The M20-20M Ka COM from General Dynamics Mission Systems is a Satellite Terminal with Antenna Size 20.5 Inches(Aperture Size), Azimuth Range 360 Degrees, Transmitter Frequency 29 to 30 GHz, Receiver Frequency 19.20 to 20.20 GHz, Axial Ratio 1 to 1.5 dB. More details for M20-20M Ka COM can be seen below.