The AE182-440DB5375 from Anatech Electronics is a RF Duplexer with Frequency 121 to 243 MHz / 380 to 500 MHz, Band 1 121 to 243 MHz, Band 2 380 to 500 MHz, Power 50 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for AE182-440DB5375 can be seen below.