Surprisingly, the CM-1 featured clever engineering and outstanding performace.This Drake MSR-2 receiver (right) dates from 1977-78.
The HRO-50 was also known for its powerful audio, a result of push-pull 6V6 amplifier tubes.
Note that frequency bands were selected by plugging tuned circuit modules into the front panel.
National supplied wooden display cases for the modules, and collectors of this radio often have ten or more modules.
The beautiful SX-115 is the most sought after Hallicrafters receiver, next to the legendary SX-88.
I am partial to the receivers in my collection of vintage shortwave radios.