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Page 38
SECTION 4.4
ATTACH THE ELEMENTS TO THE EHUs
PREPARE THE CPVC INNER
-
GUIDE TUBE & DIVERTER CONE
The loops on the UrbanBeam Yagi use a plastic tube and a diverter cone, located inside the telescoping pole,
to guide the copper strip out of the EHU. The plastic tube is off
-
white and is made of CPVC. There are 3
pieces that make up the guide tube assembly: The diverter cone (PN 10
-
1509
-
02), the
39
-
7/8”
section of
3/4”
CPVC with no coupler (PN 70
-
2025
-
23) and the
49”
section of
3/4”
CPVC with a coupler attached to one
end (PN 70
-
2025
-
13). This guide tube is only required for Driven element EHU tubes. The guide tube is not
needed on the Director side of the loop.
Figure 4.41
shows the three pieces in the assembly.
The smaller diameter end of the diverter cone is glued to one end of the
39
-
7/8”
CPVC tube as shown in
Fig-
ure 4.42
. Use the supplied glue and applicator as shown in
Figure 4.43
. Apply the glue evenly around the
outside diameter of the tube as shown in
Figure 4.43
. Be sure you get even coverage all the way around
the tube. Cover about
3/4”
of an inch deep as shown in
Figure 4.43
. Firmly push and twist the
39
-
7/8”
CPVC tube into the diverter cone end as shown in
Figure 4.44
. Let the glue dry at least 20 minutes before
moving it.
Apply glue evenly around the outside diameter of the
39
-
7/8”
CPVC tube as shown in
Figure 4.45
. Apply ap-
proximately
3/4”
deep as per prior step. Locate the
49”
CPVC tube (PN 70
-
2025
-
13) with coupler, as
shown in
Figure 4.46
. Push and twist the
39
-
7/8”
tube firmly into the coupler as shown in
Figure 4.47
.
Repeat above instructions for remaining guide tube assembly (two per Driven EHU only).
WARNING
: Do not apply glue to the inner
“
female
”
portion of either the diverter cone or coupler. The glue
applied to the outside of the tube is sufficient to bond the two pieces, and will prevent potential for damag-
ing obstructions being formed by dried glue.
Diverter Cone
PN 10
-
1509
-
02
39
-
7/8”
CPVC
PN 70
-
2025
-
23
49”
CPVC
PN 70
-
2025
-
13
Apply glue ONLY on the
outside diameter of the
ends of the
39
-
7/8”
pipe
NO
GLUE
NO
GLUE
NEVER
use glue on the inside “female”
portion of the diverter cone or coupler
FIG. 4.41
FIG. 4.42
FIG. 4.44
FIG. 4.45
3/4
”
FIG. 4.43
FIG. 4.46
FIG. 4.47
