Radio interference is a type of interference caused by the transmission of radio waves from one device to another. It is usually caused by electromagnetic radiation from other sources, such as power lines, electrical appliances, and other electronic devices. STATIC (6 letters) and Sttic (5 letters) are two common forms of radio interference. STATIC is a type of interference that is characterized by a hissing or crackling sound, while Sttic is a type of interference that is characterized by a low-frequency hum. Both types of interference can cause disruption in radio transmissions.