  A yukawaon model which is compatible with an SU(5) GUT model is investigated.
In a previous SU(5) compatible yukawaon model with a U(3) family gauge
symmetry, we could not build a model with a lower energy scale of the family
gauge symmetry breaking scale $\Lambda_{fam}$ than $10^{13}$ GeV, so the family
gauge boson effects in the previous model were invisible. In the present model,
we consider two family symmetries U(3)$\times$O(3), and we assume that the
conventional quarks and leptons $(\bar{\bf 5}+{\bf 10}+{\bf 1})$ of SU(5) are
described as $(\bar{\bf 5}_i+{\bf 10}_\alpha+{\bf 1}_\alpha)$ ($ i=1,2,3$ and
$\alpha=1,2,3$ are indices of U(3) and O(3), respectively). As a result, we
build a model with $\Lambda_{O3} \sim 10^{16}$ GeV and $\Lambda_{U3} \sim
10^{3}$ GeV. The lightest U(3) family gauge boson $A_1^1$ will be observed with
a mass of the order of 1 TeV.
