If your transmitter sends signals outside the band where it is transmitting, what is this called?

Any signal emitted by a transmitter that falls outside its intended frequency band or assigned channel is officially referred to as a spurious emission. These unwanted emissions include harmonics (multiples of the operating frequency), parasitic oscillations, and intermodulation products. Because they waste power and can cause harmful interference to other amateur operators or commercial radio services, strict regulations dictate how much spurious energy a transmitter is allowed to produce. Distractors like 'chirping' refer to a slight frequency shift during a CW (Morse code) transmission, and 'side tones' are just the audio feedback heard by the operator when keying. 'Off-frequency emissions' is a distractor made up to sound intuitively correct.