Specifications

Chapter 2 - Installation
42S315F 2-14
1. Install four threaded rods (item 35) one in each hole on the inner truss pad
using two washers (item 9) and two nuts (item 10) on each rod. Install
another nut (item 10) 2 1/8-inches (5.4 cm) above pad on each rod. Place one
washer (item 9) on top of each nut. (These threaded rods will be used to
mount the panels.)
2. Install two threaded rods (item 35) one in each hole on outer truss pad using
two washers (item 9) and two nuts (item 10) on each rod. Install another nut
(item 10) 1 1/2-inches (3.8 cm) above pad on each rod. Place one washer
(item 9) on top of each nut.
3. Extend 4-foot lengths of 2 x 4 lumber from halfway out on trusses to the
ground. Clamp boards securely in place with "C" type clamps. This should
be done on every other truss to provide outrigger stability to the reflector
while it is being assembled.
CAUTION
As the reflector panels are assembled, the reflector will
become highly susceptible to wind forces; therefore, secure
the hub-truss assembly as indicated in the following step
before installing panels.
4. Tie six equally spaced trusses to ground stakes using wire rope. Secure rope
to outermost junction on the lower main radial rib of the truss. Do not use a
mechanical device to tighten the ropes since this could damage the trusses.
This should prevent the reflector from overturning. This tie-down
procedure is a mandatory precaution if the reflector is to be left on the
ground overnight and unattended.
NOTE
There are two tiers of 24 panels each for the 9-meter
antenna. The inner tier of panels is installed first, then the
outer tier.
5. Place inner panel (item 4) on threaded rods at position closest to hub as
shown in drawing.
6. Secure outer portion of panel to rods using two flat washers (item 9) and two
nuts (item 10).
7. Secure inner portion of panel to hub using washer (item 9) and screw (item
32).