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SPECIFICATIONS

Model

A4S

Frequency Ranges

28, 21, 14

Forward Gain, dBd

8.9

Front to Back Ratio, dB

25

2:1 Bandwidth KHz

>500

Power Rating, Watts PEP

2000

3 dB Beam Width, Deg. E Plane

58

Boom Length

18(5.48)

Boom Diameter, In (cm)

2 (5.10)

Longest Element, ft (m)

32 (9.75)

Element Center Dia, In (cm)

1.25 (3.18)

Turning Radius, ft (m)

18.4 (5.49)

Mast Size Range, In (cm)

1.25-2 (3.18-5.08)

Wind Load, ft

2

 

 (m

2

)

5.50 (0.51)

Weight, lb (kg)

37 (16.8)

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 warrranty is in lieu of all other expressed warranties, any implied warranty is limited in
duration to one year.  Cushcraft Corporation shall not be liablefor 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 nulify this warranty.

48 PERIMETER ROAD, MANCHESTER, NH 03108 USA

TELEPHONE: 603-627-7877 • FAX: 603-627-1764 • E-mail: [email protected]

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

C   O   R   P   O   R   A   T   I   O   N

Summary of Contents for A4S

Page 1: ...A4S 20 15 10 MeterBeam ASSEMBLY AND INSTALLATION INSTRUCTIONS 951279 8 98 C O R P O R A T I O N ...

Page 2: ...non corrosive hardware For details and safety standards consult the National Electrical Code You should also use a coaxial lightning arrester Cushcraft offers several different models such as LAC 1 LAC 2 and the LAC 4 series ASSEMBLY Assemble your antenna by following the directions and illustrations in steps 1 through 5 After the antenna is completely assembled verify dimensions and element spaci...

Page 3: ...4 2 5 x 61 0 cm slotted 2 one end EP Aluminum tubing 1 2 x 48 1 3 x 121 9 cm 2 1 BOOM ASSEMBLY A4S 2 FIGURE A KEY PART QTY TB 15 meter director trap 2 TC 15 meter driv refl trap 4 TD 10 meter driv trap 2 TE 10 meter director trap 2 11 010011 8 32 hex nut 6 27 050027 5 8 Black plastic cap 2 41 011941 8 Split lock washer 6 53 050053 1 2 Black plastic caps 6 63 170063 2 1 2 Machined aluminum V blocks...

Page 4: ...tor at its center which is joined to tubes EB with a worm clamp 411 and pinning screws 123 as shown in Figure C Set dimensions to the desired band using Chart 1 and Chart 2 Tighten all clamps 4 2 Element Assembly KEY P N DISPLAY DESC SIZE QTY TD TB TC TE D4 EG 410 EE EA 411 410 TE TB 409 53 A4 410 C4 EF B4 EG 410 EE 411 410 TE TB 409 53 A4 410 C4 EF B4 D1 TC C1 EP 409 53 EL EK 412 B1 411 410 412 E...

Page 5: ...he ground so that moisture will not build up in the traps 3 ELEMENT MOUNTING 5 118 010118 SS HEX 5 16 8 NUT 8 cm 119 010119 SS LOCK 5 16 8 WASHER 8 cm 156 190156 ALUMINUM 2 X 1 1 8 4 BRACKET 5 08 X 2 86 cm 405 010405 U BOLT 2 1 8 x 4 4 5 4 x 10 2cm 76 194 3 cm 94 240 0 cm TE TB TE TB TC TC 1 2 40 102 8 cm 1 2 1 2 TD TC TD TC 108 2 73m FIGURE D A4S 2 5 1 cm Important Drain holes in traps should all...

Page 6: ... is not required We recommend using an RF choke made from 8 turns of RG8U coaxial cable with 6 inch 15 2 cm diameter Important Do not use foam dielectric coax for your RF Choke because when the coax is wound in a coil the center conductor may migrate away from the center and detune your choke Attach th RF choke to the driven element using washers 41 and nuts 11 as shown in Figure H Be sure to tape...

Page 7: ...enna is returned at purchasers expense to Cushcraft or one of its authorized representatives This warrranty is in lieu of all other expressed warranties any implied warranty is limited in duration to one year Cushcraft Corporation shall not be liablefor any incidental or consequential damages which may result from a defect Some states do not allow limitations on how long an implied warranty lasts ...

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