line-of-sight (LOS) propagation

line-of-sight (LOS) propagation: Of an electromagnetic wave, propagation in which the direct ray from the transmitter to the receiver is unobstructed, i.e., the transmission path is not established by or dependent upon reflection or diffraction. Note: The need for LOS propagation is most critical at VHF and higher frequencies.

This HTML version of FS-1037C was last generated on Fri Aug 23 00:22:38 MDT 1996