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The Universal Train Set
Introduction
The general wireless dispatching cab radio is fixed in the cab for  the driver, it adopts the GPS receiver and is compatible with all the   operating mode of the B and C SYS cab radio. It could realize the    simplex communication among the station watcher, other drivers and 
the chief conductor at the alien frequencies, furthermore, it could communicate with the controller via the station radio for the connection   among the controller, the station, other train and the chief conductor.  It provide the record, running numbers, the train tail wind pressure    data and the GPS data interfaces to collect and output the GPS original data.
Primary technical characteristics
1.communication mode:
 driverdispatcher   alien frequencies and duplex/common frequency and simplex
driverstation    alien frequencies and simplex/common frequency and simplex
driverdriver     alien frequencies and simplex/common frequency and simplex
2. modulation mode: 16F3E
3. Channel spacing25Hz
4Antenna impedance: 50
5. transmitter:
    carrier output power: 5W10W 
modulation sensitivity: 484dBm
modulation limitation: 5KHz
carrier frequency tolerance: ܡ5ppm
residual frequency modulation: ܣ40dB(1KHz60 is modulated)
audio frequency distortion: 5(1KHz60is modulated)
stray radio frequency component: 5W
6. receiver(simplex/duplex):
reference sensitivity:   0.6V12dB  SINAD
carrier quieting sensitivity:  0.65Vtunablerestore factory     setting is 1V
intermodulating immunity:  65dB
adjacent channels selection:  65dB
audio output power:  5W/8(loudspeaker output)
radio of the signal power to the residual power: ܣ40dB         (1KHz  60 is modulated)
audio frequency distortion:   5 (1KHz60 is modulated)
duplex sensitivity: 3 dB lower than the simplex sensitivity is not   allowed.
Introduction
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