Broadband high frequency sky-wave antenna

A broadband antenna system comprising a pair of support lines, one of said support lines being horizontal and the other at a vertical angle of 30.degree..+-.5.degree. to the horizontal, a length of antenna wire strung continuously between said support lines in a vertical zig-zag manner so as to present a plurality of interconnected inverted-V sections, said plurality being equal to ten.+-.two, the legs of each inverted-V section meeting at the ends thereof with the ends of the legs of inverted-V sections immediately adjacent thereto, each inverted-V section providing a spatial phase reversal to the current from leg-to-leg, the angle between adjacent legs of the inverted-V sections being a constant equal to 30.degree..+-.5.degree., impedance matching transformer means for coupling input signals to the shortest of the inverted-V sections, resistance means connected to the tallest of the inverted-V sections for terminating the antenna in its characteristic impedance, and counterpoise means coupled to said resistance means and said transformer means and serving to balance the zig-zag antenna.