| 摘要 |
PROBLEM TO BE SOLVED: To set a communication channel for radio communication through easy operation by reporting the setting state of a selected communication channel by a setting means when the communication channel is set. SOLUTION: When a setting switch 106 is set by switching a changeover switch 104, spread modulation is imposed on a video signal with PN series set previously corresponding to respective channels and the spread-modulated video signal is sent from an antenna 103. An LED 105 displays an error state, etc., at channel setting time and illuminates while a data channel is set with the changeover switch 104, and when the data channel is not free, namely, when another radio communication terminal already tries to set it or is using, the LED blinks for warning. |
