RF horn and waveguide family used for EMC/antenna measurements across wide frequency ranges. Product distributed by Reliant EMC. A-Info Double Ridge Waveguide Switch is designed for professional EMC testing workflows, delivering reliable performance for emissions and immunity evaluations. Typical applications include pre-compliance, debug, and certification support across automotive, aerospace, medical, and industrial sectors. Engineered for accuracy and repeatability, it integrates smoothly with lab automation and common EMC standards. Keywords: EMC testing, EMI/EMS compliance, RF immunity, radiated & conducted emissions, IEC/EN 61000, CISPR.