constantsignal

noun
UK /ˈkɒnstənt ˈsɪɡnəl/
US /ˈkɑːnstənt ˈsɪɡnəl/

A signal that stays the same and never stops or changes.

The radio picked up a constant signal from the lighthouse all night long.


OTHER MEANINGS

2. An unchanging electrical or electronic output used as a reference.

The engineer calibrated the meter against a constant signal.

3. A repeated message or cue that does not vary.

The teacher gave a constant signal for the class to quiet down.

4. A steady indication of something that remains reliable over time.

Her smile was a constant signal that everything was fine.