Image: Moosbrunn SW Antenna

Description: Short wave broadcasting antenna at the Moosbrunn transmitting station of the Austrian Broadcasting Service (Österreichischen Rundfunksender GmbH, ORS), Moosbrunn, Austria. This is a curtain antenna, a high gain directional wire antenna used on the high frequency (HF) bands by shortwave broadcasting stations for long distance international broadcasting. It consists of an array of wire dipoles fed in phase, in front of a vertical "curtain" reflector consisting of closely spaced parallel wires. It radiates a unidirectional beam of radio waves at a shallow angle above the horizon. The radio waves are reflected by the ionosphere back to earth beyond the horizon to cover a listening area in another country. In this example the entire antenna is mounted on a truss that rotates on a spindle, allowing the direction of the beam to be changed.
Title: Moosbrunn SW Antenna
Credit: Own work
Author: Peter Knorr
Permission: Public domainPublic domainfalsefalse I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No