Midlatitude measurements of L-band ionospheric scintillation with the ATS-5 spacecraft

Results are presented of L-band signal level measurements taken from the ATS-5 spacecraft operating in the narrow-band frequency translation mode. Weekly, monthly, and seasonal plots of the root-mean-square of the probability density function and the 90th percentile level of the probability distribution function of the received signal amplitude are given. Sample analog recordings of the signal are also presented along with the corresponding computer calculated statistics. Brief equipment descriptions are included along with a description of an automatic data collection platform which was used during some of the measurements.