The WI-284-UDR-10H is an advanced, industrial-grade S-Band Sectoral Horn Antenna professionally engineered by Fei Teng Wireless Technology Co., Ltd. (FT-RF) for comprehensive altitude monitoring, wide-elevation signal security, and professional RF laboratory environments across the continuous 2.6 to 3.95 GHz frequency spectrum. Meticulously optimized to enforce exceptional spatial coverage accuracy, this premium horn antenna delivers a predictable nominal gain profile of 10 dBi combined with an exceptionally low maximum V.S.W.R threshold of 1.3 : 1. Precision CNC machined from high-grade aerospace aluminum alloy in Taiwan, the specialized sectoral launch geometry establishes a wide vertical footprint, providing a 92° E-plane -3dB beamwidth paired with a focused 28° H-plane horizon envelope. Equipped with a standardized precision UDR Waveguide Flange mating face with a standard WR-284 interface layout, this robust 1600g instrument ensures flawless, leak-free electromechanical coupling and safely manages continuous wave power loads up to 800 Watts (CW) with outstanding structural thermal stability. Its optimized structural integrity avoids destructive field distortion modes under complex tracking layouts, rendering it the definitive choice for altitude scanning matrices, automated antenna calibration setups, radar validation deployments, and mission-critical RF infrastructure arrays.