The LDX- 3500/5800-1 from Leader-MW is a RF Duplexer with Frequency 3.4 to 5.9 GHz, Band 1 3.4 to 3.6 GHz, Band 2 5.7 to 5.9 GHz, Insertion Loss 1.5 dB, Attenuation 30 dB. Tags: Module with Connectors. More details for LDX- 3500/5800-1 can be seen below.