[rfeenstra]

The pre FM Philharmonics were 30 tubes. they included an audio expander and a scratch filter for the phono input.  This one has the early FM band.  27 tubes on the tuner, 6 on the amp/PS.  There is no audio expander as they needed the tube space for the FM section. As I said, the FM is the old 42-50 mhz frequency range.  I just purchased a TV tuner "subber".  These were a piece of test equipment that substituted for the TV tuner for test purposes.  With a few modifications they can be made to convert the modern FM band into the old band.  It takes 3 ranges to do that since the old band is only 8 mhz wide.