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GROUP TWO-WAY RADIO SYSTEM FOR PROVIDING TEMPORARILY EMERGENTLY EXPANDING COMMUNICATION RANGE AS A PORTABLE DISPATCH SYSTEM WITH NO AVAILABLE SIGNAL REPEATER INVOLVED
GROUP TWO-WAY RADIO SYSTEM FOR PROVIDING TEMPORARILY EMERGENTLY EXPANDING COMMUNICATION RANGE AS A PORTABLE DISPATCH SYSTEM WITH NO AVAILABLE SIGNAL REPEATER INVOLVED
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机译:组双向无线电系统,用于临时扩展通信范围,作为不涉及信号中继器的便携式调度系统
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摘要
A portable or vehicle radio of a two-way radio system for use by a group is generally in direct call mode as a generic radio. Once a communication range is needed to be expanded under a condition of no available repeater, a group commander is able to designate a two-way radio most suitable for functioning as a signal repeater according to GPS location through over-the-air programming or manual control to expand the communication range. The signal repeater retransmits signals being received through time division multiple access (TDMA) over a same channel at different time slots that provides a function of expanding a communication range as a conventional dual-band repeater transmitting signals over uplink and downlink bands does. Therefore, the present invention functions as a generic radio, so as to become a mobile disposal system for providing temporary, emergent and expanded communication range when an emergency is occurred.
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