1942 RAF training film - "Bullseye Interception"

One 1942 film called "Bullseye Interception"  that I'm currently accessioning, is about how fighter control coordinated interception of German bombers (AA, Searchlights and night fighters).

On the wall of the sector ops room, along with squadron status, weather etc was a list of R/T Codes - many are well known but a couple of new ones to me…

• Scramble - Take off and climb
• Saunter - Fly slowly as possible without losing height
• Liner - Fly at economical cruising speed
• Buster - Fly at normal full speed
• Gate - Fly at maximum permissible speed (5 mins only)
• Angels - Operate at height ____ ft
• Vector - Set course ____ degrees
• Steer - Set course for home ____ degrees
• Orbit - Circle and search
• Bogey - Unidentified aircraft
• Bandit - Enemy aircraft
• Tally Ho - Enemy sighted
• Pancake - Land and Refuel
• Popeye - In cloud
• Mattress - Below cloud
• Quilt - Above cloud