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RF Radio Frequency Receivers

1 Transistor FM Receiver
136 kHz Direct Conversion Receiver
2 Transistor Audio Amplifier
30m Direct Conversion Receiver
4 Band Double Tuned Preselector
4.5 10Mhz Superheterodyne RCVR
40m Direct Conversion Receiver
42 Mc Band to 88 Mc Band (retrofit Converter) Project
49MHz Walkie Talkie
50 MHz to 146 MHz Converter
80 Meter CW ARDF Receiver
80M ARDF Direction Finder
80m Direct Conversion Receiver
80m Direct Conversion Receiver
AM Broadcast Band Active Antenna
AM Broadcast Band Regenerative Receiver
AM Radio
AM Radio Preamplifier
AM Radio Preamplifier
AM Receiver
Bipolar Regenerative Receiver
Build your own Superheterodyne Receiver:  08/01/96 EDN-Design Ideas
Car Radio tunes theAmateur Bands
Compact L Match ATU for Portable use
Crystal Radio #2:  RF Receivers & Receiver Circuits Crystal Radio
Crystal Radio 3
Crystal Set that Requires No Antenna
Crystal-Controlled Time-Base Generator
CW Receiver 40 / 80 Meter CW Receiver
CW zero Beat indicator
Economoy Short Wave Radio
Four Band Double Tuned Preselector
One Transistor FM Receiver
One Transistor Regenerative Receiver
OpAmp Radio
Phase Shift Radio Direction Finder
Popcorn Direct Conversion Receiver
Q  Multiplying Loop Antenna
Several Receiver Circuits
Short wave radio
Simple Circuit Detects Current Pulses:  01/06/94 EDN-Design Ideas / The pulse detector provides a visible indication of positive and negative current pulses. The pulses amplitudes can vary from20 to150 mA. The pulses durations can range from10 to40 msec, and their repetition rate can span40 to180 pulses/minute.  
Single Chip Builds Tiny Aircraft Receiver:  09/25/97 EDN-Design Ideas
SOP Direct Conversion Receiver
SOP Receiver
Super 80 ultra Simple SSB Receiver for 3.5 MHz
Superhet Receiver:  This idea presents a simple circuit for a superhet radio receiver that can be built up in sections, with each section tested before assembly. The receiver circuitry as presented here can be built for less than $50.
Superregenerative 27MHz Receiver
Superregenerative 27MHz Receiver
Supreg 27Mhz Receiver
SW Receiver using the ZN415
SWatt RF Preamplifier
Synthesized HF Receiver
Talking Receiver
TBA120 Narrowband FM Receiver
TDA7000 Receiver
The MRX 40 Mini Receiver
Toroidal Coil RF Shortwave Receiver
Two Band Radio
Two Transistor Audio Amplifier
ZN414 AM Receiver
ZN414 Receivers

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