Hi JCR
Hopefully David will remember me calling him 'one take' because he very kindly presented a video on the Philips Decca based 'ap navigator' for me at our house, Barford Court in Surrey in the days before GPS.
Initially, I tried to present it myself but I couldn't get my foot out of my mouth - even less so when I was flying at the same time.
He was as polished at presenting as he was at flying - did the whole video in one morning as if he'd done TV work his entire life.
I'm very sorry to hear he's not well. Please pass him my very best wishes.
Regards