Product Overview
The NAV-4M Navigation Instrument Landing Simulator is a handheld radio transmission device. It operates in the VHF frequency band and can simulate signals from localizers (LOC), glide slopes (GS), VOR stations, and marker beacons (MB) into space.
The NAV-4M is used in the field to verify the operational capabilities of localizer receivers (LOC), glide slope receivers (GS), VOR receivers (VOR), and marker beacon receivers (MB).
Technical Specifications
| Serial No. | Name | Parameters | |
| 1 | Power Supply | Main Power: Two 3.7V 2600mAh 18650 lithium batteries.
Backup Power: +7.5～+12VDC ≥600mA. Operating Current: ≤550mA. |
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| 2 | Operating Modes | LOC | Carrier Frequency: 40 channels, 108.10～111.95MHz, accuracy ±0.0025%;
Audio Components: 90Hz, 150Hz, 1020Hz controllable; Modulation: AM, depth 12～28%; DDM Range: -0.15～+0.15, step 0.01. Transmission Power: 0±1.5dBm. |
| GS | Carrier Frequency: 40 channels, 329.15～335.00MHz, accuracy ±0.0025%;
Audio Components: 90Hz, 150Hz controllable; Modulation: AM, depth 30～50%; DDM Range: -0.15～+0.15, step 0.01; Transmission Power: 0±1.5dBm. |
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| VOR | Carrier Frequency: 160 channels; 108.00～117.95MHz; accuracy ±0.0025%.
Audio Components: 30Hz, 9960Hz, 1020Hz controllable. Modulation: AM, depth 20～40%; FM, deviation ±480Hz. Angle Setting: 0～359°; step 10°; precision ±1.5°. Transmission Power: 0±1.5dBm. |
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| MB | Carrier Frequency: 75.0MHz, accuracy ±0.005%;
Audio Components: 400Hz, 1300Hz, 3000Hz controllable; Modulation: AM, ≥65%; Transmission Power: ≥-5dBm. |
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| 3 | Operating Distance | LOC/GS：4～6M；
MB：2～3M。 |
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| 4 | Physical Specifications | Weight: ≤ 1.5Kg；
Dimensions: 215×108×65mm。 |
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| 5 | Environmental Adaptability | Operating Temperature: -10～+45℃。
Storage Temperature: -25～+60℃。 |
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