Sun Spots and Radio
aoe Maximum Every 11.4 Years po radio listeners ths question of sun spots is a very interesting subject. Researches and the analysis of astronomical records for the last 100 years have shown that the intensity of sun spots Waxes and wanes. The maximum is reached every 11,4 years, This peak
hus just been passed and the intensity of the sunspots will be on the decline for the next 534 years. In connection with the above, which is not advanced by astronomers as having direct bear. ing on radio reception. New Zealand radio listeners will recall how a few years ago, when sunspots were at their minimum, they had no. difficulty in tuning-in regularly to KGO (California) and other U.S.A. stations on a three-valve set. It was very likely due to the ineréase in the sunspots. thut from then on KGO gradually slipped beyond the capabilities of that re ceiver.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19300509.2.19
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Radio Record, Volume III, Issue 43, 9 May 1930, Page 5
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153Sun Spots and Radio Radio Record, Volume III, Issue 43, 9 May 1930, Page 5
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