Item 

SYWV-75-5

SYWLY-75-7

SYWV-75-7

SYWY-75-7

SYWV-75-9

SYWY-75-9

SYWLY-75-9

SYWY-75-12

SYWLY-75-12

Structure

Inner conductor

Material 

Copper wire or copper clad steel wire

Copper wire or copper clad aluminum wire

Diam/mm

1.00±0.02

1.66±0.02

2.15±0.03

2.77±0.03

Insulation

Material

Physical foamed polythene

Diam/mm

4.80±0.20

7.25±0.25

9.00±0.25

11.50±0.30

External conductor

Material

plastic-aluminum+ tinned wire

(aluminum-alloy wire)

plastic-aluminum+ tinned wire

(aluminum-alloy wire or aluminum pipe)

Shealth

Material

PVC

PVC or PE

PVC or PE

PE

Diam/mm

7.2±0.3

10.3±0.3

12.3±0.3

15.1±0.3

Functional Parameter

Characteristic impedance/

75±3

75±2.5

75±2.5

75±2

Attenuation constant (100m at 20℃) ≥

50MHZ

4.8

3.2

2.4

1.9

200 MHZ

9.7

6.4

5.0

3.9

550 MHZ

16.8

10.7

8.5

6.7

800 MHZ

20.3

13.3

10.4

8.2

Return loss/dB≥

VHF

20.0

20.0

20.0

20.0

UHF

18.0

18.0

18.0

18.0

Shielding attenuation/dB≤

50 MHZ

60

60

60

60

200 MHZ

70

70

70

70

800 MHZ

70

70

70

70

Exterior Logo

Qualified

Use 

Branched wire; user line

Main trunk, trunk

Main trunk, trunk, branched wire