The PDC-34283140-01 from Ducommun is a Waveguide Diplexer with Bandwidth 700 MHz, Center Frequency 27.75 GHz / 31.15 GHz, Frequency 27.4 to 28.1 GHz / 30.8 to 31.5 GHz, Frequency Band1 27.4 to 28.1 GHz, Frequency Band2 30.8 to 31.5 GHz. More details for PDC-34283140-01 can be seen below.