The TPCD-1556 from Telewave is a RF Duplexer with Frequency 148 to 174 MHz, Power 350 W, Insertion Loss 1.5 dB, Isolation 63 to 75 dB, Operating temperature -30 to 70 Degree C. Tags: Module with Connectors. More details for TPCD-1556 can be seen below.