The CFDM-221000510 from Filtronetics is a RF Duplexer with Frequency 2207.5 to 2292.5 MHz, Band 1 2207.5 to 2212.5 MHz, Band 2 2287.5 to 2292.5 MHz, Power 3 W, Insertion Loss 1.7 to 2 dB. Tags: Surface Mount. More details for CFDM-221000510 can be seen below.