| 摘要 |
PURPOSE:To communicate with a receiver even when the receiver is separated from a radio equipment provided in an automobile, etc., by calling an instruction receiver from the radio equipment receiving a call. CONSTITUTION:When an A issues the call from the radio equipment 1 to the radio equipment 2 with an ordinary procedure, the A judges that a B is absent if the B is separated from the automobile, and the A operates a tone oscillator 13 by closing a switch 14, and transmits the wave of a call code fo. When the detecting part 24 of the radio equipment 2 detects the wave, the fact is informed to a delaying and holding circuit 25. Thereby, the delaying and holding circuit 25 switches a switching part 22 t0 a transmission side, and transmits the wave on which a call code f1 is attached from a tone oscillator 23. The instruction receiver receiving the the code f1 generates a call tone, and informs an incoming call to the B. |
