Accession Number:

AD0672069

Title:

THE USE OF GROUNDWAVE TRANSMISSION-LOSS AND INTELLIGIBILITY-TEST DATA TO PREDICT EFFECTIVE RANGE AND PERFORMANCE OF VHF MANPACK RADIOS IN FORESTS.

Descriptive Note:

Special technical rept. no. 11,

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s):

• Hagn,George H.

Report Date:

1966-09-01

Pagination or Media Count:

65.0

Abstract:

The effective range of a VHF manpack radio in a specified environment is a parameter of primary interest to the military user. There are several ways to define effective range. The purposes of this report are 1 to present a discussion of effective range that will lead to a useful and meaningful definition 2 to discuss the use of transmission-loss data with radio-set data and various performance criteria in regard to effective range and 3 to present some tentative conclusions about methods of planning for the use of VHF manpack radios in a tropical forest, based upon path-loss data taken in Panama during World War II and more recently in Thailand. A statistical definition of range with confidence bounds is proposed, based upon quality of operation, such as intelligibility scores. Supplementary information on intelligibility tests is given in Appendix A. Author

Descriptors:

• (*WALKIE TALKIES
• RANGE(DISTANCE))
• VERY HIGH FREQUENCY
• TRANSMITTER RECEIVERS
• PORTABLE EQUIPMENT
• TROPICAL REGIONS
• ATTENUATION
• RADIO WAVES
• INTELLIGIBILITY
• VOICE COMMUNICATIONS
• RADIO TRANSMISSION
• RADIOFREQUENCY POWER
• PREDICTIONS
• JUNGLES

Subject Categories:

• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE