The HA-04M07G-NF is a high-performance Double Ridged Broadband Waveguide Horn Antenna professionally engineered and manufactured by Fei Teng Wireless Technology Co., Ltd. (FT-RF) for demanding microwave measurement loops and tactical operations. Operating across a multi-octave ultra-broadband frequency spectrum within the continuous 400 MHz to 7 GHz range, this premium antenna provides excellent pattern symmetry and stable gain flatness across its full operating bandwidth. Precision CNC-machined from aerospace-grade 6061 Aluminum Alloy with an integrated DC Short static leakage path, it delivers an optimized low VSWR performance profile while protecting high-value connected receivers and measurement instrumentation from transient electrical surges. Equipped with a high-durability stainless steel N-Female coaxial interface connector, this industrial-grade radiator ensures minimal insertion loss, superior structural rigidity, and long-term co-polarization stability, making it the definitive reference standard for laboratory EMI/EMC compliance sweeping, automated antenna measurements, and professional Signal Defense infrastructure configurations.