R7000 Manual Singles CUSHCRAFT R 7000 INSTALLATION

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ASSEMBLY AND
INSTALLATION INSTRUCTIONS

R7000
10, 12, 15, 17, 20, 30, 40 Meters

COMMUNICATIONS ANTENNAS

951465 (5/99)

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.

R7000

MASTER PARTS LIST
KEY
BA
BB

PART#

BC
BD
BE
BG
BH
BI
CT1
CT2
CT3
XHR
MN7000
11
010011
12
050012
20
010220
26
190026
28
190028
32
902832
33
010233
41
011941

DESCRIPTION
QTY
Base assembly
1
1-1/4" x 48" (3.2 x 121.9 cm) aluminum tube slotted
1
one end
1" x 48" (2.5 x 121.9 cm) aluminum tube slotted one end 1
7/8" x 5" (2.2 x 12.7 cm) aluminum tube slotted
1
both ends
7/8" x 16" (2.2 x 40.6 cm) aluminum tube slotted both ends 2
3/4" x 48" (1.9 x 121.9 cm) aluminum tube
1
5/8” x 6-1/2” (1.6 x 16.5 cm) aluminum tube
1
5/8” x 7-3/4” (1.6 x 19.7 cm) aluminum tube
1
10/12 meter trap assembly
1
15/17 meter trap assembly
1
20/30 meter trap assembly
1
3/16" x 36" (.48 x 91.4 cm) aluminum rod drilled center
2
Matching network
1
#8-32 SS Hex Nut
3
3/4" (1.9 cm) plastic cap
1
#10-24 SS Hex Nut
1
7/8" (2.22 cm) formed aluminum bracket
2
Aluminum halfwasher
2
49" (124.5 cm) stainless steel radial rod
7
#10 SS Lock Washer
1
#8 SS Lock Washer
3

KEY PART#
63
170063
73
194173
74
194174
79
010079
87
014387
89
014389
96
010096
115
050115
116
240116
120
010120
160
190160
231
010231
232
010232
326
290326
404
010404
405
010405
410
030410
411
030411
412
030412
413
030413
428
902428
4079 194079

DESCRIPTION
2" aluminum V-block
Radial ring bracket
Radial ring
#8-32 x 1/2" (1.3 cm) stainless steel machine screw
#8 stainless steel/nylon lock nut
5/16" (.8 cm) stainless steel/nylon lock nut
#8-32 x 3/8" (.95 cm) stainless steel machine screw
Connector boot
Silicone package
#8-32 x 2" (5.1 cm) stainless steel machine screw
Matching network upper bracket
#8-32 x 1-3/4" (4.4 cm) stainless steel machine screw
#8-32 x 2-1/2" (6.3 cm) stainless steel machine screw
Warning label
2-7/16" x 3-1/4" (6.2 x 8.3 cm) stainless steel U-bolt
2-7/16" x 4-1/2" (6.2 x 11.4 cm) stainless steel U-bolt
1" (2.5 cm) stainless steel worm clamp
1-1/4" (3.2 cm) stainless steel worm clamp
1-1/2" (3.8 cm) stainless steel worm clamp
1-3/4" (4.4 cm) stainless steel worm clamp
Jumper strap
Aluminum mounting plate

QTY
4
4
2
4
22
8
4
1
1
1
1
2
6
8
2
2
6
1
1
1
1
1

R7000

#1 - ASSEMBLE AND
ATTACH RADIAL RING

Shorter dimension
attaches to radial
ring.

FIGURE
A

Longer
dimension
attaches to
base.

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.

79
73

Insert four 2-1/2" (6.3 cm) screws (232) into the base assembly (BA) as
shown in Figure D. Secure with nuts (87).

79
428

FIGURE
B

KEY

73
87

P/N

DISPLAY

DESC

SIZE

194173

RADIAL RING
BRACKET

194174

RADIAL RING

010079

SS MACHINE
SCREW

8-32 x 1/2"
(1.3 cm)

014387

SS/NYLON
LOCK NUT

8-32

010096

SS MACHINE
SCREW

8-32 x 3/8"
(.95 cm)

232

010232

SS MACHINE
SCREW

8-32 x 2-1/2"
6.35 cm)

428

902428

STRAP

FIGURE
C
87

232

FIGURE
D
232

87
87

232

87
87

R7000

#2 - ATTACH MATCHING
NETWORK AND RADIALS

KEY

P/N

010011

SS HEX NUT

8-32

011941

SS LOCK
WASHER

8-32

010220

SS HEX NUT

10-24

902832

SS RADIAL

49"
(124.5 cm)

010233

SS LOCK
WASHER

10-24

014387

SS/NYLON
LOCK NUT

8-32

120

010120

SS MACHINE
SCREW

8-32 x 2"
(5.1 cm)

160

190160

MN7000
BRACKET

326

290326

WARNING
LABEL

MN7000

MATCHING
NETWORK

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

DISPLAY

120

DESC

11
41

SIZE

11
41
160

MN7000
28
326

32
326

32
33
326

20
11
326

326

R7000
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.

#3 - ASSEMBLE RADIATOR
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

12
KEY

DESC

SIZE

050012

PLASTIC
CAP

3/4"
(1.9 cm)

190026

ALUMINUM
BRACKET

7/8"
(2.2 cm)

P/N

DISPLAY

190028

ALUMINUM
HALF WASHER
SS/NYLON
LOCK NUT

8-32

231

010231

SS MACHINE
SCREW

8-32 x 1-3/4"
(4.4 cm)

030410

410

014387

SS WORM
CLAMP

1"
(2.5 cm)

411

030411

SS WORM
CLAMP

1-1/4"
(3.2)

412

030412

SS WORM
CLAMP

1-1/2"
(3.8 cm)

413

030413

SS WORM
CLAMP

1-3/4"
(4.4 cm)

Dimension D
(40m)
See Chart A

Chart A
Dimension D

410

Center Frequency

(in)

(cm)

(MHz)

134.5

7.300

410

137

7.275

142

7.225

147

7.175

152.5

7.125

157.5

7.075

162.5

7.025

165

7.000

CT3

410

Dimension C
(20 / 30m)
18" (45.7 cm)

BASE
ASSEMBLY

ALUMINUM
TUBE

1-1/4" x 48
(3.2 x 121.9 cm)

ALUMINUM
TUBE

1" x 48"
(2.5 x 121.9 cm)

410

(5 cm)

min.

CT2

BE
Y

7/8" x 5"
(2.2 x 12.7 cm)

(5 cm)

min.

ALUMINUM
TUBE

ALUMINUM

ALUMINUM
TUBE

3/4" x 48"
(1.9 x 121.9)

ALUMINUM
TUBE

5/8” x 6-1/2”
(1.6 X 16.5 cm)

ALUMINUM
TUBE

5/8” x 7-3/4
(1.6 x 19.7 cm)

410
BD

CT2

15/17 M
TRAP

CT3

20/30 M

411

BB
2

413

Secure hose clamps about
1/4" from top of each slotted
tube to ensure adequate
compression.

37
26
28

231
28
231

412

TRAP
3/16" x 36"
(.5 x 91.4 cm)

CT1

10/12 M
TRAP

ALUMINUM
ROD

Dimension B
15 / 17 m
6" (15.2 cm)

410

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).

7/8" x 16"
2
TUBE(2.2 x 40.6cm)

CT1

XHR

FIGURE
F

FIGURE
G
5

Dimension A
10 / 12m
135" (342.9 cm)

R7000

#4 - BASE TO MAST ASSEMBLY
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) Ubolts, aluminum V-blocks (63), and nut (89).

404

FIGURE H
63

KEY

P/N

DESC

SIZE

170063

DISPLAY

V-BLOCK

2"
(5.1 cm)

014389

SS/NYLON
LOCK NUT

5/16"
(.8 cm)

404

010404

U-BOLT

2-7/16 x 3-1/4"
(6.2 x 8.2 cm)

405

010405

U-BOLT

2-7/16" x 4-1/2"
(6.2 x 11.4 cm)

4079

194079

MOUNTING
PLATE

WARNING
LABEL

89
89
63

326
404

405
89
63

326

290326

119
405

89
4079
89

Line bottom
of plate up
with bottom
of antenna.

#5 - FEEDLINE

KEY

PART#

DESCRIPTION

115

050115

CONNECTOR
BOOT

116

240116

SILICONE
PACKAGE

cushcraft

SILICONE GREASE

SIZE

QTY

SILICONE
(116)
SILICONE GREASE

115

cushcraft

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.

DO NOT COAT
CENTER PIN
WITH SILICONE!

FIGURE
I

SPECIFICATIONS
Frequency Coverage, meters
Gain, dBi
Electrical Wavelength each band
VSWR 1.2:1 Typical
2:1 Bandwidth (KHz)
Power Rating, Watts PEP
Radiation Angle, degrees
Horizontal Radiation Pattern, degrees
Height, ft (m)
Mast Size Range, in (cm)
Wind Load, ft2 (m2)
Weight, lb (kg)

10, 12, 15, 17, 20, 30, 40
3
Half-wave
10m (1700), 12m (100), 15m (450), 17m (100)
20m (250), 30m (100), 40m (150)
1500
16
360
24 (7.31m)
1.75-2.125 (4.4-5.4 cm)
2 (.2)
18 (8.2)

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.

COMMUNICATIONS ANTENNAS

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

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Title                           : R7000 manual singles

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R7000 Manual Singles CUSHCRAFT R 7000 INSTALLATION

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