| 摘要 |
PURPOSE:To attain correspondence with other radio equipment via a transmission/ reception section at a location apart from a radio equipment main body by providing additionally the transmission/reception section to the radio equipment main body of 900MHz and providing a sub radio equipment possible for correspondence with the transmission/reception section. CONSTITUTION:The 900MHz band radio equipment main body 19 having an antenna 1, a transmission/reception switch 2, a transmission system 18, a reception system 3 and a control section 5 or the like is provided with the transmission/reception section 20 having an antenna 26, an antenna switching section 35, a tone detection section 31 and a modulation section 22 or the like. Further, the sub radio equipment 40 is provided with a location apart from the main body 19, the transmission/reception changeover switch 42 is switched by the operation of an external transmission switch 43 to transmits an FM modulation wave from the antenna 41 thereby making correspondence with the transmission/reception section 20 of the main body 19. The each section of the transmission/reception 20 is driven by the control of the control section 5 of the main body 19 and the correspondence with other radio equipment is attained by using the device 40 arranged at a location apart from the main body 19. |
