The QOT-10 from QuinStar Technology Inc is a Orthomode Transducer with Frequency 75 to 110 GHz, Insertion Loss 0.8 dB, Isolation 28 dB, Return Loss 13.98 dB, Antenna Waveguide Dimension 0.112 Inches (Diameter). More details for QOT-10 can be seen below.