Marconi IFR Aeroflex NAV750A Bench Test Set

The Marconi IFR Aeroflex NAV750A is a benchtop test set engineered for precision testing and calibration of aircraft navigation and communication systems. This self-contained simulator generates VOR, LOC, GS, Marker Beacon, and COMM signals across multiple frequency bands, delivering the signal fidelity required for avionics maintenance, verification, and compliance with aviation safety standards.

– Technical Specifications

Frequency Coverage
• 70 to 79 MHz
• 108 to 156 MHz
• 329 to 335 MHz
• Carrier frequencies up to 1.2 GHz
• Carrier frequencies up to 2.4 GHz (selected models)

RF Output
• -137 dBm to +25 dBm (carriers ≤1.2 GHz)
• -137 dBm to +19 dBm (carriers >1.2 GHz)
• Output impedance: 50 Ω
• Output connector: Type N (MIL-STD-348)
• Reverse power protection: 50 W @ 50 Ω or 25 W @ VSWR 5:1

Amplitude Modulation
• Range: 0 to 99.9% (0.1% resolution)
• Distortion: <3% at 1 kHz for depths to 80%
• 1 dB bandwidth: 30 kHz

Frequency Modulation
• Deviation: 0 to 100 kHz
• Distortion: Typically <0.5% at 1 kHz for deviations to 10 kHz; 40 dB
• Rise time: <10 µs
• Output reduction: 5 dB

– Key Features

• FSK and pulse modulation available
• Tone modulation: 1020 Hz (0–60% depth); 90 Hz and 150 Hz phase-locked to VOR bearing selector
• Front-panel or GPIB/RS232 resettable output protection
• Navigation signal simulation for VOR, LOC, GS, and Marker Beacon equipment

– Typical Applications

Avionics bench testing, navigation receiver calibration, communication system verification, Marker Beacon equipment qualification, ground support operations.

– Compatibility & Integration

Designed for VOR, LOC, GS, Marker Beacon, and COMM system testing. GPIB and RS232 control interfaces enable automated test sequences and remote operation.