The FMA-293A from Metropole Products Inc. is a Diplexer with Frequency f1 225 to 280 MHz, Frequency f2 320 to 400 MHz, Power 100 W, Attenuation 60 to 90 dB, Attenuation f1 60 to 90 dB. Tags: Module with Connectors, Cavity. More details for FMA-293A can be seen below.