The WVC-757D787.5-21M01 from Wevercomm is a RF Duplexer with Frequency 746 to 768 MHz / 777 to 798 MHz, Band 1 746 to 768 MHz, Band 2 777 to 798 MHz, Power 40 W, Insertion Loss 1 to 1.3 dB. Tags: Module with Connectors. More details for WVC-757D787.5-21M01 can be seen below.