CUSHCRAFT R8 User Manual

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951489 (12/99)

6,10, 12, 15, 17, 20, 30, 40, Meters

ASSEMBLY AND INSTALLATION

INSTRUCTIONS

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 R8 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 R8 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.

EXTREME CARE MUST BE USED FOR YOUR SAFETY. YOU MUST INSURE THAT WHILE THE R8

IS IN OPERATION NEITHER PEOPLE NOR 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 E.

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 nonconducting 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 noncorrosive 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 R8 by following steps 1 through 12. After assembling the antenna, verify all dimensions

for accuracy.

MASTER PARTS LIST

BA Base assembly 1

BB R8 Tube BB 1-1/4” x 72”( 3.17 x 182.9cm) 1

BC R8 Tube BC 1-1/8” x 72”(2.9 x 182.9cm) 1

BD R8 Tube BD 1” x 36” (2.5 x 91cm) 1

BE R8 Tube BE 7/8” x 16” (2.3 x 40.5cm) 1

BF R8 Tube BF 7/8” Swedged x 10-3/4” (2.3 x 27.3cm) 1

BG R8 Tube BG 1/2” x 24” (1.2 x 61cm) 1

BH R8 Tube BH 3/8” x 24” (0.9 x 61cm) 1

SA R8 Stub SA 3/8” x 52” (0.9 x 132cm) 1

SB R8 Stub SB 1/4” x 6” (0.6 x 15cm) 6

SC R8 Stub SC 3/8” x 48” (0.9 x 121.9cm) 1

SD R8 Stub SD 1/4” x 48” (0.6 x 121.9cm) 1

SE R8 Stub SE 1/4” x 12” (0.6 x 30cm) 1

SF R8 Stub SF 3/8” x 72” (0.9 x 182.8cm) 2

SG R8 Stub SG 3/8” x 43-1/2” (0.9 x 110.5cm) 1

SH R8 Stub SH 3/8” x 68” (0.9 x 173cm) 1

BT1 BT1 Trap 17 / 20 Meter 1

BT2 BT2 Trap 30 Meter 1

MN8 R8 Matching Network 1

XHR32 32” X-Hat Rod 2

XHR40 40” X-Hat Rod 2

09 010009 # 8-32 x 5/8” SS RH MS 12

11 010011 # 8-32 SS Hex Nut 18

26 190026 Aluminum Bracket 4

28 190028 Aluminum Half Washer 4

32 902832 49” Whip & Tip Assembly 7

63 170063 Extruded Aluminum V-Block 4

64 014764 # 8-32 x 2-1/4” SS Machine Screw 2

73 194173 Radial Ring Bracket 4

74 194174 Radial Ring 2

76 054276 3/8” x 7/8” Black plastic Cap 1

87 014387 # 8-32 x SS/Nylon Hex Nut 21

96 010096 # 8-32 x 3/8” SS RH MS 4

99 205099 Aluminum Stub Clamp 2

105 055105 1/4” Black Plastic Cap 4

115 050115 Connector Boot 1

116 240116 Silicone Package 1

120 010120 # 8-32 x 2” SS RH MS 1

160 190160 Matching Network Bracket 1

220 010220 # 10-24 SS Hex Nut 1

231 010231 # 8-32 x 1-3/4” SS RH MS 7

232 010232 # 8-32 x 2-1/2” SS RH MS 6

233 010233 # 10 SS Split Lock Washer 1

326 290326 Danger Label 8

389 014389 5/16-18 SS/Nylon Hex Nut 8

404 010404 U-Bolt SS 5/16-18 3-1/4 (2-7/16 C-C) 2

405 010405 U-bolt SS 5/16-18 4-1/2 (2-7/16 C-C) 2

407 030407 Worm Clamp SS 7/32” - 5/8” 10

409 030409 Worm Clamp SS 3/8” - 7/8” 2

410 030410 Worm Clamp SS 7/16” - 1” 3

411 030411 Worm Clamp SS 9/16” - 1-1/4” 2

412 030412 Worm Clamp SS 11/16” - 1-1/2” 1

413 030413 Worm Clamp SS 3/4” - 1-3/4” 1

428 902428 Ground Strap 1

657 194657 Aluminum L Bracket 6

940 360940 # 8 Aluminum Flat Washer 12

941 011941 # 8 SS Split Lock Washer 18

4079 194079 Aluminum Mounting Plate 1

5072 205072 4-Hole Insulator 1

5096 205096 3-Hole Insulator 1

5097 205097 2-Hole Insulator 1

KEY PART# DESCRIPTION QTY

#1 - ASSEMBLE RADIAL

RINGS

232

428

232

FIGURE

73 73

Figures A through D show the steps for radial ring assembly. Refer

to the parts table below for the parts required in this step. Slide

the two radial rings (74) onto the base assembly (BA). Note the

orientation of the ring slots. Attach the rings to the base using the

radial ring brackets (73), 2 1/2" screws (232), 1/2" 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

ground strap (428) as shown in Figure D.

NOTE: Do not accidentally use the #10-24 nut in

this step.

Insert four 2 1/2" screws (232) into the base assembly (BA) as

shown in Figure D. Secure with nuts (87).

73 194173 RADIAL RING 4

96 010096 SS MACHINE #8-32 x 3/8” 4

SCREW (.95 cm)

BA BASE 1

ASSEMBLY

BRACKET

74 194174 RADIAL RING 2

79 010079 SS MACHINE # 8-32 x 1/2 4

SCREW (1.3 cm)

87 014387 SS LOCK # 8-32 14

NUT

232 010232 SS MACHINE # 8-32 x 2-1/2" 6

SCREW (6.35 cm)

428 902428 GROUND STRAP 1

KEY P/N DISPLAY DESC SIZE QTY

Longer dimension

attaches to base.

Shorter

dimension

attaches to

radial ring.

32 902832 SS RADIAL 49" 7

(124.5 cm)

BRACKET

87 014387 SS LOCK #8-32 4

NUT

326 290326 WARNING 7

LABEL

MN MN8 MATCHING 1

NETWORK

#2 - ATTACH MATCHING

NETWORK AND RADIALS

KEY P/N DISPLAY DESC SIZE QTY

FIGURE E

190160160

220 010220 SS HEX NUT #10-24 1

233 010233 SS SPLIT #10 1

LOCK WASHER

941 011941 SS SPLIT #8 3

LOCK WASHER

11 010011 SS HEX NUT #8-32 3

11 11

MN8

220

326 11

326

160

120 87

941

233

MN8

Slide upper matching network bracket (160) onto base section

(BA). Place it tight against the fiberglass insulator. Insert one

2" screw (120) into bracket (160) and attach nut (87) as

shown in Figure E. Slide Matching Network screws into holes

on upper matching network bracket (160). Position bottom MN

bracket over captive screw in base section (BA) and secure

with #10 nut (220) and a #10 lock washer (233).

Secure MN to upper MN bracket (160) with two nuts (11) and

lock washer (941). Tighten screw in upper MN bracket (160).

The radial rods may be inserted into the base section at any

time in the assembly process.

One at a time, place the stainless radial rods (32) into the

slots in the radial 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.

Do not overtighten the screws. When all rods are secure,

tighten all hardware on the base section. Attach jumper strap

(428) to MN screw with nut (11) and lock washer (941).

Attach warning labels (326) as shown.

120 010120 SS MACHINE # 8-32 x 2” 1

SCREW (5.1 cm)

4 PLACES

941

4 PLACES

#3 - ASSEMBLE PLASTIC

SPACERS TO RADIAL RINGS

09 010009 SS Machine # 8-32 x 5/8” 12

Screw (1.6 cm

11 010011 SS HEX NUT 8-32 15

941 011941 SS Split Lock # 8 15

Washer

231 010231 SS Machine 8-32 x 1-3/4” 3

Screw (4.45 cm)

657 194657 Aluminum 6

L Bracket

940 360940 Aluminum # 8 12

Flat Washer

BB R8BB R8 Tube 1-1/4” x 72” 1

(3.2 x 182.9 cm)

BC R8BC R8 Tube 1-1/8” x 72” 1

(2.9 x 182.9 cm)

5072 205072 4-Hole 1

Insulator

5096 205096 3-Hole 1

Insulator

5097 205097 2-Hole 1

Insulator

KEY P/N DISPLAY DESC SIZE QTY

657

2 PLACES

941

11 231

4 PLACES

940

4 PLACES

5072

4 PLACES

231

941

657

2 PLACES

657

2 PLACES

5096

5097

4 PLACES

940

4 PLACES

940

4 PLACES

941

4 PLACES

941

4 PLACES

941

Place the aluminum L-brackets (657) on tube (BB) and secure them

with hardware (231,941&11). Repeat this as well on tube (BC) as

shown on Fig. "F". Slide the 4-hole insulator (5072) on tube (BB)

and secure it with applicable hardware ( 09, 940,941 & 11). Repeat

the same with two and three hole insulators (5096 & 5097) on

tube (BC) according the Fig. "F".

NOTE: Make sure that the tubes are oriented with the slotted ends

on the top when you start assembling the hardware onto them.

FIGURE F

413

411

412

4-1/2”

INSERT

(11.4 cm)

8”

INSERT

#4 - ASSEMBLE RADIATOR TUBES

BA BASE 1

ASSEMBLY

BB R8 TUBE BB 1-1/4” x 72” 1

(3.17 x 182.9 cm)

BC R8 TUBE BC 1-1/8” x 72” 1

(2.9 x 182.9 cm)

BD R8 TUBE BD 1” x 36” 1

(2.5 x 91 cm)

411 030411 SS WORM 9/16” x 1-1/4” 1

CLAMP (1.4 x 3.1 cm)

412 030412 SS WORM 11/16” x 1-1/2” 1

CLAMP (0.7 x 3.8 cm)

413 030413 SS WORM 3/4” x 1-3/4” 1

CLAMP (1.9 x 4.4 cm)

KEY P/N DISPLAY DESC SIZE QTY

Slide the Tube BD into tube BC until it hits the inner tube, and secure it

with worm clamp (411). Slide this assembly into tube BB and secure it

with worm clamp (412). Make sure that plastic insulators are aligned as

shown in Fig. "G".

Insert assembly consisted of tubes BD, BC and BB 4 -1/2 " into base

assembly (BA) and secure it with worm clamp (413).We recommend

that you use workhorses or two chairs to place this assembly in a horizontal

position . You may or may not attach the stainless radial rods (32) to the

base assembly (BA) at this time as mentioned in Section #2 of this

manual.

FIGURE G

15-3/8”

(39.1 cm)

LOWER BRACKET

SITS FLUSH ON

BASE ASSEMBLY

87 64

#5 - ASSEMBLE METAL

CLAMPS ON TO RADIATOR

As the antenna radiator sits on workhorses or pair of chairs place the

aluminum stub clamps (99) on radiator according the Fig. "H". Make

sure the clamps are aligned as shown. Leave the hardware on clamps

(64, 87) slightly loose to allow you insert the stub tubes later.

FIGURE H

64 014764 SS MACHINE #8-32 x 2-1/4” 4

SCREW (5.7 cm)

87 014387 SS NYLON #8-32 4

HEX NUT

99 205099 ALUMINUM 2

STUB CLAMP

KEY P/N DISPLAY DESC SIZE QTY

#6 - ASSEMBLY OF 6 AND

10 METERS STUBS

SA R8SA R8 Stub SA 3/8” x 52” 1

(1 x 132 cm)

SB R8SB R8 Stub SB 1/4” x 6” 2

(0.6 x 15 cm)

SC R8SC R8 Stub SC 3/8” x 48” 1

(1 x 121.9 cm)

SD R8SD R8 Stub SD 3/8” x 48” 1

(1 x121.9 cm)

SE R8SE R8 Stub SE 1/4” x 12” 1

(.6 x 30.5 cm)

105 055105 Black Plastic Cap 1/4” 2

(.6 cm)

407 030407 SS Worm Clamp 7/32”-5/8” 4

(.6 x 1.6 cm)

KEY P/N DISPLAY DESC SIZE QTY

Take the (SA) tube and slide it through the 4-hole insulator and secure

it in the bottom aluminum stub clamp as shown in Fig. "I". Make sure

that the slotted end of (SA) tube protrudes beyond the 4-hole insulator

and the opposite end of (SA) tube is mounted flush with the bottom

of the stub clamp (see callout at bottom of Fig I). In same fashion

slide the tube (SC) and secure it on other side of bottom aluminum

stub clamp. Align the bottom stub clamp with plastic insulators and

secure it tight. Slide the 6" rod (SB) into tube (SA) and secure with

worm clamp (407). Use 6 Meter tuning chart to adjust the stub (SB)

for selected portion of the band. Place the protective plastic cap on

top of (SB) tuning rod to complete the 6 Meter stub.

Take another 6" rod (SB) and slide it 3" into tube (SC) and secure with

worm clamp (407) as shown in callout of Fig. "I". Slide the tube (SD)

through 3-hole plastic insulator and assemble with worm clamp (407)

over other end of rod (SB). Insert rod ( SE) into tube (SD) as shown

,and complete the 10 Meter stub by placing the protective plastic cap

on top.

FIGURE I

Frequency (MHz) Length

50.250 4-1/2” (11.4 cm)

50.800 3-1/2” (8.9 cm)

51.500 2-1/2” (6.4 cm)

52.500 1-1/2” (13.8 cm)

53. 500 1/2” (1.3 cm)

6 Meter Tune Chart

3” (7.6 cm)

INSERT

3” (7.6 cm)

INSERT

10” (25.4 cm)

EXPOSED

SEE 6 METER

TUNE CHART

105

407

105

407

Stubs sit flush with bottom of

stub clamp.

NOTE:

#7 - ASSEMBLY OF 12 AND

15 METERS STUBS

KEY P/N DISPLAY DESC SIZE QTY

3” (7.6 cm)

INSERT

SB R8SB R8 STUB SB 1/4” x 6” 4

(.6 x 15 cm)

105 055105 BLACK PLASTIC 1/4” 2

CAP (.6 cm)

407 030407 SS WORM 7/32”-5/8” 6

CLAMP (1.2 x 1.6 cm)

SF R8SF R8 STUB SF 3/8” x 72” 2

(1 x 182.9 cm)

SH R8SH R8 STUB SH 3/8” x 68” 1

(1 x173 cm)

SG R8SG R8 STUB SG 3/8” x 43-1/2” 1

(1 x110.5 cm)

3” (7.6 cm)

INSERT

407 407

Take two tubes (SF) and slide them through 4-hole plastic insulator

and secure in top stub clamp as shown in Fig. J1. Insert two

6"rods (SB) in (SF) tubes and place the worm clamps (407) as

shown in callout at Fig. J2. Place tube (SH) on left side stub as

shown in Fig. J2, sliding it through 2 and 3 hole plastic insulators.

Insert tube (SG) on the right side stub as shown and secure with

worm clamp. Take two (SB) rods and insert them on top of these

two stubs as shown in top callouts of Fig. J2 along with protective

end caps.

Note: Make sure that all stubs are positioned around main radiator

as shown in Fig. J2

FIGURE J1

FIGURE J2

3-1/2” (8.9 cm)

EXPOSED

3” (7.6 cm)

INSERT

3” (7.6 cm)

INSERT

3-1/2” (8.9 cm)

EXPOSED

105

SB SB

407 407

SF SF

#8 - ASEEMBLE X-HAT ON

BD TUBE

Install 2 X hat rods (XHR40) as shown in figure K, using aluminum

bracket, (26), aluminum half washers (28), and fasten with screw

(231) and lock nut (87).

FIGURE K

KEY P/N DISPLAY DESC SIZE QTY

XHR40 XHR40 X-Hat Rod 40” (101.6 cm) 2

26 190026 Aluminum 2

Bracket

28 190028 Aluminum 2

Half Washer

87 014387 SS Nylon # 8-32 2

Hex Nut

231 010231 SS RH #8-32 x 1-3/4” 2

Machine Screw (4.4 cm)

87 87

231

XRH40

#9 - ASSEMBLE TRAPS

#10 - ASSEMBLE TOP RADIATOR WITH X-HAT

18”

(45.7 cm)

BT2

BT1

410

411

BT1 BT1 TRAP 1

17/20 METER

BT2 BT2 TRAP 1

30 METER

BE R8 TUBE 7/8” x 16” 1

BE (2.3 x 41 cm)

410 030410 SS WORM 7/16”-1” 2

CLAMP (1.1 x 2.5cm)

411 030411 SS WORM 9/16” x 1-1/4” 1

CLAMP (1.4 x 3.2 cm)

KEY P/N DISPLAY DESC SIZE QTY

SEE 40 METER

TUNE CHART

22”

(55.4 cm)

XHR32 XHR32 X-HAT ROD 32” (81 cm) 2

26 190026 ALUMINUM 2

BRACKET

28 190028 ALUMINUM 2

Half Washer

76 054276 END CAP 3/8” 1

( 0.9 cm)

87 014387 SS NYLON # 8-32 2

HEX NUT

231 010231 SS RH # 8-32 x 1-3/4” 2

MACHINE SCREW (4.4 cm)

409 030409 SS WORM 3/8”-7/8” 1

CLAMP (0.9 x 2.2 cm)

410 030410 SS WORM 7/16”-1” 1

CLAMP (1.1 x 2.5 cm)

BG R8BG R8 TUBE BG 1/2” x 24” 1

(1.3 x 61 cm)

BH R8BH R8 TUBE BH 3/8” x 24” 1

(0.9 x 61 cm)

KEY P/N DISPLAY DESC SIZE QTY

XHR32

87 87

231

XHR32

1”

(2.5 cm)

409

410

BT2

Assemble traps (BT1) and (BT2) as shown in callout of Fig."L". Slide

this assembly into top tube (BD) of main radiator assembly until it hits

the screws of X-hat assembly and secure it with worm clamp (411).

Take the tube (BG) and insert 2" into swedged tube (BF). Secure assembly

with worm clamp (409). Slide tube (BH) into tube (BG) and adjust for

selected portion of 40 Meters band according the 40 Meter Tuning chart.

Install X-hats (XHR32) on swedged tube (BF) as shown in callout of

Fig."M". Take this assembly and slide it over top trap (BT2) spacing the

edge of (BF) 1" of the trap cap.

FIGURE L

FIGURE M

Frequency (MHz) Length (In) (cm)

7.025 20” (50.8)

7.050 18.5” (47.0)

7.100 16” (40.6)

7.150 13” (33.0)

Frequency (MHz) Length (In) (cm)

7.200 10” (23.4)

7.250 7” (17.8)

7.300 5” (12.7)

40 Meter Tune Chart

Figure N

Figure O

#11 -BASE TO MAST ASSEMBLY

KEY P/N DISPLAY DESC SIZE QTY

63 170063 V-BLOCK 2" 4

(5.1 cm)

389 014389 SS/NYLON 5/16" 8

LOCK NUT (.8 cm)

404 010404 U-BOLT 5/16-18 x 3-1/4" 2

(6.2 x 8.2 cm)

405 010405 U-BOLT 5/16-18 x 4-1/2" 2

(6.2 x 11.4 cm)

4079 194079 MOUNTING 1

PLATE

326 290326 WARNING 1

LABEL

389

405

404

405

389

119

389

4079

326

Attach the antenna base to your mast as shown in Figure N. First attach

the mounting plate (4079) with U-bolts (404), aluminum V-blocks (63), and

nut (389) 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 (389). 404

Line bottom

of plate up

with bottom

of antenna.

#12 - FEEDLINE

The R8 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 O).

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.

KEY PART# DESCRIPTION SIZE QTY

115 050115 CONNECTOR 1

BOOT

116 240116 SILICONE 1

PACKAGE

SILICONE GREASE

cushcraft

115

SILICONE

(116)

DO NOT COAT

CENTER PIN

WITH SILICONE!

SILICONE GREASE

cushcraft

LIMITED WARRANTY

Cushcraft Corporation, 48 Perimeter Road, Manchester, New Hampshire 03103, 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 03103 USA

TELEPHONE: 603-627-7877 • FAX: 603-627-1764 • E-mail: techsup@cushcraft.com

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

The Electrical Specifications for all Cushcraft Amateur Antennas are derived from numerical

analysis and measured data taken on our test range. Performance may vary due to the random

variables associated with a specific application or installation.

Frequency, meters 6,10,12,15,17,20,30,40

Gain, dBi 3

VSWR 2:1 bandwidth, KHz 40m (150)

30m (>50)

20m (>350)

17m (>100)

15m (>450)

12m (>100)

10m (>1500)

6m (>1500)

VSWR at resonance (typical) 1.3:1

Power Rating, Watts CW 1500

Vertical Radiation angle, deg. 16

Horizontal rad, deg. 360

Height, ft(m) 28.5 max. (8.7)

Wind survival 80 mph

Weight, lb. (kg) 23 (10.5)

R8 SPECIFICATIONS

CUSHCRAFT R8 User Manual

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