A number of experimental and broadcast pre World War II television systems were tested. The first ones were mechanical based (mechanical television) and of very low resolution, sometimes with no sound. Later TV systems were electronic (electronic television).
Contents
France
Germany
Netherlands
Poland
Switzerland
Italy
During the 1930s there were also experimental transmissions from the Vatican - but further details are unknown
Mechanical
Electronic
USSR
North America
References
Television systems before 1940 Wikipedia(Text) CC BY-SA