A support for at least two panel antennas constituting relay antennas in at least one cellular telecommunications network, the support comprising a mast (1) and means for fixing said two antennas to the mast (1), said means being suitable for allowing the orientation of said antennas to be adjusted in tilt and in azimuth, the support being characterized in that said fixing means comprise, for at least one antenna (2), means (21) that define for said antenna a pivot pin (31) that is eccentric relative to the axis of the mast (1) and such that pivoting the antenna (2) about said pin enables the azimuth orientation of the antenna to be modified.