The DP-1220 from Maury Microwave is a Diplexer with Frequency f1 1.20 to 2 GHz, Frequency f2 2.40 to 4 GHz, Power 100 W, Insertion loss 0.4 to 1.5 dB, Insertion loss f1 0.4 to 0.7 dB. Tags: Module with Connectors. More details for DP-1220 can be seen below.