Pittsburgh, in a nutshell:
KDKA-1020, CBS-owned news-talk with 3-6 p.m. news block, runs local on the hour and half hour weekdays, network overnight on the hour and updates on the half hour, weekends it only has CBS though it has local talk shows and Accuweather. Also runs AP and CNN material.
If you're going to throw the network switch, CBS is still a good choice.
KQV-1410, APR-affiliated all-news all-day, various overnight, runs network on the hour, also updates around the half hour, also WSJ, Radio Pennsylvania and overnight Bloomberg.
AP fills KQV's bill, but it doesn't sound quite as professional as when it was the CBS affiliate.
WPGB-104.7, Fox-affiliated, local (from Cleveland Clear Channel newsroom with WTAE-TV news audio) on hour, half hour 6 a.m.-6:05 p.m., also WSJ's morning news hour, Dow Jones Money reports.
Fox fills the bill on a station that gets ratings with national talk (and I include Quinn and Rose, Pittsburgh-based but clearly national-topic-prone).
WDUQ-90.5, NPR-affiliated, local news during long-form network news blocks also local news blog online.
NPR isn't exactly the anti-Fox, or vice versa, but it's good to hear the NPR perspective once in a while alongside the Fox "we report, you decide" philosophy.
WJAS-1320 and WMNY-1360, Renda-owned, CNN on the hour, WJAS also has local news mornings in drivetime, WMNY also runs simulcast of WTAE morning news from 5-7 and local bartered business news and talk block in afternoon drive.
Fits two stations that aren't exactly old-fashioned full-service.
WAVL-910 Apollo 5,000-watt day (68 night), only ABC carrier in market.
Essentially, it's a one-man operation, owned by an Assembly of God driven out of contemporary Christian music by a local K-Love, calling itself "Liberty 910 the People's Talk," with national talk and automated weather.
WMBS-590 Uniontown 1,000-watt round-the-clock, CBS hourly (also local and AP-wire-copy news at various times).
If "Remember WENN" was being done today by American Movie Classics, the producer could model it after WMBS.