The HA-0218GA2-NF is a laboratory-grade, high-performance Double Ridged Broadband Waveguide Horn Antenna professionally engineered by Fei Teng Wireless Technology Co., Ltd. (FT-RF) for continuous, wideband microwave transmission and calibration routines across the 2 GHz to 18 GHz spectrum. By employing an advanced double-ridged internal profile architecture, this antenna effectively overcomes the high-frequency cutoff limits of standard rectangular horns, providing an exceptionally smooth impedance transformation and maintaining consistent Signal Integrity throughout its massive bandwidth. High-precision manufactured from structural aluminum alloy in Taiwan, the radiator yields an impressive directive gain profile ranging from 6 to 18 dB, achieving a maximum peak efficiency of 20 dBi alongside a highly concentrated 18-degree symmetric beamwidth pattern. Integrated with a robust stainless steel (SUS) N-Female coaxial launcher port, this robust 1.8 kg instrument flawlessly manages continuous wave input limits up to 120 Watts CW and peak impulse capacities of 800 Watts. It stands as the definitive, traceable choice for wideband EMC/EMI compliance sweeps, automated spectrum monitoring networks, tactical radar benchmarking installations, and high-fidelity laboratory verification arrays.