It was sited approximately 3 kilometres (1.9 mi) northwest of Heilsberg (known after 1946 as Lidzbark Warmiński), on the road to Preußisch Eylau (Bagrationovsk).
In 1935, the transmitting power was increased to 100 kilowatts and the vertical cage aerial was replaced by a dipole with top capacity and coil, which was carried by a 115 metres (377 ft) high free-standing wood tower.
In 1940, this was replaced with a 151 metres (495 ft) high guyed mast of square cross section lattice steel, which was insulated against ground.
In addition, a triangle plane antenna and a 50 metres (160 ft) high guyed mast (also insulated against ground) were installed.
A shortwave facility for cross-border skywave jamming beamed towards the Soviet Union, Czechoslovakia and Bulgaria has existed in Lidzbark Warmiński.