... -mode antenna units. vhf repeater, outdoor wireless repeater, radio repeater outdoor wireless vhf radio repeater (vhf repeater, outdoor wireless repeater, radio repeater) BJ-851 is ... duplexers and single set can be used as repeater also. It can be increase the communication ... ModeCPU Controller Receiving-Transmitting Frequency Setting Automatic Repeater Setting MIC and PTT control PC Programming ...