The FM/AM-1500 is a microprocessor controlled, digitally synthesized communication service monitor, which integrates the functions of several different test instruments into a single, compact and portable unit. Utilizing such unique features as a keyboard entry system, an LCD display for frequency readout, processor controlled memory functions and a CRT capable of alphanumeric or waveform displays, the FM/AM-1500 incorporates the functions of the following test equipment: 1. Signal Generator (with a selectable offset 7. Two programmable Tone Generators for duplex testing) 8. Power Meter 2. Communication Receiver 9. Frequency Error Meter 3. Tracking Generator 10. Modulation Meter 4. Spectrum Analyzer 11. SINAD Meter 5. Sweep Generator 12. Audio Frequency Counter 6. Oscilloscope 13. Signal Strength Meter These capabilities enable the FM/AM-1500 to be used for a wide range of communication test functions associated with most types of simplex and duplex transceiving equipment, including mobile telephone systems, AM/FM/SSB transceivers, CB and two-way radio systems, repeaters, etc.