VHF Air band Transceiver model MSA-8155
MSA-8155 is an air band digital transceiver for ground-air-ground communications in the frequency range 118 ÷ 136,975 MHz (air band), supporting AM and VDL (VHF data link) mode 2.
The new VDL mode 2 allows automatic transmissions between planes and ground stations, like short messages, position data, and communications between pilots and traffic controllers.
Adopting a technology based on microprocessor, the use of the transceiver (user-friendly approach) becomes extremely simple and its control is furnished of a self-diagnosis system on its operating conditions (Built In Test Equipment - BITE).
General Specifications
| Frequency range: | 118 ÷ 136,975 MHz (Civilian) 108 ÷ 155.975 MHz (Extended) |
| Channel spacing: | 8,33 kHz or 25 kHz |
| Modulation type: | AM (A3E) 8PSK (VDL mode 2) |
| Frequency accuracy: | Better than 0.5 ppm |
| Power supply: | 115 / 230 Vac ± 10% 18 ÷ 32 Vdc |
| Dimensions (h x w x d): | 88 x 482 x 440 mm (2 unity rack std 19'') |
| Weight: | 11 kg |
| Operating temperature: | -20° ÷ +55°C |
| Storage temperature: | -20° ÷ +55°C |
| Relative Humidity: | up to 95% (25° ÷ 55° C) |
Receiver's features
| Sensitivity: | -107 dBm @ 12 dB SINAD (118 ÷ 136.975 MHz) -105 dBm @ 12 dB SINAD (108 ÷ 152 MHz) |
| Adjacent channel rejection: | > 60 dB |
| Spurious emissions: | < 2 nW (-57 dBm) |
| SNR: | Better than 40 dB |
| Audio band: | 300 ÷ 3400 Hz @ 25 kHz 350 ÷ 2500 Hz @ 8.33 kHz |
| Intermodulation: | > 70 dB |
| Audio distortion: | ≤ 5% @ 30% modulation depth ≤ 10% @ 90% modulation depth |
| Audio output for loud-speaker: | 4 W / 4 Ω |
Transmitter's features
| RF power (carrier): | 1 W to 50 W |
| Max modulation depth: | 90% |
| Adjacent channel power: | Better than - 50 dBc @ 8,33 kHz Better than - 60 dBc @ 25 kHz |
| Spurious emissions: | ≤ -46 dBm |
| Audio band: | 300 ÷ 3400 Hz @ 25 kHz 350 ÷ 2500 Hz @ 8.33 kHz |
| Audio distortion: | ≤ 10% @ 90% modulation depth |
Features
- Standard 19’’ form factor
- 16-key keyboard and 128x64 graphics OLED display
- Remote control capability via serial port or IP (Ethernet)
- System of self-control and self-diagnosis (BITE)
- Possibility of connection with centralized system
- Interfaces: RS232, RS422, IP, E1 (optional)
- 600 Ω audio frequency line (input and output) and external PTT input for audio centralisation
- Possibility of 10 MHz external reference input
Standards
- EN 60950
- EN 60215
- EN 301 489-1
- EN 301 489-22
- EN 300 676-2
- EN 301 841-1
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