On the radio wave propagation characteristics in the forest environments (non LOS), some fairly reliable analytical and empirical propagation loss models available are based on the earlier laboratory experimental results, and not really on physi cal measurements in the real physical forest environments. Some of well known empirical radio wave propagation loss models for forest environment reviewed by previous authors are listed as follows [3], [4], [6], [8]: The Weissberger’s modified exponential decay model which is applicable, where a ray path is blocked by dense, dry, in-leaf trees found in temperate climates and where the propagation is likely to occur through a groove of trees rather than the canopy top is given as: