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Thread: Preventing Mid-Air Collisions
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Old 20th December 2005 | 09:59
  #10 (permalink)  
jabberwok
 
Joined: May 2001
Posts: 661
Likes: 2
From: up North
What happened to the cheap proximity warning system that GASIL were plugging a couple of years back? It utilised transponder signals if I recall..
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