Crosswordiee.com

% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Signal to scramble:

REDALERTS: Signals to scramble
REDALERT: Signal to scramble
ALERT: Signal for a scramble.
GARBLE: Scramble, as a signal
AIRALERT: Signal that starts a scramble