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Receiver Circuits
Receivers:  # - B        C - H        I - P        Q - S        T - Z


Last Updated: October 24, 2017 02:55 PM
Circuits Designed by Dave Johnson, P.E. :

Optical Fiber Receiver-5Mhz Broad Band - This circuit is a simple broad band light detector that uses a very inexpensive IC and a PIN photodiode that is packaged for use with plastic optical fibers.  It has a bandwidth from 1KHz to over 5MHz.  It is great for experimenting with various modulated . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2000

Capacitance Proximity Switch
Draws very low power - Ideal for battery-powered applications
6 Models Available - Call 806-368-7747


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Natural Radio Reception -  "Natural Radio" is a fancy name for radio noise with natural origins, mainly lightning.  At first, you might think that listening to lightning crackles is pretty uninteresting but as it turns out, electromagnetic radiation from lightning can travel great distances and undergo strange modifications along the way __  Contact:  Charles Wenzel of Wenzel Associates, Inc.

New 12AT7 FM Tuner -  An improvement on the improved One Tube FM Tuner, this incorporates an RF stage __ Contact blehack @ yahoo dot com

New Lightning Detector -  Especially built for the beginner __  Contact:  Charles Wenzel of Wenzel Associates, Inc.

Noise-Muting FM Receiver -  The tuning of a frequency-modulated (FM) receiver to an FM radio station frequency involves a lot of ‘hissing’ noise in between the stations, which is very irritating for the operator and...__ Electronics Projects for You

Nostalgic Crystal Radio -  it was the first circuit I started with, and it can be build with really junk items.  Apart from the diode (which replacement would need a PbS, Lead Sulphyde, galena cristal) everything you can see in the circuit (for the no power version) can be built with enamel wire, alluminium cooking foil, carton wax and so on.  The real painful part is to find a high impedance headphone, it is unlikely yo find one at present day but it is possible __ Designed by Jonathan Filippi

Novel crystal set requires no antenna, earth -  amateur radio construction projects.   __ Designed by Peter Parker

Oak MSP Vibrator Notes -  information on the MSP/Oak/AWA vibrators used by AWA, Ferris and others.   __ Contact blehack @ yahoo dot com

Oddball SID Receiver Experiment (60 kHz) -  The live plot at the top of this page is being made by the following receiver:Note: The antenna/preamplifier at the top of this page is tuned to 60 kHz with a.03 uF capacitor for driving this experimental WWVB receiver.   __  Contact:  Charles Wenzel of Wenzel Associates, Inc.

Older Designs of Reflex Receivers -  The following circuits are included to give the experimenter ideas but they don't perform as well as the radios above.  The reflex radio will work with lower battery voltage but there will be less regeneration in the RF stage and more stages are needed to get enough volume to drive a speaker.   __  Contact:  Charles Wenzel of Wenzel Associates, Inc.

Olympic 7-532W & 7-532V -  Another mantel radio with Fremodyne FM receiver __ Contact blehack @ yahoo dot com

ON6MU's 50MHz CONVERTER PROJECT (based on a NE602/SA602/NE612) -  This is a very sensitive 50Mc converter allowing you to receive the entire "Magic Band" (50Mc  52Mc) on your general coverage receiver (28Mc  30Mc).  it receives all types of modulated transmissions.  it all depends on the receiver used.  I'vetested this project on a allmode Yaesu FRG-100 receiver.  Within certain limits you can change the output frequency to suit your needs.  The converter is very stable, low nois, sensitive and low on power consumption and can be compared to many commercial 50Mc receivers.   __ Designed by Guy Roels ON6MU

One Channel ADC for Radio-SkyPipe & Data Collect Lite -  This is a Radio Astronomy Project __ Designed by Radio-Sky Publishing

One transistor FM receiver -  A printed circuit board for the original circuit is available through FAR Circuits.   Ask them for "Andy Mitz's One transistor FM radio printed circuit board".   The circuit board must be modified for the improved one transistor radio __ Designed by Andrew R. Mitz

One Transistor FM Receiver 1 -  Uses MPF102 FET transistor and LM386 as an audio amplifier __ Designed by braincambre500 @ yahoo.com

One Transistor FM Receiver 2 -  This radio is sensitive enough to tune 20 stations across the FM band, some with volume high enough to drive a small PM speaker.  The ability to tune 88.9 MHz and 89.1 MHz is testimony of its selectivity.  The signal-to noise ratio rivals that of the better walkman type radios.  __ 

One transistor HF/VHF/UHF preamp using one BSX-20 transistor -  The MAR6 (MSA-0686, 0685, 0885) is a high performance silicon bipolar Monolithic Microwave integrated Circuit (MMIC ) housed in a low cost, surface mount plastic package. 
This MMIC  is designed for use as a general purpose 50 W gain block.  Applications include narrow and broad band iF and RF amplifiers in commercial and industrial applications.   __ Designed by Guy Roels ON6MU

One Transistor Regenerative Receiver -  This radio is sensitive enough to tune 20 stations across the FM band, some with volume high enough to drive a small PM speaker.  The ability to tune 88.9 MHz and 89.1 MHz is testimony of its selectivity.  The signal-to noise ratio rivals that of the better walkman type radios __ Designed by Phillip Crane mailto:plcrane @ delphia.net

One Tube FM Tuner -  From August 1960 Popular Electronics, it uses a 6C4 I constructed this project as closely as I could to the originalPerformance left a lot to be desired!   __ Contact blehack @ yahoo dot com

One Tube FM Tuner -  From August 1960 Popular Electronics, it uses a 6C4.  I constructed this project as closely as I could to the original.  Performance left a lot to be desired!  __ Contact blehack @ yahoo dot com

One Valve FM Receiver with Loudspeaker -  Using a single 6DX8, this receiver provides loudspeaker reception of FM stations __ Contact blehack @ yahoo dot com

One Valve FM Receiver with Loudspeaker  -  Using a single 6DX8, this receiver provides loudspeaker reception of FM stations __ Contact blehack @ yahoo dot com

One Watt Class-C Amplifier -  Schematic only, no circuit description __ Designed by © 2001 - YO5OFH, Csaba Gajdos

One-Transistor Amplifier/Detector -  An amplifier may be added to boost the audio level as shown below.  The current consumption of this amplifier is quite low and a power switch is not included.  Disconnect the battery when the receiver is stored for long periods.   __  Contact:  Charles Wenzel of Wenzel Associates, Inc.

Op Amp Radio -  Here is a simple radio that is easy to build and inexpensive.  in fact, you probobly have all the parts you need in your junk box.  You'll be suprised at the great reception with this little set.   __ Designed by Aaron Cake

Optical Fiber Receiver-5Mhz Broad Band -  This circuit is a simple broad band light detector that uses a very inexpensive IC and a PIN photodiode that is packaged for use with plastic optical fibers.  it has a bandwidth from 1KHz to over 5MHz.  it is great for experimenting with various modulated . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2000

Original Islander using the NTE342 Transistor -  My design of the islander came after one year of intense experimentation.  Formally, the last stage had 3 more variable capacitors.  but I took them out and adjusted their respective coils to a preset form.  thereby eliminating of having to adjust 5 variable capacitors.  My PCB design is a 'no hole' component mount.  The PCB does look rather worn __ Designed by braincambre500 @ yahoo.com

Other Repeater Controller Construction Projects -  The links below will allow you to build several working repeater controllers.  No warranty as to the quality or usefulness is expressed by Repeater Builder.__ 

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Receivers:  # - B        C - H        I - P        Q - S        T - Z

 


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