A majority of callers to SUNDIAL has no objection to Maryland Public Television broadcasting reruns of commercial network programs. MPT plans to air NBC's old ''St. Elsewhere'' series nightly at 11 p.m. beginning June 1.
Of 292 callers, 156, or 53 percent, said MPT should show the reruns. And 74 percent felt the station should carry programs other than news and public affairs at 11 p.m., the traditional time for late news on the commercial networks.
"It's Your Call" represents a sampling of opinions from certain segments of the community, but it is not balanced demographically as would be done in a scientific public opinion poll.