NDB900-200W Non Directional Beacon（NDB）-NDB-Zhuhai Bright Aviation Inc.-Airport facilities and brand suppliers

一、Business

“Bright Aviation” supplies complete sets of equipment, including spare parts supply, installation and commissioning, flight check, panel repair, factory training, after-sales service, technical consultation, spare parts support, on-site fault repair, periodic inspection and other businesses.

二、Appearance

（1）NDB Cabinet

NDB Cabinet	NDB Cabinet and Antenna Auto Tuning Unit

（2）T-Type Antenna

三、 Overview

1. Non Directional Beacon (NDB) provides the airport inbound and outbound flights with a bearing indication information relative to the NDB station.

2. NDB equipment classification:

(1) NDB900-200W model NDB equipment, the maximum output power is 200W, and the operating distance is about 200km.

(2) NDB900-500W model NDB equipment,the maximum output power is 500W and the operating distance is about 350km.

四、Electrical

1. Operating Frequency: 190～700KHz.

2. Channel Interval: 1KHz.

3. Output Power: 50～200W (continuously adjustable, applicable to NDB900-200W model). 100～500W (continuously adjustable, applicable to NDB900-500W model).

4. Frequency Stability: ±0.0004%.

5. Frequency Control: frequency synthesizer.

6. Modulation Signal: 1020Hz±50Hz.

7. Modulation Amplitude: 0～95% (continuously adjustable), 95%±5%.

8. Work Type: Amplitude modulation, equal amplitude, amplitude modulation.

9. Antenna Equivalent Load: total resistance 5～40Ω; The capacitance is 200～1300pF.

10.Coverage: meet the requirements of ICAO Annex 10.

11.Primary Power：110～220Vac±15%，45～63Hz，single phase.

12.Standby Power：48Vdc backup battery, working for at least 4 hours.

五、Mechanical

1. Weight：100kg.

2. Dimensions: 120(H) * 60 (W) * 60 (D) cm, 27U chassis.

六、Environmental

1. Temperature: Indoor -10°C～+50°C, Outdoor -50°C～+70°C.

2. Relative Humidity: Indoor 0～95% (non condensing)；Outdoor 0～100% .

3. Altitude: 0～4500m MSL.

4. Work Cycle: Continuous Unattended.

5. Wind Speed Conditions: the outdoor antenna can work normally when the wind speed is up to 161 km/h and the antenna icing is 1.5 cm thick.

七、Equipment List

No.	Name	Model	Qty/Unit	Description
1	NDB Cabinet	NDB900-200W	1 Set	Including dual transmitter, dual monitor and dual power supply system.
2	Antenna Auto Tuning Unit	/	1 Set	NDB antenna auto tune matching unit.
3	Remote Controller	/	1 Set	Remotely monitor and control the working status of NDB equipment.
4	T-Type Antenna	/	1 Set	According to the type of equipment, the T-type antenna span is 40m, and 50m is optional.
5	Antenna Tower	/	1 Set	According to the type of equipment, the height of the antenna tower is 15m, and 30m is optional, including tower steel wire rope and embedded parts.
6	Antenna Ground Grid	/	1 Set	According to the type of equipment, the elliptical diameter of the antenna grounding grid is 40m, 50m and 60m, including grounding facilities.
7	Obstacle Light System	/	2 Set	Including obstacle light, power cord and light control switch.
8	Other Accessories	/	1 Set	/

八、Meeting Standards

1. CAAC,《Aeronautical radio navigation aids， Part 1：Technical requirements for non-directional radio beacon(NDB)》, MH/T-4006.4-1998.

2. CAAC，《Electromagnetic environment requirements for aeronautical radio navigation stations 》, GB 6364-2013.

3. CAAC, 《Specification for aeronautical communication navigation and surveillance station siting criteria，Part 1: Navigation 》, MH/T 4003.1-2021.

4. ICAO Annex 10, Vol. 1，Aeronautical Telecommunications : Volume I， Radio Navigation Aids. Eighth Edition, July 2023，Amendment 93.

5. ICAO Doc 8071, Vol. 1，Manual on Testing of Radio Navigation Aids : Volume I, Testing of Ground-based Radio Navigation Systems, Fifth Edition - 2018.

6. ICAO Annex 14, Vol. 1， Aerodromes : Volume I， Aerodrome Design and Operations，Eighth Edition，July 2018， Amendment 15.

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