The USD026A from CTS Electronic Components is a RF Duplexer with Frequency 814 to 894 MHz, Band 1 859 to 894 MHz, Band 2 814 to 849 MHz, Power 6 to 60 W, Insertion Loss 2.6 to 2.6 dB. Tags: Ceramic, Surface Mount. More details for USD026A can be seen below.