Comparative Analysis of the Two Ray Field Strength on Radio Mobile ITM Model and Recommendation ITU-R P.1546

This document represents the continuity of a research series on the behavior of radio propagation by the Irregular Terrain Model (ITM) from National Telecommunications Institute (NTI – USA), under certain operation conditions known as the 2-Ray mode on Line of Sight links (LOS). The research has been conducted on 24 links under several LOS conditions and terrain data. Then compared with ITU's (International Telecommunications Union) P.1546 and conclusions have been extracted and procedures recommended. Future work will include further research with new terrain data available from NASA.