Not only SSB. I have overshoot on CW.

This problem appears to be rig-specific. I just duplicated his test using three wattmeters in series, together with a Bird 4273 RF sample. The sample feeds a Tektronix SC504 oscilloscope. My wattmeters are the Alpha 4510, LP-100, and Array PowerMaster. With the K3 set to 22 watts from the menu, keyer to 30 WPM, I then sent a single "dit" on 40M CW into a 50-ohm Bird TermaLine load.

Observation: I waited 30 seconds for the ALC to stabilize between each successive "dit." All three wattmeters read between 22-23 watts in peak mode. The oscilloscope showed no overshoot whatsoever. I have no mic to plug into the K3 at the moment, so no SSB overshoot testing was performed.

Paul, W9AC


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