acoustic frequency signal generator

audio frequency signal generator

frequency signal generator

frequency sweep signal source

frequency-sweep generator

high frequency signal generator

high-frequency and modulation frequency signal generator

low frequency signal generator

Low-frequency Signal Generator

radio frequency signal generator

Scan Frequency Signal Generator

single-frequency signal generator

standard high frequency signal generator

transistorized high frequency signal generator

two-frequency signal generator

very high frequency signal generator

video frequency signal generator

video frequency sweep generator

voice-frequency signal generator