The first handheld radio came into being in 1940 and was built by the Galvin Mfg. Questions could be asked and answered extra information could be provided as it was received. It used a very high frequency (VHF) system and increased patrol efficiency through streamlining clarity of communications. The radios enabled back-and-forth communications between cars and the headquarters or district station. Just five years after that, in 1933, the Bayonne, New Jersey police department installed two-way radio systems in their patrol vehicles. Those earliest radios didn’t have a dedicated frequency or band and had to be registered with the Federal Radio Commission. In Detroit, a one-way radio system was developed that allowed someone in police headquarters to dispatch to all patrol vehicles an informational call. It was thirty years later (1928) that the first portable radio system was developed and put into use. Some of the messages included: police wagon required, accident, murder, disorderly (drunkard) and others. Some of the earliest call boxes even included a rotary dial feature that signaled, via telegraph, a code with a specific message. installed call box systems: Washington D.C., Boston, and Detroit among them. During the 1880s, several large cities in the U.S. The first police call box was put into service in Chicago, Illinois in 1880. The first police telephone was installed in Albany, New York in 1877. The use of such a whistle grew across Europe and then around the world, and many agencies still use the whistle today as part of directing traffic or other duties where getting someone’s attention is necessary. In 1884, a gentleman named Joseph Hudson showed his brass “pea whistle” design to Scotland Yard and they adopted it for use. Jump to the 1880s-police officers were trying to communicate through the use of rattles. Some societies used these crude devices to alert villages if enemy troops were approaching or for calling for help. By scraping off both ends-usually done by rubbing them on rocks and then digging out the meat inside-an object that could be held between the lips and blown through to make a whistling sound was created. The earliest whistles could be shaped out of hollowed out items like acorns or plum pits. Whistles were probably the first widely used signaling devices and even the earliest whistles weren’t metal or (obviously) plastic. There was a time before any signaling devices, where all communications were done either by voice (shouting if necessary) or by hitting something to make a series of sounds. Can you imagine being a police officer on the street without a radio? How about not even a phone. With all the electronic communications tools we have, which include not only the hardware pieces but also the software support, it’s not often we think about the time before we had such tools. It’s so easy in today’s technology filled world to read the word “communications” and think of a great number of electrical devices: radios, cell phones, home phones, computer-based and Voice over Internet Protocol (VoIP) communication applications.
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