Perry's observations on harmonic content of the IC-735 output probably apply to the 706 as well. Sounds like something I should check. However, even 100 milliwatts of output on LF would be useful for experiments, and would be plenty to drive a final. The harmonics are easy to get rid of, as long as the finals in the rig don't blow. That would be the major concern. Lyle, K0LR