Spiderbeam 160m Vertical Model 160-18-4WTH
15
160-18-4WTH Manual, Ver. 1.7 17-JULY-2021
2.8.1 Preparing the Top-Hat Wires
We will prepare the top-
hat wires “
two
at a time”:
(next page)
Grasp two of the top-hat wires about 15cm below one of their ends, such that the two
ends are the same length above your hand.
Keeping the wires parallel, tie a simple “Overhand Knot” in the
two wires, about 10cm
from their ends. Pull this knot as tight as you can.
Wearing gloves, grasp the two wires about 30cm
.
below the knot and wrap two turns of wires around
.
your hand, so that you can keep the wire from
.
slipping. Then using pliers pull the end of each wire
.
individually until the knot is as tight as you can get
.
it. See picture
→
→
→
→
→
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You should have about 10cm (4
”
) of wire extending
above the knot (
±
1cm
). Confirm.
Now prepare the other two top-hat wires exactly like you prepared these two.
Next you will connect an insulator to the other end of each wire:
Insert one end of one of these two DXW-UL top-hat wires through the hole in the end of
an insulator, exiting through the slot in the middle of the insulator.
Pull about 2.4m of wire through the hole and out the slot, then fold it back about 2.4m
such that the distance between the knot and the insulator is 12.5m.
Now
run the end of the wire through the hole a
.
second time and pull it tight.
Fold back the rest of the wire onto itself twisting
.
the excess wire several times around the longer
.
portion of the wire as you fold it back.
→
→
Measure the distance again between the knot and the insulator. It should be exactly
12.5m
. ***
THIS IS THE MOST CRITICAL MEASUREMENT OF THE ANTENNA. ***
Secure the twisted wires with two small black UV-resistant wire-ties, one near the
insulator and one near the end of the wire.
Now prepare the other top-hat wire exactly like the first pair.
Make sure the distance between the knot and insulators is the same on both wires.
This completes assembly of the first pair of top-hat wires for now.
Now prepare the 2
nd
pair of top-hat wires exactly as the first pair.
The final quality control is to hold all 4 wires in parallel and compare the distance
between the knot and the insulators.
Make sure they are all the same length.
