Search results
Results from the WOW.Com Content Network
The main use of an antenna is to send radio signals. Aerial feeder - system of feeding HF-Energy (power) in the antenna; Transmission lines - Transmission lines are used to transfer the radio signals to other locations. Connectors Interface panel remote control – This is used to connect various different types of the equipment used in a radio ...
Radio began to be used commercially for radiotelegraphic communication around 1900. [ 2 ] The first 20 years of commercial radio were dominated by radiotelegraph stations, transmitting over long distances by using very long wavelengths in the very low frequency band – such long waves that they are nearly unused at present.
Commercial FM broadcasting transmitter at radio station WDET-FM, Wayne State University, Detroit, US.It broadcasts at 101.9 MHz with a radiated power of 48 kW.. In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna with the purpose of signal ...
Radio broadcasting means transmission of audio (sound) to radio receivers belonging to a public audience. Analog audio is the earliest form of radio broadcast. AM broadcasting began around 1920. FM broadcasting was introduced in the late 1930s with improved fidelity. A broadcast radio receiver is called a radio. Most radios can receive both AM ...
Like all industrial sites, the buildings, the antenna masts, the generators, and the transmitting equipment of the stations should be grounded for personal safety against electrical shocks. On the masts and roofs, lightning rods should be used. For transmitter stations working on frequencies below 30 MHz a good grounding is required for good ...
A broadcast transmitter is an electronic device which radiates radio waves modulated with information content intended to be received by the general public. Examples are a radio broadcasting transmitter which transmits audio (sound) to broadcast radio receivers (radios) owned by the public, or a television transmitter, which transmits moving images to television receivers (televisions).
Radio receivers are essential components of all systems that use radio. The information produced by the receiver may be in the form of sound, video , or digital data. [1] A radio receiver may be a separate piece of electronic equipment, or an electronic circuit within another device.
Radio-frequency (RF) engineering is a subset of electrical engineering involving the application of transmission line, waveguide, antenna, radar, and electromagnetic field principles to the design and application of devices that produce or use signals within the radio band, the frequency range of about 20 kHz up to 300 GHz. [1] [2] [3]