electronic parameters alternatively a b d e f functions may be performed entirely by electronic means including solid state switching in place of the electromechanical switching herein described fig7 is a cross section of fig6 showing contactors relays 32 with relationship to control shaft 30 in fig8 is shown the tuning panel 34 in which for example more than 100 control shafts may be disposed to thereby provide a tuning panel capable of immediately focusing the dish upon the particular channel of the particular satellite which is of interest at that time to the user the dish of fig2 uses wire petal support braces 18 to hold the shape of each petal this function is performed by thin sheet material such as plastic in the embodiments shown in fig9 13 a thin walled parabolic section has inherent stability and rigidity in its structure which can be considered as an assembly of closed circles forming a warped surface when that paraboloid is out into a plurality of radial segments all of the circles are cut and the individual segments or petals have lost their stability the parabolic shape of satellite dishes of the prior art are stabilized where necessary by stabilizing elements connected to the convex surface the petals of the instant invention require greater stabilization than an intact paraboloid yet are not amenable to supports attached to the convex surface because they would prevent overlapping the shape retaining rods or walls herein illustrated provide that necessary stability by their shape and orientation they do not interfere substantially with.