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Abstract
This paper describes the propagation studies conducted by HRPU in Tropical Moist Deciduous Forest. The attenuation measurements were made in the frequency range of 50800 MHz and distances from 40 metres to 4 kms. Both horizontal and vertical polarisations were used. The results on the nature and magnitude of the attenuation caused by the presence of vegetation are presented. These results support the theory of lateral-wave mode of propagation of radiowaves in jungle environment. These result have been compared with those of sub-tropical pine forest.