An evaluation of short-term ionospheric forecasts for selected Ssoutheast Asia DCA trunks
By: Roger K. Salaman
Contributors: Institute for Telecommunication Sciences; United States. Environmental Science Services Administration
Series: ESSA technical report ERL -- 96 -- 71
Publisher: Institute for Telecommunication Sciences
Published: 1969
Place of publication: Boulder, Colo
Language: eng
Number of pages: 72
Subjects: Ionospheric forecasting; Ionospheric radio wave propagation; Maximum usable frequency
Description: Special short-term, HF, MUF predictions for selected trunks in Southeast Asia were evaluated in the fall of 1966. The evaluation illustrated the problem of predicting the MUF over a short, north-south path in the equatorial latitudes where variations in the MUF up to 8 MHz within a period of several hours are not uncommon. The opportunity to observe HF operations in a military environment led to many interesting conclusions, including the fact that the word propagation is often used interchangeably with outage. Automatic system monitoring and more readily accessible knowledge of propagation effects would assist in minimizing the trunk outages.
Notes: "January 1969."

Includes bibliographical references.