The RDUP-824-849M-869-894M-8022-20W-S-f12 from Raditek is a RF Duplexer with Frequency 824 to 849 MHz / 869 to 894 MHz, Band 1 824 to 849 MHz, Band 2 869 to 894 MHz, Power 20 W, Insertion Loss 2.0 dB. Tags: Surface Mount, Ceramic. More details for RDUP-824-849M-869-894M-8022-20W-S-f12 can be seen below.