The HS-159-UDR-10H-NF is a high-performance sectoral standard gain horn antenna professionally engineered and manufactured by Fei Teng Wireless Technology Co., Ltd. (FT-RF) in Taiwan for mission-critical altitude tracking and high-power C-band monitoring systems. Operating continuously across the 4.9 GHz to 7.05 GHz range, this specialized antenna features a broad 99° vertical E-plane beamwidth profile optimized for wide-elevation signal capture and altitude diagnostic matrices. Precision CNC-machined from premium structural aluminum alloy with a standard WR-159 / UDR flange configuration, it delivers a stable 10 dBi typical gain profile with exceptionally low signal insertion loss. Outfitted with an upgraded high-durability stainless steel SUS-303 N-Female connector interface, this lightweight 980g radiator reliably handles heavy-duty continuous wave (CW) inputs up to 380 Watts while maintaining a superb maximum VSWR profile of 1.25 : 1. It serves as the definitive reference standard for high-accuracy anechoic chamber field strength sweeps, professional telecommunication testing ranges, and advanced Signal Defense sub-systems.