Avionics test instrument NAV-4M

batteryNAV/COMportable

Product Overview The NAV-4M Navigation Instrument Landing Simulator is a handheld radio transmission device operating in the VHF frequency band. It simulates localizer (LOC), glide slope (GS), VOR and marker beacon (MB) signals to verify in-field operation of LOC, GS, VOR and MB receivers. The unit is designed for ground testing, alignment verification and maintenance checks on avionics components.

Technical Specifications (table view)

• 1 | Power Supply | Main: two 3.7V 2600mAh 18650 lithium batteries; Backup: +7.5～+12VDC ≥600mA; Operating current ≤550mA
• 2 | Operating Modes - LOC | Carrier: 40 channels, 108.10–111.95MHz, accuracy ±0.0025%; Audio: 90Hz/150Hz/1020Hz; Modulation: AM depth 12–28%; DDM range -0.15 to +0.15 (step 0.01); Tx power 0±1.5dBm
• 2 | Operating Modes - GS | Carrier: 40 channels, 329.15–335.00MHz, accuracy ±0.0025%; Audio: 90Hz/150Hz; Modulation: AM depth 30–50%; DDM range -0.15 to +0.15 (step 0.01); Tx power 0±1.5dBm
• 2 | Operating Modes - VOR | Carrier: 160 channels, 108.00–117.95MHz, accuracy ±0.0025%; Audio: 30Hz/9960Hz/1020Hz; Modulation: AM depth 20–40% and FM deviation ±480Hz; Angle setting 0–359° (step 10°, precision ±1.5°); Tx power 0±1.5dBm
• 2 | Operating Modes - MB | Carrier: 75.0MHz, accuracy ±0.005%; Audio: 400Hz/1300Hz/3000Hz; Modulation: AM ≥65%; Tx power ≥-5dBm
• 3 | Operating Distance | LOC/GS: 4–6 m; MB: 2–3 m
• 4 | Physical Specifications | Weight ≤1.5 kg; Dimensions 215×108×65 mm
• 5 | Environmental Adaptability | Operating temperature -10 to +45℃; Storage temperature -25 to +60℃

Features / Technical specifications

• Model name: NAV-4M
• Function: Handheld radio transmitter to simulate LOC, GS, VOR and MB signals and verify receiver operation in the field
• Power supply: Main – two 3.7V 2600mAh 18650 lithium batteries; Backup – +7.5～+12VDC ≥600mA; Operating current ≤550mA
• LOC mode: 40 channels (108.10–111.95MHz), accuracy ±0.0025%, audio 90Hz/150Hz/1020Hz, AM 12–28% depth, DDM -0.15 to +0.15 (step 0.01), Tx power 0±1.5dBm
• GS mode: 40 channels (329.15–335.00MHz), accuracy ±0.0025%, audio 90Hz/150Hz, AM 30–50% depth, DDM -0.15 to +0.15 (step 0.01), Tx power 0±1.5dBm
• VOR mode: 160 channels (108.00–117.95MHz), accuracy ±0.0025%, audio 30Hz/9960Hz/1020Hz, AM 20–40% depth and FM ±480Hz deviation, angle setting 0–359° (step 10°, precision ±1.5°), Tx power 0±1.5dBm
• MB mode: Carrier 75.0MHz, accuracy ±0.005%, audio 400Hz/1300Hz/3000Hz, AM ≥65%, Tx power ≥-5dBm
• Operating distance: LOC/GS 4–6 m; MB 2–3 m
• Physical: Weight ≤1.5 kg; Dimensions 215×108×65 mm
• Environmental: Operating -10 to +45℃; Storage -25 to +60℃