March 1969 | NTIA Technical Memo ERL TM ITS 164

Progress report to Depart­ment of Defense Contract No. 68 LYN/PR-77235

Margo Leftin; Rudolph G. Peterson

Abstract: The results of three research projects for the period January 1968 through December 1968 are reviewed. The first was to develop a program (ALLMODES) that presents circuit data for the 7 most probable ionospheric sky-wave transmission modes. The second was to provide a program (QUILT) to display the parameters of HF propagation at a grid of 323 points to show trends in any direction from a transmitter or receiver location. The third was an attempt to provide short-term predictions for the European-Near East area, similar to the predictions for the Southeast Asia area. Progress was made in securing the required data, but the work was discontinued when funds were exhausted.

Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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