  We show that an R-parity violating supersymmetric scenario which can account
for the atmospheric nu(mu) deficit has testable signals at the Fermilab
Tevatron with upgraded energy and luminosity. The explanation of neutrino
masses and maximal nu(mu)-nu(tau) oscillation in terms of bilinear R-violating
terms in the superpotential associates comparable numbers of muons and tau's
resulting from decays of the lightest neutralino. We show that this should lead
to like-sign dimuons and ditaus with substantial rates, in a form that
separates them from standard model backgrounds and other signals of
supersymmetry. One here also has the possibility of completely reconstructing
the lightest neutralino.
