User's Guide

Installation & Methods
MBTS
35463.DOC Samsung Telecommunications America Wireless Systems Lab
ID: Rev: Confidential and Proprietary Page 30 of 32
1.4 Cable Hoisting
Obtain suitable hoist line that will adequately support weight of the cable. Refer to cable Manufacturers
Installation Instructions for approximate weights per 100-foot (30m) length of various size cables.
Use a cable pulley high on the tower to allow cable connection to antenna, and another pulley at the bottom of
tower. Most lengths can be hoisted manually; however, a winch is recommended for heavy lifts.
Support the reel on an axle to permit free rotation as the cable is hoisted. Cable paying off the top is the
safest method for heavily loaded reels. For lighter loads, which can be broken by hand, reels can be
positioned 180 degrees opposite so cable pays from bottom of reel. Uncoil short length not on reels along
ground and away from tower.
Place protective covering over the connector to prevent damage during hoisting. Attach a rope sling or cable
grip near the end of the cable allowing sufficient length to reach the antenna input from hoisted cable position.
Tie the end of cable to the hoist line to keep from dangling. The rope sling may be in lieu of cable grips for
very short lengths. When installing lengths more than 150 feet, additional cable grips at 100 to 150 feet are
required. Additional tying is done above and below the cable grips to keep weight on the hoist line and not on
the cable. Make certain to allow slack in the cable when tying and that slack is maintained in the cable while
hoisting. Use fiber-reinforced tape or similar material at 50 intervals for tying as the cable is raised.
Note: Never use hoisting grips at intervals more than 200 feet.
Hoist cable slowly. To prevent kinking, rotation of reel must be retarded to control payout of cable. Avoid
snags when hoisting or routing cable through and around tower members. Careless handling can cause
kinks, dents, and scrapes. Do not make bends shorter than the cable minimum bend radius. Care must be
taken to apply an even pressure when forming cable. When routing is confined and shorter bends are
required, a jumper assembly with a greater bending radius should be used.
Note: The following warnings are presented to alert you to possible dangers in misusing Hoisting Grips.
Failure to adhere to a warning may result in injury or death to you or to others.
Do not use one hoisting grip for hoisting two or more cables. This can cause the hoisting grip to break or the
cables to fall.
Never use hoisting grips for lowering cable. Snapping of the cable may loosen the grip and possibly cause
the cable to sway or fall.
Do not reuse hoisting grips. Used grips may have lost elasticity, stretched, or become weakened. Reusing
hoisting grips can cause the cable to slip, break, or fall.
Make sure the size of the hoisting grip matches the size of the cable. Slippage can occur with a larger
hoisting grip and insufficient gripping strength can result with a smaller grip.
Maintain tension on the hoisting grip during hoisting. Loss of tension can cause dangerous movement of the
cable and result in injury or death to you or others on or near the tower. Also, do not release tension on the
grip until after the cable has been fastened to the tower members.
1.5 Cable Anchoring
The main feeder line in an antenna system may be from ¼” to 2 ¼” or up to several inches in diameter. The
antenna lines should be secured using corrosion-resistant hardware. Attachment to the tower can be
accomplished using beam clamps, butterflies, donuts, and snap-in clamps, etc. The method of securing the
line is dependent on the type of tower and the unique requirements of each customer. However, below are
some standard guidelines to follow when anchoring antenna transmission lines.