Oh Lordy - I flew the Hiller 12e, Bell47, Whirlwind 3/7/9 and never knew that there was something called a "correlator" in the system. I knew that it/they had an anticipator that probably was the same thing - but was it?
I suspect that correlator is from the land of BP bashing and therefore of little substance.
Am I right or am I older than I think I am..........?
Ready for incoming - glass of rose (insert accent as desired) in hand - sitting in glorious sunshine in idyllic garden in Somerset.