Hy-Gain TH5 Manuale utente

Broadband

Model TH-5MM

Instruction

Manual

Hy-gain

308 Industrial Park Road

Starkville, MS 39759 USA PH: 662-323-9538

FAX: 662-323-6551

TABLE OF CONTENTS

HAPTERI Page

General Description ....................................…………...............………………………………...1

ecifications ...............................................…………………………………………….............1

CHAPTER 2

CHAPTER

Assembly of the Boom-to-Mast Bracket and Boom ...............……………………................ 5

Assembly of the Element-to-Boom Brackets on the Boom ............………………….......... 6

Installation of Tubing Clamps ....................…………………………………............................ 7

Element Assembly ........................……………………………................................9

Front Driven Element .......................………………………………………….............................9

Rear Driven Element .........………………………………...........................................9

10 Meter Reflector Element …………………………………………………………............... 10

15-20 Meter Reflector Element .....................…………………………………...................... 10

10-15-20 Meter Director Element .................……………………………….......................... 12

CHAPTER 4

Installation .........................................………………………………………………..................19

Installation On a Crank-Up Tower ...........……………………………................................ 19

Attaching the Antenna to the Mast ..........……………………………….............................. 19

Other Types of Towers .......................……………………………………...........................19

Lightning Protection ..................................................... 20

Attachment of Feedline ..................................................20

VSWR Curves .........................................................20

CHAPTER 5

Operation .............................................................23

CHAPTER 6

CHAPTER 7

CHAPTER 8

LIST OF ILLUSTRATIONS

Figure P

1 Boom-to-Mast Bracket ..........................................

2 Assembly of Boom .............................................

3 Element-to-Boom Bracket ........................................

4 Tubing Clamps.................................................

5Trap Detail.…………………………………………….................................................1

Detail A - Detail - Measuring Point

Trap .………………………………………………………………………...................... 1

6 Element Assembly and Antenna Dimensions ....……………………….................... 1

7 Rope Dampener ........................………………………………………........................1

8 Overall View of Beta Match and Phasin

Tubes

9 Beta Match Assembly .....………………………………………………………………...1

10 Pigtail to Rear Driven Element ...............………………………………..................... 1

11 Pi

tail to Balun Connection and Front Driven Element .....…………………............ 1

CHAPTER 1

The Hy-Gain TH5/MK2 is a 5 element, three band beam antenna designed

for broadband, high performance operation on the Amateur 10, 15 and 20

meter bands. Broadbanding is accomplished through the use of two fully

trapped driven elements. Stainless steel hardware and clamps are used on

all electrical connections. Hy-Gain's 50 ohm BN-86 balun and preformed feed

straps are supplied. The antenna is designed to fit masts from 1.9" to 2.5" in

diameter and can be rotated with Hy-Gain's CD-4511, Ham IV or T2X

! ri I

Frequencies of Operation: 20m

Under 2:1 VSWR

(

MHz

)

..................... 14.0-

15m 10m

21.0-21.45 28.0-29.4

Under 1.5:1 VSWR (MHz).................. 14.09-14.32 21.11-21.45 28.25-

Front-to-Back Ratio (dB) ........................19 +/-5 22+/-5 19+/-5

Average 1/2-Power Beamwidth (deg).... 67 66 66

Maximum Gain

(

dBi

)

..............................7.8 8.0 9.0

Maximum Power .................................... Maximum Legal

Lightning Protection ............................... DC Ground

Mechanical

Boom Length..................................................................................19 feet (5.8

m) Boom Diameter..........................................................................2 inches

(5.1 cm) Longest

Element..............................................................................31' 6" (9.6 m)

Longest Driven Element ` (one-half total length)

....................................................... 20m - .183 wavelength 15m -.206

wavelength 1 0m - .227 wavelength

Specifications Mechanical (Cont.)

(Cont.) Turning Radius ..........................………...................................................18'5"

(5.6m) Accepts Mast ..........................1.9" to 2.5" O.D. (50 mm to 63.5 mm)

Net Weight.........................................................…................ 57 lbs. (25.8 kg)

Maximum Wind Survival .................................................100 mph (161 kmph)

Effective Wind Area ........................…...............................7.4 sq. ft. (0.68 m)

Effective Moment*.......................................................1050 ft. Ibs (144 kg-m)

Wind Load at 80 mph .............................................................190 lbs. (86 kg)

Element Tubing Clamps.......... ........................................ All stainless steel

Hardware ............................... Stainless steel, except for boom-to-mast bolts

Suitable Rotators ..................…..................Hy-Gain CD-4511, Ham IV or T2X

'Projected Area (elements) .................................... 10.1 sq. ft. (.94 sq. m.)

(boom) .............................................3.2 sq. ft. (.30 sq. m.)

*Effective moment is defined as the product of the antenna weight and

turnin

radius.

•Projected Area is the actual (flat) projected area of either the elements or

boom (highest value) without any shape factor included. This area may be

used with EIA/TIA-222-D and later versions and with the UBC formulas to

determine tower and mast loading. On HF beams, the element area is

usually higher. On VHF/UHF beams, the boom area is usually higher. When

stacking HF and VHF beams, use the element area of all beams at their

attachment points to determine loading at zero degrees to the boom axis.

CHAPTER 7

FOR OUR OVERSEAS CUSTOMERS: The United States uses English units

of measurement. Please see Parts List in back of this manual for assistance

in identif

the hardware and components supplied with this product.

Choose a large, clear area to assemble the TH5/MK2. The area must be at

least 19 ft. x 31 ft. 6 in. (5.8 m x 9.6 m). You may wish to use sawhorses or

chairs to support the boom during assembly. A concrete driveway is an

excellent area for assembly. If you assemble this antenna over a grassy area,

precautions should be taken so that hardware is not accidentally lost during

TOOLS: The followin

tools are re

uired for eas

assembl

of the TH5/MK2:

1 Tape Measure, 12 foot

2 Adjustable Wrench, 8 inch

1 Nut Driver, 7/16 inch

1 Nut Driver, 3/8 inch

1 Nut Driver, 5/16 inch

When unpacking your antenna, check inside of all tubing for parts (traps,

smaller tubing, etc.). To conserve space, these smaller articles are sometimes

put inside larger pieces. Check all parts against the Parts List to make sure no

parts are missing. The hardware supplied with this antenna is bagged by

thread size for

our convenience.

All tubing supplied with the TH5/MK2 telescopes together. Make all

measurements to the

iven dimensions

lus or minus

no more than an 1 /8

The assembly of this antenna will be easier if you read this manual completely

through at least three (3) times before beginning assembly. Allow at least 6

hours for assembl

. Double and tri

le check ALL dimensions after assembl

NOTE: An extra Figure 6 has been inserted in this manual for use when

assemblin

the antenna.

The position of the elements onto the boom begins at the center of the

antenna and progresses outward. Followthe instructions as outlined on page

5 and referto Fi

ure 6 for assistance.

-3-/

(

-4-

blank

)

Assembly of the

Boot-to-Mast

Brackets and Boom

Item Item

No. Description No. Description

16 Bolt hex head

5/16"-18 x 5" 35 Nut

hex

1/4"-20

17 Bolt hex head, 5/16"-18 x 3' 36 Lockwasher, internal, 1/ 4"

18 Bolt hex head, 5/16"-18 x 2 3/4' 52 Caplug, 2'

19 Nut,hex, 5/16'-18 59 Mast Bracket, cast aluminum

20 Lockwasher, split, 5/16" 65 Tube, Boom, swaged, 2" x

23 Bolt hex head

5/16" 66 Clam

Boom-to-Bracket

31 Bolt hex head, 1/4"-20 X 3/4" 67 Bracket, Casting-to-Boom

Select the boom-to-bracket damp parts (Item Nos. 66 & 67). Loosely

assemble them on the boom ends (Item No. 65), as shown in Figure 1. Line

up the holes on both brackets and both boom ends. Secure the two brackets

together with four (4) 1/4"-20 X 3/4" bolts, lockwashers, and nuts. Secure the

brackets to the two boom ends using the 5/16"-18 x 2 314" bolts,

lockwashers, and nuts. Tighten these six (6) bolts securely. The use of heavy

motor oil on stainless steel threads will prevent galling of threads.

Assemble the two cast aluminum brackets (Item No. 59) on the mast at the

desired height above your tower. Secure the two brackets together using the

two (2) 5/16"-18 x 4" bolts, lockwashers, and nuts. You may wish to drill a

hole through your mast so that the remaining 5/16"-18 x 4" bolt may be

inserted through the cast brackets and the mast and tightened. This bolt will

prevent the antenna from twisting on the mast in high winds. See Figure 1.

The four (4) 5 inch bolts will be installed when the antenna is installed on the

Slip the two remaining boom sections (Item No. 57) over the two swaged

ends of the assembled boom and secure using (2 each) 1/4"-20 x 2 1/2" bolts,

lockwashers

and nuts as shown in Fi

ure 2.

Figure 1 Boom-to-Mast

Bracket

CHAPTER 8

Assembly of the Front Driven Element -

Element-to-Boom Select one pair of the largest element-to-boom brackets (Item No. 62).

These are

Brackets on the marked with a number 14. Assemble the brackets on the boom 35 inches to

Rear Driven Element -

Select another pair of the largest element-to-boom brackets (Item No. 62).

Assemble these brackets on the boom 20 inches to the right of the center of

the mast bracket. Refer to Fi

ure 3. DO NOT ti

hten the bolts at this time.

10 Meter Reflector

Select a pair of the smallest element-to-boom brackets (Item No. 60). These

are marked with a number 4. Assemble these brackets on the boom 531/4

inches to the right of the rear driven element brackets. Refer to Figures 3 and

6. DO NOT tighten at this time.

20 Director and 15

20 Reflector

Select two sets of medium sized element-to-boom brackets (Item No. 61) and

loosely assemble these on the boom ends. The front set should be 68 inches

to the left of the Front Driven Element brackets. The rear set should be 36

inches to the right of the 10 meter reflector brackets. Refer to Figures 3 and

6. DO NOT ti

hten now.

Installation of

Tubin

DRIVEN ELEMENT DETAIL

Item

No. Description No. Description

Bolt, hex head, '/."-20 x 3/8 " 36 Lockwasher, internal, '/,"

Bolt, hex head, Y."-20 x 3/4" 56 Insulator, Driven Element

Nut, square, 1/4" - 20 60 Bracket, Element-to-Boom, #4

Nut, hex, '/."-20 61 Bracket, Element-to-Boom,

62 Bracket

Element-to-Boom

Figure 3 Element-to-

Boom Bracket

Select the proper size tubing clamp as shown in the chart When

installing the clamps, place the clamp near the tube end with the top of

the clam

over the slot in the tube as shown in Fi

ure 4.

After adjustment of the tubing lengths, tighten the clamp with a 5/16

inch nut driver, socket, or open end wrench until the tubing will not

twist or telesco

e. DO NOT OVERTIGHTEN.

REFLECTOR

DIRECTOR

393S

010

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