Spiderbeam 160m Vertical Model 160-18-4WTH
30
160-18-4WTH Manual, Ver. 1.7 17-JULY-2021
While holding the Polyester
cover in place, cut off about 2.5cm (1”) o
f yellow Kevlar
protruding from the Polyester. Use a very sharp razor blade knife for this.
While holding the rope with one hand about 10cm from its end, pull the end of the
Polyester cover back out with the other hand, stretching it as far as you can. It will
return to its original length.
Please wear protective leather gloves for the next two steps
!
CAUTION: HOT
Using a cigarette lighter or a match, heat the end of the Polyester until it to catches fire.
Allow to burn for about 1 second and blow out the flame. Do not let it burn to the point
where the Kevlar core starts. Then
QUICKLY
perform the next step.
Round out the melted “bulb” of
Polyester by slightly stretching it with your fingers.
o
Tip: if not wearing gloves, it helps to lick your fingers before doing this.
.
(helps prevent burning)
Trim off any long thin strings of Dacron that may be created.
When completed, it should look like this:
5.3
APPENDIX C: Knots
The Spiderbeam vertical antenna is built using specific knots. For each task requiring a knot, we
have selected the knot which we believe is best suited for the job.
We STRONGLY recommend using the type of knot we specify in each instruction.
The 4 knots used for thi
s antenna are the “Bowline”, “Overhand”, “Sheet Bend” and “Sq
uare
Knot”. The Squ
are Knot is also
known as the “Reef Knot’’.
If you were lucky enough to be a Boy Scout in your youth, you should already be familiar with
these knots.
Otherwise “Google is your friend”. There are several
good sites showing exactly
how to tie these knots.
We suggest you practice these knots before beginning the antenna construction.