CALCULATION OF MAXIMUM APPLICABLE FREQUENCIES FOR COMMUNICATION BETWEEN TWO POINTS BY A DIGITAL COMPUTER,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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Methods are given for calculation of the highest and lowest working frequencies that will insure stable radio communication on a given radio link. A digital computer is used for calculating the frequencies. The algorithm is given on which the computer program is based and that is used to compute the maximum frequency applicable for radio links by use of the E, F1, and F2 reflecting layers of the ionosphere. Calculations of the highest working frequency by digital computer were in reasonable agreement with those obtained from the monthly prognosis of radio wave propagation.