The antenna mast is a girder mast which has been developed especially for the Doppler antenna system RTA 1300, which makes possible the turning and titling of the antenna for Assembly and maintenance purposes. The mast will be delivered in disassembled condition. It has to be mounted and grounded after the assembly on a suitable base. The scope of delivery also includes a waterproof Installation box, in which the receiver unit and remote data Transmission can be located. All parts of the mast and the bolted connections are hot-dip galvanized or respectively made out of stainless steel.