RF Receivers

A radio receiver is an electronic circuit that receives its input from an antenna, uses electronic filters to separate a wanted radio signal from all other signals picked up by this antenna, amplifies it to a level suitable for further processing, and finally converts through demodulation and decoding the signal into a form usable for the consumer, such as sound, pictures, digital data, measurement values and navigational positions. Consumer audio and high fidelity audio receivers and AV receivers used by home stereo listeners and audio and home theatre system enthusiasts.

Communications receivers, used as a component of a radio communication link, characterized by high stability and reliability of performance. Simple crystal radio receivers (also known as a crystal set) which operate using the power received from radio waves. Satellite television receivers, used to receive television programming from communication satellites in geosynchronous orbit.

Specialized-use receivers such as telemetry receivers that allow the remote measurement and reporting of information. Measuring receivers (also: measurement receivers) are calibrated laboratory-grade devices that are used to measure the signal strength of broadcasting stations, the electromagnetic interference radiation emitted by electrical products, as well as to calibrate RF attenuators and signal generators.

Scanners are specialized receivers that can automatically scan two or more discrete frequencies, stopping when they find a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases. They are mainly used for monitoring VHF and UHF radio systems.

Internet radio device.

DSP technology, short for digital signal processing, is the use of digital means to process signals and is coming into wide use in modern shortwave receivers. It is the basis of many areas of modern technology including cell phones, CD players, video recorders and computers. A digital signal is essentially a stream or sequence of numbers that relay a message through some sort of medium such as a wire.

Simple LF converter

This converter allows coverage from 25 kHz up to 500 kHz. Use short coax from the converter to receiver antenna input..

Single injector-tracer

In the "Trace" mode the non-linear operation of the amplifier will detect modulated rf signals which will be filtered by the .001 ÂµÂ¥ capacitor and heard in the headphones. ..

Cmos line receiver

The trip point is set half way between the supplies by Rl and R2; R3 provides over 200 mV of hysteresis to increase noise immunity. Maximum frequency of operation is about 300 kHz. If response to TTL levels is desired, change R2 to 39 K..

Vlf Whistler Receiver Circuit

The VLF whistler receiver is intended to listen to natural radio noise and signals that occur below 20 kHz. LI is a large loop antenna that is 250 to 300 turns #26 gauge wire on a form 3` diameter...

Old-Time Radio

This circuit was used in the early days of radio to receive signals. Almost any battery-operated triode, such as a type 30, ..

Hf Transceiver Mixer

The transceiver mixer and carrier oscillator in the band-imaging (7- and 14-MHz) CW transceiver. Careful selection of ..

Analog multiplier

The F â€” V input frequency is locked to the V â€” F output because the LTClG43's clock is common to both sections. The F â€” V's reference is used as one input of the multiplier, while the V â€” F furnishes the other. ..

Carrier-current-am-receiver

The AM Tuned Radio Frequency (TRF) receiver, has a sensitivity of about 1 m V at tbe input for an audio output of "iz W. Capacitor C22 couples audio signals from the power line to the PC board-it must be rated at 600 Vdc. R8 will cause F1 to blow, if C22 shorts. The signal from C22 goes to a tuned network (C1 through C5, Ll, and L2) that has a 20-kHz bandwidth, which allows only the desired signal to pass through. IC1 is a gain block i-f chip that has AGC capability.....

Crystal Radio II

Nice Crystal Radio with 1N34A Germanium Diode...

Conversion Receiver For 160 To 20M Circuit

Note that Tl and T2 are TOKO, including part numbers for the coils Tl and T2. The direct-con-version receiver shown uses a double-tuned input network made from readily available TOKO coils. IC1, an NE602, acts as a VFO and mixer, with the output being an IF frequency in the audio range. ..

Quadrature FM Detector

Quadrature FM detectors use a high-reactance capacitor (C2) to produce two signals with a 90 degree phase difference. The phase-shifted signal is then applied to an LC-tuned resonant at the carrier frequency (L1 and C3). Frequency changes will then produce an additional leading or lagging phase shift into the mixer. The diagram at right shows the impedance and the phase of a LC tuned circuit at 455kHz. As you can see, the phase (red curve) is 0 at the resonans. If the.....

CW reciever with Tubes

FM Receiver

An FM regenereative receiver using a single FET and one audio amplifier IC...

TDA7000 FM Radio

This extremely simple FM radio receiver circuit is made possible by the special purpose TDA7000 IC. It integrates nearly all the functions necessary to build an FM receiver needing only a few external capacitors and a tuning circuit. Using a simple active RC filter made of only a single inductor, a few resistors and a varicap, this FM receiver will pick up broadcast radio between about 88 and 108 MHz. The mono output signal can then be used to drive a set of high impedance.....

ZN414 Portable Receiver

An AM portable radio receiver made from the ZN414 IC. The ZN414 ic has now been replaced by the MK484 which is identical in performance and pinout...

Tx/Rx Control

This circuitry offers some features that are highly desirable when building a QRP (or ANY) transceiver. It also includes a combination of features that many might not always take the time to include in their projects. Considerable effort has been made to assure that in this design, the RIT (RX frequency offset control) voltage and the TX frequency offset control signals are immune to supply voltage variations. IC1 requires a regulated +6 V voltage for proper operation......

Single chip builds tiny aircraft receiver

It`s easy to become bored spending time in airports. After all, you can do only so much work on a notebook computer with no reference material around. So, relax and have some fun at the airport--build the tiny, single-chip, aircraft-band radio in Figure 1 and listen to the planes come and go. The aircraft band extends from 108 to 135 MHz, and the communications are in AM mode...

RF Recieving Amplifier for 40MHZ

The sensitivity of receiver it is possible to increase itself considerably, if is interfered, between this and his aerial, a amplifier RF. The amplifier of circuit, does not use in resonant circuits and for this is suitable, so much for mid waves, what for the low waves, up to the 40 MHZ. The gain his it is the order 20db and it consumes 7mA, when it is supplied with 12 until 15V dc. His entry and the exit are adapted with coaxial cable, complex resistance 75ohm. ..

$10 receiver has microvolt sensitivity

The three-transistor circuit in Fig 1 costs less than $10 to build, uses commonly available components, and consumes less than 10 mA from a single 9V battery. If you wind coil L1, as the figure shows, the circuit receives signals in the 5- to 15-MHz short-wave band. You can add turns to or subtract turns from L(or change C2) to receive other frequencies. Q1, a 10½ bipolar transistor, acts as a high-gain regenerative stage and amplifies microvolt-level signals at the.....

Police and airplane reception tube reciever

The Philco radio is a nine tube superheterodyne reciever combining standard broadcast, police and airplane reception and employs the high efficiency 6.3 volt filament tubes, automatic volume control, bass compensating tone control, shadow tuning and push pull pentode output...

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AM receiver circuit ~ why how diagram

Here is a low cost AM receiver circuit that can be tuned from around 550 to 1100 KHz. Three transistors are used in this project. The transistors Q1 and Q2 are wired as a compound transistor pair i...

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Thanks to everyone for visiting the product Genie 36521R Intellicode Internal Receiver Circuit Board Replaces 20437R 31171R B008UDU086 this is product good quality . This is Check Price & Review pr...

88MHz to 108 MHz simple FM radio receiver circuit - Electronics ...

Fast Diagrams: TDA1072A for AM receiver circuit

This TDA1072A integrated AM receiver circuit performs the active and part of the filtering functions of an AM radio receiver. TDA1072A is intended for use in mains-fed home receivers and car radios...

AM Receiver Circuit Using Transistor | download free wiring diagram

This is the simple design and sensitivity and selectivity of the receiver are good. This circuit is use a compact three transistor, regenerative receiver with fixed feedback. The circuit is based o...

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