A communications scanner, also referred to as a comm scanner or communication signal scanner, represented a type of communications device designed to observe various radio frequencies, including those used for emergency broadcasts. Additionally, it possessed the capability to identify illicit comlink communications. Law enforcement agencies employed these scanners to oversee events like deadly collisions. The detection of signals from PTP links posed a challenge for comm scanners because of the low signal strength utilized by these links and the obsolete nature of the scanner technology in contemporary contexts.