The LDX-1732/2132-2 from Leader-MW is a RF Duplexer with Frequency 1.71 to 2.155 GHz, Band 1 1.71 to 1.755 GHz, Band 2 2.11 to 2.155 GHz, Insertion Loss 1 dB, Attenuation 60 dB. Tags: Module with Connectors. More details for LDX-1732/2132-2 can be seen below.