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Station Radio
Introduction
Key functions:
1. communicate with the watcher, other drivers and the chief conductor at the common/ alien frequency, and communicate with the dispatcherby the station radio.
2. simplex communication at the alien frequency in the tunnel.
3. The push-to-talk button of the telephone transmitter is light-operated switch, and the hang-up button is electronic switch with thefunction of automatic reset when hold on.
4. Provide record, running number, train tail wind pressure interfaces   and detect function when train put in-and-off vehicle stopping place.
5. the controlling box provide the volume controlling , the frequencies  group selecting buttons with the corresponding light display, conveni-ence to use.
Primary technical characteristics
1. Transmitter:
   carrier output power: 5W10W 
modulation sensitivity: 484dBm
modulation limitation: 5KHz
carrier frequency tolerance: ܡ5ppm
modulation characteristic: +1-3dB
residual frequency modulation: 40dB
audio frequency distortion: 5
2. Receiver:
   reference sensitivity: 0.6V
carrier quieting sensitivity: 0.55Vtunable
audio output power: 5W/8(loudspeaker output)
radio of the signal power to the residual power: 40dB
audio frequency distortion: 5
Introduction
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MOBILE
COMMUNICATION
DEPARTMENT
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022-26237698
   
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