The 500MHz to 8GHz Double Ridged Broadband Horn Antenna is a premium precision instrument engineered and manufactured by Fei Teng Wireless Technology Co., Ltd. (FT-RF) for wide-spectrum RF validation and heavy-duty microwave applications. Boasting an incredible extended frequency response starting from 500 MHz up to 8000 MHz, this antenna covers the UHF, L, S, and C bands continuously within a single unit. Precision CNC-machined from premium structural 6061 Aluminum alloy panels with an integrated DC Short static leakage circuit, it reliably handles massive power loads up to 800 Watts peak power and 600 Watts of continuous wave (CW) input, protecting high-value downstream connected receivers and measurement instrumentation from transient surges. Equipped with a high-durability stainless steel N-Female coaxial connector interface, its optimized physical geometry ensures a stable, uniform gain profile ranging from 3 dBi to 17 dBi, low VSWR performance, and exceptional directional control, making it the premier choice for laboratory EMI/EMC compliance sweeps, advanced antenna characterization, and professional directional signal monitoring arrays.