The FMA-298 from Metropole Products Inc. is a Diplexer with Frequency f1 2 to 174 MHz, Frequency f2 225 to 1950 MHz, Power 50 to 1260 W, Peak Power 1.2 kW, Attenuation 40 to 70 dB. Tags: Module with Connectors, Cavity. More details for FMA-298 can be seen below.