About the Project

Morse 73 is an independent project developed by Gregório de Castilhos, an electronic engineer in Brazil and enthusiast of radio and Morse code, bringing together software, hardware and communication in a single platform.


The goal of the project is to preserve and encourage the use of Morse code through technical, practical and intuitive tools for CW operators and students.

From Anywhere to Everywhere

More than software, Morse 73 aims to connect people through Morse code communication, bringing together tradition, technology and learning in a single platform.

About Morse 73

Morse 73 was created to make Morse code learning and communication more efficient, practical and engaging.


By integrating dedicated software and hardware, the project offers a technical and intuitive experience for both beginners and experienced CW operators.

A Realistic Operating Experience

Unlike tools focused only on text or automatic playback, Morse 73 was designed to provide an experience closer to real telegraph operation.


The platform combines auditory training, motor coordination, real-time communication and integration with physical telegraph devices.

Intuitive and Progressive Learning

The system includes different training modes focused on the natural development of auditory perception, speed and accuracy in Morse code.


Interactive exercises, real-time metrics and customization tools allow each operator to adapt the experience to their own level.

Real-Time CW Communication

Morse 73 also includes a Morse code communication environment with multiple chat rooms.


The goal is to recreate the feeling of interaction between radio operators, allowing real-time conversations between enthusiasts from different places around the world.

Hardware Integrated with Software

The Morse 73 ecosystem includes devices specifically designed for integration with the platform.


The Nexus Morse Key offers traditional operation and USB connectivity, while the Nexus Morse Adapter allows conventional telegraph keys to be connected directly to the computer.