Radio Teletype Machines and Modems

Here a description of work on mechanical teletype machines and RTTY demodulators of yesteryear is to be found.

 

Audio Amplifiers and Processors

This section has been moved to "Audio Projects: Amateur and Home Entertainment".

 

(Active) Antennas

The main interest here is active antennas for limited space applications. Only one project is covered so far.

 

Controllers and Power Supplies

This is a place to list projects that may be of use in different sets to provide power or control temperature or other parameters.