Join the 8-Meter Experiment: Monitor FT8 on 40.680 MHz with WQ2XDM

Join the 8-Meter Experiment: Monitor FT8 on 40.680 MHz with WQ2XDM: 8-Meter Experiment Monitor WQ2XDM's FT8 on 40.680 MHz for 8-meter propagation research. Decode signals, submit reports, and help prove Sporadic-E paths.

FT2 Digital Mode: Speed King With Serious Growing Pains

FT2 Digital Mode: Speed King With Serious Growing Pains: FT2 is the fastest HF digital mode, but hams report sensitivity, timing, software, and trust issues. Detailed real‑world feedback from operators worldwide

FT2: The Fastest Digital Mode in Amateur Radio

FT2: The Fastest Digital Mode in Amateur Radio: FT2 is an experimental, high-speed weak-signal digital mode designed for amateur radio, specifically developed by IU8LMC to be significantly faster than FT8

FT2 – A New Digital Mode Hams Are Starting To Spot

FT2 – A New Digital Mode Hams Are Starting To Spot: FT2 is an emerging weak‑signal amateur radio mode now visible on PSKReporter, offering hams another option next to FT8 and FT4 for HF QSOs and propagation monitoring

Beginner’s Guide to HF SSTV Setup with SSB Transceivers

Slow Scan TV (SSTV) with HF SSB Transceivers: A Comprehensive Guide

If you are interested in transmitting images across the globe using radio waves, Slow Scan TV (SSTV) is an excellent mode to explore. The latest guide on VU3DXR.in provides a detailed walkthrough on how to interface your HF SSB transceiver with your PC to begin sending and receiving images.

Key Topics Covered:

• Hardware Requirements: Detailed information on necessary equipment, including Signalink, various rig interfaces, and DIY cabling options.

• Software Configuration: A step-by-step guide to setting up standard software like MMSSTV or QSSTV.

• Operating Frequencies: Guidance on finding active SSTV frequencies, such as the 14.230 MHz USB hotspot on the 20m band.

• Signal Optimization: Instructions on managing ALC and audio levels to ensure high-quality image resolution.

Why Operate SSTV? Unlike text-based digital modes, SSTV allows operators to share personalized QSL-style images, weather data, or station photos. It offers a unique combination of analog signal characteristics and modern digital processing, providing the satisfaction of seeing an image resolve line-by-line from a distant station.

This guide is designed for both experienced DXers and those new to amateur radio who wish to expand their technical capabilities.

Read the full tutorial here: Setting Up SSTV with HF SSB Transceivers

Setting Up SSTV with HF SSB Transceivers: A Comprehensive Guide

Setting Up SSTV with HF SSB Transceivers: A Comprehensive Guide: Master SSTV setup with uBITX/sBITX transceivers. Audio interfacing, PTT control, software config, troubleshooting. MMSSTV, QSSTV guides included.

Build Your Own Indoor Antenna for 7 MHz HF Band

Build Your Own Indoor Antenna for 7 MHz HF Band: Discover how to build a compact indoor antenna for 7 MHz using a simple coil-based design. Ideal for amateur radio operators with space constraints

DIY 145 MHz Twin Delta Loop Antenna for Ham Radio Operators

DIY 145 MHz Twin Delta Loop Antenna for Ham Radio Operators: A complete guide to building 145 MHz Twin Delta Loop antenna with dimensions, construction tips, feeding method, and performance advantages for VHF ham radio.

The Complete Guide to HF SSTV: From History to Your First Transmission

The Complete Guide to HF SSTV: From History to Your First Transmission: Learn how to set up SSTV (Slow Scan Television) on your SSB transceiver. Complete guide covering SSTV history, technical fundamentals, audio setup configuration

Reverse Beacon Network: The Ultimate Guide for Ham Radio Operators

Reverse Beacon Network: The Ultimate Guide for Ham Radio Operators: Discover how the Reverse Beacon Network revolutionizes amateur radio by providing real-time signal reports. Learn how RBN works, its benefits, and how to use it

uBITX Microphone Preamplifier

uBITX Microphone Preamplifier: If you own a uBITX transceiver—whether it’s the V3, V4, or V6—you’ve likely experienced the infamous low microphone audio issue. This isn’t a defect in your particular radio; it’s a well-known characteristic across all uBITX versions. The microphone input stage simply doesn’t provide enough gain for electret microphone elements, forcing operators to speak unnaturally loud or practically yell to achieve full power output.

Bi-Square Antenna: A High-Gain design for upper HF and VHF

Bi-Square Antenna: A High-Gain design for upper HF and VHF: Build a high gain bi-square antenna for higher HF bands. Get 4dB gain over dipole on 10 meters with detailed calculations, matching solutions, operation tips.

Building HF Linear Push-Pull Amplifier with IRF510 MOSFETs

Building HF Linear Push-Pull Amplifier with IRF510 MOSFETs: Build a powerful HF Linear amplifier using IRF510 MOSFETs in push-pull configuration, covers complete circuit design, component selection, and practical tips

Microphone Preamplifier with Diode Clipper for SSB Transceivers

Microphone Preamplifier with Diode Clipper for SSB Transceivers: Learn how to build high-performance microphone preamplifier featuring a diode clipper. This guide breaks down transistor stage and 1N914 limiting mechanism

Practical guide to receiving HF weather fax WEFAX / Radiofax

Weather Facsimile—commonly known as WEFAX, HF-FAX, or Radiofax—is easily one of the most rewarding niches in the shortwave hobby. There is a certain “magic” in tuning your receiver to a scheduled frequency and watching a high-resolution synoptic chart or satellite image slowly materialize on your screen, line by line, over several minutes.

While it feels like a relic of a pre-internet era, Radiofax remains a vital, free resource for mariners and a fascinating challenge for radio enthusiasts. This guide covers everything you need to get started in 2026, from understanding the signal to troubleshooting your first decode.

Practical guide to receiving HF weather fax WEFAX / Radiofax: 

DIY 80m Magnetic Loop Antenna: A Compact Solution for Low Bands

DIY 80m Magnetic Loop Antenna: A Compact Solution for Low Bands: Learn how to build a compact 80m Magnetic Loop Antenna. Includes dimensions, capacitor specs, and tuning tips for efficient HF operation in small spaces.

sBitx v5.301 Update: New Features and Improvements Explained

sBitx v5.301 Update: New Features and Improvements Explained: Technical overview of sBitx v5.301 software update by the Radio & Electronics Hub Covers remote TX capabilities, web interface overhaul, digital mode support.

Simple CW 74HC240 Transmitter using buffer IC

Simple CW 74HC240 Transmitter using buffer IC: This is a simple but effective CW 74HC240 transmitter design using a octal buffer IC 74HC240 as the main component, operates at 7.023 MHz .

Simple CW 74HC240 Transmitter using buffer IC

Simple CW 74HC240 Transmitter using buffer IC: This is a simple but effective CW 74HC240 transmitter design using a octal buffer IC 74HC240 as the main component, operates at 7.023 MHz .

Exploring the LILYGO T-Embed SI4732 Radio Receiver

Exploring the LILYGO T-Embed SI4732 Radio Receiver: The LILYGO T-Embed SI4732 is a compact, feature-rich development board that combines the power of the ESP32-S3 microcontroller with the versatile SI4732

Building Steve Quest’s Simple AM Transmitter

Building Steve Quest’s Simple AM Transmitter: Steve Quest AM Transmitter, a popular and relatively straightforward design for hobbyists. It is a is fun to build and teaches basic radio principles

Microphone compressor using two transistors

Microphone compressor using two transistors: Microphone compressor is a useful tool that can help you to achieve more consistent and polished sound. By reducing gain of the loudest parts of your signal,

LILYGO T-Embed ESP32 SI4732 Radio: In-Depth Technical Analysis & User Review

LILYGO T-Embed ESP32 SI4732 Radio: In-Depth Technical Analysis & User Review: Discover the LILYGO T-Embed ESP32 SI4732 — a compact, programmable radio platform blending modern tech with professional-grade reception. Perfect for enthusiasts

Building End Fed Half Wave antenna (EFHW) for 40M – 10M

Building End Fed Half Wave antenna (EFHW) for 40M – 10M: The End Fed Half Wave Antenna (EFHW) 40m – 10m antenna is one of the most popular and versatile multi-band antennas for amateur radio. It requires only a single support, is quick to deploy, and offers excellent performance across the 40m, 20m, 15m, and 10m bands. This design is perfect for operations like POTA (Parks on the Air) or SOTA (Summits on the Air), or simply for hams with limited space.

Near Vertical Incidence Skywave (NVIS): The Definitive Guide to Reliable Regional HF Radio

Ever wonder why your HF signal skips over the next town but hits the next continent? 🌎

Master NVIS (Near Vertical Incidence Skywave) to close the gap! Perfect for regional nets and emergency comms when the repeaters go down.

Check out the definitive guide here: 👇 https://vu3dxr.in/near-vertical-incidence-skywave-nvis-the-definitive-guide-to-reliable-regional-hf-radio/

#HamRadio #RadioOperator #NVIS #VU3DXR #AmateurRadio

Simple UJT Morse Code Practice Oscillator Circuit

Simple UJT Morse Code Practice Oscillator Circuit: Learn to build a simple UJT Morse code practice oscillator with basic components. Perfect beginner electronics project for ham radio enthusiasts.

Build Your Own Solar Powered Radio

Build Your Own Solar Powered Radio: Solar cells can easily provide enough power to operate a small radio receiver. This Solar Powered Radio project is an ideal set to take away on holiday.

27MHz AM Transmitter Circuit for hobbyists

27MHz AM Transmitter Circuit for hobbyists: Explore the classic 27MHz AM Transmitter circuit. Learn about its oscillator, modulation, and power stages to build your own radio projects.

DIY Active Antenna: Boost Weak HF/VHF Signals

DIY Active Antenna: Boost Weak HF/VHF Signals: DIY Active Antenna for superior HF and VHF reception! This DIY electronics project amplifies weak signals to lift hard-to-hear broadcasts out of the noise

Mini Radio Pocket SI4735 Dual Core – Latest Firmware Update Brings EiBi Extensions & Power Saving Mode

Mini Radio Pocket SI4735 Dual Core – Latest Firmware Update Brings EiBi Extensions & Power Saving Mode: New Pocket SI4735 firmware adds EiBi transmitter details, distance calculation, manual time entry and eco mode that significantly extends ESP32-S3 battery life.

sBitx v5.3: A Detailed Look at the New Software Release

sBitx v5.3: A Detailed Look at the New Software Release: A breakdown of the sBitx v5.3 release, focusing on the new touch-friendly UI, xOTA logging features, and hardware protection