In this video, David from our tech department at Buy Two Way Radios explains what a duplexer is, how it actually works, and some common failure points.
XLT Communications GMRS Mobile Duplexer (50 Watt)
https://www.buytwowayradios.com/xlt-dp-gmrs-50.html
TX RX Systems Vari-Notch Rack Mount Duplexer (450-470 MHz, 5 MHz Split)
https://www.buytwowayradios.com/rxtx-28-70-02a.html
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