FIGURE F
Strain
Relief
Loop
Shield Side
(Boom)
EL 14
EL 1
DETAIL 1
Horizontal Mount
DETAIL 2
Vertical Mount
MAST
MAST
45
8
9
35
Boom
(Shield Side)
Boom
(Shield Side)
89
7
9
8
209
6. Antenna Mounting:
The ALS670 is supplied with mounting hardware for horizontal or vertical polarization. For horizontal polarization,
install the two U-bolt mounting clamp assemblies as shown in
Figure G, Detail-1.
When mounting the antenna
horizontally, position the shield-side rail down and run the cable down the mast.
For vertical installation, install the two truss brackets (89) in using 3/8" x 1" bolts, as shown in
Figure G, Detail-2
.
Orient the shield side of the antenna boom toward the truss brackets. Finally, install the U-bolt mounting clamps on
the truss brackets, as shown.
ASL670
FIGURE G
7
010207
FLAT
.391”
2
WASHER
(.99 cm)
8
010208
SPLIT
3/8”
6
LOCK WASHER
(.95 cm)
9
010209
HEX NUT
3/8”-16
6
(.95 cm)
35
170035
MAST
9/16" x 3-1/2”
2
V-BLOCK
(.43 x 8.89 cm)
45
321045
ALUMINIUM
1/2” x 5/16”
4
SPACER
(1.27 x .79 cm)
52
014952
HEX BOLT
3/8”-16 x 1”
2
(.95 x 2.54 cm)
89
195189
TRUSS
__
2
BRACKET
209
013209
U-BOLT
3/8”-16 x 4”
2
(.95 x 10.16 cm)
KEY
P/N DISPLAY
DESC
SIZE
QTY
5. Feedline Routing:
To prevent detuning the antenna, the feedline must be
routed back to LPA mounting bracket along the inside
of the boom channel that is connected to the coax
cable's shield.
Identify the boom channel connected to the coaxial
cable's shield. The ASL670FL feedline block should
display a mark or sticker indicating the correct side. If,
for any reason it does not, you may use an ohmmeter
to identify the shield side.
Form a stress-relief loop in the coax, as shown in
Figure-F
, then route the coax back to the LPA mounting
plate inside the shielded rail.
Secure the line in place with plastic tie wraps threaded through unused element-mounting holes.
Do not over tighten the tie wraps, as this may crimp and damage the coax cable.
Important Warning: Do not run feedline along the rail connected to its center conductor. This will detune the
antenna and deteriorate performance!
6
4 PLACES
4 PLACES
4 PLACES
4 PLACES
2 PLACES
2 PLACES
2 PLACES
2 PLACES
52
2 PLACES
KEY
P/N DISPLAY
DESC
SIZE
QTY
345
035345
CableTie
_____
4
345
4 PLACES