Solar Radio Interference as a Function of Frequency and Time Associated Ionosphere Disturbances

In the following study radio emissions from the sun are considered under the separate headings of 1) the quiet sun component, 2) the slowly varying component, and 3) the catastrophic component. An attempt is made to establish some statistics as to the percentage of time that the sun is likely to produce interference in radio communications at frequencies within the "atmospheric window" and an optimum working frequency range for use in space communications is deduced. An account is also given of the association between solar radio emissions and ionospheric disturbances.