Remember that JACK was programmed locally for New York and featured a playlist unique to WCBS-FM. Smaller markets use the national feed, but larger markets program their own music for JACK. In fact here in 2024, there are many Variety Hits stations that could easily pass for modern day Classic Hits and vice versa.
Aww, I think that's what the Jack-FM executives would tell stations. "Yes, we'll tailor it to your market. Now, just sign here." Then they'd simply plug in the Jack-FM every other market got with a few minor adjustments.
After all, how much can they change it for each market? It's a very specific format. And I think financially it would be impractical to reinvent it for NYC vs. Chicago vs. Denver (all cities that once had Jack but no longer). Maybe there are a few Garth Brooks songs in rotation in Dallas that you don't get in Baltimore. But how much can you tinker with it?
I live in the NYC market. I heard the NY version of Jack-FM. I couldn't tell the difference from all the other Jack stations. It was about 40% Modern Rock, 50% Classic Rock and 10% out of format songs including some almost-novelty hits like Can't Touch This, Girls Just Wanna Have Fun, Funky Cold Medina and She Blinded Me with Science.
Even today, try listening to Jack in various big markets. The Audacy app gives you Los Angeles, Dallas and Minneapolis. The iHeart app gives you Baltimore, Nashville and Seattle. They both give you the national Jack-FM heard in San Antonio and smaller markets. They really all sound the same.
I'm not complaining. I LIKE Jack-FM. I enjoy the music mix and the snarky Jack comments. But if you believe the sales pitch that they'll tailor Jack to your market, I have a used Studebaker to sell you. Only 20,000 miles. A little old lady simply drove it to church on Sunday!