David67 said:
It might be really interesting to see what the Soviets watched on TV in those days.
Unfortunately, I can't help you with schedules, but I would wholeheartedly recommend the book
The Universal Eye by Timothy Green, published in the early 1970s. It's an overview of the world's television at that time and includes an entire chapter on the Soviet Union. The book is widely available used on the Internet.
Here's a quote from that very interesting chapter:
"The choice in Moscow, for instance, at eight o'clock one Tuesday in July 1971 was -- U.S.S.R. soccer championships on Channel 1, a profile of worker in a vacuum cleaner factory on Channel 2, a German lesson on Channel 3, and a new film,
Bracelet 2, on Channel 4."
According to Green, the first channel was the flagship channel, broadcast across the Soviet Union, but not simultaneously because of the country's many time zones. The second channel was the local Moscow channel, "concentrating primarily on the capital scene..., covering events of the day, local sports and including plenty of live coverage of concerts and ballet." The third channel was "purely educational," while the fourth channel was mostly highbow/cultural.
At the time, the Soviet Union was the only country to use satellites as a primary method of domestic television distribution.