Thanks Andy.
It would be great if they came up with a 1090ES system with built in GPS reciever, all in one box would be great.
Yes, all of the UAT systems I have seen require their own control head. You can't just program it and forget it.
Not much room on a Pawnee panel.

I had your old LS-4 "9B" out for a spring cleanup and on display at the VGT Open House yesterday. It's ready for the summer season.
BillT