McO , to reaffirm your memory , 2 'fotos of BEA , ex-BEA Viscs. Early with Decca Nav. Later , either minaturised or taken out leaving panel . Incidently 'foto source , says that is Capt Stan Key with Yuri [ Trident Staines ]
The Decca Navigator panel is on top of the normal coaming .
DRUK, Thanks for that , a Decca made Doppler as to a Decca made , Decca Navigator ! It also may explain the rumour of a misorder for 737-200s of an helicopter one valid only to 300 kts ..
rgds condor