| There were a number of communications - internal, reception and transmission
Internal was of course either through direct speech, the intercom or by morse light.
Reception - the vast majority of radio signals were actually the ones sent out by bases, especially as individual aircraft were generally instructed to remain on radio-silence.
Transmission - as far as I know the majority of the signals sent out by aircraft was morse code, especially on the outward journey, and when over enemy territory.
__________________ _________________  Beaufighter TF Mark Xs (NV427 'EO-L' nearest) of No. 404 Squadron RCAF based at Dallachy, Morayshire, breaking formation during a flight along the Scottish coast. February 1945. |