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Vertical Isolation Calculator


Frequency: MHz (Frequency to test)
Distance:    vertical separation



Note: The values indicated above are approximate because of coupling which exists between the antenna and tower transmission line. Data is based on the use of half-wave dipole antennas. The data also provides acceptable results for gain type antennas if (1) the spacing is measured between the physical center of the antennas and if (2) one antenna is mounted directly above the other, with no horizontal offset (exactly collinear). No correction factor is required for the antenna gains.
Valid for I(dB) <= 70 dB max