OK, you understood ‘cops’ that isn’t a word we usually use here in the UK. We Brits traditionally often refer, graciously, to our ‘boys in blue’ as ‘bobbies’ or ‘the old bill’.
In any case, considering the fact that, I am going to assume which you’re asking regarding the United states law enforcement and their longstanding enterprise with the Motorola Business. OK, here goes…
Reported by Motorola’s official web site,
“Law enforcement communications and police communications are essential assets to the safety and security initiatives in any community. Advancing police communications allow law enforcement to be more mobile and more rapidly respond to issues. Motorola offers an extensive product line to enhance law enforcement communications with less paperwork and faster, highly reliable performance”.
Motorola built vehicle radios as early as the 1920’s and United states police and the fire brigade had a number of of those, but it really was not until 1930 that the initial law enforcement car two way radio was designed and constructed by Motorola. According to the official website,
“Sales of Motorola police radios began in November 1930. Among the first customers (all in the U.S. state of Illinois) were the Village of River Forest; Village of Bellwood Police Department; City of Evanston Police; Illinois State Highway Police; and Cook County Police in the Chicago area. As more police departments used radios, challenges emerged. Rough roads, engine noises, interference, high power consumption, and frequency instability led Paul Galvin to recognize that police departments needed a radio specifically engineered for patrol cars”.
In 1936, the Motorola Law enforcement Cruiser Two way radio was built. It had been a success and Motorola are a trusted brand by United states Police since. In 1939, engineer Don Mitchell fashioned the Cell T6920 AM Transmitter. It was another success, becoming a rational choice for the police as,
“This complete Motorola two-way radio system was priced about one-fourth as much as the competition’s, and the transmitters could be installed in cars that already had receivers in the same frequency band. In 1940 the Police Department in Bowling Green, Kentucky, became the first customer for a complete Motorola AM two-way radio system. The radios were so well-designed that Galvin Manufacturing produced the same models for several years, until FM technology replaced them in the 1940s”.
Evidently, the US law enforcement have a very extensive and successful relationship with the Motorola Company. This evidently applies to walkie-talkies as well. It makes good sense to use a trusted, easy to implement brand for successive generations of officers, who often have to respond swiftly and impulsively to various problems.
The first law enforcement to utilize 2 way radios were actually Australian, but subsequently the Second World War, mobile radios became standard issue in nearly all 1st world states.