Roy Smith wrote:
: Questions like this are best answered by reading the AIM, Chapter 1
: (Navigation Aids). It's on line at http://www.faa.gov/ATpubs/AIM/.

: A quick read of Section 1-1-7 says range is up to 199 nm, at altitudes
: high enough to have line-of-sight to the ground station. There's
: nothing in there that leads me to believe that a DME co-located with
: an ILS is any different from one co-located with a VOR.

Since DME requires bi-directional communication, it would seem that DME
station receiver sensitivity, atmospheric conditions, and aircraft DME
transmitter/antenna power would be the limiting factor beyond a certain point.

-Cory

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* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
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