| 摘要 |
The repeater is provided for totally resolving the dead of an AM/FM broadcasting signal having a digital character signal, a pager signal, a bidirectional cellular signal in an underground compartment, and includes a land receiving antenna, a pre-amplifier, an antenna distributer, an AM transmitter, an FM transmitter, first/second pager transmitters, a land transmitting/receiving antenna, a bidirectional cellular transmitter, first/second distributers, a resistance antenna and a wireless signal connector, in order to receive not only the existing AM/FM radio broadcasting signal, but also a repeating of a radio signal in mobile communication devices.
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