The WI-62-UBR-10 is a laboratory-grade Standard Gain Waveguide Horn Antenna professionally engineered by Fei Teng Wireless Technology Co., Ltd. (FT-RF) for high-precision microwave measurements and system calibration routines. Operating continuously across the 12.4 GHz to 18.0 GHz frequency range, this premium aperture antenna features an optimized pyramidal geometry that achieves highly stable directional radiation patterns, delivering a flat nominal gain profile of 10 dBi with symmetric 54° beamwidth performance in both H and E planes. Meticulously manufactured from high-grade structural aluminum alloy in Taiwan, its ultra-lightweight 28 g micro structural layout acts as an uncompromised mechanical architecture that preserves strict Signal Integrity under continuous high-power duties up to 500 Watts (CW). Equipped with a standardized rectangular WR-62 waveguide input interface and a square UBR UG-2664/U flange, it ensures seamless, low-loss integration into existing waveguide assemblies, wireless anechoic chambers, satellite ground equipment, and traceable laboratory calibration setups.