Radio propagation at 27-40 GHz

A test program has been carried out in the greater Washington, D. C., area to investigate the feasibility of wide-band transmission at millimeter wavelengths. Measurements were made between July, 1967, and February, 1968, over an 8-km path and between March and August, 1968, over a 32-km path. Experimental determinations of the parameters significant in the design and assessment of the capability of communications systems propagating in the 27-40-GHz frequency band were made. A description of the program, summary of the radio and meteorological data, and conclusions relevant to the transmission over both paths, are presented.