The Sinclair MR456N-2-1 746 – 806 MHz six-cavity mobile duplexer with N Female. This compact duplexer is fabricated from lightweight, rugged aluminum extrusion, which affords maximum structural integrity. Carefully temperature-compensated resonators are designed to minimize variations due to changing operating environments. This duplexer provides superior performance for trunking and conventional applications, and may also be used as low-power base station duplexers.