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HCA78-50JPL
7/8" Air Dielectric Cable

Rev : J | Rev date : 29 Aug 2024

7/8" low loss air dielectric cable; Plenum-rated

FEATURES / BENEFITS

  • Low Attenuation
    The low attenuation of air dielectric coaxial cable results in highly efficient signal transfer in your RF system.
  • Complete Shielding
    The solid outer conductor of air dielectric coaxial cable creates a continuous RFI/EMI shield that minimizes system interference.
  • Low VSWR
    Special low VSWR versions of air dielectric coaxial cables contribute to low system noise.
  • Outstanding Intermodulation Performance
    Air dielectric 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 Technologies factory.
  • High Power Rating
       Due to their low attenuation, outstanding heat transfer properties and temperature stabilized dielectric materials, air dielectric coaxial 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.


7/8" Air Dielectric Coaxial Cable

Technical features

Applications

ApplicationsWireless CommunicationTV & RadioHF DefenseMobile RadioCable Solutions

Structure

Cable TypeAir-Dielectric, Corrugated
Size7/8
Jacket OptionBlue
Inner Conductor Diameter mm (in)9 (0.35)
Inner Conductor MaterialCopper Tube
Dielectric Diameter mm (in)20.2 (0.79)
Dielectric MaterialHelical Polyethylene Spacer
Outer Conductor Diameter mm (in)25.5 (1)
Outer Conductor MaterialCorrugated Copper
Jacket Diameter mm (in)28 (1.103)
Jacket MaterialPolyvinylidene Fluoride, PVDF

Testing and Environmental

Fire PerformanceFlame Retardant, Plenum Rated
Flame Retardant Jacket SpecificationsMeets/Exceeds Steiner Tunnel Test Method UL 910, NEC 820-53 (a) CATVP, NFPA-262.
Installation Temperature °C(°F)-40 to 60 (-40 to 140)
Storage Temperature °C (°F)-40 to 85 (-40 to 185)
Operation Temperature °C(°F)-50 to 85 (-58 to 185)

Electrical Specifications

Impedance Ω50 +/- 0.5
Maximum Frequency GHz4.2
Velocity %93
Capacitance pF/m (pF/ft)71 (21.6)
Inductance uH/m (uH/ft)0.178 (0.054)
Peak Power Rating kW73
RF Peak Voltage Volts2700
Jacket Spark Volt RMS8000
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) PerformanceStandard
Min. Return Loss (Max. VSWR)dB (VSWR)21 (1.195) @ 698-798 MHz
21 (1.195) @ 824-960 MHz
21 (1.195) @ 1695-1780 MHz
21 (1.195) @ 1850-2020 MHz
21 (1.195) @ 2110-2200 MHz
21 (1.195) @ 2305-2320 MHz
21 (1.195) @ 2345-2360 MHz
21 (1.195) @ 2496-2700 MHz
18 (1.288) @ 2700-3000 MHz
15 (1.432) @ 3550-3700 MHz
13 (1.576) @ 3700-3900 MHz
11 (1.784) @ 3980-4200 MHz
Temperature & PowerStandard

Mechanical Specifications

Cable Weight, Nominal kg/m (lb/ft)0.68 (0.46)
Minimum Bending Radius, Single Bendmm (in)100 (4)
Minimum Bending Radius, Repeated Bendsmm (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)

Attenuation @ 20°C (68°F) and Power Rating @ 40°C (104°F)

Frequency, MHzdB per 100mdB per 100ftPower, kW
0.5 0.08 0.03 73
1 0.12 0.04 73
1.5 0.14 0.04 70.90
2 0.16 0.05 61.40
10 0.37 0.11 27.30
20 0.52 0.16 19.20
30 0.64 0.19 15.70
50 0.83 0.25 12.10
88 1.10 0.34 9.11
100 1.18 0.36 8.49
108 1.23 0.37 8.15
150 1.45 0.44 6.92
174 1.57 0.48 6.39
200 1.69 0.51 5.94
300 2.08 0.63 4.84
400 2.42 0.74 4.17
450 2.57 0.79 3.93
500 2.72 0.83 3.71
512 2.76 0.84 3.66
600 3 0.91 3.37
700 3.25 0.99 3.12
800 3.49 1.07 2.91
824 3.55 1.08 2.86
894 3.71 1.13 2.74
900 3.72 1.13 2.74
925 3.78 1.15 2.69
960 3.85 1.17 2.65
1000 3.94 1.20 2.59
1250 4.45 1.36 2.30
1500 4.91 1.50 2.10
1700 5.26 1.60 1.97
1800 5.43 1.65 1.91
2000 5.75 1.75 1.81
2200 6.07 1.85 1.72
2300 6.22 1.90 1.68
3000 7.22 2.20 1.47
3550 8.33 2.54 1.35
3700 8.53 2.60 1.32
3900 8.79 2.68 1.29
3980 8.89 2.71 1.27
4000 8.92 2.72 1.27
4200 9.17 2.79 1.24

External Document Links

Notes