Six Chicago-area TV stations, including Fox-owned WPWR-Ch. 50, NBC’s Telemundo outlet WSNS-Ch. 44 and PBS affiliate WYCC-Ch. 20, will be changing channels after selling their over-the-air broadcast frequencies to wireless carriers.

The combined Chicago TV frequencies sold for about $758 million in a Federal Communications Commission spectrum auction, which repurposed a chunk of the broadcast airwaves for wireless mobile use.