| 摘要 |
<p>PURPOSE:To obtain a communication equipment capable of simultaneous talking with simple structure, small in size and excellent in portability by providing a sub communication equipment possible for portability with a smaller output from a main communication equipment. CONSTITUTION:The communication equipment consists of the main communication equipment 1 and the sub communication equipment 2. An antenna 100 of the main communication equipmen 1 is connected to the 1st transmitter 110 and the 1st receiver 120 via 3 sets each of high frequency relays and BPFs. The output of a microphone circuit 127 and the 2nd reception circuit 128 is given to the input to the 1st transmitter 110 via a changeover switch 129. The output of the 1st receiver 120 is given to a speaker 139 and the 2nd transmitter 140 via a changeover switch 138. An antenna 200 of the sub communication equipment 2 is connected respectively to a sub transmitter 203 and a sub receiver 204 via a BPF. A controller 300 of the main communication equipment 1 is controlled to attain simultaneous talking between main communication equipments, that between main and sub communication equipments and simultaneous talking between inside and outside of a vehicle while the sub communication equipment is carried to the outside of the vehicle.</p> |
