FT2 – New Experimental Digital Mode Spotted on PSKReporter 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

FT2 – A New Digital Mode Hams Are Starting To Spot vu3dxr.in/ft2-a-new-di...

Beginner’s Guide to HF SSTV Setup with SSB Transceivers vu3dxr.in/setting-up-s...

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

Setting Up SSTV with HF SSB Transceivers: A Comprehensive Guide vu3dxr.in/setting-up-s...

High Gain Collinear Antenna for 145 MHz and 433 MHz Bands vu3dxr.in/high-gain-co...

Shortened G5RV Antenna - DX Power in a Smaller Package A compact, multi-band wire antenna based on the legendary G5RV design —specifically, a shortened version of G5RV antenna optimized for the 14-50 MHz range.

Shortened G5RV Antenna – DX Power in a Smaller Package vu3dxr.in/shortened-g5...

Building a Quarter-Wavelength Coaxial Collinear Antenna for 2 Meters vu3dxr.in/building-a-q...

Faulkner FM Loop Antenna for Superior FM Reception Learn how to build classic Faulkner FM Loop Antenna — effective design offering excellent FM radio reception across 87.5–108 MHz. Ideal for DXers and hobbyists.

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Build Your Own 6m Delta Loop Antenna: A Simple Weekend Project vu3dxr.in/build-your-o...

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

The Complete Guide to HF SSTV: From History to Your First Transmission vu3dxr.in/the-complete...

Radio Waves Weekly — Issue #004 vu3dxr.in/radio-waves-...

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 and propagation data.

Reverse Beacon Network: The Ultimate Guide for Ham Radio Operators vu3dxr.in/reverse-beac...

Stop Shouting! The Ultimate uBITX Microphone Preamplifier Fix low microphone audio on uBITX V3, V4, V5 and V6 transceivers with this simple 2N3904 mic preamplifier powered from the MIC+ line.

uBITX Microphone Preamplifier vu3dxr.in/ubitx-microp...

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.

Bi-Square Antenna: A High-Gain design for upper HF and VHF vu3dxr.in/bi-square-an...

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

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

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Practical guide to receiving HF weather fax WEFAX / Radiofax Learn how to receive HF Weather Fax (WEFAX) images using SDR or shortwave radios. Step-by-step guide for radio amateurs with frequencies, software tools,

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How to Build a Reduced Size 40M Antenna – Complete DIY Guide Build a compact reduced Size 40M Antenna using PVC spacers and simple materials. Get full measurements, design diagram, assembly steps, and tuning tips

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Shortened Inverted V Antenna for 80 Meters (3.700 MHz) vu3dxr.in/shortened-in...

UR0GT Broadband Avia Antenna: Ultimate Wideband VHF Antenna Detailed guide to building UR0GT Broadband Avia Antenna modified by RW4HVN. Covers dimensions, design principles, SWR performance, construction details

UR0GT Broadband Avia Antenna (RW4HVN Mod): The Ultimate Wideband VHF Antenna Guide vu3dxr.in/ur0gt-broadb...

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.

DIY 80m Magnetic Loop Antenna: A Compact Solution for Low Bands vu3dxr.in/diy-80m-magn...

sBitx v5.301 Update: New Features and Improvements Explained vu3dxr.in/sbitx-v5-301...

Terminated Mini Loop antenna : Small Space Ham Radio Antenna The Terminated mini loop antenna is a relatively simple antenna to construct. It can provide the user with wide/multi band access

Terminated Mini Loop Antenna : Small Space Ham Radio Antenna vu3dxr.in/terminated-m...

Build Your Own Micro Power AM Transmitter! Learn how to build a simple Micro Power AM Transmitter for short-range audio broadcasting. Great for beginners exploring amplitude modulation and radio circuits

Build Your Own Micro Power AM Transmitter! vu3dxr.in/build-your-o...

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 vu3dxr.in/simple-cw-tr...

Radio Waves Weekly — Issue #003 vu3dxr.in/radio-waves-...

W3DZZ Multi-Band Antenna 80m-10m Trapped Dipole Learn how to construct W3DZZ Multi-Band Antenna. Detailed instructions on 7MHz coaxial traps, wire dimensions, and LC tuning for 80, 40, 20, 15, and 10 meters.

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ATS20 Radio Review - Small Package, Big Performance The ATS20 radio receiver has emerged as a surprisingly capable compact multi-band radio that punches well above its weight class

ATS20 Radio Receiver: Comprehensive Review – Small Package & Big Performance vu3dxr.in/ats-20-radio...

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,

Microphone compressor using two transistors vu3dxr.in/microphone-c...

LILYGO T-Embed ESP32 SI4732 Radio: In-Depth Technical Analysis & User Review The LILYGO T-Embed ESP32 SI4732 radio represents a groundbreaking fusion of modern microcontroller technology and professional-grade radio reception capabilities.

LILYGO T-Embed ESP32 SI4732 Radio: In-Depth Technical Analysis & User Review vu3dxr.in/lilygo-t-emb...

Build a Simple Speech Processor Circuit Using LM358 vu3dxr.in/build-a-simp...