By Brian Justin, WA1ZMS
wa1zms@arrl.net
The early history of wireless contains the names of many great pioneers. While Marconi’s name is the most well known, the names of Fessenden and Heising are only rarely mentioned. As early as 1900, Reginald Fessenden was experimenting with the direct transmission of human speech. During World War I, Raymond Heising was developing a method of constant-curren...
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wa1zms@arrl.net
The early history of wireless contains the names of many great pioneers. While Marconi’s name is the most well known, the names of Fessenden and Heising are only rarely mentioned. As early as 1900, Reginald Fessenden was experimenting with the direct transmission of human speech. During World War I, Raymond Heising was developing a method of constant-curren...
More...