Amateur radio isn't just voice and Morse. In most countries if you want to build your own transmitters, especially in a private hobby capacity, you need an ama

Amateur radio isn't just voice and Morse. In most countries if you want to build your own transmitters, especially in a private hobby capacity, you need an amateur licence. HF at 3 - 30 MHz happens to be low freq. enough that a fast standard ADC and DAC can work as a direct conversion SDR. Surprised I don't see more projects around that yet.