Tribune Broadcasting’s full-service WGN-AM held onto the top spot in Arbitron’s fall ratings survey with a 9.3 share of listeners over age 12 – gaining more than one point since the summer book and significantly widening its lead over Gannett’s second-place WGCI-FM, which slipped from 7.9 to 7.2.

WGN also overtook WGCI-FM in midday and afternoon drive, usually strongholds for that urban contemporary station. And WGN morning man Bob Collins took first place in his slot for the 18th survey in a row, moving up half a share to 13, nearly five points ahead of rival Jonathon Brandmeier on WLUP-AM/FM.

Big winners also included: CBS-owned contemporary-hit outlet WBBM-FM, moving from sixth place with a 4 share in fall ’89 to third place with a 6.2 among 12-plus listeners; Cook Inlet’s country WUSN-FM, upped from 12th to eighth place overall, jumping more than one share point from its summer score to 4; and Viacom’s adult-contemporary WLIT-FM, climbing to 10th place in the market and first place among its AC competitors.

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