A tuned radio frequency receiver (or TRF receiver) is a type of radio receiver that is composed of one or more tuned radio frequency (RF) amplifier stages...

A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed...

capacitor-inductor tuned circuits. Tuning: To select a particular station the radio is "tuned" to the frequency of the desired transmitter. The radio has a dial...

center frequency. In receivers like the TRF in which the filtering is done at the incoming RF frequency, as the receiver is tuned to higher frequencies, its...

direct-conversion receiver (DCR), also known as a homodyne, synchrodyne, zero intermediate frequency receiver (zero-IF receiver), is a radio receiver design that...

The Neutrodyne radio receiver, invented in 1922 by Louis Hazeltine, was a particular type of tuned radio frequency (TRF) receiver, in which the instability-causing...

tuned radio frequency receiver (TRF), all of the receiver stages had to be simultaneously tuned. In addition, since the IF filters are fixed-tuned, the receiver's...

has one tuned circuit. The tuned radio frequency receiver (TRF) consists of a radio frequency amplifier having one or more stages all tuned to the desired...

early tuned radio frequency (TRF) receivers in the 1910s-1920s, beat with the carrier frequency of the station. Each time the radio was tuned to a different...

radio transmitter and in receivers that work by the superheterodyne principle. The oscillator controls the frequency to which the apparatus is tuned....

The verb tuning in radio contexts means adjusting the receiver to detect the desired radio signal carrier frequency that a particular radio station uses...

to the rest of the receiver. Radio signals at other frequencies are blocked by the tuned circuit and not passed on. A modulated radio wave, carrying an...

: 205–206 : 5  "Tuning" means adjusting the frequency of the receiver to the frequency of the desired radio transmission. The first receivers had no tuned circuit...

familiar form of radio receiver is a broadcast radio receiver, often just called a broadcast receiver or simply a radio, as used for radio broadcasting....

AN/ALR-20(A) is an airborne wideband tuned radio frequency receiver providing a panoramic display of Radio Frequency (RF) spectrum on US Air Force B-52...

the enablers of cognitive radio. Superheterodyne receivers use a VFO (variable-frequency oscillator), mixer, and filter to tune the desired signal to a...

with other users with similar radios, in contrast to a broadcast receiver, which only receives transmissions. Two-way radios usually use a half-duplex communication...

through a tuned circuit (LC circuit). The tuned circuit allows positive feedback only at its resonant frequency. In regenerative receivers using only...

circuit tuned to the frequency of an incoming radio signal. It is primarily used in radio receivers to keep the receiver tuned to the frequency of the...

The low-frequency radio range, also known as the four-course radio range, LF/MF four-course radio range, A-N radio range, Adcock radio range, or commonly...

years, they persisted with the tuned radio frequency receiver (TRF) principle, only adopting superheterodyne receiver (superhet) designs after some 10...

connects between a radio antenna and a radio receiver. The preselector is a band-pass filter that blocks troublesome out-of-tune frequencies from passing through...

of a fixed-frequency amplifier, simplifying tuning. Compare to its predecessor, the tuned RF receiver. IF amplifiers might use double-tuned amplifiers...

with a tuned circuit, all tuned to the frequency of the station. A major problem of early TRF receivers was that they were complicated to tune, because...

Resistance Front, a separatist group in Indian Kashmir Tuned radio frequency receiver, a type of radio Trinidadian Creole, by ISO 639 code TRF1, French howitzer...

"Victrolas with Radiola" incorporated a "five-tube Radiola tuned radio frequency receiver with orthophonic reproduction." A $650 "Victrola-Electrola"...

bandpass filter in the receiver consists of one or more tuned circuits which act like a resonator, similarly to a tuning fork. The tuned circuit has a natural...

Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3–30 kHz, corresponding to wavelengths from 100 to 10 km,...

resonates is called the bandwidth. Thus, a high-Q tuned circuit in a radio receiver would be more difficult to tune, but would have more selectivity; it would...

A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals...