| 摘要 |
PROBLEM TO BE SOLVED: To provide an adaptor for radio communication in which a speech is made by utterance only while the adaptor has only to be fitted to a portable telephone set, where it is not required to hold the portable telephone set directly by hand and a received signal by the portable telephone set is heard as a voice by using an existing radio signal receiver. SOLUTION: The adaptor is provided with a connector plug 4 plugged into a connector socket 3 of a portable telephone set 2, a sound pickup microphone MIC and with a circuit means that amplifies and modulates a reception signal sent from the portable telephone set 2, sends a frequency modulation signal in a radio wave, amplifies the voice signal sent from the sound pickup microphone MIC and outputting the amplified signal to the portable telephone set 2. |
