Call sign

Space Station W3 used the call sign LX88J. (TV: The Wheel in Space ^[+]Loading...["The Wheel in Space (TV story)"])

The Intrusion Counter-Measures Group used call signs such as Red Four, used by Rachel Jensen; Red Six, used by a van driven by Mike Smith; Red Nine, Blue One, Blue Four and Blue Six. (TV: Remembrance of the Daleks ^[+]Loading...["Remembrance of the Daleks (TV story)"])

The Brigadier and other members of UNIT often used variations of Greyhound and Trap as call signs. (TV: The Mind of Evil ^[+]Loading...["The Mind of Evil (TV story)"], The Claws of Axos ^[+]Loading...["The Claws of Axos (TV story)"], etc.)