Originally Posted by
Herod
I would think it you were coming out of Stockholm, bound for UK, with a load of ball-bearings, the last thing you want is for the Germans to know you are airborne. Total radio-silence I expect.
Probably used VHF just for short range calls inbound, otherwise as you say, total radio silence. They would have changed the trip number suffix daily.
Other aircraft used were Lodestars and Dakotas; there is also mention of a black painted Liberator too.