The L5647 from Mercury Systems is a Diplexer with Frequency f1 1.565 to 1.585 GHz, Frequency f2 1.217 to 1.237 GHz, Attenuation 80 dB, Insertion loss 0.8 dB, Frequency 1.565 to 1.585 GHz / 1.217 to 1.237 GHz. Tags: Module with Connectors, Cavity. More details for L5647 can be seen below.