The PDC-28383940-01 from Ducommun is a Waveguide Diplexer with Bandwidth 350 MHz, Center Frequency 37.5 GHz / 38.5 GHz, Frequency 37.33 to 37.68 GHz / 38.33 to 38.68 GHz, Frequency Band1 37.33 to 37.68 GHz, Frequency Band2 38.33 to 38.68 GHz. More details for PDC-28383940-01 can be seen below.