| 摘要 |
PURPOSE:To use a radio receiver for many kinds of applications such as wireless microphone by connecting an earphone terminal to be connected to the output of a reception circuit to the modulation input of a transmission circuit via a resistor. CONSTITUTION:A signal receiving a broadcast radio wave from an antenna 1 at a reception circuit 3 is received by an earphone via an earphone terminal by throwing transmission/reception changeover switches SW4a, 4b to the position R. In the transmission mode where the SW4a, 4b are thrown to the position S, the terminal 6 is connected to a modulation input 9 of a transmission circuit 2 via resistors 7b, 7c, the terminal 6 acts like an external modulation input terminal and a signal such as music signal is transmitted by connecting the output of a device such as a player to the terminal 6. Further, a selection SW8 selects the changeover of a microphone and an external signal and the mixing between the output of the microphone 5 and the external signal. |
