NOTE: THESE ANTENNAS CAN BE CONVERTED TO A CANTILEVER MOUNT BY APPLYING A “WC” CANTILEVER MOUNTING KIT
TABLE 1
ANTENNA ELEMENT LENGTH (in inches)
ELEMENT J55-2
J55-3
J55-4
J55-5
J55-6 J55-FM
1
110
100.5
89
77
70
65
2
100.5
91
81.5
70.5
65.5
58.5
3
92
85
76.5
66.5
62
50
4 & 5
85
81
73
63
60
48.5
SPACE
A
25.5
24.5
28
24
21.25
21.5
B
15.75
15.25
16
12
12
6.75
C
11.5
9
8.5
8
7
12.25
D
39.5
30
25.5
26
20.75
28.5
ANTENNA ELEMENT SPACING (in inches)
TABLE 2
ANTENNA ELEMENT LENGTH (in inches)
ELEMENT
J105-7
J105-8
J105-9 J105-10 J105-11 J105-12 J105-13
1
33.5
32.5
31.25
30.5
30
28.5
27
2
30.5
29.5
29.5
28
27.25
26.375
25.375
3
27.625
27
26
25.5
25.375
23.25
23
4 - 10
26
24.5
24.25
23.875
22.75
22.25
21.5
SPACE
A
8.75
11
11
9.25
8.875
9.5
11
B
10.5
9.25
9.25
6.875
9.75
9.75
9.375
C
7.5
7
7
7.5
7.125
5.625
6.5
D
8.5
10.5
10.5
10
9.625
9.75
8
E
11
10.5
10.5
10
9.625
8.5
8
ANTENNA ELEMENT SPACING (in inches)
2. Loosely assemble the dual "U" bolt mounting bracket onto the crossarm as shown in Figure 3.
3. Lift the antenna into position, hold it upright and slide its "U" bolt assembly onto the mast.
4. Orient the antenna in the desired direction, then tighten the hex nuts on the "U" bolts sufficiently for
supporting the antenna.
Description
The J-series Yagi antennas are heavy duty 75-ohm or 50-ohm antennas, for MATV and CATV applications.
Assembly and Mounting
1. Consult Figure 1 or 2 and Table 1 or 2, then assemble the elements onto the crossarm in their proper
positions as denoted by their length. Note that the back of the crossarm is the end with the orange
plastic plugs. DO NOT overtighten the hex-bolts securing the elements.
FIGURE 1 TYPICAL MOUNTING OF MODEL J55-*-WC
FIGURE 2 TYPICAL MOUNTING OF MODEL J105-*-WC
1
2
3
4
5
A
B
C
D
B
A
10
9
8
7
6
5
4
3
2
1
E
D
C
E
E
E
E
FIGURE 3 TYPICAL MOUNTING
OF MODEL J55 AND J105
ELEMENT STIFFENER
FIGURE 3A DIRECTOR ASSEMBLY
DETAIL (J105 SERIES ONLY)
J-SERIES MATV ANTENNA (VHF AND FM)
Instruction Sheet
30406-001 Rev. J
Please Note:
A qualified structural engineer
should be consulted prior to mounting an
antenna on a tower or support structure.
ORANGE PLASTIC
PLUG
ORANGE PLASTIC
PLUG
CROSSARM
CROSSARM
ELEMENT
ELEMENT
