Kai,

So...what would you say instead of "Request QDM" in the U.S.?

You would say to yourself: "Gotta switch on that GPS". ;-)

The most important Q-codes still in use here in Germany are probably QNH,
QFE, QDM, QDR.

Hmm. QNH is used everyday, of course. I haven't heard QFE ever except in
the UK. QDM and QDR are used in written exams, but not really in practice,
in my experience.

--
Thomas Borchert (EDDH)