The D08281M3 from Microwave Circuits is a Diplexer with Frequency f1 243 to 270 MHz, Frequency f2 292 to 318 MHz, Power 25.0 W, Attenuation 40 to 80 dBc, Attenuation f1 40 to 80 dBc. Tags: Module with Connectors. More details for D08281M3 can be seen below.