Accession Number:

AD0672070

Title:

SELECTED EXAMPLES OF VHF SIGNAL PROPAGATION RECORDS IN TROPICAL TERRAINS

Descriptive Note:

Special technical rept. no. 36

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CA

Personal Author(s):

• Shrauger, Nicholas K.
• Kreinberg, Edwin M.

Report Date:

1967-11-01

Pagination or Media Count:

42.0

Abstract:

Slow-speed chart records of received signal strength showing the perturbations caused by scattering from trees in the VHF band are presented. Data for several frequencies and polarization of transmitting and receiving antennas simple dipoles and standard ANPRC-25 manpack-set whips are included, as well as a variety of combinations of clearings, jungle terrain, rubber plantations, and bamboo. The records permit a qualitative evaluation of the magnitude of signal fading that is superimposed upon the smooth decrease of received signals with distnce between transmitter and receiver. Some similar results are presented for an ANPRC-25 manpack system using AT-271PRC antennas.

Descriptors:

• *RADIO TRANSMISSION
• ANTENNAS
• ATTENUATION
• EXPERIMENTAL DATA
• POLARIZATION
• RADIO SIGNALS
• RANGE(DISTANCE)
• SCATTERING
• SOUTHEAST ASIA
• TERRAIN
• TREES
• TROPICAL REGIONS
• VERY HIGH FREQUENCY
• WALKIE TALKIES

Subject Categories:

• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE