The LDX-2570/2650-Q6S from Leader-MW is a RF Duplexer with Frequency 2.57 to 2.7 GHz, Band 1 2.57 to 2.635 GHz, Band 2 2.65 to 2.7 GHz, Insertion Loss 1 dB, Attenuation 50 dB. Tags: Module with Connectors. More details for LDX-2570/2650-Q6S can be seen below.