RCF78-50JFNAL
7/8" RCF RADIAFLEX Cable, Halogen Free, Flame/Fire Retardant, Low Smoke, Aluminum Outer Conductor
Rev : P1 | Rev date : 11 May 2026
- 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 aluminum 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 corrugated copper or aluminum outer conductor which offers a combination of remarkable flexibility, high strength and excellent electrical performance.
FEATURES / BENEFITS
- Broadband radiating cable supporting all wireless application between 30 MHz to 3800 MHz
- Ideally suited for application that require low bending radius
- Robust radiating cable operational under all enviromental conditions as e.g. harsh tunnels or mines
General Specifications |
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| Size | | 7/8 |
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Electrical Specifications |
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| Max. Operating Frequency | MHz | 3800 | | Cable Type | | RCF | | Impedance | Ohm | 50 +/- 2 | | Velocity, percent | % | 88 | | Capacitance | pF/m (pF/ft) | 75 (22.9) | | DC-resistance inner conductor, ohm/km (ohm/1000ft) | Ω/km (Ω/1000ft) | 2.3 (0.7) | | DC-resistance outer conductor, ohm/km (ohm/1000ft) | Ω/km (Ω/1000ft) | 1.9 (0.58) | | Stop bands | MHz | None | | Frequency Selection | MHz | 600, 900, 1800/1900, 2200, 2400, 2500, 2700 |
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Mechanical Specifications |
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| Jacket | | Flame Retardant | | Jacket Color | | Standard Black, other colors on request | | Jacket Description | | Halogen free, non corrosive, flame retardant, low smoke | | Slot Design | | Milled (Two-Row) | | Inner Conductor Material | | Copper Tube | | Outer Conductor Material | | Annularly Corrugated Aluminum | | Diameter Inner Conductor | mm (in) | 9.4 (0.37) | | Diameter Outer Conductor | mm (in) | 25.2 (0.99) | | Diameter over Jacket Nominal | mm (in) | 28 (1.1) | | Minimum Bending Radius, Single Bend | mm (in) | 250 (10) | | Cable Weight | kg/m (lb/ft) | 0.42 (0.29) | | Tensile Force | N (lb) | 1400 (315) | | Recommended / Maximum Clamp Spacing | m (ft) | 0.9 (3) | | Minimum Distance to Wall | mm (in) | 50 (2) |
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Testing and Environmental |
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| Jacket Testing Methods | | 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 |
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Temperature Specifications |
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| Storage Temperature | °C(°F) | -10 to 50 (14 to 122 ) | | Installation Temperature | °C(°F) | -25 to 60 (-13 to 140 ) | | Operation Temperature | °C(°F) | -40 to 85 (-40 to 185 ) |
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Attenuation |
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| Frequency, MHz | Longitudinal Loss, dB/100 m (dB/100 ft) | Coupling Loss 50%, dB | Coupling Loss 95%, dB |
| 75 |
1.23 (0.37) |
60 |
69.8 |
| 150 |
1.85 (0.56) |
71.3 |
80.5 |
| 450 |
3.52 (1.07) |
60.2 |
69.9 |
| 800 |
4.87 (1.48) |
76.7 |
88.3 |
| 870 |
5.09 (1.55) |
73.2 |
84.6 |
| 900 |
4.71 (1.44) |
72.7 |
83.9 |
| 960 |
5.38 (1.64) |
72.1 |
83.2 |
| 1800 |
7.79 (2.37) |
77.1 |
88.8 |
| 1900 |
8.04 (2.45) |
74.2 |
86.1 |
| 2000 |
78.31 (2.53) |
72.7 |
84.8 |
| 2200 |
8.85 (2.7) |
70.5 |
83.3 |
| 2400 |
9.44 (2.88) |
70.3 |
83 |
| 2600 |
10.03 (3.06) |
69.8 |
81.9 |
| 2700 |
10.28 (3.13) |
69 |
80.8 |
| 3200 |
11.84 (3.61) |
64 |
78.8 |
| 3300 |
12.57 (3.83) |
65.5 |
79.2 |
| 3400 |
12.51 (3.81) |
67.6 |
81.1 |
| 3500 |
11.62 (3.54) |
67.6 |
80.5 |
| 3600 |
12.07 (3.68) |
66.1 |
79.8 |
| 3700 |
12.21 (3.72) |
66.4 |
79.7 |
| 3800 |
12.15 (3.7) |
66.7 |
79.8 |
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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 average values of all three spatial orientations (radial, parallel and orthogonal) of dipole antenna.
- Coupling loss values are given with a tolerance of +10 dB and longitudinal loss values with a tolerance of +5%. Note: Measured values below nominal are better. They are not limited by any tolerance-range.
- As with any radiating cable, the performance in building or tunnel environments may deviate from figures based on free space method.
