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Air Traffic Control and Navaids System

DVORNAVAIDS SYSTEMS

Specifications

General Characteristics

Type Double Side Band
Output Power 25 to 100 W, Adjustable
Bearing Accuracy ±0.5 degrees
Spurious Attenuation More than 60 dBc
DC Input Power +40 to +56 VDC (battery nominal 48 V)
Power Consumptions 2.0 kVA (Normal operation)

Environmental Conditions

Ambient Temperature (Except COTS) -10 to +55℃ (Indoor Equipment)
-50 to +70℃ (Outdoor Equipment)
Relative Humidity
(Except COTS)
Maximum 95%RH (up to +35℃),
Maximum 60%RH (up to +55℃) (Indoor Equipment)
Maximum 95%RH (Outdoor Equipment)
Wind Speed Maximum 60 m per second (survival, standard)
Maximum 90 m per second (survival, option)
Ice Load Maximum 5 cm (survival)

Carrier Signal Characteristics

Frequency Range 108 - 118 MHz
Frequency Stability ± 0.001%
Channel Spacing 50 kHz
Reference Frequency 30 kHz ± 0.01 %
Reference Modulation Depth 30 ± 1 %
ID tone Frequency 1,020 Hz ± 0.01%
ID tone Modulation Depth 4 to 20%, Adjustable (without voice)
Maximum 10% (with voice)
Voice Modulation Depth Maximum 30%

Side Band Signal Characteristics

Sub-Carrier Frequency 9,960 ± 1 Hz
Sub-Carrier Frequency Stability ± 0.001 %
Modulation Frequency 30 Hz ± 0.01 %
Modulation Depth 30 ± 2%
Deviation Ratio 16 ± 1

Field Monitor Limit

Bearing Error ±1 degree, Adjustable (Tolerance +0, -0.2 degrees)
Carrier Level ±3 dB, Adjustable (Tolerance ±0.1 dB)
AM Modulation Depth at 30 Hz ±15%, Adjustable (Tolerance ±0.1%)
AM Modulation Depth at 9960 Hz ±15%, Adjustable (Tolerance ±0.1%)
ID Modulation Depth ±50%, Adjustable (Tolerance ±1%)
No ID Period 10 to 120 seconds, Adjustable (Tolerance ±1 second)
ID Code Mismatching
FM Deviation ±1, Adjustable (Tolerance ±0.1)

Antenna System

Antenna Elements 48 + 1 Alford loop antennas
Field Monitor Antenna 1 Yagi antenna (edge type is optional)

Applicable Standards

  • ICAO Annex 10
  • EUROCAE ED-52
  • ISO 9001
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