"Cable penetrates 70 percent of American audiences now"

This quote by Tom Brokaw is referring to the reach of cable television service in the United States. It recommends that cable television is now readily available to 70 percent of American audiences. This is a considerable increase from the past, when cable tv was only readily available to a small portion of the population. This boost in schedule is most likely due to the proliferation of cable television suppliers and the increasing affordability of cable television plans.

The quote likewise indicates that cable is now a major source of home entertainment and news for many Americans. This is likely due to the variety of programming available on cable television, from sports to motion pictures to news. Cable has ended up being an important part of lots of people's lives, offering them with a way to remain informed and captivated.

Overall, this quote by Tom Brokaw highlights the increasing reach of cable television service in the United States. It suggests that cable tv is now readily available to a large part of the population, and is a crucial source of home entertainment and news for lots of Americans.