There is a set of repeaters in Island Park, ID that uses the same input and output frequency's. Two different PL tones are required.
One has a PL of 100.0, the other 123.0.
One is for local use, the other is a part of the "Inner Mountain intertie" Not sure of the spelling, but the inner mountain intertie connects repeaters from Montana to Las Vegas together (maybe all the way to Phoenix, AZ, it was in the works some time ago).
It's about 100 miles from my QTH and I can access both with full quieting. It's a good repeater on a pretty tall mountain.
We have a local simplex GMRS repeater, just a commercial Motorola radio, duplexer and a set of cans with a vertical antenna. It's at almost 9000' and has a range in excess of 100 miles in many directions. It is on 467.550 with a PL code of 197.8 and works darn near as well as the amateur VHF/UHF repeaters in the same location.
What is also nice is that the building has a propane back up generator
John