A simplified multiple-track range airborne equipment

The paper describes a simple light-weight multiple-track range airborne equipment suitable for installation in small aircraft. When associated with the appropriate ground-station installation it provides the pilot with accurate azimuthal track guidance for a range of 100 miles at 5 000 ft, and/or a localizer path for use during final approach to a runway, which is accurate to at least ± 22 yd at the normal touch-down point.