The DMN41-1 is a center-fed, loop-type antenna which covers the frequency range of 329 to 335.3 MHz for use with glide slope receivers. When the antenna is mounted on a metal surface, from which there is a forward view, it provides a broad, single radiation lobe, pointing forward. The antenna structure consists of a rugged aluminum die casting. Because of the high signal output of the DMN41-1, it is well-suited for use with a coupler, such as the H24-1, for dual-receiver installations.