The Freinberg Transmitter is a broadcasting transmitter on the Freinberg near Linz. It was established in 1928 as medium wave broadcasting station and used until 1936 a T-antenna, which hung up on two guyed masts, which were 45 metres tall.
In 1936, the T-antenna was replaced by a 165 metre tall mast, insulated against ground.
In summer 1950, the antenna mast was shortened to 120 metres, because it was too long for the new frequency and would have a bad radiation diagram.
Wikipedia https://en.wikipedia.org/wiki/Freinberg_Transmitter
Address 24 Freinbergstraße, Linz 4020, Austria
Coordinates 48°17'50.483" N 14°16'2.616" E