Download CTR2-Mini/Mini+ Firmware – v1.14.01
Download the latest CTR2-Mini firmware here. Just copy and paste to update your Wio.
Install a Sidetone Filter for iCW operation
If you need a pure sine wave sidetone for iCW operation checkout this modification.
Audio Controller
Audio I/O Module
FAQ
I/O Multiplexer
Mini+
New
Products
Radio I/O Module
SO2R Controller
CTR2-Mini – A Modular System Approach
CTR2-Mini is designed as a modular system where you choose the functions that are most important to you. Even better, your CTR2-Mini system can be easily expanded as your needs…
Original CTR2-Mini PCBs and Assembled Units
The original CTR2-Mini appeared in the September 2022 issue of QST. The Mini has since been upgraded to the Mini+ in order to provide additional functionality at a cheaper cost.…
CTR2-Mini Overview
CTR2-Mini is a smaller, less complicated, and cheaper alternative to CTR2
How to use this site
Learn how to use this site to quickly find the information you're looking for
Who am I and what is CTR2-Mini?
Learn a little about me, what this project is, and how it came to be.
CTR2-Mini Assembly Manual
On this page you can download the Mini's assembly manual or view the construction video.
Add a Function Keypad to CTR2-Mini
Easily add a custom function keypad to your CTR2-Mini