Originally Posted by
ex82watcher
Sorry,a bit late,but it's the first time I've looked at this thread.There was a trial of alpha-numerics in the very late 80s,or early 90s.I didn't arrive at LATCC until 1988,and I can remember an occasion when on the Pole Hill sector,I had a Dan Air,and a Midland on the frequency at the same time,both of which had the same Alpha-numeric suffix to their call sign,and all three of us were becoming confused at times.They were something like BD498AB,and DA498AB.Thankfully the trial didn't last long !
The first trial of alpha numerics was done in conjunction with Dan-Air in 1982. I can, if necessary, explain how the system worked