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Figure 1. TA1 is the transmission source. The radiation of the transmission is assumed to be omnidirectional. RA1 is the receiving antenna's position. The direct signal path SP1 is blocked by a mountain. The signal is not propagated through the mountain. Signal paths SP2 and SP3 are bounced or reflected signals from the hillsides which arrive at RA1 and are summed together at the receiving antenna. |