Diamond Antenna KV2, Operation Instructions

↓

↓

↑

↑

3.5MHz

Normal position

7MHz

Normal position

②

Adjustment  procedure  can  be 

started  from  higher  frequency 

(7MHz).  Transmit  at  desired 

frequency and change the location 

and  length  of  hat  to  have  lowest 

VSWR at the frequency. 

・

 Resonant frequency 

variations by capacity hat 

location  and  hat  element  length 
combinations.

Please refer to the following chart to 
find  out  changes  in  resonant 
frequency bandwidth by capacity hat 
location  and  hat  element  length 
combinations.  By  changing  the  hat 
location  up  and  down,  resonant 
frequency  of  the  antenna  changes 
within  selected  variable  resonant 
frequency bandwidth.

Capacity hat location and the hat 
length combinations chart.

Combinations

Frequency range Frequency

3.5MHz

↓
↓

↓
↓
↓

7MHz

↓
↓

↓

Hat 4pcs

Hat 2pcs + Hat S 2pcs

(Standard)

Hat S 4pcs

Hat S 2pcs +

Hat SS 2pcs
Hat SS 4pcs

Hat SS 2pcs

Hat S 2pcs

Hat SS 4pcs

(Standard)

Hat SS 2pcs

No Hat

3.450

-

3.515MHz

3.515

-

3.575MHz

3.595

-

3.665MHz

3.660

-

3.720MHz

3.725

-

3.770MHz

3.765

-

3.810MHz

7.00

-

7.05MHz

7.05

-

7.10MHz

7.10

-

7.15MHz

7.15

-

7.20MHz

3.5   -15 

 f

0

+15

7 

 -45 

 f

0

+45

MHz   KHz 

KHz

1.5
1.4
1.3
1.2
1.1

・

VSWR

It  may  be  changed  depending  on 
installation requirements.

・

Specifications

Frequency range

80, 40 m

(3.5, 7 MHz)

Impedance

50Ω

VSWR

Less than 1.5

Maximum power rating
                         250W SSB (3.5MHz)      
                         500W SSB (7 MHz)
Maximum wind resistance

35m/sec

Length

6.14m 

Weight

2.65kgs

Connector

MJ

Mast diameter accepted

1 1/5" - 2 1/3"

(30-62

φ

)

Design

Dual band trap vertical 

antenna with trap radials

Though  these  products  purchased 
are manufactured under strict quality 
control,  if  damage  is  caused  by 
transporting, ask your dealer promptly.

Design  and  specifications  of  these 
products  will  be  changed  for  future 
improvement without advance notice.

・

Resonant frequency change 

corresponding to the value of the 
hat movement.

In  3.5MHz

band,  approximately 

10KHz per 4.5cm movement.
In 7MHz band, approximately 10KHz 
per 6.5cm movement.

※

Moving the hat upward will change 

resonant frequency of the antenna 

higher, and down ward will change 

the  frequency  lower.  For  change 

of the frequency value, refer to the 

resonant 

frequency 

change 

corresponding  to  the  value  of  the 

hat movement section.

DIAMOND ANTENNA CORPORATION

 Miyata Building, No.15-1,1-chome Sugamo,Toshimaku Tokyo,Japan 170-0002 TEL.03-3947-1411 FAX.03-3944-2981

Home Page   http://www.diamond-ant.co.jp/english.html

E-mail overseas@diamond-ant.co.jp