The LDX-4500/4900-Q8S from Leader-MW is a RF Duplexer with Frequency 4.4 to 5 GHz, Band 1 4.4 to 4.6 GHz, Band 2 4.8 to 5 GHz, Insertion Loss 1.5 dB, Attenuation 70 dB. Tags: Module with Connectors. More details for LDX-4500/4900-Q8S can be seen below.