The L5215 from Mercury Systems is a Diplexer with Frequency f1 1560.42 to 1590.42 MHz, Frequency f2 1212.6 to 1242.6 MHz, Attenuation 30 dB, Attenuation f1 30 dB, Attenuation f2 30 dB. Tags: Module with Connectors, Cavity. More details for L5215 can be seen below.