Accession Number:

AD0912583

Title:

Validation of the Cosite Analysis Model (COSAM) for Selected VHF FM Equipments

Descriptive Note:

Technical rept.

Corporate Author:

IIT RESEARCH INST ANNAPOLIS MD

Personal Author(s):

Report Date:

1973-07-01

Pagination or Media Count:

191.0

Abstract:

Measurements were made of numerous interactions at a typical cosite installation results were compared with predictions made by the Cosite Analysis Model COSAM developed by the D0D Electromagnetic Compatibility Analysis Center ECAC. Tests involved six FM voice communications transceivers operating in the 30-76 MHz VHF range. Twenty-five frequency assignments were tested, with several desired signal levels. Types of interactions included adjacent signals, spurious responses, spurious emissions, receiver and transmitter intermodulation 2 and 3-signal mixes 2nd, 3rd, 5th and 7th orders. Results show that model accuracy is adequate for predicting the operational performance of collocated VHF-FM tactical communications equipment. Confidence levels are presented.

Subject Categories:

  • Radiofrequency Wave Propagation
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE