The FMA-297P1 from Metropole Products Inc. is a Diplexer with Frequency f1 243 to 270 MHz, Frequency f2 291 to 318.3 MHz, Power 120 W, Attenuation 35 to 90 dB, Attenuation f1 35 to 90 dB. Tags: Module with Connectors, Cavity. More details for FMA-297P1 can be seen below.