[Elecraft] K3 shortening CW dits

[Dave Hachadorian]

A sharp-eared operator at W3LPL told me that my CW keying sounded a little light in the CQWW contest.  I am using a Winkeyer, controlled by N1MM Logger, connected to the KEY jack on the back of the K3.

An oscilloscope shows that the Winkeyer is producing a string of dits at the proper 50% duty cycle.  However, looking at the RF envelope of the K3 output, the duty cycle is about 40%.  Listening to the K3 on another receiver, the dit shortening is quite noticeable.  If I set CONFIG: CW QRQ = ON, the transmitted dits are exactly 50% duty cycle.  However I can’t live with the RIT, Split, etc. restrictions with QRQ ON.

I have two K3’s, and they both behave the same way.  Any ideas out there?

Thanks!

Dave Hachadorian, K6LL
Yuma, AZ