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The data t~bulated herein are. hourly median values of system loss for ionospheric scatter propagatIOn and for sporadlc-E propagation. I n addition t he duration of each occurrence of sporadic-E propagation is indicated. The following data are included: Ionospheric Scatter Propagation Cedar Ra pid to Sterling 27.775 Mc/s, Apr!11954 through J anuary 1955, May 1955 through F ebruary 1956. 49.800 Mc/s, ApI'll 1951 t hrough June 1958. 107.800 Mc/s, J anuary 1952 through J anuary 1953. Anchorage to Barrow 48.870 Mc/s, September 1951 t hrough June 1953. Fargo to Churchill 49.700 Mc/s, September 1951 t hrough March 1953. Sporadic-E Propagation Cedar Rapids to Sterling 49.800 Mc/s, April ] 951 t hrough June 1958. The experimental techniques used are briefly described and the accuracy of the results is discussed.

VHF radio propagation data for the Cedar Rapids-Sterling, Anchorage-Barrow, and Fargo-Churchill test paths, April 1951 through June 1958