A small expandable radio controller
Have multiple antennas? Check out the CTR2-Mini integrated Antenna Switch Controller
Find the Antenna Switch Controller BOM, schematic, and build instructions here
CTR2-Mini is a smaller, less complicated, and cheaper alternative to CTR2
The CTR2-Mini SO2R Controller makes it easy to implement SO2R with CTR2-Mini.
Do you think SO2R is for contesters only? Think again!
Learn how to use this site to quickly find the information you're looking for
CTR2-Mini was designed to be a simple, small radio controller that anybody could easily build and deploy in their station. It’s also designed to be a building block that allows…
Learn a little about me, what this project is, and how it came to be.
On this page you can download the Mini's assembly manual or view the construction video.
You'll find the schematic diagrams for CTR2-Mini on this page.