radio control system
71Two-way radio — receiver which only receives content. Two way radios are available in mobile, stationary base and hand held portable configurations. Hand held radios are often called walkie talkies or handie talkies. A push to talk or Press To Transmit button is …
72warning system — ▪ military technology Introduction in military science, any method used to detect the situation or intention of an enemy so that warning can be given. Because military tactics from time immemorial have stressed the value of surprise… …
73Schafer automation system — The first Schafer Automation System, installed at KGEE(AM) in Bakersfield, California in 1956, was dubbed the blue wire job because all of the wiring in it was blue, its inventor, Paul Schafer said. The owner wanted to program his station all… …
74Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …
75Norwegian Public Safety Radio — Nødnett …
76Signalling block system — Signalling block systems enable the safe and efficient operation of railways, so as to avoid collisions between trains. Block systems are used to control trains between stations and yards, and not normally within them. Any block system is defined …
77Remote control — For other uses, see Remote control (disambiguation). A television remote control unit (RCU) A remote control is a component of an electronics device, most commonly a television set, used for operating the television device wireless …
78Positive train control — (PTC) is a system of monitoring and controlling train movements to provide increased safety.OverviewThe main concept in PTC is that the train receives information about its location and where it is allowed to safely travel. Equipment on board the …
79Software-defined radio — A Software Defined Radio (SDR) system is a radio communication system where components that have typically been implemented in hardware (i.e. mixers, filters, amplifiers, modulators/demodulators, detectors. etc.) are instead implemented using… …
80Joint Electronics Type Designation System — The Joint Electronics Type Designation System (JETDS), which was previously known as the Joint Army Navy Nomenclature System (AN System) and the Joint Communications Electronics Nomenclature System, is a method developed by the U.S. War… …
