Broadcasting set comprising a rigid-dipole rotary antenna and rotating joint designed for this set

A broadcasting set formed by transmission means and a rotary antenna, the transmission means comprising two transmitters each with one output impedance matching unit and supply means for the antenna, the antenna comprising a support with a fixed base, a vertical mast, a bi-coaxial rotating joint positioned between the base and the mast, m, with m as a positive integer smaller than 3, vertical reflector curtains and n, with an as an integer and m.ltoreq.n<3, parallel vertical curtains of rigid dipoles fixedly joined to the mast, each associated with one of the reflector curtains, the supply means having two distinct channels that respectively leave the two transmitters, go to the joint and rise within the mast up to the level of the dipoles to respectively supply at least certain of the dipoles of two distinct vertical portions of the n curtains of dipoles, the channels each comprising a symmetrizer positioned in the mast, wherein a metal wall in said mast separates the two channels during their passage in the mast and wherein each of said channels has a channel switch in order to enable the choice of whether the distinct vertical portion will belong to either one of the curtains of dipoles, whereby two simultaneously transmissions are enabled from said rotary antenna.