Overview
Cablewave-RFS HCA78-50JPLB 7/8" HELIFLEX® Air-Dielectric Coaxial Cable 50 ohm, Plenum Rated, Black Jacket
7/8" low loss air dielectric cable, plenum rated, UV resistant black PVC Jacket, applicable to both outdoor and indoor applications.
RFS Technologies' air dielectric cables are air filled coaxial cables which consist of an inner conductor and an outer conductor. A dielectric helix is used to center the inner conductor to the outer conductor. Air dielectric cables have low attenuation and high power rating which make them perfect choice of high RF power transmission lines, such as in FM, TV and radar systems and networks. Air cables also have better flexibility and crush resistance than other solutions such as rigid lines.
- Low Attenuation: The low attenuation of HELIFLEX® coaxial cable results in highly efficient signal transfer in your RF system.
- Complete Shielding: The solid outer conductor of HELIFLEX® coaxial cable creates a continuous RFI/EMI shield that minimizes system interference.
- Low VSWR: Special low VSWR versions of HELIFLEX® coaxial cables contribute to low system noise.
- Outstanding Intermodulation Performance: HELIFLEX® coaxial cable's solid inner and outer conductors virtually eliminate intermods. Intermodulation performance is also confirmed with state-of-the-art equipment at the RFS factory.
- High Power Rating: Due to their low attenuation, outstanding heat transfer properties and temperature stabilized dielectric
materials, HELIFLEX® cable provides safe long term operating life at high transmit power levels. - Wide Range of Application: Typical areas of application are: feedlines for broadcast and terrestrial microwave antennas, wireless cellular, PCS and ESMR base stations, cabling of antenna arrays, and radio equipment interconnects.
Specifications
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TESTING AND ENVIRONMENTAL |
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Fire Performance | Flame Retardant, Plenum Rated | |
Flame Retardant Jacket Specifications | Meets the requirements according to: IEC60754-1, IEC60754-2 | |
Installation Temperature | °C(°F) | -25 to 60 (-13 to 140) |
Storage Temperature | °C (°F) | -60 to 85 (-76 to 185) |
Operation Temperature | °C(°F) | -40 to 85 (-40 to 185) |
ELECTRICAL SPECIFICATIONS |
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Impedance | Ω | 50 +/- 0.5 | ||
Maximum Frequency | GHz | 4.2 | ||
Velocity | % | 93 | ||
Capacitance | pF/m (pF/ft) | 71 (21.6) | ||
Inductance | uH/m (uH/ft) | 0.178 (0.054) | ||
Peak Power Rating | kW | 73 | ||
RF Peak Voltage | Volts | 2700 | ||
Jacket Spark | Volt RMS | 8000 | ||
Inner Conductor dc Resistance | Ω/1000 m (Ω/1000 ft) | 1.1 (0.34) | ||
Outer Conductor dc Resistance | Ω/1000 m (Ω/1000 ft) | 0.88 (0.27) | ||
Return Loss (VSWR) Performance | Standard | |||
Min. Return Loss (Max. VSWR) | dB (VSWR) | Typical 20.8dB (1.2 VSWR) or better within the operation bands of most global frequency ranges. Premium also available. Contact factory for options in your specific frequency band. | ||
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Phase Stabilized |
Phase stabilized and phase matched cables and assemblies are available upon request. |
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Temperature & Power | Standard | |||
MECHANICAL SPECIFICATIONS |
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Cable Weight, Nominal | kg/m (lb/ft) | 0.68 (0.46) | kg/m (lb/ft) | 0.68 (0.46) |
Minimum Bending Radius, Single Bend | mm (in) | 100 (4) | mm (in) | 100 (4) |
Minimum Bending Radius, Repeated Bends | mm (in) | 250 (10) | mm (in) | 250 (10) |
Bending Moment | Nm (lb-ft) | 27 (20) | Nm (lb-ft) | 27 (20) |
Tensile Strength | N (lb) | 1600 (360) | N (lb) | 1600 (360) |
Recommended / Maximum Clamp Spacing | m (ft) | 0.5 / 0.9 (1.8 / 3) | m (ft) | 0.5 / 0.9 (1.8 / 3) |