... mini duplex and single-mode antenna units. repeater vhf, signal transfer, repeater outdoor Quanzhou Baojie Electronics Co.,Ltd Dongmen Industrial ... www.baojie.en.alibaba.com the latest signal repeater vhf outdoor (repeater vhf, signal transfer, repeater outdoor) BJ-851 is ... and single-mode antenna units which consists of duplexer, receiver, transmitter, CPU controller ect. CTCSS and DCS are built in. ...