| 摘要 |
PURPOSE:To enable emergent communication, by providing the channel selecting means where the radio set is tuned to an arbitrary channel, and automatically selecting the channel when scheduled event is caused with this selective means. CONSTITUTION:The radio set which is constituted to be tuned to an arbitrary radio frequency among a plurality of radio frequencies assigned to a plurality of channels, is provided with the device which tunes the radio set automatically to one channel at the production of scheduled event. This device is provided with an operating means 92 producing the control signal according to the production of the scheduled event by supporting a microphone 18 of the radio set to the housing. Further, a programmable divider tuning the radio set to an arbitrary channel, and a channel selective means 60 including the display decoder circuit 64 and the phase comparator 66 are provided, and the automatic channel alteration device 90 consisting of the condition deciding means 94 which decides the conditions in tuning the scheduled channel and the operating means 92 are combined to the means 60, allowing automatically to select the channel. |
