Yep, the power control circuit does have a bit of initial character overshoot.    This is noticed when changing power levels or when changing bands and a few other instances which I don't recall.   Since it occurs on the first CW element only, and doesn't fault the amp,  I don't consider it of concern.

You do have the ALC active from the amp and correctly set in the amp menu and the K3S menu.......don't you?   That's what it is there for.  Just be sure during normal operation the amp ALC is not active as seen on the K3S ALC indicator.

73

Bob, K4TAX

On 1/12/2020 11:32 AM, Gary Hunt via Elecraft wrote:
Just started noticing that occasionally the first character sent on CW will peg 
the watt meter on the KPA500.  It does not fault.  Sometimes a QSY to a 
different band or even a different band segment will trigger it again, 
sometimes not. Both of my antennas require my KAT500 which seems to have found 
acceptable matches for both antennas on the appropriate bands. It just uses a 
previous found solution when QSYing.  Trying to determine which piece of 
equipment might have an issue.  Planning on sending the K3 in for a check up 
but was hoping to have a K4 here first.
Any thoughts?
73, Gary KC9EE

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