The TS-1546 from Telewave is a Cross Band Couplers with Frequency 132 to 512 MHz, Frequency Band1 132 to 174 MHz, Frequency Band2 450 to 512 MHz, Insertion Loss Band1 0.2 dB, Insertion Loss Band2 0.2 dB. Tags: Module with Connector. More details for TS-1546 can be seen below.