I flew over it in 1980 on my way up the fjord from Goose in a Bandeirante at 12,000 feet. I saw more of it than most have described when it was obviously a very much a useful aid. Very rusty of course but still visible.
Clearly its navigational usefulness was well known, but reading about it in Fate is the Hunter gives it some added glamour when you actually see it.
Co-incidentally, I have just started reading the book for the 7th time - but I haven't got to that bit yet!