Part No. Description
Metric Equiv
Quantity
010011
#8-32 SS Nut
2
010082
1/4-20 x 1" SS Hex Bolt
2.5 cm
9
010084
1/4" SS Lock Washer
0.6 cm
24
010085
1/4-20 SS Nut
0.6 cm
2
010104
1/4" SS Flat Washer
0.6 cm
2
010207
3/8" SS Flat Washer
0.9 cm
2
010212
1/4-20 x 2" SS Hex Bolt
5.1 cm
2
010231
#8-32 x 1-3/4" SS Machine Screw 38 x 4.4 cm
6
010232
#8-32 x 2-1/2" SS Machine Screw
6.4 cm
1
011941
#8 SS Lock Washer
11
014387
#8-32 SS/Nylon Hex Lock Nut
9
014399
1/4-20 SS/Nylon Hex Lock Nut
0.6 cm
24
014497
1 1/4" Cush-a-Clamp
3.2 cm
6
014588
1/4" x 3 1/2" SS Hex Bolt
0.6 cm x 8.9 cm
1
014592
1/4" Flat Washer 1/8" thick
0.6 cm x 0.3 cm
2
024259
1/8" Thimble
0.3 cm
2
024624
1/8" Cable Clamp
0.3 cm
6
030407
5/8" Worm Clamp
1.6 cm
2
030409
1-1/16" Worm Clamp
1.7 cm
2
030411
1-1/8" Worm Clamp
2.9 cm
4
030412
1-1/2" Worm Clamp
3.8 cm
2
032881
2-3/4" Worm Clamp
7 cm
2
050077
3/8" Plastic Cap
1 cm
2
050131
1-1/8" Plastic Cap
2.9 cm
1
094622
30' Roll of Phillystran Cable
9.1 m
1
Verify all parts are present by using the X740 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 X740 40 meter add-on kit. This kit 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. Cushcraft operates
a full service Technical Support staff to answer questions regarding assembly, tuning, parts and just about everything else. Please contact us
by phone (603) 627-7877 (8 AM - 5PM Eastern time or voice mail after hours), FAX (603) 627-1764, or email [email protected].
WARNING
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 X740 consists of assembling the following subassemblies. 1) Verification of Parts. 2) Element Assembly
3) Element to Boom Assembly. 4 )Feed System Assembly. 5) Element Truss Assembly. 6) X-hat Assembly Assembly of the X740 will
be easiest if the preceding steps are performed in the given order.
Please read through the entire assembly procedure before beginning.
1-Verification of Parts
Part No. Description
Metric Equiv
Quantity
124567
1" x 8" Drilled Fiberglass Insulator
2.5 x 20.3 cm
1
190026
Formed Aluminum Bracket
5
190028
Formed Aluminum Half Washer
4
194707
4" x 24" Drilled U-Channel Bracket
10.2 x 61 cm
1
200088
1" Diameter Formed Aluminum Clamp
2.5 cm
2
290326
Warning sticker
1
321045
3/8" Aluminum Spacer
1.0 cm
2
323718
Extruded Al V-Block
1
324071
Black Plastic Insulator
1
324509
4 x 5 1/4" x 3/16" Drilled Al Bracket
10.2 x 13.3 x 0.5 cm
2
EA
1-1/4" x 72" Drilled&slotted Al Tube w/insert
3.2 x 183 cm
2
EB
1-1/8" x 48" Al Tube slotted 1 end
2.8 cm x 183 cm
2
EC
1" x 48" Aluminum Tube slotted 1 end
2.5 x 183 cm
2
ED
1/2" x 48" Aluminum Tube slotted 1 end
1.3 x 183 cm
2
EE
3/8" x 36" Aluminum Tube
1.0 x 91 cm
2
EF
1-1/8" x 18" Aluminum Tube drilled 1 end
2.8 cm x 45.7 cm
1
LCA
40 Meter Loading Coil
2
MNX740 X740 Matching Network
1
XHR
3/8" x 34 1/2" Aluminum Rod drilled in center 1.0 x 87.6 cm
4
X79FS
1/2" Tinned Copper Braid 6" Long with Lugs
1.2 cm x 15 cm
2
X740
1