Cablewave-RFS HCA78-50J, 7/8" HELIFLEX® Air-Dielectric Coaxial Cable

Cablewave-RFS HCA78-50J, 7/8" HELIFLEX® Air-Dielectric Coaxial Cable

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 this coaxial cable results in highly efficient signal transfer in your RF system.
• Complete Shielding
  The solid outer conductor of this coaxial cable creates a continuous RFI/EMI shield that minimizes system interference.
• Low VSWR
  Standard and low VSWR versions of this coaxial cables contribute to low system noise.
• Outstanding Intermodulation Performance
  Coaxial cable's solid inner and outer conductors virtually eliminate intermods. Intermodulation performance is also guaranteed by the state-of-the-art manufacturing process at the factory.
• High Power Rating
  Low attenuation, outstanding heat transfer properties and temperature stabilized dielectric materials enable cable to provide long operating life at high transmit power levels.
• Wide Range of Application
  Air cables are good choices for telecom, broadcasting, radar and HF defense applications.
• Reinforced Jacket to Sustain Outdoor Applications
  Polyethylene is proven to be strong and reliable even in extreme environmental conditions.

STRUCTURE

• Size: 7/8
• Jacket Color: Black
• Inner Conductor Diameter: mm (in) 9 (0.35)
• Inner Conductor Material: Copper Tube
• Dielectric Diameter: mm (in) 20.2 (0.79)
• Dielectric Material: Helical Polyethylene Spacer
• Outer Conductor Diameter: mm (in) 25.5 (1)
• Outer Conductor Material: Corrugated Copper
• Jacket Diameter: mm (in) 28 (1.103)
• Jacket Material: Polyethylene, PE
• Cable Type: Air-Dielectric, Corrugated

TESTING AND ENVIRONMENTAL

• Fire Performance: Halogene Free
• Flame Retardant Jacket Specifications: Meets the requirements according to: IEC60754-1, IEC60754-2
• Installation Temperature: °C(°F) -40 to 60 (-40 to 140)
• Storage Temperature: °C (°F) -70 to 85 (-94 to 185)
• Operation Temperature: °C(°F) -50 to 85 (-58 to 185)

ELECTRICAL SPECIFICATIONS

• Impedance: Ω 50 +/- 0.5
• Maximum Frequency: GHz 3
• 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: Typical 20.8dB (1.2 VSWR) or better within the operation bands of most global frequency ranges.

MECHANICAL SPECIFICATIONS

• Cable Weight: Nominal kg/m (lb/ft) 0.68 (0.46)
• Minimum Bending Radius, Single Bend: mm (in) 100 (4)
• Minimum Bending Radius, Repeated Bends: mm (in) 250 (10)
• Bending Moment: Nm (lb-ft) 27 (20)
• Tensile Strength: N (lb) 1600 (360)
• Recommended / Maximum Clamp: Spacing m (ft) 0.5 / 0.9 (1.8 / 3)