Aeroflex FM/AM 500A Overview Features: FM signal generator AM signal generator Sensitive 2 ?V receiver for AM, FM, and SSB 10 Hz to 9999.9 Hz variable audio generator plus audio frequency error meter 1 kHz audio generator Frequency error meter with 1 Hz resolution Peak and average reading watt meter, automatically protected generator output to 150 watts (no bothersome fuses to replace) Deviation measurement capabilities to 60 kHz SINAD/Distortion meter 0.2 PPM TCXO Power Requirements: 115/230 V, 50-400 Hz