Speech processing

Most rigs of the modern era have speech compressors. Early radios did not, and it was vital to make sure your signal was "punchy". I well remember an article in an early VHF Communications magazine that looked at this.

See https://worldradiohistory.com/Archive-DX/VHF-Communications/VHF-COMM.1971.1.pdf .

From Pedro CT5JZX:

Here is a Portuguese project from CT4RK Carlos Mourato

High performance speech processor

https://www.youtube.com/watch?v=U9yQzhVrVro&feature=youtu.be

https://www.youtube.com/watch?v=YbmcP2mvTo0&list=UUZwp0BuDysKqLmJDJ7efNlg