$10 Receiver has MicroVolt Sensitivity:  08/18/94 EDN-Design Ideas / (Electronic Circuit diagram added 03/03)  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....  

136 kHz Direct Conversion Receiver:  (Electronic Schematic / circuit added 4/02)

16 Bit PC Serial Port Receiver (Cmos):  (Circuit / schematic design added 6/06)

2 Watt Switching Power Supply:  from 6V to14V (Circuit / schematic design added 6/06)

27MHz toy car receiver:  (Electronic circuit added 4/05)

32 Bit Serial Receiver (57.6 K Baud TTL and CMOS):  (Circuit / schematic design added 6/06)

4 Band Double Tuned Preselector:  (Electronic Schematic / circuit added 4/02)

40 Meter Direct Conversion Receiver:  (Electronic Circuit / Schematic added 10/04)

40m Direct Conversion Receiver:  (added 8/03)

42 Mc Band to 88 Mc Band (retrofit Converter) Project:  (Electronic Schematic / circuit added 4/02)

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, it's a pre-project for my Spectrum analyzer project. The UV916 or UV918 tuner is easy to find in broke TV or VCR:s. It is a common tuner...   (Electronic circuit added 4/05)

49MHz Walkie Talkie:  Lots of people are requesting walkie-talkie and RF remote control schematics, so here is some. Building these circuits needs special equipment and expertise in RF circuits. If you are going to experiment with these circuits, please note that I did not build them, and I am not able to help you with any details. If you have no experience in RF, I suggest that you choose the easy way and buy a ready-made RF module. Otherwise you can realize you have an exact copy of a circuit in your hand, still it doesn't work the way it should.  (added 8/03)

50 MHz to 146 MHz Converter:  (added 2/05)

80 Meter CW ARDF Receiver:  (added 8/03)

80m Direct Conversion Receiver:  (added 2/05)

8644A-2 Air Navigation Receiver Testing With The Agilent 8644A:  Agilent Application Note   (Circuit / schematic design added 6/06)

A GPS Receiver Based Frequency Standard:  (Circuit / schematic design added 6/06)

A Low Cost 4Mbps IRDA Receiver in MS8 and SO-8 Package (LT1328):  DN152 -  Design Notes (Linear Technology) (added 1/06)

Add a signal strength display to an FM Receiver IC:  09/05/02 EDN Design Ideas  /  (added 1/05)  The Philips (www.semiconductors.philips.com) 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....

Aircraft Receiver:  (added 8/03)

Alternative Power Source for Magellan GPS Receivers:  (Circuit / schematic design added 6/06)

AM BCB Radio Receiver:  (added 8/03)

AM Radio PreAmplifier:  (Electronic Schematic / circuit added 4/02)

AM Receiver for Aircraft Communications:  (added 8/03)

AM Receiver:  (added 8/03)

Amazing All Band Receiver:  (added 8/03)

AM-Receiver for Aircraft communication (118.250MHz):  (Electronic circuit added 4/05)

An Optimized DCE Interface for V.34 Modems using the DS8933 and DS8934 Line Drivers and Receivers:  National Semiconductor - Application Note   (Circuit / schematic design added 6/06)

AN-1020: Demodulating with the LMX2240 150 MHz IF Receiver:  National Semiconductor - Application Note   (Circuit / schematic design added 6/06)

AN-1034: An Optimized DCE Interface for V.34 Modems using the DS8933 and DS8934 Line Drivers and Receivers:  National Semiconductor - Application Note   (Circuit / schematic design added 6/06)

AN-214: Transmission Line Drivers and Receivers for TIA/EIA Standards RS-422 and RS-423:  National Semiconductor - Application Note   (Circuit / schematic design added 6/06)

AN-302: Exploit Digital Advantages in an SSB Receiver:  AN-302 - Analog Devices Application Notes  (Circuit / schematic design added 6/06)

AN-759: Comparing EIA-485 and EIA-422-A Line Drivers and Receivers in Multipoint Applications:  National Semiconductor - Application Note   (added 2/06)

AN860: RFRXD0420 ASK Receiver Reference Design:  Microchip Application Note - Published 27-Dec-02   (Circuit / schematic design added 6/06)

Aviation Band Receiver:  (Circuit added 9/04)