radio telephone system
121Global Maritime Distress Safety System — The Global Maritime Distress and Safety System (GMDSS) is an internationally agreed upon set of safety procedures, types of equipment, and communication protocols used to increase safety and make it easier to rescue distressed ships, boats and… …
122Joint Tactical Radio System — The Joint Tactical Radio System (JTRS, often pronounced jitters ) is planned to be the next generation voice and data radio used by the U.S. military in field operations after 2010. Launched with a Mission Needs Statement in 1997 and a subsequent …
123Community radio — is a type of radio service, that offers a third model of radio broadcasting beyond commercial broadcasting and public broadcasting. Community stations can serve geographic communities and communities of interest. They broadcast content that is… …
124Professional Mobile Radio — (also known as Private Mobile Radio (PMR) in the UK and Land Mobile Radio (LMR) in North America) are field radio communications systems which use portable, mobile, base station, and dispatch console radios and are sometimes based on such… …
125Citizens' band radio — Typical 1980s CB base station, used with outdoor antenna. This radio may also be used in an automobile, since it is powered by 13.8V DC. Shown with Astatic Power D 104 desk mic …
126Bell System — ] The Bell System was commonly referred to by the nickname Ma Bell. History Formation under Bell patentReceiving a U.S. patent for the invention of the telephone on March 7, 1876, Alexander Graham Bell formed the Bell Telephone Company in 1877… …
127Scanner (radio) — PSR 800 GRE Digital trunking scanner …
128Rural Radio Network — The Rural Radio Network (RRN) was an interconnected group of six commercial FM radio stations spread across upstate New York and operated from Ithaca, NY the first all radio, no wireline network in the world. [ Pattern for FM Profit: Part 6… …
