The FDPL4020S4-NC from Radio Frequency Systems is a Diplexer with Frequency f1 1.85 to 1.995 GHz, Frequency f2 1.695 to 2.7 GHz, Power 200 W, Attenuation 40 dB, Attenuation f1 40 dB. Tags: Module with Connectors, Cavity. More details for FDPL4020S4-NC can be seen below.