1. Carefully read through the instructions and study the figures before you begin installation of the
antenna.
2. Consult figure 6 and Element Table and Assemble the elements onto the crossarm in their respective
positions as denoted buy their length and letter. DO NOT overtighten the hex-bolts securing the
elements.
3. Next assemble the feedlines connecting dipole elements C and D as shown using feedline clamps and
10-32 x 5/8 in. screws. Attach feedlines to top of feedline clamps with a centre to centre spacing of
11/16 in. (See Figures 1 and 2)
4. Disregard any unmarked holes on crossarm. Crossarm can be used for other models.
Y113B-140
YAGI ANTENNA
Please Note:
A qualified structural engineer
should be consulted prior to mounting an
antenna on a tower or support structure.
Figure 1
Figure 2
HEX HEAD SCREW
1/4-20 UNC X 2 1/4 in.
(5.72 cm) LONG
DIPOLE "D"
CROSSARM
DIPOLE "C"
FEEDLINE CLAMP
FEEDLINE
ROUND HEAD SCREW
#10-32 UNF X 5/8 in.
(1.59 cm) LONG
FEEDLINE CLAMP
11/16 in. (1.75 cm)
PLASTIC INSULATOR
Instruction Sheet
390585 Rev. H
