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.

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