COMMUNICATING BY LIGHT - Bluehaze
May 28, 2005 · A chronicle of modulated light tests in Australia, from 1968 to 1980. ... Stromberg- Carlson portable battery-valve broadcast band receiver c.1948 used ..... frequencies and are caused by sound energy reflected from the ends of the bulb. ... The elegant solution, suggested many years later by Rod Reynolds ...
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bluehaze's website is bluehaze.com.au