Assembly of the Boom
Assembly Instructions
Select the boom-to-mast clamp, (385142-1)
the boom-to-mast bracket (385144-1) and
four (4) 1/4" - 20 x 3/4" bolts (505266)
four (4) internal lockwashers (562961)
and four (4) 1/4" hex nuts (554099)
Place the boom-to-mast bracket (385144-1)
on the boom-to-mast clamp (385142-1)
align the holes and place the bolts in the
four (4) outer holes as shown in Figure 1
Select the two sections of boom (Front and
Rear), and insert them into the boom-to-mast
bracket until they meet at the center. Tighten
the bolts.
Install the U-bolts using the 5/16 nuts (555747)
385142-1
385144-1
562961,554099
and the 5/16 split washers (564792).
555747
564792
540067
Long tube ( 85 inch)
Short tube ( 75 inch)
Front of antenna
You may place the boom on a temporary mast or support it from each end.
This will make assembly and measurements easier. Find a location that is
suitable for an antenna this large. A concrete driveway is a good place to
assemble antennas. Any hardware you drop in grass may be gone forever.
Some of the smaller hardware has extra pieces just in case they are dropped.
170415
170413
3
