Learn how to convert a standard AM radio into an SSB receiver using a simple BFO circuit. Step-by-step guide to receiving single sideband signals on your homebrew or vintage radio.
HF
The HF category brings together all content related to high‑frequency bands, from 160 m through 10 m, with emphasis on practical antennas, propagation, and station hardware. Here you will find compact 40 m verticals, multiband wire antennas, HF QRP transmitters, SDR transceivers, and accessories designed for real‑world home and portable operation. Articles often include measured SWR curves, on‑air reports, and build photos so you can understand how a design will behave before you start cutting wire.
There is a strong focus on getting HF on the air from small Indian plots, apartments, and field locations without sacrificing too much performance. Whether you are preparing for your first HF QSO, improving your 40 m NVIS coverage, or chasing DX on higher bands during good conditions, this section provides tested ideas to upgrade your HF station step by step
Active AM Band Antenna for Better Reception
Improve AM signals! Build an active am band antenna with this simple circuit. Boost weak signals with JFET input & multi-stage amplification. Easy DIY
How to Build a 3-Watt AM Radio Transmitter
There is something magical about hearing your own voice or music coming through a vintage tube radio from across the room—or across the neighborhood. While many low-power “flea” transmitters struggle with range, this 3-Watt AM monster brings some real “punch” to the Medium Wave band.
In this project, we’re stepping up the power. Using the classic BD139 transistor and a rock-steady crystal oscillator, we’ll build a transmitter that balances simplicity with performance. Whether you’re a Part 15 enthusiast or just want to experiment with AM modulation, this circuit is the perfect way to become your own local broadcaster. Let’s get on the air!
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! This classic DIY project, featuring simple components, gained popularity years ago and still teaches radio technology effectively. Let’s explore how you can create your own two transistor radio easily. What is a Reflex Circuit? A reflex circuit cleverly reuses one […]
Crystal Radio Explained – How to Build Your Own No Power Radio
Discover the magic of “no-power” radio! Step-by-step instructions on building a crystal set that runs entirely on the energy of the radio waves it receives.
DIY IRF510 AM Transmitter Circuit
This blog post dives into a detailed DIY IRF510 AM transmitter circuit using the IRF510 MOSFET, perfect for radio enthusiasts and electronics hobbyists
Signal Booster enhancing RF Performance of radio receiver
If your receiver needs a higher level of signal across the entire matching network, this signal booster circuit can furnish the solution. This Signal booster circuit, built around a few transistors and support components, offers an RF gain of about 12 to 18 dB from about 100 kHz to over 30 MHz
Simple Signal Grabber Circuit for shortwave reception
If you’re working with RF circuits and need to improve signal reception or create a compact antenna solution, the Signal Grabber circuit is an excellent project to tackle. This clever design creates a short pull-up antenna that delivers impressive performance in a small package. The Signal Grabber is a specialized RF circuit designed to create […]
Simple DIY Active Antenna for Crystal-Clear Reception
Tired of static on your AM or shortwave radio? Do you struggle to hear distant stations? There is a simple fix. You can build a special antenna that makes radio signals much stronger. This guide shows you how to build a DIY active antenna. It is a fun project that can give you crystal-clear reception. […]
80 meter 1W QRP Transmitter with Ceramic Resonator Control
Simple 80 m CW transmitter using a 3.58 MHz ceramic resonator for frequency stability and MOSFET power stage — ideal first HF QRP build for beginners