Start Here - KR4BAD Amateur Operator

This site documents the real-world build of an HF radio system—from concept to working hardware.

No kits. No shortcuts. Just design, testing, failure, and progress.

Table of Contents

Choose Your Path

See the Freedom7 project come together step by step, including design decisions, working hardware, and ongoing progress.

Understand key RF concepts as they are applied in real builds—not just theory, but what actually matters on the bench.

Practical guides, fixes, and lessons learned while troubleshooting real systems.

Observations, ideas, experiments, and lessons discovered along the way.

I’m building an HF SSB transceiver from scratch—modular, testable, and fully understood.

This is not a finished product. It’s a working system evolving in real time.

Current focus:

I’m not trying to build a company.

I’m trying to build something worth building.

And document it honestly so others can learn, follow, or apply it to their own work.

If you’re interested in real RF design—not just operating or buying—follow along.