Listened to many a QGH at RAF Newton when my dad took me there as a boy circa 1963 - in those days the DF equipment was manually operated by a man in a caravan at the other side of the aerodrome so when the a/c transmitted he would turn the aerial around to get a nul and then shout the bearing down the intercom to the controller!
The joke I heard about QGHs was the guy in the Meteor that got bored and climbed to FL 480 for recovery - the controller instructed the aicraft to climb to FL 500 (knowing full well the a/c would not go any higher!) and report level for homing!! LOL