Thanks for the reply Blacksheep
I wasn't sure if here was the right forum to put this question in - may I ask if anyone here knows of a forum where the avionics techies hang-out? I'm looking into the prospect of a part-time degree in electronics; there are plenty of good forums for general RF/Digital stuff, but a link to a specialist avionics group would be useful for getting in touch with current issues as well as general theory.
Cheers!