Solar Influences on HF Absorption and the Resulting Hawaii to California Lowest Observed Frequency.
Technical publication Oct 69-Jan 70,
NAVAL WEAPONS CENTER CHINA LAKE CA
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The theory of the absorption of high frequency HF radio waves is presented and used to determine the expected lowest observed frequency LOF. Next, experimental LOFs obtained with an HF oblique incidence sounder receiver on the Hawaii-California propagation path are presented and compared with the absorption theory. The LOFs are also compared with the CNO predictions. The conclusions are that the LOF is not influenced appreciably by a varying component of background solar radiation, or seasonal changes, and that the LOF is a predictable quantity which closely follows the theory. Author
- Radiofrequency Wave Propagation