Table of Contents
Research Letters in Physics
Volume 2009, Article ID 216373, 4 pages
Research Letter

Waveguide Parameters of 19.8 kHz Signal Propagating over a Long Path

School of Engineering and Physics, The University of the South Pacific, Private Mail Bag, Suva, Fiji

Received 15 April 2009; Accepted 21 June 2009

Academic Editor: Faramarz Farahi

Copyright © 2009 Sushil Kumar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The amplitude and phase of 19.8 kHz signal from navigational transmitter located in North West Cape, Australia, recorded at Suva, Fiji, have been utilized to determine the waveguide mode parameters. The propagation path is mixed over land and sea having Transmitter-Receiver Great Circle Path distance 6.7 Mm. The experimental values of the parameters were found to be consistent with the theoretical values calculated using the mode theory of VLF wave propagation in the waveguide.