RF Dummy Load for testing purposes on a short wave transmitter at the Moosbrunn transmitting station of the Austrian Broadcasting Service (Österreichischen Rundfunksender GmbH, ORS), Moosbrunn, Austria. Uses a sodium hydroxide solution as a thermal absorber for the RF. A circulation pump is used for heat dissipation via external heat exchangers. It can dissipate up to the full 100 kW output power of the transmitter.