For the purpose of making the system more economic, given full compensation of
transmitter and receiver signal attenuation in the communication cable, the circuit
controlling transmitter enable/disable status, including a controllable power source
(control command converter) and a low pass filter separating a receive/transmit
UHF signal from a lower frequency up to direct voltage) signal, a number of control
commands, is introduced into mobile station, mobile station having autonomous power supply.
According to the first variant of the device, the control command, having
passed the low pass filter (19), enables the power source (21) control
from which power is supplied to the power amplifier (11) whose amplification
is selected so as to compensate attenuation of the transmitter signal traveling
from mobile station (1) to antenna (16). The voltage supplied from
the mobile station (1) via the communication cable is applied to a stabilizer
(22) via the other low pass filter (20) isolating the supply circuit
from radio frequency receive and transmit signals.
According to the second variant of the device, a splitter (23) and
rejector (24) are used in the duplex antenna amplifier (7). This
makes implementation of antenna amplifier simpler and cheaper.
