Accession Number : AD0861902

Title :   Spectrum Occupancy in the HF Band.

Descriptive Note : Research and Development rept. Jun-Sep 68,

Corporate Author : NAVAL ELECTRONICS LAB CENTER SAN DIEGO CALIF

Personal Author(s) : Castro,C. R.

Report Date : 20 AUG 1969

Pagination or Media Count : 17

Abstract : Measurements made in support of submarine-communication systems development indicate crowding of the hf spectrum in California comparable to crowding previously observed in the British Isles. It is shown that other-user interference has over-shadowed atmospheric noise as a design factor. Amount of other-user interference is shown to be dependent upon antenna characteristics. Apparent spectrum occupancy can increase significantly when a vertical monopole is substituted for a corner reflector antenna which has a nominal 90 degrees main lobe and is of the same polarization. (Author)

Descriptors :   (*RADIO TRANSMISSION, HIGH FREQUENCY), (*COMMUNICATION AND RADIO SYSTEMS, SUBMARINES), STATISTICAL ANALYSIS, RADIOFREQUENCY INTERFERENCE

Subject Categories : Submarine Engineering
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE