The FA-2C-122 from Metropole Products Inc. is a Diplexer with Frequency f1 4400 to 4950 MHz, Frequency f2 5250 to 5850 MHz, Insertion loss 1.1 to 1.7 dB, Insertion loss f1 1.1 to 1.6 dB, Insertion loss f2 1.3 to 1.7 dB. Tags: Module with Connectors, Cavity. More details for FA-2C-122 can be seen below.