The DPX75K-003 from Optim Microwave is a Waveguide Diplexer with Frequency 10.95 to 12.75 GHz (Rx) / 13.75 to 14.5 GHz (TX), Frequency Band1 10.95 to 12.75 GHz (Rx), Frequency Band2 13.75 to 14.5 GHz (TX). More details for DPX75K-003 can be seen below.