The LDX-1880/1960-1 from Leader-MW is a RF Duplexer with Frequency 1.85 to 1.99 GHz, Band 1 1.85 to 1.91 GHz, Band 2 1.93 to 1.99 GHz, Insertion Loss 1 dB, Attenuation 75 dB. Tags: Module with Connectors. More details for LDX-1880/1960-1 can be seen below.