The TPRD-4546 from Telewave is a RF Duplexer with Frequency 400 to 512 MHz, Power 250 W, Insertion Loss 1.75 to 2 dB, Attenuation 85 to 95 dB, Operating temperature -30 to 70 Degree C. Tags: Module with Connectors. More details for TPRD-4546 can be seen below.