?  Or 
do you have MIC plus LINE set on?
Another thought - do you have the FP mic set to turn on the additional 
mic preamp?

73,
Don W3FPR

On 3/3/2020 3:31 PM, Martin wrote:
> Elecrafters,
> my K3 shows a strange Problem. On USB it transmits a tone at about 2khz 
> above (respectively on LSB about 2khz below) carrierpoint. This happens 
> even with no mic attached. The level of the tone follows the setting of 
> the 2.4khz level of TXEQ. It also follows Mic Gain level.
> Anyone know what to do?
> Setup: Dynamic Mic on Frontpanel (or removed, doesn't matter), tap XMIT, 
> listen on sdr-console.
>