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It consisted of one or more tuned RF amplifiers, each consisting of a tuned circuit which functioned as a bandpass filter followed by an amplifier; a detector (demodulator) to extract the audio waveform from the radio carrier wave; followed by an audio amplifier.
Xilinx Spartan-6 ELAD FDM-S3 [42] Pre-built 9 kHz – 500 MHz 192 kHz – 24.576 MHz 16 N/A No 122.88 MHz/98.304 MHz USB 3.0 Yes No No ? ELAD FDM-DUO [43] Pre-built 10 kHz – 54 MHz (experimental up to 165 MHz) 192 kHz – 6 MHz 16 ? Yes 122.88 MHz 1/8+1 Embedded system + 3x USB 2.0 Yes No No Xilinx Spartan-6 Elecraft KX3 [44] Pre-built or kit
Circuit diagram of a crystal radio receiver: File usage. No pages on the English Wikipedia use this file (pages on other projects are not listed). Global file usage.
English: Block diagram of a tuned radio frequency (TRF) receiver, the simplest type of amplifying radio receiver circuit. It consists of one or more tuned RF amplifiers, each consisting of a tuned circuit which functioned as a bandpass filter followed by a radio frequency (RF) amplifier; a detector (demodulator) to extract the audio waveform from the radio carrier wave; followed by an audio ...
Block diagram of a superheterodyne receiver. The RF front end consists of the components on the left colored red. In a radio receiver circuit, the RF front end, short for radio frequency front end, is a generic term for all the circuitry between a receiver's antenna input up to and including the mixer stage. [1]
A radio receiver may be a separate piece of electronic equipment, or an electronic circuit within another device. 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. A broadcast receiver is ...
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 followed by a detector (demodulator) circuit to extract the audio signal and usually an audio frequency amplifier. This type of receiver was popular in the 1920s.
Three- and four-digit numeral-only systems were maintained by R.C.A., but also adopted by many other manufacturers, and typically encompassed rectifiers and radio transmitter output devices. Devices in the low 800s tend to be transmitter output types, those in the higher 800s are not vacuum tubes, but gas-filled rectifiers and thyratrons , and ...