Shortwave broadcasting antenna at the Moosbrunn shortwave transmitting station of the Austrian Broadcasting Service (Österreichischen Rundfunksender GmbH, ORS),  Moosbrunn, Austria.  This is a <a href="https://en.wikipedia.org/wiki/curtain_antenna" class="extiw" title="w:curtain antenna">curtain antenna</a>, consisting of multiple wire dipole elements in front of a vertical curtain reflector of parallel wires.  It radiates a beam of radio waves at a shallow angle above the horizon, which is reflected by the ionosphere and returns to Earth beyond the horizon.  The entire antenna is mounted on a truss which turns on a spindle so it can be turned to different directions.
Peter Knorr
<span class="int-own-work" lang="en">Own work</span>