The WI-430-UDR-15E is a precision-engineered L/S-Band E-Plane Sectoral Horn Antenna professionally designed and manufactured by Fei Teng Wireless Technology Co., Ltd. (FT-RF) for specialized wide-horizontal illumination fields. Operating across the continuous 1.72 GHz to 2.60 GHz frequency band, this premium antenna is expertly flared in the E-plane to deliver a distinct, highly predictable Fan-Beam radiation pattern profile (112° H-plane x 18° E-plane) combined with a calibrated nominal gain of 15 dBi. Featuring a Direct Waveguide Input interface with a standardized UDR Style flange mating face, it ensures flawless structural impedance coplanarity and ultra-low-loss power transfer, safely managing continuous wave power loads up to 1000 Watts (CW). Precision CNC machined from high-grade structural alloy in Taiwan, it exhibits exceptional electromechanical longevity, a robust 3.2 kg footprint, and excellent pattern stability metrics combined with an exceptionally low maximum V.S.W.R threshold of 1.3 : 1. It stands as the definitive choice for wide-horizontal beam scanning grids, automated antenna characterization ranges, industrial EMI/EMC compliance validation scanning, professional wireless communication research, and mission-critical satellite link verification setups demanding uncompromised performance parameters.