Marv,

Are you using computer control of the K3S and power on the computer at nearly the same time as the K3S? If you have the PTT-KEY menu set to anything other than Off - Off, that can occur as the computer tests the com ports.

Other than that, the K3S is detecting a key, paddle, or PTT closure when it is powered up. You just have to find out which one. Unplug all of them and plug them in one at a time (powering on after each one is plugged) to reveal which one is causing the error.
Don't forget the microphone jack.

73,
Don W3FPR

On 12/24/2018 3:08 PM, [email protected] wrote:
This ERR KEY message as show up on my k3S displayed in the Sub Receiver
display area. Any ideas on how to get rid of it?
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