Castleton VT
Grandpa's Knob
Broadcast Tower & Cell Site

All Photos and input courtesy of Geoff from Vermont. Many kudo's go out to Geoff and his excellent job collecting this information!
Photos and Information added 8/28/07.

Geoff writes: I visited Grandpa's Knob in Castleton VT recently. 
There is an access road which climbs to the top of the hill.  The Summit of Grandpa' Knob is 1945 feet above sea level and the tower is about 300 feet tall.  I am almost positive that Sprint and Verizon both operate on the tower.  I think Nextel is here also and Unicel would be the 4th carrier.  Upon close inspection of the tower, I believe it is possible that all 4 carriers are present. 
I found out that 101.5 The Fox is the FM station located here.

Click each photo to enlarge them.