Test  items

Unit

 Limits

 Center conductor

Material

Copper aluminum

Composition

Inches

Mm

0.124

3.15±0.03

 Dielectric  

  Material

Gas  expanded  pe

Nom.diameter

Inches

Mm

0.5137

13.05±0.2

Outer  conductor

  al tape

Material

 Solid al tube

 Nom.diameter

Inches

Mm

0.0137

0.35

Messenger steel  

Nom.diameter(mm)

 2.77±0.03

   PE Jacket 

Nom.thickness(mm)

Inches

Mm

0.0433

1.1

Nom.diameter

Inches

Mm

 0.621

15.78±0.2

Attenuation                                                                         68°f.(20)

Frequency

Maximum (dB/100ft)

Maximum (dB/100m)

50MHz

0.49dB↓

1.60 dB↓

200MHz

0.98 dB↓

3.20dB↓

550MHz

1.65 dB↓

5.40dB↓

800MHz

2.01dB↓

6.60 dB↓

 1000MHz

2.56dB↓

8.40dB↓

High  voltage

Ac/min

1,000↑

Capacitance

Pf/min

50±3

Return  loss

dB

20↑

Characteristics  impedance

Ω

75±2.0

Velocity  of propagation

%

87