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DSEFO222-22 Rev 2/21
BOOM SAG SUPPORT ASSEMBLY INSTRUCTIONS
15)
Last is the boom sag brace assembly. We recommend attaching the antenna to a
temporary support to get the adjustments done before erecting on your tower.
16)
The boom to mast plate mounts between D11 and D12,
using ¼” X 1 ½” U-bolts,
saddles, lock washers, flat washers and nuts. The exact position should be determined by
balance with your feed line in place. If unsure, just center it between D11 and D12.
17)
Mount the antenna to a mast and assemble the boom sag long tangent U-bolt by
placing the saddle on the legs of the U-
bolt. Next slide on the ½” spacers, then a 5/16” flat
washer, lock washer and nut. This assembly
should be about 24” above the antenna.
18)
Next, locate the two ¾” X 72” long boom sag struts and place a ¾” hose clamp over the
slits. Then place a flat washer on each leg of the long tangent U-bolt you just installed and
place the flattened end of one of the boom sag struts on each leg, followed by another flat
washer and a nylon lock nut. DO NOT TIGHTEN THE NUTS TO A POINT WHERE THE
BOOM SAG STRUTS CAN’T MOVE.
Mast Boom Sag Support
19)
Install a boom sag support bracket on the front of the rear boom section (marked in
black), placing the bracket so that it is against the next boom section.
20)
Locate the
shorter 5/8” X 24” boom sag strut and slide the strut into the ¾” strut coming
from the mast going to the rear. Attach the end of the boom sag to the boom sag bracket using
a 10-
32 X 1” screw and nylon lock nut. Do not over tighten. Snug the hose
clamp slightly over the slits to hold it in place.
21)
Locate the
5/8” X 48” boom sag strut and slide the strut into the ¾” strut coming from
the mast going to the front. Attach the end of the boom sag to the boom sag bracket using a
10-
32 X 1” screw and nylon lock nut. Do not over tighten. Snug the hose
clamp slightly over the slits to hold it in place.
