[throw0101a]

> […] like VORs and waypoints for systems exactly like this one, for cases when uniqueness is required.

AIUI, most VORs (and in the past, NDBs) are located at airports. And there is an airport at Deauville (DOL/LFRG):

* https://en.wikipedia.org/wiki/Deauville–Normandie_Airport

But the beacon is elsewhere, apparently in some random(?) field:

* https://www.google.com/maps/place/49°18'38.0%22N+0°18'45.0%2...

* https://opennav.com/navaid/FR/DVL/DEAUVILLE+SAINT+GATIEN

[rounce]

There are plenty of navaids that aren’t associated with an airport, there’s probably around a dozen like this just south-east England.