| 摘要 |
<p>PURPOSE:To reduce a radio noise without use of a twisted pair cable. CONSTITUTION:In the communication system including a radio ECU 14, plural (e.g. 50Hz and 60Hz) frequencies are used for communication pulse waves. A noise in the communication pulses is caused for a predetermined interval of the communication pulse frequencies. When a radio band frequency received at present is notched with any of a noise frequency groups, the radio ECU 14 replaces the frequency of the communication pulse wave used at present with other pulse frequency to prevent production of a radio noise.</p> |
