100% accurate, thanks for the clear write up. Please stick it up on Wikipedia if you can :)
And I’ll add a bit about Clear Channel AM (unrelated to the billboard advertising company) - there were originally a handful of said stations that broadcast on a few AM band frequencies that are reserved just for them, so their broadcast range is impressive.
One for example is WOR radio in Chicago.
Fun factoid - you can see on very old AM radios those clear channel frequencies marked by a diamond or similar symbol on the dial.