AS-1735/SRC
VTM-01-003C
Valcom Mfg Grp, Inc.
-8-
Support assemblies must be provided between the mast and the antenna’s Radiating Element
Sections and Lower Feed Section for proper installation of the antenna. The support assemblies
are not supplied by the manufacturer.
Various types of support assemblies may be utilized in the installation of the AS-1735/SRC
antenna. The type of assembly used depends upon the mast size. However, it is imperative that
proper alignment, positioning and location of the mounting holes of the support assembly be
maintained. If misalignment exists, the AS-1735/SRC will suffer excessive stress levels which
will greatly reduce the reliable lifespan of the antenna.
The antenna must be mounted on the mast so that it is high enough to clear any obstructions
which may hinder the antenna’s “line of sight” mode of operation. A minimum vertical spacing
of 4 feet must be maintained between the AS-1735/SRC and any other projections from the mast.
This is to ensure full efficiency of the antenna and also to protect against damage to other
equipment by the high power levels radiating from the antenna.
Orientation of the elements of the AS-1735/SRC is not critical as the antenna is designed to
provide omnidirectional radiation in the azimuth plane.
The easiest recommended installation is to raise the antenna to the top of the mast then sliding it
down over the mast and bolting it to the appropriate mounting location. If possible, the mast
may even be lowered to a near horizontal state and the antenna slipped over the top of the mast.
Line up the bolt holes of the seven flanges to the support assembly attached to the mast. Use
stainless steel hardware, such as 3/8" bolts and lock washers (not supplied), to fasten the antenna
to the support assembly.
Note :
The use of an anti-seize thread compound per MIL-A-907
is highly recommended on the threads of all hardware.
Use some touch-up paint to seal around the joint where the seven antenna mounting flanges meet
the support assembly. Also touch up any chips which may have occurred on the hardware during
disassembly.
2.7 Alternate Installation Method
In some instances, it may not be possible to raise the antenna over top of the mast, nor to lower
the mast to a comfortable working height. If this is the case, it may be necessary to separate the
AS-1735/SRC into the three main sections, as identified in Figure 2.1, by removing both sets of
the four screws at the top of the two elbow joint flanges. Keep the hardware and the two rubber
O-rings in a safe place for re-assembling.
