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  DESCRIPTION

  

SPECIFICATIONS

Ground plane base station antenna working on CB and 

10m band. Made of anti-corodal aluminium tubes. Its 

robust structure ensure wide band and allows perfect 

performances and very good connections at long 

distances too.

Electrical Data

Type

          : 1/4 

l

 Ground plane

Frequency range           : 26.5-28.5 MHz

Impedance

          : 50 

W

Radiation (H-plane)         : 360

°

 omnidirectional

Polarization

          : Vertical

Gain

          : 0 dBd, 2.15 dBi

Bandwidth @ SWR 

£

1.5  : 

³

 2000 KHz (180 channel)

SWR @ res. freq.           : 

£ 

1.1

Max Power

          : 1000 Watts continuous

            3000 Watts short time

Feed system

          : Gamma match

Connector

          : UHF-female

Mechanical Data

Materials

          : Aluminium, Steel, Brass, Nylon

Wind resistance           : 130 Km/h

Length (approx.)           : 3640 mm

Weigth (approx.)           : 3900 gr

Mounting Mast

          : 

Æ

 35-42 mm

  DESCRIPTION

  

SPECIFICATIONS

SIRIO TOP-ONE

CB & 10m band Base Station Antenna

SIRIO TOP-ONE

antenne

SIRIO

S

HI-QUALITY ANTENNAS MADE IN ITALY

ID397,  pag.1/4

MOUNTING INSTRUCTIONS

MOUNTING INSTRUCTIONS

7

7

8

8

12

12

11

11

1

3

0

5

m

m

9

9

10

10

Insert limit punching

Top section whip

Bottom section whip

Ø11x13x1300

alu. tube

(cone top side)

Mounting mast

(not supplied)

M6x12 hexagon 

head screw

M6 washer

M6 spring 

lock washer

Æ

3.9x12.7
phillips 

tapping

screw

M5x16 hexagon 
head screw

M5 hexagonal nut

M5 washer

M4x4 hexagon

socket set screw

cup point

2mm hexagonal key

M6 hexagonal 

nut

M6 washer

M6 spring

lock 

washer

Aluminium ring

section

PVC cap for 

Æ

8 alu tube

B

 

Copyright 

SIRIO antenne

 - Technical Data are subjected to change - Printed in ITALY - Rev. 23/03/2009 - Cod. ID397, pag. 4/4

HI-QUALITY ANTENNAS MADE IN ITALY

TYPICAL S.W.R. RESPONSE

Model:  SIRIO TOP-ONE

S.W.R.

1.0

1.2

1.8

1.4

2.2

1.6

2.0

2.4

2.6

2.8

3.0

25.4

27.4

29.4

f.(MHz)

File:  F-01-029

26.5 - 28.5 MHz band

Hose clamp

Ø8x10x1400

alu. tube

(cone bottom side)

Ø6x8x700

alu. tube

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