The TPRD-1566 from Telewave is a RF Duplexer with Frequency 148 to 174 MHz, Power 350 W, Insertion Loss 1 to 2 dB, Isolation 100 to 115 dB, Operating temperature -30 to 70 Degree C. Tags: Module with Connectors. More details for TPRD-1566 can be seen below.