HY GAIN HG V 4S VERTICAL

User Manual: Pdf HY-GAIN--HG-V-4S-VERTICAL

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IkEfEX N

TELEX COMMUNICATIONS, INC.

3600 ALDRICH LIVE SO. MINNEAPOLIS. MN 55420 U S A

/~g-~~~~r”iu IORDER NO. 337s

MAN’ ‘A’

I

MODEL V4S

Collinear Gain Vertical

for 420450 MHz

PN801910

General Description The new Hy-Gain V-4s 70 cm antenna is a collinear, dual % wave, omnidirectional,

vertical antenna for the 420-450 MHz Amateur band. The V-4s features two sets of %

wave radials which properly decouple the lower % wave radiator from the mast. It also

features a 100 watt enclosed coil that matches the antenna to a normal 50 ohms. The

feedpoint is a high quality “fY type connectorthat is protected from the weather within the

lower radiator. The V-4s also features a mast-to-mast bracket that will accept up to a two

inch O.D. mast.

The V-4s can also be used outside of the 7.0 cm Amateur band. Graphs are supplied so _ that the antenna can be set to any frequency between 420 and 470 MHz.

Specifications VSWR at resonance ............................................. less than 1.51

2:l VSWR bandwidth .......................................... 27 MHz minimum

Power gain ..................................................... 3 dBd, 5.2 dEii

Antenna/ Mast isolation. ................................................. 20 dl3

Power input .............................................. 100 watts continuous

Lightning protection ................................................. DC ground

Height. .................................................... .45 inches (1 .I 4 m)

Wind area .................................................. 0.28 sq. ft. (0.026)

Maximum mast O.D. ......................................... 2 inches (5.08 cm)

Hardware ................................. 18-8 stainless steel except for U-bolts

Assembly Unpack the antenna and check the parts against the Parts List and drawings.

Select four of the radial clamps and associated hardware and loosely assemble them as

shown in figure 1.

PO-3315-A-001

t

I

I-l” x 28’

; SLOTTED TUBE

I

< -\-A

- - ;*$A

Item

No. Oexcrlption

2 Redlel cbmp, 4S0

6 Tube 1” x 26”. slotted

13 Bolt,‘#lO-24 x t/2” hex

15 Lo&washer, X10, Intemel

16 Nut, 010-24, hex

Figure 1

-l-

Select the mast-to-mast clamp, plate and associated hardware and loosely assemble

them as shown in Figure 2.

Item

No. Detcriptton

1 Mart-to-mart bracket plate, 1 l/E”

3 Maat-to-maat bracket clamp, 1 118”

6 Tube 1” x 28”. slotted

18 Bait, ;/V-20 x 3/W hex head

20 Lockwasher. l/4”, internal

21 Nut l/4”-20 hex

23 u&a, s/16:’ x 2” x 2 11116”

24 Lo&washer. S/lb”, split

25 Nut. Y16”-10, hex

, .

Repeat the previous two steps for the remaining four radial clamps.

Set both assembled clamps upside down on a flat surface.

Select the eight radial tubes (7/l 6” x 6”) and insert them completely into the assembled

radial clamps.

Tighten the outer eight screws of each assembly just enough to hold the radial tubes in

place. These screws will be securely tightened in a later step.

Select the 1“ x 28” tube.

Slip both radial assemblies over the bottom of the 28” tube and position as shown in Figure

3 and Detail A. The unslotted end of the 28” tube is the bottom. Determine the “B”

dimension form figure 6. For example, at 445 MHz, B=8 3/16” (208 mm).

Tighten all screws in both radial assemblies securely and evenly.

AO-3375-B-002

\

I I-

MAST (not supplied 1

Figure 2

Slide the assembled clamp over the bottom end of the 28” tube as shown in Figure 3 and

securely tighten the four %I’-20 x %” screws.

Select the V-4s Coax adaptor assembly. The coaxial cable will attach to this in a later step.

Select the matching coil.

Screw the adaptor assembly into the base of the matching coil until snug. The pin in the

adaptor assembly should make contact with the pin in the base of the matching coil.

Select the V-4s whip adaptor. This part has %I’-24 thread on one end.

Screw the whip adaptor into the top of the matching coil.

-2-

14

8

11

6

15 16

SEE DETAIL 8

I I

SEE FIGURE 1

NOTE: THE TOPS OF THE

RADIAL CLAMPS FOR THE

- LOWER SET OF RADIALS

ARE EVEN WITH THE TIPS

OF THE HIGHER SET.

SEE FIGURE 2\

I/

\ \

Item

No.

5

6

7

6

9

10

11

12

14

15

16

26

Deacrtptlon

Tube, 7/16” x 10”

Tube, 1” x 26”, slotted

Tube, 516” x 7 l/2” swagsd

Coil, 100 watt, UHF

V-IS whlp adaptor, plated

Clamp, l/T, compression

Clamp, 1” comprerslon

Caplug. 7/W’, black

Bolt, MO-24 x l”, hex hcsd

Lockwasher, MO internal

Nut. #lo-24 hex

V-4S Coax adaptor assembly

Detail A

26

CONNECTOR t COAX

(CUSTOMER SUPPLIED 1

6

II

Detail B

Figure 3

Overall View

V-4S set at 445 MHz AD-3,Js-A-005

2.0

5

f

1.5

1.0 420 430 440 450 440 470

FREQUENCY IN MHz

Figure 4

-3-

.

Figure 5

Select the YE” x 7%” tube and slip the unswaged end over the whip adaptor,

Line up the holes in these two parts and secure using a #l O-24 x 1” hex head screw, #lO

internal lockwasher and #l O-24 hex nut. Tighten securely.

Assemble the two compression clamps as shown in Figure 7.

-PN 504098

VP”

x

1’/2”

HEX HEAD BOLT, SS

PN 551367

9’4”

SQUARE NUT, SS

Figure 7

MA-OOSS-A-047

-PN 504069

#lo x 1” HEX HEAD BOLT, SS

PN 555693 --J

$10 SQUARE NUT, SS

Slip the % inch compression clamp over the s:vaged end of the Ye x 7%” tube as shown in

Figure 8.

Select the 7/l 6” x 10” tube and insert it into the

K”

tube, to Dimension “A”. Refer to

Figures 3 and 5. For example, at 445 MHz. A=6 3/16” (157 mm).

v. r.-oooo-.a*,

SLOT IN TUBE

I

Figure ‘e

-4-

. -

Tighten the compression clamp securely.

Select the 7/l 6” caplug and slip over the end of the 7/l 6” tube.

Select the assembled one inch compression clamp and slip it over the top end of the 1” x

28” tube. Position it as shown in Figure 8 and tighten it just enough to prevent it from sliding

down the tube.

There are two ways to attach your coax to the V-4s antenna. The first method involves

attaching a short length of coax to the antenna before attaching the antenna to the

supporting mast. The remaining lenght of coax can then be attached and routed to the

-radio. The short length of coax must be a least 3 feet long so the connection between coax

lengths can be made below the mast-to-mast bracket.

The second method involves attaching the complete length of coax to the antenna before

attaching the antenna to the supporting mast. In this method, the antenna and entire coax

length must be carried up the tower or mast.

Choose one of the suggested methods of attaching the coax to the V-4s.

Insert one end of the coax into the bottom of the 1” x 28” tube. Push the coax through until

the connector emerges from the top to the tube.

Screw the connector onto the V-4s coax adaptor.

Push the coax adaptor into the top of the 1” x 28” tube until the matching coil rests on the

one inch tube. Tighten the one inch compression clamp.

The antenna can now be mounted on a mast (2” O.D. max.). For adequate lightning

protection, the antenna supporting structure must be well grounded.

WARNING: /nstal/atlon of this product near power

lines Is dangerous. For your safety, follow the

lnstallatlon directions.

Several antennas may be mounted on the same mast. Your V-4s should be mounted

above the other antenna for best performance. When side mounting the V-4s on a tower, it ’

should be kept at least 10 inches away from the tower.

- *

-5-

Item

No.

1

3

4

5

6

7

8

9

10

11

12

13

14

1.5

16

17

18

19

20

21

22

23

24

25

26

LI l

1

Parts List

-‘RINTED IN U S A

Ccxwyht~ 1982 by Telex

-ELEX COMMUNICATIONS ‘NC

All rlqnrs reSer”W

25 NOV 1982

-6-

Part No.

160011

160012

160047

170474

170475

191003

191004

872202

872203

280168

380413

380421

455644

500158

504069

565697

554071

555693

505266

504098

562961

554099

551367

540036

564792

555747

872205

Description QtY

Mast-to-mast bracket plate, 1%” ...................... i

Radial clamp, 45’. .................................. 8

Mast-to-mast bracket clamp, 1%” ..................... 1

Tube. 7/rs” O.D. x 6

................................... 8

Tube,W’x 10”. .................................... 1

Tube, l)( O.D. x 28” Slotted ........................... 1

Tube. 5Ia’t x 7%” swaged, drilled & Slotted I

..............

Coil, 100 watt, UHF ................................. :A! to 10 ’

Parts Pack, (stainless steel) V-4s ..................... 1

V-4s whip adaptor, plated ........................... 1

Clamp,

l/2”,

compression ............................ 1

Clamp, l”, compression ............................ 1

Caplug, ‘/w”, black ................................. 1

Bolt, #lo-24 x ‘A”, hex head.. ...................... 33

Bolt, #lo-24 x l”, hex head ......................... 2

Lockwasher,#lO, internal ........................... 33

Nut, #lo-24, hex .................................. 33

Nut, #lo-24, square.. .............................. 1’

Bolt, %“-20 x %“, hex head .......................... 4

Bolt, %“-20 x l%“, hex head ......................... 1

Lockwasher. %“, internal ............................ 5

Nut, %..-20. hex .................................... 4

Nut, %“-20, square ................................. 1

U-bolt.

‘/I6 ..........................................

2

Lockwasher, %s”, split .............................. 4

Nut, %s”-18, hex ................................... 4 (

V-4s coax adaptor assembly ........................ 1 -4 2 9.6 J .

- .