Harry Carey.
When I was a kid, long before Colorado had MLB, I would lay on the floor listening to the radio as Harry broadcast Cardinal games on KMOX.
I could also pick up LA games, and sometimes Texas and Minnesota.
I've been a Yankees fan since about 1948.  My father before me.  And, all three of our kids like the Pinstrips.  Was in Yankee Stadium last summer to watch a game in the "old" ballpark.  Would like to go back to NYC this summer and be in the stands for a game in the new Yankee Stadium, but funds are pretty thin right now.
While in NYC last summer we also saw a Mets game in Shea Stadium.  That ballpark also is gone.
The oldest ballpark I've watched MLB in was Municipal Stadium in Kansas City.  Yankees vs. KC in 1961 and 1962. 
 
  
  
 