PURPOSE: To provide a communication equipment capable of transmitting different channels to two artificial satelites by time-dividing the whole output power of one power amplifier.

CONSTITUTION: The base-band signals 1 of CH1 to CHn are duplicated on a time axis in a duplicating equipment 2 by a time division controller 9. Afterwards, a modulation equipment 3 superimposed the signals into a high frequency signal, the power amplifier 4 inputs it and a time division controller 9 controls a signal switching part consisting of a first four-terminal directional coupler 6, a variable phase shifter 7 and a second four-terminal directional coupler 8 with the duplicating equipment 2. Thus, the whole output of the power amplifier of the optional channels of an input signal 1 can be selected/sent to a transmission antenna 10 or 11 and transmitted to a first communication system consisting of a first artificial satelite 12 and a receiver 14 and the second communication system consisting of a second artificial satelite 13 and a receiver 15.