Ubiquiti AirFiber 11FX Low-Band Duplexer
The AF-11FX features a unique modular duplexer design to suit multiple frequency configurations.
Each AF-11FX radio can be configured to support any allowable frequency by simply changing the duplexers for high-band or low-band use in the 10.7 - 11.7 GHz allocation.
Each duplexer has a low channel and a high channel connector. It allows to simply configuration of Tx and Rx frequencies using the same model of duplexer on each side of radio link - reversing the position of the duplexer allows to fit the frequencies of both devices.