Racal Instruments AN/TRC-207, Operation And Maintenance Instructions

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TO 31R2-2TRC207-1
2-6
c. Remove both mast sections from the transit bag (3). Note that the socketed end is the lower end of each
section. Place the tubes in line along the ground. Assemble the two tube sections together.
d. Remove the base plate (4), two ground spikes (5), and hammer from the transit bag. Place the base
plate at the mast base, arrowhead style, so that the socketed lower end of the mast will engage in the
heel. Secure the base plate by driving the two ground spikes through the holes.
Before using the hammer, ensure a wedge is placed in the top of the hammer so that the hammer
head does not come loose, thereby endangering personnel.
Figure 2-3. Antenna Mast/Antenna Installation (Sheet 2 of 6)
e. Place the antenna/adapter assembly on the top mast section. Ensure the adapter is fully seated on the
mast section. Connect the top coaxial cable connector to the antenna and attach cable strain relief to
hole in web of adapter. Rest flat edge of adapter on ground to provide convenient access to guy rope
attachment points. Unwind cable along length of mast and secure to mast at centers of each section.
Secure using cable clamps.
Figure 2-4. Antenna Mast/Antenna Installation (Sheet 3 of 6)
f. Remove three guy rope assemblies (6) and three ground anchors (7) from the transit bag. Disconnect
the first (fixed) snap hook off the winder and temporarily connect it to the base plate. Carrying the
hammer and one of the ground anchors, walk away in the exact opposite direction to the mast (i.e., in
the direction that the arrow head is pointing) unwinding the guy rope as you go, until the ground anchor
radius marker is reached. Drive in the ground anchor at this point ensuring that it leans away from the
mast (approximately 20
o
from vertical).
WARNING