.... aaah, but the point is that the radials are not necessarily magnetic track from a beacon. They assume a constant declination which is ordinarily a mean of the variation at the facility over a period of 5 years.
If one were to peruse the ENR section of the AIP, you would notice that each VOR has a declination and variation as part of it's description. For example from the UK AIP:
JERSEY VOR/DME 1.3°W (2015) 2.14°W
In other words, the Variation in 2015 is averaged at 1.3°W but the VOR is set-up with a declination of 2.14°W; there is a 0.8° difference between VOR radial and the magnetic track required to maintain that radial. Fortunately in my part of the world that difference is ordinarily negligable.
