Hy-Gain V3R Manuale utente

ORDER NO. V3R

MODEL V3R

Collinear Gain Vertical for 216-225 MHz

INSTRUCTION MANUAL

General Description

The new Hy-Gain V3R VHF antenna is a

collinear 5/8-wave omnidirectional vertical

antenna for the 216-225 MHz frequency range.

The V3R features two sets of 1/4-wave radials

which properly decouple the lower 5/8-wave

radiator from the mast. It also features a 500 watt

enclosed coil that matches the antenna to a

nominal 50 ohms.

The feedpoint is a female UHF connector that is

protected from the weather within the lower

radiator. The V3R also features a mast-to-mast

racket that will acce

t u

to a 2 inch O.D. mast.

Settings are supplied so that the antenna can be

set to an

fre

uenc

between 215 and 230 MHz.

Assembly

ack the antenna and check the

arts a

ainst

Select the eight (8) 7/16" x 12" radial tubes (Item

No. 2), and insert them completely into the

assembled radial clam

Select four of the radial clamps and associated

hardware and loosely assemble them as shown in

Figure 1.

Repeat the previous step for the remaining four

radial clam

Tighten the outer eight (8) screws of each

assembly just enough to hold the radial tubes in

place. These screws will be securely tightened in

a later step.

Set both assembled clamps upside down on a flat

surface.

Select the 1" x 48" tube

(

Item. No. 5

)

Slip both radial assemblies over the top of the

48" tube and position as shown in Figure 4 and

Detail A. The slotted end of the 48" tube is the

top. Determine the "B" dimension from Table 1.

For example, at 221 MHz, B= 16 1/2" (419 mm).

Tighten all screws in both radial assemblies

securel

and evenl

Select the mast-to-mast clamps and associated

hardware and loosely assemble them as shown in

Figure 2. Install the 1/4" hardware first.

Slide the assembled mast-to-mast clamp over the

bottom end of the 48" tube as shown in Figure 2

and securely tighten the four (4) 1/4"-20 x 3/4"

bolts, nuts and lockwashers (Item Nos. 8, 11 and

)

Figure 1 Radial Clamp

Assembl

Figure 2 Mast-to-

Mast Clam

NOTE: The end of the 1" x 48"

tube (Item 5) should be even

with the bottom of the mast-to-

mast clam

(

Items 21 and 22

)

UPPER RADIATOR/COIL ASSEMBLY

Refer to Fi

ure 3.

Select the V3R Coil Assembly. The coaxial

cable wili attach to this in a later ste

Select one No. 10 compression clamp (Item 16)

and install over the slotted tube end of the coil

assembly (Item 6).

Select the 7/8" O.D. x 15" tube (Item 4) and

insert the plain end into the slotted tube of the

coil assembly 4 3/4 inches. Position the

compression clamp as shown in Figure 5 and

tighten securely.

Select one No. 6 compression clamp (Item 15)

and place over the swaged/slotted end of the

7/8" tube

(

Item 4

)

Select the 5/8" x 15" (Item 3) tube and insert

either end into the 7/8" tube

(

Item 4

)

Refer to Figure 4. Adjust the 5/8" x 15" tube so

dimension "A" is set for the frequency of

operation. For example, at 221 MHz, A= 27

1/4" (692 mm) See Table 1. Tighten the No. 6

com

ression clam

(

Item 15

)

securel

NOTE: The tuning charts in this manual are

accurate. However, due to variation in

installations some minor adjustments may be

required to resonate the antenna on the desired

frequency.

Select the 5/8" caplug (Item No. 17) and slip it

over the end of the 5/8" tube.

NOTE: Dimension "A" is from the top of the

coil form to the tip of the element. Dimension

"B" is from the bottom of the coil form to the

top of the radial clamps.

Item#Description

3 Tube, 5/8" x 15"

4Tube, 7/8" x 15" swaged &slotted

5tube, 1" O.D. x 48" slotted

6Coil, V3R

15 Clamp, #6, Tubing

16 Clamp, #10, Tubing

17 Caplug, 5/8" Figure 3

er Radiator/Coil Assembl

FREQUENCY "A" "B"

215 28 1/2" 17 3/4"

221 271/4" 161/2"

223 26 3/4" 16"

225

230 261/4"

25 1/2" 151/2"

14 3/4"

Table 1

Figure 4

Overall View

Select the proper size tube clamp as shown in

Figure 5. When installing the clamps, place the

clamp near the tube end with the top of the clamp

over the slot in the tube as shown.

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

Fits

Part

Description

Tubing

No. Sizes

Clamp, Size #6

358756 all stainless steel 1/2" and 3/4"

5/16" hex head screw

Part

No.

358757

Description

Clamp, Size #10

all stainless steel

5/16" hex head screw

Fits

Tubing

Sizes

Figure 5 Compression

Clam

1”

Select the No. 10 tube clamp and slip it over the

top end of the 1" x 48" tube. Position it as shown

in Figure 3 and tighten it just enough to prevent

it from slidin

down the tube.

INSTALLATION

Screw the coax connector onto the V3R coil

connector.

Push the coax cable into the top of the 1" x 48"

tube until the matching coil rests on the one inch

tube. Ti

hten the No. 10 tube clam

There are two ways to attach your coax to the

V3R antenna. The first method involves

attaching a short length of coax to the antenna

before attaching the antenna to the supporting

mast.

The antenna can now be mounted on a mast (2"

O.D. max.). For adequate lightning protection,

the antenna supporting structure must be well

rounded.

The remaining length of coax can then be

attached and routed to the radio. The short length

of coax must be at least 6 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 u

the tower or mast.

Choose one of the suggested methods of

attaching the coax to the V3R.

Insert one end of the coax into the bottom of the

1" x 48" tube. Push the coax through until the

connector emerges from the top of the tube.

WARNING

Installation of this product near power

lines is dangerous. For your safety,

follow the installation directions.

Several antennas may be mounted on the same

mast. Your V3R should be mounted above the

other antenna for best performance. When side

mounting the V3R on a tower, it should be kept

at least 20 inches away from the tower. The ideal

distance to acheive 'a near omni-directional

radiation pattern is approximately 27 inches from

the nearest tower leg or face.

V3R Parts List

Item No. Part No. Description Qty

1 160012 Radial Clamp, 45 degree.................................................. 8

2 170476 Tube, 7/16" O.D. x 12".................................................... 8

3 170615 Tube, 5/8" O.D. x 15" .......................................................1

4 190212 Tube, 7/8" O.D. x 15" swaged......................................... 1

5 191005 Tube Assembly, 1" x 48"..................................................1

6 878706 Coil Assembly, V3R .........................................................1

878631 Parts Pack V3....................................................................1

7 540036 U-Bolt, 5/16"-18 ............................................................2

8 505266 Bolt, 1/4"-20 x 3/4" hex head ........................................4

9 (Not Used)

(

Not Used

)

11 554099 Nut, 1/4"-20, hex ...........................................................4

12 555747 Nut, 5/16"-18 hex........................................................... 4

13 562961 Lockwasher, 1/4" internal .............................................. 5

14 564792 Lockwasher, 5/16" split ................................................ 4

15 358756 Clamp, size #6 tube ........................................................ 1

16 358757 Clamp, size #10 tube..................................................... 2

17 450503 Caplug, 5/8" black .........................................................1

18 500158 Bolt, #10-24 x 1/2" hex head .......................................33

19 554071 Nut, #10-24 hex ...........................................................33

20 565697 Lockwasher, #10 internal ............................................ 33

21 160011 Mast-to-Mast Plate............................................................1

22 160047 Mast-to-Mast Clamp .........................................................1

NOTE: Some extra small parts are included for

spares.

Converting American Measurements to Metric

Use this scale to identify lengths of bolts,

diameter of tubes, etc. The American inch (1")

and foot (1') can be converted to centimeters in

this wa

1 inch (I")= 2.54 cm

1 foot

(

)

= 30.48

Example:

Indice

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