A very effective attenuator for SSB is a feature almost all (modern) transceivers have: 'MIC GAIN' ; -)
Yes, I know. But with mic gain you have major risk to cook your converter if you forget to setup it when you come from terrestrial ssb ! Ok I guess you are saying :But it the same if you regulate power, if you forget to lower the power you have the same result... ok but I'm confident that this solution (regulate KW TS2000 power) is more secure than mic gain...