A SINGLE-SIDEBAND SHORT-WAVE SYSTEM 



497 



\7 



H.F. 

 AMPLIFIER 



FIRST 

 DETECTOR 



GAIN 



CONTROL 



BIAS 



RECTIFIER FOR _ 

 GAIN CONTROL 



BEATING 

 OSCILLATOR 



SMOOTHING 

 STAGE 



AMPLIFIER 



-^ 



NARROW 

 CRYSTAL 

 FILTER 



60"^ MOTOR 



SECOND 

 DETECTOR 



L.F. 

 AMPLIFIER 



OSCILLATOR 



# 



COUPLING 

 STAGE 



BALANCED 

 MODULATOR 



COUPLING 

 STAGE 



COUPLING 

 STAGE 



SMOOTHING 

 STAGE 



/T 



LOCAL CARRIER 



SECOND 

 DETECTOR 



Fig. 5 — Schematic of single-sideband receiver. 



