*Note: Minimum pipe diameter recommended is 60 mm (2.4”). This mount can be used on pipe diameters measuring down to 33 mm (1.3”); however, this is only recommended for building mounts or applications with no signifi cant side wind load.
Downtilt Mounting Kit 600899A-2
Installation InstructionsBulletin 237546 • Revision K • September 2009
Andrew Institute offers installation training.
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Connector coupling torque:Type N: 1.7–2.3 N·m (15–20 lbf-in)7-16 DIN: 25–30 N·m (220–265 lbf-in)
NOTICEThe installation, maintenance, or removal of an antenna requires qualified, experienced personnel. Andrew installation instructions are written for such installation personnel. Antenna systems should be inspected once a year by qualifi ed personnel to verify proper installation, maintenance, and condition of equipment.
Andrew disclaims any liability or responsibility for the results of improper or unsafe installation practices.
Do not install near power lines. Power lines, telephone lines, and guy wires look the same. Assume any wire or line can electrocute you.
Do not install on a wet or windy day or when lightning or thunder is in the area. Do not use metal ladder.
Wear shoes with rubber soles and heels. Wear protective clothing including a long-sleeved shirt and rubber gloves.
Reverse brackets for uptilt option.
2.4”–4.5”(*60 mm–115 mm)
Bulletin 237546 • Revision K • September 2009 • Page 2 of 5600899A-2 Downtilt Mounting Kit Andrew, A CommScope Company
1Carefully remove contents of shipping boxes. Unpack and verify the contents. Refer to the list below. You need all parts to assemble, install, and operate the antenna.
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Top Mount Assembly
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Bottom Mount Assembly
Quantity Item Number (see illustrations, above) Andrew Part Number Description
M8 fl at washer STL GALV
M8 x 1.25 x 25 mm large carriage bolt STL GALV
M8 lock washer STL GALV
M8 X 1.25 X 110 mm large hex head screw STL GALV
M8 x 1.25 hex nut STL GALV
Large lock washer
M12 x 1.75 hex nut
M12 x 1.75 x 150 mm large carriage bolt
Andrew, A CommScope Company 600899A-2 Downtilt Mounting KitBulletin 237546 • Revision K • September 2009 • Page 3 of 5 3 5K
2Attach top mount assembly to top mount-ing plate attached to the antenna as shown. Finger tighten.
NOTE: To obtain a negative angle (e.g. –2°), attach the top (downtilt) assembly to the bottom antenna bracket. Also see “Uptilt Mounting Option”.
3Attach bottom mount assembly to bottom mounting plate attached to the antenna as shown. Finger tighten.
Uptilt Mounting OptionFor uptilt option, attach the top (downtilt) assembly to the bottom antenna bracket and the bottom (standard pipe mount) assembly to the top antenna bracket..
Top (downtilt) assembly is attached to the bottom antenna bracket.
Bottom (standard pipe mount) assembly is attached to the top antenna bracket.
Antenna is tilted from the bottom at a negative angle.
Avoid skin contact with grease. Keep away from mouth. Wash after use with soap and water. Do not store open near food.!
Bulletin 237546 • Revision K • September 2009 • Page 4 of 5600899A-2 Downtilt Mounting Kit Andrew, A CommScope Company
5Attach antenna assembly to pole. Finger tighten.
4 Position downtilt bracket to 0°.
Ensure downtilt bracket is fully collapsed.
Draw an imaginary vertical line through the center of the heads of the bolts to ensure antenna is at 0° when fi rst installed.
Antenna pivot hole to pivot hole dimension. Varies by antenna.
Place edge of inclinometer against edge of mounting rail ensure antenna is at 0°.
Note: See “Hoisting Procedures.”It is normal for the pipe mount to bend slightly to conform to the size of the mounting pipe.
Lock these nuts before attaching to pole
Andrew, A CommScope Company 600899A-2 Downtilt Mounting KitBulletin 237546 • Revision K • September 2009 • Page 5 of 5 5 5K
Hoisting ProceduresPresassemble hardware as much as possible before lifting antenna up tower.
Attach a rope to the top mounting bracket.
Keep the antenna vertical while hoisting.
For safety, an additional rope can be attached to the bottom mounting bracket and used as a guide by someone else on the ground.
6Place an inclinometer on the back of the antenna to set the true mechanical downtilt of the antenna.
7Tighten all hardware.
Andrew, A Commscope Company www.andrew.comVisit our Web site at www.commscope.com or contact your local Andrew representative for more information.© 2009 CommScope, Inc. All rights reserved.Andrew is a trademark of CommScope. All trademarks identifi ed by ® or ™ are registered trademarks or trademarks, respectively, of CommScope. This document is for planning purposes only and is not intended to modify or supplement any specifi cations or warranties relating to Andrew products or services.
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