The AD454-464D275-S from Anatech Electronics is a RF Duplexer with Frequency 452.5 to 457.475 MHz / 462.5 to 467.745 MHz, Band 1 452.5 to 457.475 MHz, Band 2 462.5 to 467.745 MHz, Insertion Loss 1.5 dB, Isolation 30 dB. Tags: Module with Connectors. More details for AD454-464D275-S can be seen below.