If the antenna is to be mounted between 35 and 55 feet above ground, use Line 1. Typical 2:1
VSWR bandwidth at these heights is 200 kHz. with a minimum VSWR less than 1.2.
If the antenna is to be mounted between 60 and 80 feet above ground, use Line 2. Typical 2:1
VSWR bandwidth at these heights is 150 kHz with a minimum VSWR less than 1.6.
For antenna heights above 80 feet, use Line 2. Antenna heights less than 35 feet are not
recommended.
•
Figure 3
Assembly of the QK-710 for 10
MHz Operation
Remove the DE-3 (7/16" x 37") and the 1/2"
compression clamps (older system) or the #6
tubing clamp (new system) from the Explorer
14 driven element. Adjust the DE-2 to 37 1/2"
and slide the 15 meter trap all the way into
the DE-2.
Retighten these two clamps securely on both
sides of the antenna. Loosen the sleeve-spacer
insulators and the sleeve boom-to-element
brackets and adjust the spacing of the sleeves
to 7 inches.
