R7000 Manual Singles CUSHCRAFT R 7000 INSTALLATION
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COMMUNICATIONS ANTENNAS
ASSEMBLY AND
INSTALLATION INSTRUCTIONS
R7000
10, 12, 15, 17, 20, 30, 40 Meters
1
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 HIGH VOLTAGE OR 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 INSTALLATIONS RECOMMENDED BY THE U.S. CONSUMER PRODUCT SAFETY COMMISSION AND LISTED IN THE ENCLOSED
PAMPHLET.
Your Cushcraft R7000 vertical antenna is designed and manufactured to give trouble free service. This antenna will perform as specified if
the instructions and suggestions in this manual are followed and care is used in the assembly and installation. When checking the components
received in your antenna package use the parts listed beside each diagram. There is a master parts list on page 2. If you are unable to locate
any tube or component, check the inside of all tubing. IMPORTANT: Save the weight label from the outside of the carton. Each antenna is
weighed at the factory to verify the parts count. If you claim a missing part, you will be asked for the weight verification label.
PLANNING
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 the boss and that they must follow your instructions. If you have any doubts at all, employ a professional antenna
installation company to install your antenna.
LOCATION
Although the R7000 will operate in almost any location, it will perform best if it is mounted vertically and located in the clear away from surrounding
objects such as buildings, trees, power lines, towers, guy wires, antennas and metallic objects. The R7000 should not be attached to a ground
radial system. Failure to heed these points will possibly degrade performance, detune the antenna and increase VSWR.
EXTREME CARE MUST BE USED FOR YOUR SAFETY. YOU MUST INSURE THAT WHILE THE R7000 IS IN OPERATION NEITHER
PEOPLE OR PETS CAN COME IN CONTACT WITH ANY PORTION OF YOUR ANTENNA INCLUDING THE COUNTERPOISE RODS.
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 ARE SEVEN WARNING STICKERS WHICH MUST
BE ATTACHED TO THE ENDS OF THE COUNTERPOISE RODS AS SHOWN IN FIGURE 2.
MOUNTING
Your mast should be rigid and pointing straight up. Always use a mast at least 1-3/4 inches (4.4 cm) but not larger than 2-1/8 inches (5.4 cm)
in diameter. If you guy the mast, use non-conducting guy wires.
SYSTEM GROUNDING
Direct grounding of the antenna mast is very important. This serves as protection from lightning strikes and static buildup, and from high voltages
which may be present in the equipment attached to the antenna. A good electrical connection should be made to one or more ground rods
directly at the base of the antenna or mast using a least #10 AWG ground wire and non-corrosive hardware. For details and safety standards,
consult the National Electrical Code. You should also use a coaxial lightning arrestor. Cushcraft offers several different models, such as the
LAC-1, LAC-2 or the LAC-4 series.
ASSEMBLY
Assemble your R7000 by following steps 1 through 5. After assembling the antenna, verify all dimensions in figure F for accuracy. Then return
to the adjustment section below for final tuning.
ADJUSTMENT
The dimensions in figure F normally allow proper operation on all the bands. However, some variations may occur from one location to another.
Adjustments must be made from the bottom of the antenna to the top. Adjusting the antenna from top to bottom will not work. This is because
the settings at the top are severely affected by the adjustments at the bottom.
We suggest measuring the VSWR of your antenna by using the SWR meter in your transceiver. If your transceiver does not have one, use a
good quality VSWR bridge for this application. We will begin with 10 meters since this is at the bottom of the antenna. Set your transceiver at
your favorite frequency on 10 meters. Key the rig and check your VSWR. The R7000 is extremely broadbanded on 10 meters and seldom
needs adjustment. If the VSWR is low enough (below 1.5:1) then move on to the 12 meter band. If the 10 meter VSWR is not low enough,
adjust the antenna as follows: Check several frequencies on 10 meters to find the frequency of lowest VSWR. If the frequency of lowest VSWR
is above your favorite frequency, lengthen dimension A (figure F) by 1 inch (2.5 cm). This should lower the frequency of lowest VSWR by 50
to 100 KHz. If the frequency of lowest VSWR is below your desired frequency, shorten dimension A (figure F) by 1 inch (2.5 cm). Check your
desired 10 meter operating frequency again to see if the VSWR is less than 1.5:1. Repeat this procedure until the VSWR at your desired
frequency is low enough. Adjusting Dimension A is also used to move the resonant frequency of 12m.
Continue this procedure by selecting your desired frequency on 15 meters and checking the VSWR there. Dimension B (figure F) should be
used to adjust the VSWR on 15 meters.
Remember to shorten this dimension to raise the frequency or lengthen it to lower the frequency.
The balance of the antenna should be adjusted in a like manner. The dimensions and the bands that they effect are shown in figure F. On 10
through 30 meters 1 inch (2.5 cm) of change in length will change the operating frequency by 50 to 100 KHz. On 30 and 40 meters the change
will be 15 to 25 KHz per inch (5 to 10 KHz/cm). When the antenna is completely adjusted, check all fasteners to be sure they are tight. Improving
VSWR's that are less than 2:1 will not noticeably improve station performance.
MASTER PARTS LIST
KEY PART# DESCRIPTION QTY
KEY PART# DESCRIPTION QTY
R7000
Your Cushcraft R7000 vertical antenna is designed and manufactured to give trouble free service. This antenna will perform as specified if
the instructions and suggestions in this manual are followed and care is used in the assembly and installation. When checking the components
received in your antenna package use the parts listed beside each diagram. There is a master parts list on page 2. If you are unable to locate
any tube or component, check the inside of all tubing. IMPORTANT: Save the weight label from the outside of the carton. Each antenna is
weighed at the factory to verify the parts count. If you claim a missing part, you will be asked for the weight verification label.
PLANNING
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 the boss and that they must follow your instructions. If you have any doubts at all, employ a professional antenna
installation company to install your antenna.
LOCATION
Although the R7000 will operate in almost any location, it will perform best if it is mounted vertically and located in the clear away from surrounding
objects such as buildings, trees, power lines, towers, guy wires, antennas and metallic objects. The R7000 should not be attached to a ground
radial system. Failure to heed these points will possibly degrade performance, detune the antenna and increase VSWR.
EXTREME CARE MUST BE USED FOR YOUR SAFETY. YOU MUST INSURE THAT WHILE THE R7000 IS IN OPERATION NEITHER
PEOPLE OR PETS CAN COME IN CONTACT WITH ANY PORTION OF YOUR ANTENNA INCLUDING THE COUNTERPOISE RODS.
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 ARE SEVEN WARNING STICKERS WHICH MUST
BE ATTACHED TO THE ENDS OF THE COUNTERPOISE RODS AS SHOWN IN FIGURE 2.
MOUNTING
Your mast should be rigid and pointing straight up. Always use a mast at least 1-3/4 inches (4.4 cm) but not larger than 2-1/8 inches (5.4 cm)
in diameter. If you guy the mast, use non-conducting guy wires.
SYSTEM GROUNDING
Direct grounding of the antenna mast is very important. This serves as protection from lightning strikes and static buildup, and from high voltages
which may be present in the equipment attached to the antenna. A good electrical connection should be made to one or more ground rods
directly at the base of the antenna or mast using a least #10 AWG ground wire and non-corrosive hardware. For details and safety standards,
consult the National Electrical Code. You should also use a coaxial lightning arrestor. Cushcraft offers several different models, such as the
LAC-1, LAC-2 or the LAC-4 series.
ASSEMBLY
BA Base assembly 1
BB 1-1/4" x 48" (3.2 x 121.9 cm) aluminum tube slotted 1
one end
BC 1" x 48" (2.5 x 121.9 cm) aluminum tube slotted one end 1
BD 7/8" x 5" (2.2 x 12.7 cm) aluminum tube slotted 1
both ends
BE 7/8" x 16" (2.2 x 40.6 cm) aluminum tube slotted both ends 2
BG 3/4" x 48" (1.9 x 121.9 cm) aluminum tube 1
BH 5/8” x 6-1/2” (1.6 x 16.5 cm) aluminum tube 1
BI 5/8” x 7-3/4” (1.6 x 19.7 cm) aluminum tube 1
CT1 10/12 meter trap assembly 1
CT2 15/17 meter trap assembly 1
CT3 20/30 meter trap assembly 1
XHR 3/16" x 36" (.48 x 91.4 cm) aluminum rod drilled center 2
MN7000 Matching network 1
11 010011 #8-32 SS Hex Nut 3
12 050012 3/4" (1.9 cm) plastic cap 1
20 010220 #10-24 SS Hex Nut 1
26 190026 7/8" (2.22 cm) formed aluminum bracket 2
28 190028 Aluminum halfwasher 2
32 902832 49" (124.5 cm) stainless steel radial rod 7
33 010233 #10 SS Lock Washer 1
41 011941 #8 SS Lock Washer 3
63 170063 2" aluminum V-block 4
73 194173 Radial ring bracket 4
74 194174 Radial ring 2
79 010079 #8-32 x 1/2" (1.3 cm) stainless steel machine screw 4
87 014387 #8 stainless steel/nylon lock nut 22
89 014389 5/16" (.8 cm) stainless steel/nylon lock nut 8
96 010096 #8-32 x 3/8" (.95 cm) stainless steel machine screw 4
115 050115 Connector boot 1
116 240116 Silicone package 1
120 010120 #8-32 x 2" (5.1 cm) stainless steel machine screw 1
160 190160 Matching network upper bracket 1
231 010231 #8-32 x 1-3/4" (4.4 cm) stainless steel machine screw 2
232 010232 #8-32 x 2-1/2" (6.3 cm) stainless steel machine screw 6
326 290326 Warning label 8
404 010404 2-7/16" x 3-1/4" (6.2 x 8.3 cm) stainless steel U-bolt 2
405 010405 2-7/16" x 4-1/2" (6.2 x 11.4 cm) stainless steel U-bolt 2
410 030410 1" (2.5 cm) stainless steel worm clamp 6
411 030411 1-1/4" (3.2 cm) stainless steel worm clamp 1
412 030412 1-1/2" (3.8 cm) stainless steel worm clamp 1
413 030413 1-3/4" (4.4 cm) stainless steel worm clamp 1
428 902428 Jumper strap 1
4079 194079 Aluminum mounting plate 1
#1 - ASSEMBLE AND
ATTACH RADIAL RING
428
87
96
87
96
87
87
79
74
73
79
73
87
87
232
87
87
87
232
232
232
232
232
87
Figures A through D show the steps for radial ring assembly. Refer to
the Radial Ring Subassembly Parts List for the parts required in this
step. Attach the rings(74) to the base using the radial ring brackets (73),
2-1/2" (6.3 cm) screws (232), 1/2" (1.3 cm) screws (79) and lock nuts
(87). Leave hardware loose until Step #2. Note the proper orientation
of the radial ring brackets in Figure A. Install jumper strap (428) as shown
in Figure D.
NOTE: Do not accidentally use the #10-24 nut in this step.
Insert four 2-1/2" (6.3 cm) screws (232) into the base assembly (BA) as
shown in Figure D. Secure with nuts (87).
73 194173 RADIAL RING 4
BRACKET
74 194174 RADIAL RING 2
79 010079 SS MACHINE 8-32 x 1/2" 4
SCREW (1.3 cm)
87 014387 SS/NYLON 8-32 14
LOCK NUT
96 010096 SS MACHINE 8-32 x 3/8" 4
SCREW (.95 cm)
232 010232 SS MACHINE 8-32 x 2-1/2" 6
SCREW 6.35 cm)
428 902428 STRAP 1
KEY P/N DISPLAY DESC SIZE
FIGURE
C
FIGURE
B
FIGURE
D
R7000
73
FIGURE
A
Shorter dimension
attaches to radial
ring.
Longer
dimension
attaches to
base.
73 73
11 010011 SS HEX NUT 8-32 3
41 011941 SS LOCK 8-32 3
WASHER
20 010220 SS HEX NUT 10-24 1
32 902832 SS RADIAL 49" 7
(124.5 cm)
33 010233 SS LOCK 10-24 1
WASHER
87 014387 SS/NYLON 8-32 4
LOCK NUT
120 010120 SS MACHINE 8-32 x 2" 1
SCREW (5.1 cm)
160 190160 MN7000 1
BRACKET
326 290326 WARNING 7
LABEL
MN7000 MATCHING 1
NETWORK
#2 - ATTACH MATCHING
NETWORK AND RADIALS
KEY P/N DISPLAY DESC SIZE
One at a time, place the stainless steel radial rods into the slots
of the radials rings. Tighten the corresponding ring screws as
you work your way around the rings. The radial rings do not
have to touch each other to secure the radial rods properly so
do not overtighten the screws. When all 7 radial rods are secure,
tighten the two screws holding the radial ring brackets to the
base. Attach warning labels (326) as shown in Figure E.
Attach matching network upper bracket (160) to base assembly
(BA) using screws (120) and nuts (87). Attach MN7000 to base
assembly by inserting the two 8-32 mounting screws into the
upper bracket (160) and securing screws with two nuts (11) and
llock washer (41). Place bottom of MN7000 over the 10-24
captive screw and secure with nut (20) and lock washer (33).
Connect braid from radial ring to MN7000 screw as shown using
nuts (11) and lock washer (41).
FIGURE
E
R7000
120
11 11
MN7000
87
28
20
32
32
32
32
326 11
32
326
326
326
326
160
41 41
41
33
X
Y2"
(5 cm)
min.
2"
(5 cm)
min.
5
#3 - ASSEMBLE RADIATOR
12 050012 PLASTIC 3/4" 1
CAP (1.9 cm)
26 190026 ALUMINUM 7/8" 2
BRACKET (2.2 cm)
28 190028 ALUMINUM 2
HALF WASHER
87 014387 SS/NYLON 8-32 2
LOCK NUT
231 010231 SS MACHINE 8-32 x 1-3/4" 2
SCREW (4.4 cm)
410 030410 SS WORM 1" 6
CLAMP (2.5 cm)
411 030411 SS WORM 1-1/4" 1
CLAMP (3.2)
412 030412 SS WORM 1-1/2" 1
CLAMP (3.8 cm)
413 030413 SS WORM 1-3/4" 1
CLAMP (4.4 cm)
BA BASE 1
ASSEMBLY
BB ALUMINUM 1-1/4" x 48 1
TUBE (3.2 x 121.9 cm)
BC ALUMINUM 1" x 48" 1
TUBE (2.5 x 121.9 cm)
BD ALUMINUM 7/8" x 5" 1
TUBE (2.2 x 12.7 cm)
BE ALUMINUM 7/8" x 16" 2
TUBE(2.2 x 40.6cm)
BG ALUMINUM 3/4" x 48" 1
TUBE (1.9 x 121.9)
BH ALUMINUM 5/8” x 6-1/2” 1
TUBE (1.6 X 16.5 cm)
BI ALUMINUM 5/8” x 7-3/4 1
TUBE (1.6 x 19.7 cm)
CT1 10/12 M 1
TRAP
CT2 15/17 M 1
TRAP
CT3 20/30 M 1
TRAP
XHR ALUMINUM 3/16" x 36" 2
ROD (.5 x 91.4 cm)
KEY P/N DISPLAY DESC SIZE
NOTE: When installing BE
tube, ensure at least 2" (5
cm) length of the adjoining
3/4" (1.9 cm) tubes are
inserted into R7000BE
(Figure A, points X and Y).
Place worm clamp (413) over top end of base assembly (BA). Note
Figure G for proper positioning of all worm clamps. Slide section BB
into BA 4 inches and secure worm clamp. Place worm clamp (412)
over slots of section BB. Slide section BC into BB 4 inches and secure
worm clamp. Attach capacity hat rods (XHR) to BC using hardware
shown in Figure G. Place worm clamp (411) over slots of section BC.
Before sliding Trap CT1 into BC, insert tube BH into the bottom tube
of CT1 and BI into the top tube of CT1. The screws holding the XHR
rods will keep tube BH in place. Hold trap assembly CT1 with
BE
FIGURE
F
R7000
87 87
231
231
26
28
37
37
26
28
capped end up and slide bottom tube into section BC until it is stopped by
the XHR mounting screws and secure worm clamp. Place worm clamps
(410) over each end of section BD. Slide BD over CT1 top tube 2" and secure
worm clamp. Hold trap assembly CT2 with capped end up and slide bottom
tube into BD 2" and secure worm clamp. Place worm clamps (410) over
each end of section BE. Slide BE over CT2 top tube 3" and secure worm
clamp. Hold trap assembly CT3 with capped end up and slide bottom tube
into BE 3-1/2". Secure worm clamp. Place worm clamps (410) over each
end of section BE. Slide BE over CT3 top tube 2”(5.08 cm) and secure worm
clamp. Slide BG into BE 2" (5.1 cm) and secure worm clamp. Install cap
(12) . Verify all radiator dimensions to within 1/4" (.6 cm) using Figure F.
Secure hose clamps about
1/4" from top of each slotted
tube to ensure adequate
compression.
FIGURE
G
Dimension A
10 / 12m
135" (342.9 cm)
Dimension B
15 / 17 m
6" (15.2 cm)
Dimension C
(20 / 30m)
18" (45.7 cm)
Dimension D
(40m)
See Chart A
410
BG
12
410
BE
CT3
CT2
CT1
BD
BE
410
410
410
410
411
BC
412
BB
413
BA
Dimension D Center Frequency
(in) (cm) (MHz)
53 134.5 7.300
54 137 7.275
56 142 7.225
58 147 7.175
60 152.5 7.125
62 157.5 7.075
64 162.5 7.025
65 165 7.000
Chart A
BH
BI
#5 - FEEDLINE
The R7000 is designed for use with 50 Ohm coaxial cable terminated
with a PL-259 connector. The shortest length of cable will have the
least loss. A connector boot is included for use with your new antenna
(figure I). Slide the boot over the cable before attaching your PL-259.
Coat only the outside connector threads and shell with silicone grease.
Do not coat the center pin or receptacle. After the PL-259 is firmly
screwed onto the antenna connector, slide the vinyl boot over the
connector and against the connector bracket for a good weather-tight
connection. After the antenna is on the mast, tape the feedline to the
mast. If you plan to install the antenna in a salty or corrosive environment,
you may want to consider coating it with a clear marine varnish or
equivalent after it is assembled. For final tuning see page 1.
KEY PART# DESCRIPTION SIZE QTY
115 050115 CONNECTOR 1
BOOT
116 240116 SILICONE 1
PACKAGE
SILICONE GREASE
cushcraft
#4 - BASE TO MAST ASSEMBLY
KEY P/N DISPLAY DESC SIZE
63 170063 V-BLOCK 2" 4
(5.1 cm)
89 014389 SS/NYLON 5/16" 8
LOCK NUT (.8 cm)
404 010404 U-BOLT 2-7/16 x 3-1/4" 2
(6.2 x 8.2 cm)
405 010405 U-BOLT 2-7/16" x 4-1/2" 2
(6.2 x 11.4 cm)
4079 194079 MOUNTING 1
PLATE
326 290326 WARNING 1
LABEL
89
405
404
405
89
119
89
89
63
63
63
63
89
89
4079
326
Attach the antenna base to your mast as shown in Figure H. First attach
the mounting plate (4079) with U-bolts (404), aluminum V-blocks (63),
and nut (89) to the antenna base. The bottom of the plate should should
be even with the bottom of the antenna to leave room for the radial
clamping system. Affix danger label (326) to the antenna so that is easy
to see. When attaching mounting plate to the mast use the (405) U-
bolts, aluminum V-blocks (63), and nut (89).
404
115
FIGURE
I
FIGURE H
SILICONE
(116)
DO NOT COAT
CENTER PIN
WITH SILICONE!
SILICONE GREASE
cushcraft
R7000
Line bottom
of plate up
with bottom
of antenna.
LIMITED WARRANTY
Cushcraft Corporation, P.O. Box 4680, Manchester, New Hampshire 03108, warrants to the original purchaser for one year
from date of purchase that each Cushcraft antenna is free of defects in material or workmanship. If, in the judgement of
Cushcraft, any such antenna is defective, then Cushcraft Corporation will, at its option, repair or replace the antenna at
its expense within thirty days of the date the antenna is returned (at purchasers expense) to Cushcraft or one of its
authorized representatives. This warranty is in lieu of all other expressed warranties, any implied warranty is limited in
duration to one year. Cushcraft Corporation shall not be liable for any incidental or consequential damages which may
result from a defect. Some states do not allow limitations on how long an implied warranty lasts or exclusions or limitations
of incidental or consequential damages, so the above limitation and exclusion may not apply to you. This warranty gives
you specific legal rights, and you may also have other rights which vary from state to state. This warranty does not extend
to any products which have been subject the misuse, neglect, accident or improper installation. Any repairs or alterations
outside of the Cushcraft factory will nullify this warranty.
48 PERIMETER ROAD, MANCHESTER, NH 03108 USA
TELEPHONE: 603-627-7877 • FAX: 603-627-1764 • E-mail: techsup@cushcraft.com
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
COMMUNICATIONS ANTENNAS
Frequency Coverage, meters 10, 12, 15, 17, 20, 30, 40
Gain, dBi 3
Electrical Wavelength each band Half-wave
VSWR 1.2:1 Typical
2:1 Bandwidth (KHz) 10m (1700), 12m (100), 15m (450), 17m (100)
20m (250), 30m (100), 40m (150)
Power Rating, Watts PEP 1500
Radiation Angle, degrees 16
Horizontal Radiation Pattern, degrees 360
Height, ft (m) 24 (7.31m)
Mast Size Range, in (cm) 1.75-2.125 (4.4-5.4 cm)
Wind Load, ft2 (m2) 2 (.2)
Weight, lb (kg) 18 (8.2)
SPECIFICATIONS
