Keywords: Feederanspeisung Nordmast Bisamberg.jpg Sender Bisamberg Feederanspeisung Transmission line emerging from the transmitter building of Sendeanlage Bisamberg a medium wave AM broadcasting station in Bisamberg near Vienna Austria It feeds radio power to the north antenna mast This type of transmission line is called a cage line It consists of a small circular bundle of parallel wires carrying the RF current surrounded by a larger circle of grounded wires which function as a shield to prevent the power from radiating off the inner wires as radio waves It functions similarly to a large version of a coaxial cable own original text selbst erstellt 1 2008-01 deneb Guandalug 11 12 22 Feb 2010 CET Deneb de Original upload log de wikipedia Wdwd CommonsHelper page de wikipedia Feederanspeisung_Nordmast_Bisamberg jpg 2010-01-27 12 22 Deneb 1024×768× 223468 bytes <nowiki> Andere Versionen </nowiki> Sender Bisamberg Cage lines |