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Well...AM is not the most important thing here in Norway. Hardly anyone use it anymore.

 

SSB is more interesting.

Any neat tricks to keep the S-9 below 20 W on SSB ?

 

The Zetagi amp has a 6 step output power switch.  And as far as I can see on the schematics, it's possible that setting this switch to a low setting will reduce the signal into the output stage, thus preventing it from blowing.

Will this do ?