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My grandfather was an Amateur Ham Radio operator post WW-2 and these components are what is left of his setup. I am not sure what any of this stuff is, but chatgpt gives the breakdown below. I do know that the Call sign W4NMJ was issued in 1949, belonging to an operator in Georgia (which tracks).
Equipment Breakdown:
Top Unit (Audio Processor / Preamp or Speech Processor): Features controls labeled Mike Gain, Receiver Output (misspelled or partially worn label), and Phase, along with an on/off toggle switch.
Middle Unit (SWR / Power Meter or Antenna Tuner component): Appears to be an amateur radio tuning or metering device featuring a central analog signal/SWR meter labeled Forward / Reverse and a large variable tuning dial.
Bottom Unit (Audio Signal Generator / Oscillator): Features a frequency control (Freq), waveform selector switches (Sin, Tri, Sq for sine, triangle, and square waves), Volume, and signal Output jacks.
