Mal Drop ...
I did my homework last night on LORAN ... and in doing so came across a rather interesting publication from DECCA called "Decca Navigator News" dated Sep 1966. Section 6 covers the decision to install LORAN C/A in the RAF Hercules K (amongst others) while Section 10 covers the wider topic of Hyperbolic Navigation.
Actually a very interesting read ... and thought you might be interested
http://www.deccanavigator.com/pdfs/D...7_Sep_1966.pdf
Don't worry ... no "wiggly amps" !
Best ...
Coff.