RFS-RAY78-50JFNA 低煙無鹵漏波電纜 7/8" RADIAFLEX® RAY Cable, A-series

Product Description

RADIAFLEX® functions as a distributed antenna to provide communications in tunnels, mines and large building complexes and is the solution for any application in confined areas.

Slots in the copper outer conductor allow a controlled portion of the internal RF energy to be radiated into the surrounding environment. Conversely, a signal transmitted near the cable will couple into the slots and be carried along the cable length.

RADIAFLEX® is used for both one-way and two-way communication systems and because of its broadband capability, a single radiating cable can handle multiple communication systems simultaneously.

This RADIAFLEX® radiating cable utilize a low-loss cellular polyethylene foam dielectric and a smooth copper outer conductor which offers a superior electrical performance together with good bending properties.

Features/Benefits

Broadband from 30 MHz to 1000 MHz
Optimized for high frequencies and digital transmission
Low coupling loss variation
For tunnel applications

RAY cable, A-series

Technical Specifications

Size	[ in ]	7/8"
Maximum Frequency	[ MHz ]	1000
Cable Type		RAY
Jacket		JFN: halogen free, non corrosive, flame and fire retardant, low smoke, polyolefin Test methods for fire behaviour of cable : IEC 60754-1/-2 smoke emission: halogen free, non corrosive IEC 61034 low smoke IEC 60332-1 flame retardant IEC 60332-3-24 fire retardant
Slot Design		Groups of slope slots at short intervals
Previous Model Number		RAY78-50JFN
Impedance	[ Ω ]	50 +/-2
Velocity	[ % ]	89
Capacitance	[pF/m (pF/ft)]	75 (22.9)
Inductance	[ µH/m (µH/ft)]	0.1875 (0.057)
Inner Conductor dc Resistance	[ Ω/km (1000 ft) ]	1.46 (0.44)
Outer Conductor dc Resistance	[ Ω/km (1000 ft) ]	2.16 (0.66)
Outer Conductor Material:		Overlapping Copper Foil
Inner Conductor Material:		Copper Tube
Diameter over Jacket	[ mm (in) ]	28.5 (1.12)
Diameter Outer Conductor:	[ mm (in) ]	23.8 (0.94)
Diameter Inner Conductor:	[ mm (in) ]	9.3 (0.37)
Minimum bending radius, single bending	[ mm (in) ]	350 (13.8)
Cable Weight	[ kg/m (lb/ft) ]	0.60 (0.40)
Max. tensile force	[ N (lb) ]	2300 (507)
Indication of Slot Alignment		Bulge atop slots
Storage temperature	[ °C (°F) ]	-70 to +85 (-94 to +185)
Installation temperature	[ °C (°F) ]	-25 to +60 (-13 to +140)
Operation temperature	[ °C (°F) ]	-40 to +85 (-40 to +185)
Stop band	[ MHz) ]	240-300, 500-590, 750-860
Recommended / maximum clamp spacing	[ m (ft) ]	0.9 (3)
Minimum Distance to Wall	[ mm (in) ]	80 (3.15)
Length	[ m (ft) ]
Rev. Number		2008/08/26

Table of Losses

Frequency, MHz	Longitudinal Loss, dB/100 m (dB/100 ft)	Coupling Loss 50%, dB	Coupling Loss 95%, dB
75	1,04 (0,32)	53 (57)	62 (66)
150	1,48 (0,45)	58 (62)	69 (73)
450	2,67 (0,81)	60 (62)	67 (69)
870	5,41 (1,65)	54 (56)	63 (65)
900	5,70 (1,74)	54 (56)	61 (63)
960	6,46 (1,97)	54 (56)	60 (62)

Standard conditions

Notes

• Coupling loss as well as longitudinal attenuation of RADIAFLEX® cables are measured by the free space method according to IEC 61196-4.

• Coupling loss values are measured with a radial (below 300 MHz) or orthogonal (above 300 MHz) orientated dipole antenna.

• The coupling loss values given in brackets are average values of all three spatial orientations (radial, parallel and orthogonal) of dipole antenna.

• Coupling loss values are given with a tolerance of ±5 dB and longitudinal loss values with a tolerance of ±5%.

• In case of a conflict of operational and stop band, please contact RFS for further assistance.

• As with any radiating cable, the performance in building or tunnel environments may deviate from figures based on free space method.

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