Receivers ( 38 ) :

• 45-860MHz Radio receiver based on UV916-tuner - This receiver use a TV-tuner, a simple radio-circuit and a interface to a computer. The computer control (set) the receiving frequency from 45-860MHz. The purpose of this project is to learn about tuners.   
• 50 MHz Receiver based on MC3372 - The purpose of this project is to build a simple receiver for 50MHz. The Receiver is built around the circuit MC3372, wich is a narrow band FM receiver. The receiving frequency can be set with a LC tank or with a crystal.
• A Cameo - This is an FM receiver circuit which can receive signals between 88 and 108 Mhz. With the TDA 7000 you can build an FM radio with a minimum of components; most of them so easy to manage. Nevertheless, this IC in itself, is a complete superheterodyne receiver with all the problems of alignment previously solved by the constructing engineers.   
• A high-performance FM receiver for audio and digital applicatons - This receiver design offers high sensitivity and low distortion for today?s demanding high-signal environments.   
• Aircraft Receiver - A passive receiver for listening to the pilot, pdf file   
• AM radio circuit (by Fran Golden) - This AM radio circuit will demonstrate how a radio wave is received and detected, using a very simple tuned radio frequency design.   
• AM-Receiver for Aircraft communication (118.250MHz) - This is a tunable AM-receiver for 118.250 MHz frequency. This receiver is manually tunable with some 100kHz around the 118MHz.   
• A Short Wave Regenerative Receiver Project - A regenerative radio receiver is unsurpassed in comparable simplicity, weak signal reception, inherent noise-limiting and agc action and, freedom from overloading and spurious responses. In the comprehensive electronic project presented here, Charles Kitchin, N1TEV has provided us with a three stage receiver project which overcomes some of the limitations of this type of receiver, principally the provision of an rf amplifier ahead of the detector.   
• Building a Three-Penny Radio - A crystal radio is nice because it needs no power, and the materials can all be home-made or at least found around the house. This is a little bit more advanced device. The heart of the radio is a special 10 transistor integrated circuit in a tiny three-legged bit of plastic. This circuit comes ready-made with several amplifiers, the detector, and an Automatic Gain Control circuit that boosts the level of faint stations to match the strong ones, so no volume control is needed. This is called a "Three Penny" radio because it uses three shiny pennies as anchors for the various parts the radio needs. This makes the construction very easy.   
• Build the 'Moorabbin': A regenerative receiver for the AM broadcast band - This circuit first appeared in Amateur Radio, November 1999. It doesn't need an antenna, gives speaker reception of local AM broadcast stations and also receives amateurs talking on the 160 metre band.   
• Build your own superheterodyne receiver - simple three-IC superheterodyne radio to receive stations in the 4.5- to 10-MHz range   
• Classic detector enables low-cost receiver - super-regenerative receiver's sensitivity is better than 1 mV, and it operates over a wide range of VHF   
• Compact 20: A 14 MHz Direct Conversion Receiver - This is a no-frills homebrew direct conversion receiver that is capable of receiving local and overseas stations on the popular 14 MHz band. The well-known NE-602 is used as the product detector. A MPF102 RF amplifier assures adequate sensitivity. The audio stage uses the common 741/386 combination. Component values provide high and low frequency roll-off suitable for SSB (can be mofied for CW also). This set is ideal for portable use because of its low power consumption.   
• Crystal Radio - very simple circuit   
• Deluxe Direct Conversion Transceiver (Super Sprint Rig) - This direct conversion receiver uses 74HC4053 as a mixer and is virtually immune to AM SWBCI. Unique 74HC86 XOR gate based heterodyned VFO, crystal oscillator and mixer.   
• Doppler D/F Instruments - a doppler type VHF radio direction finder for HAMs and experimenters   
• Crystal Radio Set System Design, Measurement and Improvement - This site contains articles on design, measurement and improvement of crystal radio sets   
• Electronic Eaverhopping Device Detector - detects transmitters in 1-1000 Mhz range   
• FM Band Preamplifier - This low noise amplifier will bring in those low-power stations   
• FM crystal receiver with slope demodulation construction project - This is a passive FM receiver for 87-108 MHz band. It works only near transmitter sites. Reception range is approx. 4-7 miles using a 3 Ele. Yagi antenna.   
• FM Radio Spectrum Analyzer - a device which will display the strength of all FM Radio stations simultaneously   
• FM-ULA-vastaanotin - This circuit is a receiver for FM radio band 88-108 MHz. It operates from 8-12V DC. This circuit is based on TDA7000 IC. The documentation for this circuit is in Finnish.   
• Improving Receiver Sensitivity with External LNA - This application note presents the system level trade-offs involved in adding a low-noise amplifier (LNA) to a remote keyless entry (RKE) receiver. The system's sensitivity improves 3.77dB, but the third order intercept degrades by 15dB.   
• Improving the performance of an a.m. radio receiver - Here are some suggestions for improving the performance of the simple radio receiver circuit. Both simple AM receiver and improvements are shown in this article.   
• Old Time Crystal Radio - plans of one electronics kit   
• One Transistor FM Radio Project - description of low-cost FM-receiver kit   
• Op Amp Radio - very simple AM radio   
• Poor Man's Spectrum Analyzer - information about an electronics kit   
• A Simple-To-Build Superhet Receiver - a simple circuit for a superhet radio receiver that can be built up in sections, with each section tested before assembly, can be tuned to different bands   
• Simple AM Radio Receiver & Amplifier - This is an extremely simple AM radio receiver and amplifier circuit which is capable of driving a small, 8 ohm speaker. Construction is simple and could be performed on a breadboard with decent results.   
• Simple Op-Amp Radio - This is basically a crystal radio with an audio amplifier which is fairly sensitive and receives several strong stations in the Los Angeles area with a minimal 15 foot antenna.   
• Single chip builds tiny aircraft receiver - This is a simple AM receiver for 108 to 135 MHz using single-chip NE605.   
• Spectrum analyser kid - simple spectrum analyzer for frequencies between 0 and 33 MHz   
• The R2 Single Sideband Direct Conversion Receiver, Revisited: The R2a   
• $10 receiver has microvolt sensitivity - three-transistor circuit receives signals in the 5- to 15-MHz short-wave band and operated from 9V battery   
• Super Scanner 45-860MHz with 0.01Hz stepsize. - This receiver is based on a TV tuner, a DDS circuit and a radio circuit. This receiver will work from 45 to 860 MHz and the step size can be down to 0.01Hz Why not use this receiver as a Spectrum Analyzer or a NOAA satelit receiver? How about that!   
• 45-860MHz Radio receiver based on UV916-tuner - This receiver use a TV-tuner, a simple radio-circuit and a interface to a computer. The computer control (set) the receiving frequency from 45-860MHz. The purpose of this project is to learn about tuners. The UV916 or UV918 tuner is easy to find in broke TV or VCR:s because it is a common tuner. This circuit can receive FM transmissions.   

Receiver accessories

• Add a signal-strength display to an FM-receiver IC - The Philips TDA7000 integrates a monaural FM-radio receiver from the antenna connection to the audio output. External components include one tunable LC circuit for the local oscillator, a few capacitors, two resistors, and a potentiometer to control the variable-capacitance-diode tuning. The IC has an FLL (frequency-locked-loop) structure. You can obtain the information related to the intensity of the received signal at the output of the IF filter.   

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