Abstract
Some anomalous TV receptions in India on band I have been interpreted as being propagated viaF-layer artificially modified by high power broadcast transmitters. In this paper, the possibility of VHF communication by artificially modifiedE-layer is discussed. The presented theoretical analysis shows that high-power broadcast trasmitters can produce substantial changes in temperature and ionisation in theE-layer. The rate of energy transfer from the wave to the medium particles has also been computed. Model calculations are made for a transmitter located near Calcutta. The possibility of the extra-ionisation producing field-aligned structures to support VHF communication is discussed.
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De, S.S., Adhikari, S.K., Bandyopadhyay, J. et al. Artificial modification of ionosphericE-layer by high power radio transmitters. PAGEOPH 132, 803–810 (1990). https://doi.org/10.1007/BF00876821
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DOI: https://doi.org/10.1007/BF00876821