SteppIR 4 Element Yagi, Инструкция по эксплуатации

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Install the Boom Truss Support Assembly
Locate the sixteen 3/16” galvanized cable clips, four 3/16” galvanized thimbles, two 1/4” x 4” galva-
nized turnbuckles and the 26 feet of 1/8” non-conductive Phillystran® Kevlar™ cable.
Using a hammer, lightly tap the thimbles so that the center opening is forced onto the eye bolt at the end
of the boom (
Figure 33 ). Press the thimble back together as close as possible once it is through the
eyebolt. Thread the Phillystran through the eyebolt, so that it rests on the channel of the thimble. You
will use approximately 12” of Phillystran to loop through the eyebolt (six inches down, six inches back)
as shown in
Figure 34 .
Figure 33
Figure 34
SteppIR Antennas - 4 Element 26
DO NOT CUT THE PHILLYSTRAN CABLE UNTIL YOU HAVE INSTALLED
ONE SIDE OF THE TRUSS—
THE MEASUREMENTS FOR EACH SIDE ARE NOT EQUAL IN LENGTH.
Note: Verify that the long element measures 110.5” and the short element measures 104.5”.
Securely fasten the pieces together with the 6-32x3/4” machine screws and Nylok nuts and install the U-
bolt on the center bracket as shown in
Picture 32.5.
The 6M passive elements should be mounted on the top side of the boom, the same as the other elements,
using the U-bolts and saddles shown in (
Picture 32 ). Using a tape measure, determine the correct pas-
sive element placement as shown in Drawing 7 . Be sure to measure from the actual center line of the 6m
passive element, NOT from where the U-bolt attaches ( Picture 32.5 ). Make sure the elements are
aligned with the green fiberglass poles. Tighten securely.
Warning: When attaching the 6m passive to the boom be careful not to trap the element control cable
under the U-bolts.
Picture 32
Picture 32.5
Picture 31