BOOSTER RADIO RELAY SYSTEM

摘要

PURPOSE:To attain the use of a small-output amplifier while preventing cross modulation distortion from being produced by setting a repeater corresponding to each radio channel in an incoming line to perform relaying. CONSTITUTION:An electric field detector 7 supervises an incoming line signal to detect a frequency f4' of a radio channel signal received at a preset specific level or over and transmits the signal to a radio channel controller 8. On the other hand, a selection individual amplifier 6 makes an intermediate frequency pass band constant to change the oscillating frequency of a local carrier wave source 15 of transmission and reception frequency converters 11 and 13 thereby setting a relay channel to an optional frequency, and the controller 8 sets the relay channel to the frequency f4'. Then, the incoming line in the frequency f4' is connected but an outgoing line is connected by an outgoing line repeater 5 to realize incoming and outgoing channels between a mobile station and a base station via a booster station.