Yeah, I've got a SIGNAL.
Breaking Bad Season 2, Episode 9
When they see us coming,
that fire becomes a SIGNAL.
Game of Thrones Season 2, Episode 5
...the dark matter SIGNAL found
in sodium-iodide crystals by the Italians.
The Big Bang Theory Season 2, Episode 15
The point of a secret knock
is to establish a nonverbal SIGNAL...
The Big Bang Theory Season 1, Episode 16
All I need to do is give a SIGNAL,
and they'll rescue me.
Game of Thrones Season 5, Episode 7