Verify all parts are present by using the XM520 Master Parts List. Check off each part when it is counted. There are extra parts intentionally
shipped with this antenna. Place common hardware in temporary containers for ease of assembly. Note all hardware is Stainless Steel.
Thank you for your purchase of the Cushcraft XM520 . This antenna is designed and manufactured to give the best performance and trouble
free service. The antenna will perform as specified if the instructions are followed during assembly and installation.
If you have technical questions
and have access to the World Wide Web you can visit Cushcraft’s
TECHEXPRESS support service (http://www.cushcraft.com). The site
enables the user to place parts orders, ask technical questions, locate part numbers, initiate warranty inquires and review
Frequently Asked
Questions. Our technical support staff can be reached by phone at (603) 627-7877 (8 AM to 5 PM Eastern time or voice mail after hours), faxed
at (603) 627-1764 or can be e-mailed at
THIS ANTENNA IS AN ELECTRICAL CONDUCTOR. CONTACT WITH POWER LINES CAN RESULT IN DEATH OR SERIOUS INJURY.
DO NOT INSTALL THIS ANTENNA WHERE THERE IS ANY POSSIBILITY OF CONTACT WITH OR HIGH VOLTAGE ARC-OVER FROM
POWER CABLES OR SERVICE DROPS TO BUILDINGS. THE ANTENNA, SUPPORTING MAST AND/OR TOWER MUST NOT BE CLOSE
TO ANY POWER LINES DURING INSTALLATION, REMOVAL OR IN THE EVENT PART OF THE SYSTEM SHOULD ACCIDENTALLY FALL.
FOLLOW THE GUIDELINES FOR ANTENNA INSTALLATION RECOMMENDED BY THE U.S. CONSUMER PRODUCT SAFETY COMMISSION
AND LISTED IN THE ENCLOSED PAMPHLETS.
Antenna System Planning
Before assembly, take time to review your installation plans for the antenna. Location of the antenna is very important. Surrounding objects such
as trees, power lines, buildings, and other antennas will interact with an HF Yagi. To minimize the effects of surrounding objects, mount the
antenna as high and in the clear as possible. Metallic guy wire within 30 feet of this antenna, if broken with strain insulators, will improve
performance.
YOU MUST INSURE THAT NEITHER PEOPLE OR PETS CAN COME IN CONTACT WITH YOUR ANTENNA WHILE IT IS IN
OPERATION. DEADLY VOLTAGES AND CURRENTS MAY EXIST. ALSO, SINCE THE EFFECTS OF EXPOSURE TO RF ARE NOT FULLY
UNDERSTOOD, LONG TERM EXPOSURE TO INTENSE RF FIELDS IS NOT RECOMMENDED. THERE IS A WARNING STICKER WHICH
MUST BE ATTACHED TO THE BOOM AS SHOWN IN FIGURE A. Plan your installation carefully. If you use volunteer helpers be sure that
they are qualified to assist you. Make certain that everyone involved understands that you are in charge and that they must follow your instructions.
If you have any doubts at all, employ a professional antenna installation company to install your antenna.
System Grounding
Direct grounding of the antenna, mast and tower is very important. This serves as protection from lightning strikes and static buildup. A good
electrical connection should be made to one or more ground rods directly at the base of the tower or mast using at least #10 AWG ground wire
and non-corrosive hardware. For details and safety standards, consult the National Electrical Code. A coaxial lightning arrester should be used.
Cushcraft offers several different models such as the LAC series.
Assembly
The assembly procedure for the XM520 consists of assembling the following subassemblies. 1) Boom Assembly. 2) Element Assembly.
3) Element to Boom Assembly. 4) Feed System Assembly. 5)Boom to Mast Assembly. 6) Boom Truss Assembly. Assembly of the XM520
will be easiest if the preceding steps are performed in the given order.
Please read through the entire assembly procedure before beginning.
1
XM520
Verification of Parts
Part No.
Description
Metric Equivadent
Quantity
Qty Check
MNXM
Matching Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
____
X79FS
6” feed strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.2 cm
2
____
XM520FL
5/8” x 85-1/2” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 x 217.2 cm
2
____
XM520EA
1-3/8” x 48” aluminum tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 x 121.9 cm
3
____
XM520EB
1-1/4” x 24” aluminum tube, slotted one end . . . . . . . . . . . . . . . . .
2.5 x 60.1 cm
10
____
X79EC
7/8”-1” x 36” aluminum tube, swedged, slotted one end . . . . . . . . . . . . 2.2-2.5 x 91.4 cm
10
____
X79ED
5/8-3/4” x 36” aluminum tube, swedged, slotted one end . . . . . . . . . . . . 1.6-1.9 x 91.4 cm
10
____
X79EE
1/2” x 36” aluminum tube, slotted one end . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 x 91.4 cm
10
____
X79EF
3/8” x 48” aluminum tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.9 x 121.9 cm
6
____
XM520EG
3/8” x 50” aluminum tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.9 x 127 cm
2
____
XM520EH
1-3/8” x 24” aluminum tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 x 61.0 cm
4
____
X79EJ
3/8” x 32” aluminum tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.9 x 81.3 cm
2
____
XM520EK
1-1/8” x 36” aluminum tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9 x 91.4 cm
10
____
XM520BA
2-1/2” x 84” aluminum tube, 4 holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3 x 213.4 cm
2
____
XM520BB
2-1/2” x 84” aluminum tube, 4 holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3 x 213.4 cm
2
____
XM520BC
2-1/2” x 84” aluminum tube, 8 holes . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3 x 213.4 cm
1
____
X79BD
2-3/8” x 12” aluminum tube, 4 holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.0 x 30.5 cm
2
____
XM520BE
2-3/8” x 60” aluminum tube, 8 holes . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.0 x 152.4 cm
1
____
XM520BF
2-3/8” x 84” aluminum tube, 4 holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.0 x 213.4 cm
1
____
