The AD2222-2277D254 from Anatech Electronics is a RF Duplexer with Frequency 2210 to 2235 MHz / 2269 to 2285 MHz, Band 1 2210 to 2235 MHz, Band 2 2269 to 2285 MHz, Insertion Loss 2 dB, Isolation 90 dB. Tags: Module with Connectors. More details for AD2222-2277D254 can be seen below.