The AE200-1925DB301 from Anatech Electronics is a RF Duplexer with Frequency DC to 400 MHz / 1.71 to 2.14 GHz, Band 1 DC to 400 MHz, Band 2 1.71 to 2.14 GHz, Attenuation 50 dB, Return Loss 15 dB. Tags: Module with Connectors. More details for AE200-1925DB301 can be seen below.