The USD005A from CTS Electronic Components is a RF Duplexer with Frequency 824 to 894 MHz, Band 1 869 to 894 MHz, Band 2 824 to 849 MHz, Power 6 to 60 W, Insertion Loss 2.6 to 2.6 dB. Tags: Ceramic, Surface Mount. More details for USD005A can be seen below.