11
010011
HEX
#8-32
2
NUT
41
011941
SPLIT LOCK
#8
2
WASHER
453
100453
TERMINAL
2
6
FIGURE I
Attach the boom to your mast as shown in Figure I. First attach the
mounting plate (130) to the BA section of the boom using U-bolts
(404), washers (119), nuts (118), and V-blocks (63). Attach the
mounting plate to the mast using the U-bolts (404), V-block (63),
washers(119) and nuts (118). Return to the tuning section on page
1 for final checkout and tuning procedure.
KEY P/N DISPLAY DESC SIZE QTY
63
170063
V-BLOCK
2"
4
(fits 404 U-Bolt)
(5.1 cm)
118
010118
HEX
5/16"
8
NUT
(.8 cm)
119
010119
LOCK
5/16"
8
WASHER
(.8 cm)
404
010404
U-BOLT
2-1/8 x 3"
4
(5.4 x 7.6 cm)
130
190130
MOUNTING
3/16" x 6" x 6"
1
PLATE
(.48 x 15.2 x 15.2 cm)
326
290326
DANGER
1
LABEL
#4 - RF CHOKE
A feedline should be prepared as shown in Figure H using the
solder terminals (453) provided. A 1:1 balun may be installed
at the feedpoint but it is not required. We recommend using
an RF choke made from 8 turns of RG8U coaxial cable with 6
inch (15.2 cm) diameter.
Important- Do not use foam dielectric
coax for your RF Choke because when the coax is wound in
a coil the center conductor may migrate away from the center
and detune your choke. Attach th RF choke to the driven
element using washers (41) and nuts (11) as shown in Figure
H. Be sure to tape and seal the feedline against water at the
point where the center dielectric and braid separate. Tape the
feedline, between the feedpoint and the RF choke to the boom.
Tape the RF choke to the mast. If you plan to install the antenna
in a salty or corrosive environment, you may want to consider
coating all elements with a clear marine varnish or its equivalent
after it is assembled.
#5 - BOOM TO MAST ASSEMBLY
KEY P/N DISPLAY DESC SIZE QTY
A4S
FIGURE H
BOOM
130
404
404
MAST
63
119
118
118
119
119
118
63
63
63
118
119
118 119
118
119
404
Electrical
Tape
Warning
:
Do not use foam
dielectic coax cable.
326
453
453
6"
(15.2 cm)
4"
(10.16 cm)
41
8 Turns
11
41
11
Electrical
Tape
