About VLSC Projects

The operator

VLSC Projects is built and maintained by BG1SB, an amateur radio operator. The call sign is the same one you'll see on the air and on GitHub (github.com/cheenle).

What started as a personal need — reliably controlling HF radios from another room, and eventually from another city — grew into a family of open-source projects that share one goal: make modern radio remote control something a HAM can run, read, and modify themselves.

The engineering style is practical and documented. Each major subsystem is captured in a Software Design Document (SDD), and the workflow follows a Forward-Deployed Engineering (FDE) methodology: build what actually gets used in the field, then formalize it. No proprietary black boxes, no "trust me" hardware.

Why VLSC exists

Commercial remote-control solutions for HF radios are often closed, expensive, and tied to one vendor's app. The radio hardware itself is capable of far more than most of it exposes. VLSC exists to answer three questions:

• Can we control a modern radio over the network without vendor dongles? — Yes: the FT-710 project reads the internal FT4222 SPI spectrum interface over a plain USB cable.
• Can an SDR like the SunSDR2 DX be served to any browser and to native apps? — Yes: SunMRRC + SunsdrMobile are a client-server pair built around WebSockets.
• Can an antenna tuner be cheap, autonomous, and network-driven? — Yes: the EFHW tuner is a ~430-CNY ESP32-S3 device that reads SWR over WebSocket.

The projects

Community & contact

All projects are open source under GPLv3/MIT. The best way to reach the project — report a bug, ask a question, or pitch an idea — is through the GitHub repositories. See the Contact page for the full list of ways to get in touch.