I was just given an SB22A 40 meter sideband transeiver , with no power cable and no manual and no additional information. I did download the assembly and operation manual BUT while it mentioned the required voltages it said nothing at all about the current required. I can look up the filament current of the different tubes and arrive with that current, but the three DC voltages would be much more challenging.And the final amplifier tubes (6GE6's) are normally horizontal output tubes, and that application's information is not very useful for them in linear amplifier service.Does anybody have any information about the actual current draw of this radio?