Aeroflex IFR Marconi NAV-750BR – Signal Generator

The Aeroflex IFR Marconi NAV-750BR is a precision navigation signal simulator for functional testing and calibration of airborne receiver systems. It generates VOR, LOC, ILS, COMM, and Marker Beacon signals in a self-contained unit suitable for bench and flightline deployment, eliminating the need for multiple test instruments.

– Technical Specifications

Signal Generation
• Complete VOR, LOC, COMM, Marker Beacon (MKR), and Glide Slope (G/S) generator
• 40 paired LOC-G/S frequencies
• ARINC two-out-of-five wire frequency selection output

Frequency Coverage
• 70.000 to 79.900 MHz, 108.000 to 156.000 MHz, and 329.000 to 335.000 MHz
• Selectable in 10 kHz steps (70–799 MHz) and 50 kHz steps (108–156 MHz)
• COMM frequencies: 118.000 to 157.950 MHz in 25 kHz steps
• 100 Hz frequency resolution
• Automatic channeling with 25 kHz spacing

Modulation
• Automatic VOR or LOC modulation selection
• VOR tones at 9960 Hz (phase-locked to 2.16 MHz crystal) and 1020 Hz
• G/S deviation selectable as ±0.045, ±0.091, ±0.176, ±0.400, and continuously adjustable 0.800 DDM
• FM deviation accuracy: ±5% of indicated deviation excluding residual phase modulation at 1 kHz
• Distortion: <3% at 10 radians for FM and <3% at 1 kHz rate for AM up to 80% modulation depths
• External modulation input via front panel BNC or rear panel jack

RF Output
• Output level selectable in 1.0 dB steps from -127 dBm to 0 dBm
• RF output range: -137 dBm to +25 dBm (carrier frequencies up to 1.2 GHz); -137 dBm to +19 dBm (above 1.2 GHz)
• Maximum guaranteed AM output: +8 dBm
• Usable to 2 GHz with AM for carriers <1 GHz

Power & Physical
• DC Operation: 11 V to 32 V
• Power consumption: 70 W (Option 3 not fitted)
• Built-in bearing monitor
• Demodulation output on rear panel

– Key Features

• GPIB control (NAV-750BR model)
• Single instrument replaces multiple test sources
• Flightline and bench-ready configuration

– Typical Applications

Functional testing and calibration of airborne navigation receivers, avionics systems, and VOR/ILS/COMM equipment.

– Compatibility & Integration

Designed for testing navigation receivers and avionics systems across aviation applications.