First scanners were built in the 1950s to map probe signal variations in front of microwave antennas.
12.
With a conventional microwave antenna, the reception efficiency is better, but its cost and complexity are also considerably greater.
13.
A microwave antenna from the army base would work, but Professor Farnsworth warns that using it could change history.
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The broadcaster suspects one of the microwave antennas used to relay the broadcast shifted slightly, cutting off the audio signal.
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A microwave antenna may also be fed directly from a waveguide in place of a ( conductive ) transmission line.
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In point-to-point microwave antennas, a " high performance " antenna usually has a higher front to back ratio than other antennas.
17.
It has intact facilities that are in disrepair and some still in place are used as radio transmission & microwave antenna stations.
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The view from the observation tower toward the Observatory and its forest of radio, TV, and microwave antennas, is obscured by trees.
19.
The beam of a microwave antenna is IR radar ( laser ) is non dispersive, the radar footprint is therefore independent of range.
20.
In the late 1980s, Sprint had placed microwave antennas atop the 380, 000-square-foot building, attracting communications concerns as tenants . ( MORE ) nn
