Not sure exactly when KRON started carrying 'Jeopardy!' It wasn't on from day one, but certainly by the end of 1984. KRON aired it in various afternoon time slots (3:30/4/4:30) while 'WOF' aired at 7:30(KRON, like KGO and KPIX, ran network news at 7).
'J!' and 'WOF' made the switch to KGO on February 10, 1992, as KRON and KPIX adopted the experimental 'Early Prime Time' schedule(prime time shifted to 7-10). KGO moved ABC news to 5:30, and 'Entertainment Tonight' moved back to KRON for a while(at 6:30 or 10:30, neither slot successful).