The TS-4770 from Telewave is a Cross Band Couplers with Frequency 470 to 869 MHz, Frequency Band1 470 to 512 MHz, Frequency Band2 763 to 869 MHz, Insertion Loss Band1 0.2 dB, Insertion Loss Band2 0.2 dB. Tags: Module with Connector. More details for TS-4770 can be seen below.