overdrive effects such as the use of a fuzz box can be used to produce distorted sounds, such as for imitating robotic voices or to simulate distorted radiotelephone traffic (e.g., the radio chatter between starfighter pilots in the science fiction film Star Wars).
Prior to the Transatlantic cable and the Radiotelephone, it used to take very long for information to go from one place to another.
Suppressed-carrier ISB was employed in point-to-point (usually overseas) radiotelephony and radioteletype by shortwave (HF).
The radiotelephone signal from Radio Central was received by the British General Post Office's receiver facility in Cupar, Scotland.