In a radio receiver, a beat frequency oscillator or BFO is a dedicated oscillator used to create an audio frequency signal from Morse code radiotelegraphy...

the receiver requires a circuit called a beat frequency oscillator (BFO). The third type of modulation, frequency-shift keying (FSK) was used mainly by radioteletype...

bridge oscillator is a type of electronic oscillator that generates sine waves. It can generate a large range of frequencies. The oscillator is based...

oscillator known as the local oscillator (LO). The mixer uses a non-linear component to produce both sum and difference beat frequency signals, each one containing...

Rudolph Goldschmidt for use in pre–vacuum-tube radio receivers as a beat frequency oscillator (BFO) to make continuous wave radiotelegraphy (Morse code) signals...

vacuum tube oscillator. The dynatron oscillator circuit was used to a limited extent as beat frequency oscillators (BFOs), and local oscillators in vacuum...

a "beat" frequency equal to the difference between the two frequencies is created. Adjusting the local oscillator frequency correctly puts the beat frequency...

abbreviation that stands for: Basic Formal Ontology Beat frequency oscillator used to create an audio frequency signal for receiving continuous wave (Morse code)...

eliminated). The carrier must be reintroduced at the receiver by a beat frequency oscillator (BFO). Carriers are also widely used to transmit multiple information...

Unlike the beat frequency oscillator or the induction balance machines, which both used a uniform alternating current at a low frequency, the pulse induction...

crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. The oscillator frequency is often...

demodulation, usually by means of a beat frequency oscillator (BFO). Failure of the BFO to match the original carrier frequency when receiving such a signal...

circuit Royer oscillator Vačkář oscillator Wien bridge oscillator Crystal oscillator Laser (oscillation of electromagnetic field with frequency of order 1015 Hz)...

local oscillator signal in a process called heterodyning, resulting in a signal at the difference or beat frequency. Intermediate frequencies are used...

signal with a locally derived carrier (the Beat Frequency Oscillator, or BFO) to produce an audio frequency copy of the original audio signal and a mixer...

mixed with a heterodyne signal from a BFO (beat frequency oscillator) to change the radio frequency impulses to sound. Almost all commercial traffic has now...

such as determining the frequency to which a receiver is tuned, from detecting the frequency of the beat frequency oscillator of the superheterodyne receiver...

(10-80m), dual tuning dials, RF and audio gain controls, beat frequency oscillator (controllable frequency), transmit/receive switch, sold for $119.95 at Sears...

of a beat frequency oscillator (BFO). In other words, it is just another stage of heterodyning. For this to work, the BFO frequency must be exactly adjusted...

heterodyne method is still used to receive CW signals, and the beat frequency oscillator (BFO) is a standard part of all communications receivers. K. G...

synchronous detection driven by a local oscillator whose frequency is identical to, or very close to the carrier frequency of the intended signal. This contrasts...

capacitively sense the relative position of the hands and control oscillators for frequency with one hand, and amplitude (volume) with the other. The electric...

bandwidth, but a beat frequency oscillator must be used at the receiver to reconstitute the carrier. If the reconstituted carrier frequency is wrong then...

original tones by mixing the FSK signal with a local oscillator called the BFO or beat frequency oscillator. These tones are fed to the demodulator part of...

fundamental frequency, or confusing long wave radio carriers with the higher harmonics. The received signal was mixed with a local beat frequency oscillator (BFO)...

harmonic oscillator over other forms of oscillator is that it employs resonance to vibrate at a precise natural resonant frequency or "beat" dependent...

low/medium frequency ground stations, like the beat frequency oscillator (BFO) and the non-directional beacon (NDB). These L/M frequency airways were...

Selling of the Fessenden Oscillator". Retrieved 16 March 2020. Fay, H. J. H. (1917). "Submarine Signaling-Fessenden Oscillator". Journal of the American...

SSB signals. They may also demodulate CW transmissions if the beat frequency oscillator is tuned slightly above or below the carrier. AM detectors cannot...

normally determined by the frequency of an oscillator crystal. Typically a crystal oscillator produces a fixed sine wave—the frequency reference signal. Electronic...