NOTE: If 50 ohm coaxial cable is used to feed
the antenna, select the supplied balun at this
time.
Use the # 10-24 x 21/2" bolt (Item No. 17) to
fasten the element-to-boom insulator to the
boom. Refer to Figure 5, Detail B.
Use the two (2) #10-24 x 1 1/4" bolts (Item No.
19) to assemble the Driven Element as shown in
Figure 5, Detail B. Pay particular attention to
the connections of the beta rod, balun and
feedline.
Use the #10 x 3/8" screw (Item No. 20) to
fasten the beta rod shorting clip over the beta
rod, as shown in Figure 5, Detail B.
Select the following rods: D1 (36 7/8" long)
(Item No. 7), D2 (35 3/4" long) (Item No. 8)
and D3 (35 3/8" long) (Item No.9). Mark the
center point on each rod, then make two more
marks 5/8" on either side of the center mark.
Secure the elements to the boom as shown in
Figure 1 and Figure 5, Detail A. Be sure they
are oriented as shown.
Waterproof the connection with neoprene,
Krylon, or some similar substance.
Install caplugs on the ends of the boom and the
Driven Element.
PARTS LIST
Slip the two (2) U-bolts into the boom-to-mast
bracket and fasten it to the mast securely. Tape
the coax feedline to the boom and to the mast.
Be sure to insulate any connections from the
boom or the mast. This completes your
installation.
Item
No.
Part No.
1
170386
2
175157
3
160040
4
385142-
5
385144-
6
160036
7
160016
8
160019
9
160021
10
871704
11
465420
872073-
12
16326
13
45563
14
47563
15
54006
16
50526
17
50016
18
54006
19
50015
20
51067
21
55574
22
55407
23
55409
24
56479
25
56569
26
56296
27
17037
Description Qty
Tube, Boom, aluminum, 1 1/4" x 75".................................1
Tube, Driven Element, aluminum, 7/16" x 17 1/4"...............2
Beta Rod, 3" ........................................................................1
Clamp, Boom-to-Mast...........................................................1
Backup Plate, Boom-to-Mast ................................................1
Tube, R1, aluminum, 3/16" x 39 5/8"......................................1
Tube, D1, aluminum, 3/16" x 36 7/8"....................................1
Tube, D2, aluminum, 3/16" x 35 3/4"........................................1
Tube, D3, aluminum, 3/16" x 35 3/8"........................................ l
Balun Assembly .......................................................................1
Insulator (Driven Element-to-Boom) ....................................1
Parts Pack 2058-1, Stainless Steel........................................... l
Beta Clip....................................................................................1
Caplug, 11/4 " ...........................................................................2
Caplug, 7/16" .........................................................................2
U-Bolt, 5/16"-18 x 3 5/8" ..........................................................2
Bolt, hex head, 1/4"-20 x 3/4"................................................. 4
Bolt, hex head, #10-24 x 2 1/2".............................................1
Eyebolt, 5/16", #10-24 x 11/2 ".............................................4
Bolt, hex head, # 10-24 x 1 1/2"............................................2
Screw, pan head, Type A, #10 x 3/8" ...................................1
Nut, hex, 5/16"-18 ....................................................................4
Nut, hex, #10-24 ...................................................................11
Nut, hex, 1/4"-20 ......................................................................4
Lockwasher, split, 5/16" ..........................................................4
Lockwasher, internal, #10 ..................................................12
Lockwasher, internal, 1/4......................................................5
Half Washer, aluminum .....................…....................................4
