Used to work on that bit of kit at Spadeadam 83-86.
Was very effective but I seem to recall the Harrier boys used to give it a run for it's money. And the West German based Tornado's.
F4 Wild Weasels were a handful. While you were trying to track one of them his oppo would pop up behind a hill and let loose a simulated ARM.
When we had lock we used to radio the boys manning the SAM 'launcher' and they would pop one of those big fireworks off. Looked good from the ground. Wonder what the aircrew thought of them ?
Happy days.