The AD410-438D383 from Anatech Electronics is a RF Duplexer with Frequency 406 to 414 MHz / 434 to 442 MHz, Band 1 406 to 414 MHz, Band 2 434 to 442 MHz, Power 50 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for AD410-438D383 can be seen below.