Ok, the Modern Amp seems to be the way to go with an old AM xmtr, mainly
because they have 160 mtrs (THE band where higher power is almost
necessary)and also I can call a 800 number and get one fast.

Which amp is best for my circumstance?

I have a Ranger running 40 watts AM for drive.I want legal limit AM or
close to it with a modern Amp that can take it and not burn up because
of the duty cycle. Suggestions under $2500 new price please.

Which amp tube would be best for AM - 572's - 811's - 3-500's or the
high gain ceramic tubes?

Thanx

Lazy Senior