the early model 47's had a cable throttle as do the tomcats today.
it is a better system than the later throttle cam box but alas they changed it.
47's throttles are pretty much all different depending on the degree of wear in the cam box, you get used to it after a while.
for the best control you should always remember to take up the slack in the mechanical linkage after you have reduced power, that way you will have less chance of the rotor rpm decaying when you raise the collective, especially on approach.
think ahead.