The FX3400NF from Sinclair Technologies is a Cross Band Couplers with Frequency 138 to 960 MHz, Frequency Band1 138 to 512 MHz, Frequency Band2 746 to 960 MHz, Insertion Loss Band1 0.4 dB, Insertion Loss Band2 0.4 dB. Tags: Module with Connector. More details for FX3400NF can be seen below.