2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147843We comment a model based on the $SU(3)_c \otimes SU(3)_L \otimes U(1)_X$ gauge symmetry recently proposed by Frampton. We stressed that the analysis of flavor changing neutral currents impose strong constraints on th emasses of the new gauge bosons of the model.Latex, 3 pages (a misprint in Eq.(4) has been corrected)High Energy Physics - Phenomenologytext