The CER0849C from CTS Electronic Components is a RF Duplexer with Frequency 2.5 to 2.69 GHz, Band 1 2.62 to 2.69 GHz, Band 2 2.5 to 2.57 GHz, Power 3 to 30 W, Insertion Loss 2.6 to 2.6 dB. Tags: Ceramic, Surface Mount. More details for CER0849C can be seen below.