The AD2510-2680D371 is a Cavity Duplexer with a bandwidth of 20 MHz on both bands and features SMA Female connectors. This Duplexer has an insertion loss of 1.0 dB Max and a return loss of 15 dB Min. For more information, click here. Datasheet: 2500-2520 MHz / 2670-2690 MHz Cavity Duplexer (anatechelectronics.com)