A radiotelephone is any device which is used for you voice transmissions over radio waves. A multitude of devices fall under this definition. Many radiotelephones can relay messages through traditional land phone lines, and some are utilized only for mobile-to-mobile wireless transmissions. Several modern devices such as mobile devices are technically considered radiotelephones.
The most basic kind of radiotelephone is a straightforward transceiver that sends voice signals to a different station. The radios utilized by police cars are instances of standard radiotelephones. Ships, aircraft, and military units also commonly use radiotelephones for communication, since they often operate in situations where other voice transmission methods are certainly not available.
The technical meaning of a radiotelephone extends beyond simple point-to-point transceivers, plus includes radios that could interface with all the land telephone system. On this arrangement, basics receiver is connected to an ordinary phone. Voice signals sent from the mobile radio are acquired by the base station and forwarded over the phone lines. An individual operator is known to connect calls, or an automated tone-controlled system may be used. These kinds of radiotelephone installations were not unheard of before mobile phones became prominent.
Cell phones are in fact radiotelephones, although they are hardly ever called by this name today. Each “cell” or part of phone coverage posesses a radio station that is from the traditional phone grid. A handheld cell phone unit includes a short range radio transceiver. Early cell phone radiotelephone conversations were sent using a standard radio signal and is found by any receiver around the proper frequency. Modern calls are encrypted to prevent eavesdropping.
Despite the rise in popularity of cell phones, lots of people still use easier radiotelephones for professional and hobby communication. Businesses often employ mobile voice radios to talk in areas which might be outside of cell coverage, for example remote construction sites. Amateur radio experimenters use handheld and vehicle radiotelephones to get in touch with enthusiasts, and also have entry to private radio repeaters which might be exactly like the mainstream cell phone networks.
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