It was the Decca system that employed "slaves" - Red, Green and Purple. Decca Navigator and then Racal-Decca had a nice little business going until GPS came along and spoiled their business case in t
If you look at the history, most entries are by Maury Markowitz Stewart/G3YSX On 13/02/2016 16:00, Alan Melia wrote: Hi Dave, my guess is the majority of that article was written by Walter Blanchard