ATS-20 is a compact SI4732-based multiband DSP receiver covering FM, MW, SW, and SSB — a highly sensitive portable radio with external antenna support and mod-friendly firmware
Guide
Master the essentials of amateur radio with the comprehensive guides available at vu3dxr.in. This category offers step-by-step instructions on SDR setup, antenna tuning, and radio operation. From beginner basics to advanced technical configurations, find the practical knowledge and tutorials needed to succeed in your DIY radio projects and communication
Exploring the LILYGO T-Embed SI4732 Radio Receiver
LILYGO T-Embed SI4732 combines an ESP32-S3 microcontroller with a DSP multiband radio (AM/FM/SW/LW + SSB), IPS display, and wireless connectivity — a compact programmable receiver for makers and radio enthusiasts.
Terminated Antennas for HF Ham Radio: A Technical Guide
This guide explains terminated antennas for HF ham radio, which use resistors to absorb reflected energy and maintain stable impedance across wide frequency ranges. It covers designs like Beverage and T2FD antennas, highlighting their broadband performance, directional patterns, and suitability for multiband, low-noise, and space-restricted installations.
Breathing New Life into an Old Workhorse: My Dell OptiPlex 980 RAM Upgrade Saga
From a fellow ham radio enthusiast, I recently acquired a refurbished Dell OptiPlex 980. My plan is to turn this vintage desktop into a dedicated machine for amateur digital operations like FT8, a task that doesn’t demand cutting-edge hardware but certainly benefits from stable performance. The system arrived with Windows 7 Pro 64-bit pre-installed, which […]
Fixing Poor Audio Quality in uBITX V6.1 HF Transceiver
The uBITX V6.1 is a popular amateur radio transceiver kit. It’s designed for ham radio operators who enjoy building their own equipment. Moreover, it offers great value for money and covers multiple frequency bands. However, like many DIY kits, it sometimes needs tweaking to perform at its best. uBITX V6.1 – My Audio Problem Story […]