Here at the Towers we'd like to draw your attention to an interesting proof of concept trial going on at EGCC until the 16th October.
There's a bit of kit in the cockpit that's barely used in anger these days - the marker beacon receiver. The idea is to transmit a pretty tightly focussed voice message adjacent to stop bars at holding points.
That's interesting. The performance computer I mentioned in another thread recently was to work in exactly this way in its original form. It was to have announced the feet to go during take-off and landing.
The inventor wanted to sell the receivers, but I pointed out that there was a little used receiver in almost every aircraft in the world.
That was in the mid seventies.
http://www.pprune.org/forums/showthr...er#post2151778