The Stuff of Genius - Long-Range Radio
Before Ernst Alexanderson designed the high-frequency alternators that transmitted radio broadcasts in a continuous wave, radio was not usable ...
SAQ Grimeton at 17.2kHz 2010-10-24
. It was built for wireless telegraphy using techniques developed by the Swedish-American Ernst Alexanderson. www.grimetonradio.org ... SAQ VLF 17 ...