Combination of a Dickinson Press listing and memory, with a correction for WGN being on channel 8, as I remember watching Bozo's Circus at 11am (Mountain time) before going to afternoon Kindergarten. While the newspaper listing said KOTA, it had to have switched to WGN by 1979 for me to have that memory.
3 - KTHI Fargo, ND (ABC)/KXJB Fargo, ND (CBS)
4 - MSG
5 - KFYR Bismarck, ND (NBC/ABC)
6 - HBO
8- WGN Chicago (Ind)
9 - Weather with KDIX-AM playing underneath
10- KDIX Dickinson, ND (CBS/ABC)
11 - WTBS Atlanta (Ind)
12 - CBN
13 - KBME Bismarck, ND (PBS)
Note on channel 3, When KDIX used ABC programming, channel 3 was switched to KXJB so viewers could still see CBS programming.
3 - KTHI Fargo, ND (ABC)/KXJB Fargo, ND (CBS)
4 - MSG
5 - KFYR Bismarck, ND (NBC/ABC)
6 - HBO
8- WGN Chicago (Ind)
9 - Weather with KDIX-AM playing underneath
10- KDIX Dickinson, ND (CBS/ABC)
11 - WTBS Atlanta (Ind)
12 - CBN
13 - KBME Bismarck, ND (PBS)
Note on channel 3, When KDIX used ABC programming, channel 3 was switched to KXJB so viewers could still see CBS programming.