SSA - Non-Directional Beacon
NDB-SS05
DUAL NON-DIRECTIONAL BEACON SYSTEM
DISCONTINUED - FOR REFERENCE ONLY
The NDB-SS05 is a complete Dual Non-Directional Navigational Beacon system built to ICAO Annex 10 requirements. It is designed for continuous duty, outdoors operation, easy maintenance and is supported by a full complement of accessories and spare parts.
Features
- Dual system - automatic switchover
- All-weather enclosure
- Modular construction
- Microprocessor controlled
- No special programming tools
- Built-in fault detection
- Remote control option
Remote control option
The NDB-SS05 TX dual transmitter system is built using two system modules which operate independently and allow for easy field replacement. All modules are easily accessible. Output current, sub-module voltages, modulation and internal temperature are continuously monitored by a digital microprocessor and displayed locally on the built-in instrument or remotely, via the optional remote control. The output current is also displayed on the antenna coupler analogue meter. Faults are easily detected and traced to the module level using the built-in LED indicators, test points and measuring instruments.
In case of a serious malfunction (power output reduction to 50% or less, absence or continuous presence of modulation) an alarm is generated and the stand-by unit is placed in operation automatically. In case of mains power failure the unit automatically switches to battery power and back. Batteries are automatically recharged by the built-in charger.
Transmitter frequency selection is made either through a crystal change or by synthesizer programming. Beacon identification (IDENT) is jumper-selectable; no special programming tools are required.
In addition to the Morse-code output, the transmitter carrier may be voice-modulated via a microphone or line input.
Both transmitter and antenna coupler units are housed in weatherproof enclosures, suitable for all-weather operation.
Monitor Receiver
The NDB-SS02 RX monitor receiver is a self-contained unit, suitable for rack mount or stand-alone operation. The receiver provides alarm indications on IDENT absence or loss of carrier. Receiver frequency selection is made either through a crystal change or by synthesiser programming. Audio output is provided both via a built-in speaker and 600 Ω line.
Remote Control
The NDB-SS05 RC allows remote reporting of system parameters and alarm indications as well as control of the NDB via dial-up or leased line and local control via a personal computer. Commands include transmitter selection, system shut-down, locator and auxiliary output control.
Locator beacon ON/OFF remote control is possible via the NDB-SS02R VHF unit that responds to the approaching aircraft's VHF transmitter repeated PTT activation.
Specifications for the NDB-SS05 TX Dual Transmitter
| Frequency Range | 250 to 550 kHz (crystal or synthesizer controlled, user selectable) | |
| Frequency stability | Better than 10 ppm | |
| Emission Mode | NON / A2 (1020 Hz or 400 Hz tone), A3 | |
| Modulation Depth | 0 to 97 % | |
| Identification Code | International Morse Code (IDENT), 64 dot Morse keyer, user-selectable | |
| Voice Input | 200 Ω dynamic microphone or 600 Ω line input | |
| Power Output | 0 to 30 W RMS, continuous duty (100%) | |
| Spurious Outputs | - 60 dB relative to rated output (crystal operation), - 50 dB (synthesizer operation) | |
| Audio Distortion | less than 3% | |
| Power Input | 220 VAC 50 Hz 500 VA ± 15% or 48 VDC / 10 A ± 10% | |
| MTBF | 20 000 hours | |
| MTTR | 20 minutes (modular design for rapid maintenance - repair by replacement) | |
| Availability | 100% (fault tolerant - dual system concept with automatic changeover) | |
| Operating Temperature | -20° C to +55° C | |
| Humidity | 0 - 100% (designed for outdoor use, rainproof to IP55) | |
| Approvals | Hellenic Civil Aviation Authority, Hellenic Army Aviation Corp. Meets all the relevant requirements of ICAO Annex 10 pertaining to NDBs. | |
| Dimensions | 65W x 85H x 20D cm | |
| Accessories Included | Battery Charger (48V / 5A), Dummy Load, Testing Instruments,locator control |
| NDB-SS02 RX |  |
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| NDB-SS05 RC |  |
Specifications for the NDB-SS02 RX Monitor Receiver
| Frequency Range | 250 to 550 kHz (crystal or synthesizer controlled, user selectable) | |
| Frequency Stability | Better than 10 ppm | |
| Sensitivity | Better than 1μV for 10dB S/N | |
| Selectivity | Better than 80 dB for 25 kHz separation | |
| RF Input | 50 ohms | |
| Audio Output | 1 W to internal 8 ohm speaker, 600 ohm line output 0 to +10 dBm | |
| Power Input | 220 VAC 50 Hz ± 10% | |
| Dimensions | 19", 2U rack mount or table-top |
Specifications for the NDB-SS05 RC Remote Control
| Modulation | FSK | |
| Interface | Dial-up, leased line, direct RS-232 | |
| Parameters Monitored | Sub-unit AC/DC voltages, output current, output power, modulation, temperature | |
| Control Outputs | Transmitter selection (No 1 or No 2), system shut-down, antenna lights output, auxiliary output | |
| Power Input | 220 VAC 50 Hz ± 10% | |
| Dimensions | 19", 2U rack mount or table-top |
Standard Equipment
| NDB-SS05TX | TRANSMITTER (dual) including: - Battery Charger - Dummy Load - Testing instruments |
| NDB-SS02CU | ANTENNA COUPLER |
| NDB-SS05MAN | Operator's and Technical Manual |
Optional Accessories
| NDB-SS02AT1 | ANTENNA KIT type Τ (without masts and counterpoise i.e. ground radials) |
| NDB-SS02AT1-Μ | ΚΙΤ for Antenna masts and counterpoise |
| NDB-SS02RX | MONITOR Receiver |
| NDB-SS05RC | Remote Control Unit including software for PC/DOS type computer |
| NDB-SS02RVHF | ΟΝ/ΟFF Remote Control via Aircraft VHF transmitter |
| NDB-SS02SBAT | Battery SET |
| NDB-SS02ΑLIG | Antenna LIGHT |
List of Services Offered
| Training Pre-Installation Installation Post-Installation |
Operator, Maintenance Personnel Site survey and installation study Installation, Setting to work Preventive maintenance, After sales technical support |