1/4''s Fire-retardant feeder cable

Type                                 Type No.

Standard cable         

 Fire-retardant cable   

Construction                                                              

Inner conductor

Material

CCA

Diameter(mm)

1.90±0.02

Insulation

Material

Foamed PE

Diameter(mm)

5.0±0.1

Outer conductor

Material

Helical corrugated copper tube

Diameter(mm)

6.4±0.15

Jacket

Material

LLDPE or fire-retardant PE

Min.thickness(mm)

>0.4

Diameter(mm)

7.5±0.15

Mechnical Characteristics                                     

Bending radius(mm)

Single bend

13

Repeated bend

25

Tensile strength(N)

600

Cable weight(kg/km)

70

Recommended temperature(℃)

Storage

-70~+85

Installation

-40~+60

Operating

-55~+85

Electrical  Characteristics                                

Inner conductor DC resistance(Ω/km)

10.45

Outer conductor DC resistance(Ω/km)

7.02

Characteristic impedance(Ω)

50±1.5

Capacitance(p F/m)

79.5

Velocity(%)

84

Dielectric strength(KV)

2.0

Insulation resistance(MΩ/km)

>1×10⁴

Peak power rating(KV)

13.4

Peak voltage(V)

1200

Cut-off frequency(GHz)

25.0

Attenuation and Average power(Maximum attenuation value shall be 105% of the nominal attenuation value)                    

Frequency

(MHz)

Attenuation

(@20℃,d B/100m)

Average  power(kv)

200

8.41

0.86

450

12.80

0.56

800

17.40

0.42

900

18.40

0.38

1000

19.60

0.37

1500

24.30

0.29

1800

26.90

0.27

2000

28.50

0.25

2200

30.22

0.23

2500

32.10

0.22

3000

35.60

0.20

VSWR                                       

800MHz~1000MHz

1.10

1700MHz~2500MHz

1.13

2500MHz~3000MHz

1.15