Reversible duplexesEach AF-11FX can be configured to operate at any acceptable frequency by simply changing duplexers - it requires one or two duplexes (sold separately: AF-11FX-DUP-H and AF-11FX-DUP-L models) within 10.7 - 11.7 GHz. Each duplexer has a low and a high channel, which can be...