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Spectrum Engineering

NOTE: These reports are available either on-line in PDF (portable document) format or only as hard-copy. If you would like a copy of a report that is not available electronically, please make note of the document number and submit your request to:

NTIA Office of Spectrum Management
System Engineering and Analysis Division
Tel. (202) 482-2608
Fax (202) 482-4595
e-mail edrocella@ntia.doc.gov

Related content


A Survey of Microwave Fading Mechanisms Remedies and Applications

Report ID
ERL 69-WPL 4
March 01, 1969
H. T. Dougherty
Abstract

After a brief description of the significance of the radio refractive index and its variation in the lower troposphere, a catalog of fading mechanisms is presented. Attention is directed to the supporting refractive index structure, the characteristics of the fading signal, and the available remedies. The phenomena of multipath fading are described, and the theoretical amplitude distributions are presented. Diversity reception (frequency or space) is outlined for reducing the fading due to multipath. Specific expressions are given for determining the frequency or space separations. Successful remedies for microwave fading that are keyed to specific fading mechanisms also constitute a means of measuring the characteristics of the prevailing meteorological conditions. Specific expressions are given to accomplish this for the multipath and diffraction fading mechanisms.

Tabulations of Propagation Data Over Irregular Terrain in the 230-to 9200-MHz Frequency Range Part II: Fritz Peak Receiver Site

Report ID
ERL 65-ITS 58-2
December 01, 1968
P. L. McQuate, J. M. Harman, M. E. Johnson, A. P. Barsis
Abstract

This is the second part of a four-part report containing tabulations and graphs of transmission loss data resulting from propagation experiments in the 230 to 9200 MHz frequency range conducted over irregular terrain in Colorado. This part describes data obtained at a single common receiver site at Fritz Peak, Colorado, over propagation paths varying in length from 3.0 to 120 km.

Tabulations of Propagation Data Over Irregular Terrain in the 230 to 9200 MHz Frequency Range Part III: North Table Mountain-Golden

Report ID
ESSA Technical Report ERL 65-ITS 58-3
July 01, 1970
P. L. McQuate, J. M. Harman, M. E. McClanahan, A. P. Barsis
Abstract

This is the third part of a four-part report containing tabulations and graphs of transmission loss data resulting from propagation experiments in the 230- to 9200- MHz frequency range conducted over irregular terrain in Colorado. This part describes data obtained at a common receiver site, which is located on a high mesa near Golden, Colorado, over propagation paths varying in length from 0.5 to 80 km.

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