The WVC-403D449-6M01 from Wevercomm is a RF Duplexer with Frequency 400 to 406 MHz / 446 to 452 MHz, Band 1 400 to 406 MHz, Band 2 446 to 452 MHz, Power 700 W, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for WVC-403D449-6M01 can be seen below.