Richard and Dave these are fascinating reminiscences. I'm familiar with the terminology but only vaguely familiar with the workings of Decca, Loran and the offshoots so to hear from those who contributed to the advances is enlightening. .

Re the original thread, June 6th. Allow me to put in a mention of the Auster pilots who'll be gathering at Falaise in Normandy between 5th and 7th June to mark the 80th anniversary of D-Day. Up to 20 Austers, some of them Normandy veterans, will be flying across the channel in the days ahead of the 6th and will be at Falaise aerodrome for a few days. Falaise aeroclub is hosting us and on the 6th there'll be much fraternising between us and the locals. Quite a few historic Normandy vehicles, jeeps etc, will be there also.

Wish us good weather and drop in if you're in the neighbourhood.