Radio receiver

receiverreceiversRadiosradioradio receiversreceivingReceiver (radio)Radio setsreceptionstereo receiver
In radio communications, a radio receiver, also known as a receiver, wireless or simply radio is an electronic device that receives radio waves and converts the information carried by them to a usable form.wikipedia
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Antenna (radio)

antennaantennasradio antenna
It is used with an antenna.
In radio engineering, an antenna is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver.

Radio wave

radio wavesradioradio signal
In radio communications, a radio receiver, also known as a receiver, wireless or simply radio is an electronic device that receives radio waves and converts the information carried by them to a usable form.
Radio waves are generated artificially by transmitters and received by radio receivers, using antennas.

Loudspeaker

loudspeakersspeakerspeakers
The sound is reproduced either by a loudspeaker in the radio or an earphone which plugs into a jack on the radio.
Smaller loudspeakers are found in devices such as radios, televisions, portable audio players, computers, and electronic musical instruments.

AM stereo

C-Quam AM StereostereoA.M. Stereo
While AM stereo transmitters and receivers exist, they have not achieved the popularity of FM stereo.
AM stereo is a term given to a series of mutually incompatible techniques for radio broadcasting stereo audio in the AM band in a manner that is compatible with standard AM receivers.

Radio noise

staticnoiseNoise (radio)
Its advantages are that DAB has the potential to provide higher quality sound than FM (although many stations do not choose to transmit at such high quality), has greater immunity to radio noise and interference, makes better use of scarce radio spectrum bandwidth, and provides advanced user features such as electronic program guide, sports commentaries, and image slideshows.
In radio reception, radio noise is unwanted random electrical signals, fluctuating voltages, always present in a radio receiver in addition to the desired radio signal.

Transistor radio

transistor radiosportable radioKofferradio
The invention of the transistor in 1947 revolutionized radio technology, making truly portable receivers possible, beginning with transistor radios in the late 1950s.
A transistor radio is a small portable radio receiver that uses transistor-based circuitry.

Shortwave radio receiver

shortwave receiverworld band receivershort-wave receiver
A shortwave radio receiver is a radio receiver that can receive one or more shortwave bands, between 1.6 and 30 MHz.

Alarm clock

clock radioalarmalarm clocks
Many alarm clocks have radio receivers that can be set to start playing at specified times, and are known as clock radios.

Radio spectrum

bandradio bandspectrum
Its advantages are that DAB has the potential to provide higher quality sound than FM (although many stations do not choose to transmit at such high quality), has greater immunity to radio noise and interference, makes better use of scarce radio spectrum bandwidth, and provides advanced user features such as electronic program guide, sports commentaries, and image slideshows. AM broadcasting is allowed in the AM broadcast bands which are between 148 and 283 kHz in the longwave range, and between 526 and 1706 kHz in the medium frequency (MF) range of the radio spectrum.
For each of these bands the ITU has a bandplan which dictates how it is to be used and shared, to avoid interference and to set protocol for the compatibility of transmitters and receivers.

Transceiver

transceiversradio transceivertransceiving
A transceiver is a transmitter and receiver combined in one unit.
A transceiver is a device comprising both a transmitter and a receiver that are combined and share common circuitry or a single housing.

Table radio

A table radio is a small, self-contained radio receiver used as an entertainment device.

FM broadcast band

FMFM bandFM radio
FM broadcasting is permitted in the FM broadcast bands between about 65 and 108 MHz in the very high frequency (VHF) range.

Two-way radio

two way radioRadio Operatortwo-way radios
The receiver market was divided into the above broadcast receivers and communications receivers, which were used for two-way radio communications such as shortwave radio.
A two-way radio is a radio that can both transmit and receive a signal (a transceiver), unlike a broadcast receiver which only receives content.

Radio

radio communicationradio communicationswireless
In radio communications, a radio receiver, also known as a receiver, wireless or simply radio is an electronic device that receives radio waves and converts the information carried by them to a usable form.
They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by a radio receiver connected to another antenna.

Radio broadcasting

radio stationradio stationsstation
The most familiar type of radio receiver for most people is a broadcast radio receiver, which reproduces sound transmitted by radio broadcasting stations, historically the first mass-market radio application.
Broadcasting service (short: Broadcasting (BS) | also: broadcasting radiocommunication service) is – according to Article 1.38 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as ''«A radiocommunication service in which the transmission are intended for direct reception by the general public.

Radio scanner

scannerpolice scannerscanners
A scanner (also referred to a police scanner, police scanner radio or radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases.

Communications receiver

receiverreceiversshortwave communications
The receiver market was divided into the above broadcast receivers and communications receivers, which were used for two-way radio communications such as shortwave radio. The heterodyne oscillator is the ancestor of the beat frequency oscillator (BFO) which is used to receive radiotelegraphy in communications receivers today.
A communications receiver is a type of radio receiver used as a component of a radio communication link.

Vehicle audio

car audiocar radiocar stereo
Around 1920, vacuum tube technology had matured to the point where the availability of radio receivers made radio broadcasting viable.

Intermediate frequency

IFintermediate frequenciesDual-conversion
In the superheterodyne, the radio frequency signal from the antenna is shifted down to a lower "intermediate frequency" (IF), before it is processed.
Intermediate frequencies are used in superheterodyne radio receivers, in which an incoming signal is shifted to an IF for amplification before final detection is done.

Communications satellite

satellite communicationssatellitecommunication satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth.

Radio telescope

radio telescopesradiotelescoperadio-telescope
A radio telescope is a specialized antenna and radio receiver used to receive radio waves from astronomical radio sources in the sky.

Tuner (radio)

tunerTV tunertuners
A tuner can also refer to a radio receiver or standalone audio component that are part of an audio system, to be connected to a separate amplifier.

Line-of-sight propagation

line of sightline-of-sightradio horizon
Like FM, DAB signals travel by line of sight so reception distances are limited by the visual horizon to about 30–40 miles (48–64 km).
Thus, any obstruction between the transmitting antenna (transmitter) and the receiving antenna (receiver) will block the signal, just like the light that the eye may sense.

RF front end

front endfrontendradio front ends
In a radio receiver circuit, the RF front end is a generic term for all the circuitry between a receiver's antenna input up to and including the mixer stage.

Microwave

microwavesmicrowave radiationmicrowave tube
Due to the high cost and maintenance requirements of waveguide runs, in many microwave antennas the output stage of the transmitter or the RF front end of the receiver is located at the antenna.