wrote in message
oups.com...
On Aug 6, 9:34 am, "Danny Deger" wrote:
snip

F-4. Is this some old event? That certainly changes the discussion.
At least mode-s is out of the question.


It happened in about 1983. You can read up on the details in my book you
can download for free.

Danny Deger
www.dannydeger.net