It's been 2 months since COMCAST added Antenna-TV in my area. So far I have not seen any local commercials on it. All the spots are national spots you see on all the channels such Life Alert, Hov-a-round Scooter, End Animal Abuse, and the like. The only local spots I've seen on Antenna-TV are promos for shows on their sister stations such as CW prime-time on The CT WCCT-TV and Animation Domination on FOX.
*Note* For those on the outside looking in Tribune owns 2 stations in Hartford. WTIC-TV and WCCT-TV. WTIC-TV 61.1 is FOX. WTIC-TV 61.2 is Antenna TV. WCCT-TV 20.1 is CW and WCCT-TV 20.2 is This-TV. That's why they air promos for FOX and CW.
*Note* For those on the outside looking in Tribune owns 2 stations in Hartford. WTIC-TV and WCCT-TV. WTIC-TV 61.1 is FOX. WTIC-TV 61.2 is Antenna TV. WCCT-TV 20.1 is CW and WCCT-TV 20.2 is This-TV. That's why they air promos for FOX and CW.