Bob, Loading cap is a 300 pf variable, but not a broadcast receiver type. Midline unit, maybe National STH-300 or Hammarlund MC-325-M. Dennis D. W7QHO Glendale, CA On Nov 2, 2009, at 4:07 PM, Robert Nickels wrote: > Anyone have the first Multi Elmac transmitter - the A-54? Looking > for > a description of the output loading capacitor.