ID
Part #
Description
Dimensions
Qty
82 010082
Hex
1/4-20 x 1”
28
Bolt
(.6 x 2.5 cm)
84 010084
SS Lock
1/4”
39
Washer
(.6 cm)
85 010085
SS Nut
1/4-20
15
(.6 cm)
99 014399
SS Lock
1/4”
39
Nut
(.6 cm)
504 324504
Aluminum
3” x 5-1/4” x 1/8”
6
Bracket
(7.6 x 13.3 x .3 cm)
509 324509
Aluminum
4” x 5-1/4 x 3/16”
8
Bracket
(10.2 x 13.3 x .5 cm)
564 324564
Aluminum
1” x 5-1/4” x 1/8”
2
Bracket
(2.5 x 13.3 x .3 cm)
588 014588
SS Hex
1/4” x 3-1/2”
9
Bolt
(.6 x 10.2 cm)
592 014592
SS Flat
1/4” (1/8” thick)
6
Washer
(.6 x .3 cm)
BA
BB
BC
BD
BE
3-3/4”
(9.52 cm)
1-1/4”
(3.17 cm)
16-3/4”
(42.5 cm)
4-3/4”
(29.8 cm)
4”
(10.2 cm)
11-3/4”
(29.8 cm)
4-3/4”
(29.8 cm)
4-3/4”
(29.8 cm)
1-1/4”
(3.2 cm)
3-3/4”
(9.52 cm)
72”
(182.9 cm)
60”
(152.4 cm)
12”
(30.5 cm)
24”
(61.0 cm)
84”
(213.4 cm)
26
26
Figure 1
See Figure 4A
216”
(5.5 m)
Figure 3
Element #3
BA
BC
BE
See Figure 4A
Element #6
Tuning Tube
Support
Insulator
Figure 4
Element
#1
Element
#2
Element
#3
Element
#4
Element
#5
Element
#6
Element
#7
See
Fig. 4B
See
Fig. 4C
See
Fig. 4A
See
Fig. 4C
See
Fig. 4C
See
Fig. 4A
See
Fig. 4B
53”
(134.6 cm)
NOTE: The X7 is shipped with NOALOX® conductive lubricant and an applicator brush. Apply small amounts
of the lubricant to telescoping tubing sections during element and boom assembly. Apply small amounts of
lubricant to bolt/U-bolt threads to prevent galling (seizing) of the nuts during assembly. Also, apply small
amounts to the feedstrap assembly and matching network connections.
BA
BB
BE
BC
BD
Figure 2
Figures 1, 2, 3 and 4 show the steps for boom assembly. Identify the tubing
sections, element brackets and hardware required for this step by using the
Boom Subassembly Parts List. Note the element brackets for Elements #3 and
#6 join the boom sections (Figure 3).
Refer to Figures 4A, 4B, 4C and 4D to assemble element brackets. The
1/4” hex nuts (85) are used as spacers on all brackets. Tighten these nuts in
place before assembling element bracket halves. The 1/4” flat washers (1/8”
thick) (529) are only used on 1/8” thick brackets as spacers (Figure 4C). The
Boom may be placed on a flat surface with all brackets laying flat on the surface.
This will allow all brackets to be fastened in line with each other. When tightening
the hardware, refer to Figure 4A and tighten all bracket hardware in this order.
When tightening the last two nuts on (509) brackets, do not completely compress
the element brackets together. Leave a 1/8” (.12 cm) gap between the brackets.
Do not tighten the bolts on the Tuning Tube Support Insulator Bracket (Figure
4D). Allow the bracket to remain loose on the boom for Step 5 (Feed System
Assembly).
Nylon insert lock nuts are designed for one-time use. Do not tighten these
nuts if you expect to disassemble antenna sections during antenna mounting.
After mounting boom end caps (26), drill a small hole (1/4”) in the bottom
edge of the cap for water drainage. Determine which edge of the end cap will
be on the ground facing side of the boom when antenna is mounted in its final
position.
2-Boom Assembly
Mounting hole
for optional 40M
add-on kit.
