SteppIR Antennas - 4 Element
21
Prepare the Fiberglass Element Support Tubes (standard poles)
Note: If you have ordered the optional 40m - 30m Dipole Kit you need to refer to the section on
preparing the poles (ESTs) in that specific manual. The 4 special poles for this option
have some differences from the standard poles.
Locate:
Dark green fiberglass telescoping poles (
Figure 20
)
*
Eight black rubber boots with clamps
Your tape measure
The green fiberglass poles are all assembled in the same manner, and when
extended, become element support tubes (ESTs) for the flat strip copper beryllium elements
themselves. The copper-beryllium strips are shipped retracted inside their respective element housing
units (EHUs).
Repeat the following procedure for each telescoping pole
Telescope a pole to full length by pulling each section out
firmly
in a twisting motion until it is ex-
tended as far as possible.
Each segment is tapered and should lock securely in place when fully
extended.
Pole lengths may vary but, when fully extended, each pole must be at least
17 feet 8
inches
in length as measured from the butt end of the pole to the tip (
Figure 20
).
Verify the length
for each pole before installation or heating the joints.
If a pole comes up a little short (1/2” to 1”) try collapsing the pole and starting over, this time aggres-
sively “jerk” each section out instead of twisting. The pole cannot be damaged and you may gain a
minimum of 1/2” or more. If you have trouble collapsing the pole try carefully striking one end on a
piece of wood or other similar surface placed on the ground.
Figure 20
17’ 8” min
Rubber Boots
Summary of Contents for 4 Element Yagi
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Page 14: ...SteppIR Antennas 4 Element 14 CONNECTING THE CONTROL CABLE TO THE D25 SPLICE ...
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