Troubleshooting guide for the LARCSet V3.0 40 m SSB/CW transceiver kit covering common failures, low mic gain, tuning issues, and PA faults. Community-proven fixes and mods from BITX20 builders improve stability, audio, and output power.
radio
The radio category groups together posts that are about complete radios and operating rather than individual circuits—transceivers, receivers, handhelds, SDR rigs, and real‑world operating notes. You’ll find write‑ups on rigs like Curumim, sBitx, ZBitx, Baofeng UV‑5R Mini, uBITX experiences, and other commercial or homebrew radios, often with a strong “how it actually behaves on the bands” focus.
LinHT SDR: Open-Source Linux-Based Handheld Software Defined Radio for Amateur Enthusiasts
Software Defined Radio technology has revolutionized base station infrastructure, laboratory-grade receivers, and bench equipment for years, yet handheld transceivers have stubbornly clung to traditional fixed-function architectures. The LinHT SDR shatters this paradigm entirely, delivering a genuine software-defined transceiver in a genuinely portable package.
Building a Double Bazooka Antenna for HF and VHF Ham Bands
The double bazooka antenna, often described as a coaxial dipole, is a time-tested antenna design widely used by amateur radio operators. Its popularity comes from a combination of simple construction, predictable impedance behavior, and noticeably lower received noise compared to thin wire dipoles.
Microphone Pre-Compressor Circuit for SSB Transceivers
Clean, punchy audio is critical for effective SSB communication, especially when operating QRP or low-power HF transceivers. A microphone pre-compressor placed ahead of the transmitter’s audio input can significantly improve average modulation levels without introducing harsh distortion. The attached Microphone Pre-Compressor circuit is a practical, discrete-component design well suited for homebrew and experimental SSB rigs.
Housing the LARCSet: A Community-Designed 3D-Printed Enclosure
Ready to move your LARCSet off the workbench? Discover this community-driven 3D-printed enclosure project featuring STL files from Peter Marks and builds by VE3WMB.
ATS Mini Web Interface: Features, Setup & Browser-Based Radio Control
Explore ATS Mini, the ESP32-based DSP radio, and ats mini web interface . Learn features, spectrum analyzer, memory control, and setup guide.
Integrating JTDX with sBitX for Advanced FT8 Operation
Learn how to integrate JTDX with the sBITX SDR transceiver for reliable FT8 digital operation. Step-by-step setup, CAT configuration, and audio interface tips for amateur radio operators
Mini-Radio Firmware V3 Adds RTTY/CW Decoding and EiBi Integration
Mini Radio Firmware V3 enhances ATS-Mini DSP receivers with built-in RTTY and CW decoding plus EiBi schedule integration, enabling direct shortwave text decoding and smarter station tuning without external software.
sBitx v3: The Linux SDR That Refuses to Be Boring
Explore the sBitx v3 — an open-source Linux SDR transceiver merging computer and HF radio, enabling portable digital operation without a laptop
ZBitx: The Pocket SDR That’s Redefining Portable QRP
ZBITX is an ultra-portable 5 W all-band HF SDR transceiver with built-in FT8, CW, and digital modes powered by Raspberry Pi. Pocket-sized QRP radio for POTA/SOTA field operation without a laptop.