the (measured) strength of a radio signal as received by a radio or any other device receiving radio signals, such as a mobile phone.

plural of distress signal

An emergency signal sent by radio (or other means) from a ship or aircraft in distress or danger. / An indication of distress.

(historical) A kind of mechanical signal used on early American railroads, consisting of wooden balls, painted various colors, that were hoisted up and down a pole using a rope and pulley.

plural of ball signal

plural of virtue signaller

Alternative spelling of virtue signaller

plural of virtue signaler

an instance of sharing or disseminating another's information or material with one's own audience / (engineering) an increase in the capacity, strength, or range of a signal

to share or disseminate another's information or material with one's own audience