The L5513 from Mercury Systems is a Diplexer with Frequency f1 1.567 to 1.583 GHz, Frequency f2 1.219 to 1.235 GHz, Insertion loss 0.45 dB, Frequency 1.567 to 1.583 GHz / 1.219 to 1.235 GHz, Isolation 60 dB. Tags: Module with Connectors, Cavity. More details for L5513 can be seen below.