Build a Powerful FM Radio Bug Transmitter
Three-stage FM bug transmitter using BC547 audio preamp, RF oscillator/modulator, and 2N3563 power amplifier for…
Circuits
QRP
Transmitter
VHF/UHF
Articles
News
Reviews
Tools
MagSafe Breadboard Turns the iPhone into a Portable Electronics Prototyping Lab
MagSafe Breadboard is an innovative concept that attaches to an iPhone and turns it into…
Articles
News
Reviews
Turning the NXP TEF6686 Car-Radio Chip into a Versatile Multiband Receiver]]
From Car Dash to SDR Lab: Turning the NXP TEF6686 Car-Radio Chip into a Versatile…
Circuits
QRP
Transmitter
The Simple RF Indicator: A DIY Tool for Detecting RF Signals
The image depicts "Simple RF Indicator," passive device for detecting radio frequency (RF) signals in…
Circuits
DIY
Tools
Build a DIY Ion Detector: Detect Airborne Ions and Electrostatic Emissions
Build a simple handheld DIY Ion detector circuit using transistors to detect air ions, static…
Circuits
DIY
Tools
Automatic Battery Saver Circuit: Prevent Battery Drain
Dead batteries are every electronics enthusiast's nightmare. Whether it's a forgotten device left running overnight…
audio
Circuits
Pink Noise Generator Circuit Using 741 Op-Amps
Learn how to build a pink noise generator using 741 op-amps for audio testing and…
Circuits
DIY
QRP
Tools
Simple UJT Crystal Checker Circuit: Test Your Crystals Like a Pro
Stop guessing if your quartz crystals are dead or alive! Learn how to build a…
Circuits
DIY
Tools
Transmitter
Build Your Own Hidden Transmitter Hunter RF Sniffer Circuit
Ready to go on a "Fox Hunt"? Whether you are tracking down a hidden transmitter…
Circuits
HF
radio
Reception
Build Your Own Two Transistor Radio: A Simple DIY Project
Do you love electronics and want a fun, beginner-friendly project? Build a two transistor radio!…