Abstract
OBSERVATIONS of whistler-mode signals from v.l.f. communications transmitters have been used1,2 to study the magnetosphere in a way similar to the use of naturally occurring whistlers from lightning. Existing naval communications transmitters provide high radiated power (up to 1 MW) but are restricted to transmission at allocated frequencies mostly above about 15 kHz, are not well located geographically for this work and are not often available to transmit special programmes.
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References
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Helliwell, R. A., Whistlers and Related Ionospheric Phenomena (Stanford University Press, 1965).
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MCPHERSON, D., KOONS, H., DAZEY, M. et al. Alaska to New Zealand whistler-mode transmission at 6.8 kHz. Nature 248, 493 (1974). https://doi.org/10.1038/248493a0
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DOI: https://doi.org/10.1038/248493a0
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