RG7 Tri-Shield Coaxial Cable with UL Standard, 75 ohm Drop Cables for CATV, CCTV System

construction

Testing item

Unit

Standard

Inner conductor

mm

1.30±0.01

Dielectric

5.72±0.05

1^st shield, Tape

Material

-

Bonded aluminum foil

2^nd shield, Braid

Material

-

Alloy wire

Electrical properties

Coverage

%

60%

3rd shield, Tape

Material

-

Normal aluminum foil

4^th shield, Braid

material

-

        Alloy wire

coverage

%

40%

Outer jacket

PVC or PE

mm

8.59±0.10

Withstanding voltage

-

AC 1000V/min

Capacitance

pF/m

54±3

Characteristic impedance(10MZ)

Ω

75±3

SRL

dB

20

Velocity of propagation

%

85

Attenuation

@ 68^OF(20^oC) (max)

5MHZ

dB/100m

1.54

55MHZ

4.10

250MHZ

8.40

300MHZ

9.25

450MHZ

11.35

600 MHZ

13.28