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.
