Although this radio is commonly referred to as a spy radio, this is a layman's term. The radio was developed in the late 1940s for short-range communications, up to 25 miles. The transmitter was crystal controlled.
Range 2 to 8 MHz in 2-4 and 4-8 MHz sub-bands
A1 sensitivity approx. 5 uV, A3 approx. 15 uV
Power 1 W only A1
Fitting battery-powered electronics
Battery power supply
Source www.vq5x79.f2s.com (fig. courtesy of G4NCE),original manual
Range 2 to 8 MHz in 2-4 and 4-8 MHz sub-bands
A1 sensitivity approx. 5 uV, A3 approx. 15 uV
Power 1 W only A1
Fitting battery-powered electronics
Battery power supply
Source www.vq5x79.f2s.com (fig. courtesy of G4NCE),original manual