  It's known that if $d^2$ vectors from $d$-dimensional Hilbert space $H$ form
a SIC-POVM (SIC for short) then tensor square of those vectors form an
equiangular tight frame on the symmetric subspace of $H\otimes H$. We prove
that for any SIC of WH-type (Weyl-Heisenberg group covariant) this squared
frame can be obtained as a projection of WH-type basis of $H\otimes H$ onto the
symmetric subspace. We give a full description of the set of all WH-type bases,
so this set could be used as a search space for SIC solutions. Also we show
that a particular element of this set is close to a SIC solution in some
structural sense. Finally we give a geometric construction of a SIC-related
symmetric tight fusion frames that were discovered in odd dimensions.
