Dipole Installation
Attach antenna housing to a 1-3/4” mast (not included) using the 1-3/4” U-bolts and saddles.
(Figure 23, 35, 26 and 27)
Dipole SWR Considerations
The impedance of a half wave horizontal dipole depends on it’s height above ground. In the frequency
range of 14 to 28 MHz, the typical height of an amateur radio antenna is between 1/2 and 1 wavelength
above ground. At these heights the impedance of a horizontal 1/2 wave dipole is in the vicinity of 70
to 80 ohms. When the antenna is mounted at heights greater than 1/2 wavelength, it should exhibit an
SWR of less than 1.5 to one. At lower heights, the SWR may be higher.
SteppIR Antennas - Dipole
12
Figure 25
Figure 23
Figure 27
Figure 26
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