SS72012 datasheet(17/144 Pages) ACIT

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Leaky Feeder Cables

Thermax Leaky Feeder cable

works like an antenna,

enabling reliable transmission of data to and from

places where radio wave cannot reach.

These cables are ideal for communications or data-

transmission applications in such demanding

environments as:

• Steel-frame buildings;

• Underground mines;

• Transportation tunnels;

• Railway lines;

• Highway and rail bridges;

• Cargo ships.

The cables shown below are typical constructions;

please contact your Thermax representative with

your speciﬁc requirements.

Approvals

75-ohm:

U.S. Department of Labor, Mine Safety and Health

Administration Approval #7K-SC-265072-MSHA;

Pennsylvania Department of Environmental

Protection, Bureau of Deep Mine Safety Approval

# P-7K-SC-265072-MSHA.

50-ohm:

UL Listed Power Limited Circuit Cable Type CL2P.

Dimensions in inches (mm). All values are nominal unless otherwise indicated. BC: Bare Copper.

Conductor

Dielectric

Shield

Binder

Inner Jacket

Outer Jacket

75-Ohm Double-Jacketed Leaky Feeder Coaxial Cable

Construction Details

Conductor:

Solid annealed BC, .092 (2.33) diameter.

Dielectric:

Semi-air-spaced polyoleﬁn, .396 (10.06) diameter.

Shield:

Spirally-wrapped solid annealed BC wires,

each .6 mm diameter.

Binder:

Adhesive polyester tape wrap.

Inner Jacket:

Black polyoleﬁn, .533 (13.53) diameter.

Outer Jacket:

Yellow PVC, .627 (15.93) diameter.

Temperature rating:

75˚ C.

Conductor

Dielectric

Shield

Jacket

Binder

50-Ohm Plenum Leaky Feeder Coaxial Cable

Construction Details

Conductor:

Solid annealed BC, .092 (2.33) diameter.

Dielectric:

Foamed ﬂuoropolymer, .240 (6.10) diameter.

Shield:

Spirally-wrapped solid annealed BC wires,

each .6 mm diameter.

Binder:

Adhesive polyester tape wrap.

Jacket:

Yellow PVDF, .340 (8.64) diameter.

Temperature rating:

125˚ C.

Impedance

Velocity of

Capacitance

Attenuation @160 MHz

Attenuation @486 MHz

Propagation

(pF/ft)

dB/100 ft.

dB/100 meters

dB/100 ft.

dB/100 meters

75 ±3.0 ohms

84%

16.1

1.31

4.3

3.18

10.43

Electrical Performance

Impedance

Velocity of

Capacitance

Attenuation @160 MHz

Attenuation @486 MHz

Propagation

(pF/ft)

dB/100 ft.

dB/100 meters

dB/100 ft.

dB/100 meters

50 ±3.0 ohms

81%

25.0

2.3

7.5

4.9

16.0

Electrical Performance

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