Abstract
THE phenomenon recently reported by Tellegen1 whereby the new broadcasting station at Luxembourg appears to interact with that portion of the carrier wave of the Beromunster station which is received in Holland, can be explained by taking into account the effect of such a powerful station (200 kw. and γ= 1190 m.) on the mean velocity of agitation (u) of the electrons in the ionosphere. Any change in v will produce a change in u, the frequency of collision of an electron with molecules, and hence a change in the absorbing power of that part of the ionosphere in the vicinity of the station. Since this change depends on the magnitude of the electric vector in the disturbing wave, it follows that the absorbing power of this part of the ionosphere will vary in accordance with the modulation frequency of the station, and so the modulation will be impressed in part on any other carrier wave which may traverse this region.
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References
NATURE, 131, 840, June 10, 1933.
Proc. Roy. Soc., A. 88, 336 ; 1913.
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BAILEY, V., MARTYN, D. Interaction of Radio Waves. Nature 133, 218 (1934). https://doi.org/10.1038/133218a0
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DOI: https://doi.org/10.1038/133218a0
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