Mike wrote:
I am preparing to take my written Commercial Glider exam and have been
using various test guides and on line practice tests. I am curious as
to why there are questions pertaining to radio navigation included in
the question pool. Has anyone ever used a VOR or ADF in a glider?

It's certainly possible, and some sailplanes have had VOR installed.

Modern handheld radios have the VOR feature, so it's actually more
likely for someone to use this today. It's a good idea for glider
pilots to be aware of VORs, as they can be possible points of
congestion as airplanes will overfly them as they go XC. Though, with
GPS, there's probably a lot more "direct" flying now.

Also, if talking to ATC or FSS, providing a position relative to a VOR
is the most expeditious means of telling tehm where you are...

-Tom