The FMV-232 from Metropole Products Inc. is a Diplexer with Frequency f1 30 to 174 MHz, Frequency f2 225 to 400 MHz, Power 600 W, Attenuation 35 to 80 dB, Attenuation f1 50 to 75 dB. Tags: Module with Connectors, Cavity. More details for FMV-232 can be seen below.