LCF78-50JFNA
7/8" CELLFLEX® Premium Attenuation Low-Loss Foam-Dielectric Coaxial Cable

Rev : b | Rev date : 18 Feb 2025

CELLFLEX®7/8" premium attenuation low loss flexible cable

FEATURES / BENEFITS

  • Ultra Low Attenuation
    The further reduced attenuation of CELLFLEX® premium attenuation coaxial cable results in extremly efficient signal transfer in your RF system, especially at high frequencies.
  • Complete Shielding
    The solid outer conductor of CELLFLEX® coaxial cable creates a continuous RFI/EMI shield that minimizes system interference.
  • Low VSWR
    Special low VSWR versions of CELLFLEX® coaxial cables contribute to low system noise.
  • Outstanding Intermodulation Performance
    CELLFLEX® 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, CELLFLEX® 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.
  • Meets/Exceeds:   IEC 60754-1, -2; IEC 60332-1-1; IEC 61034-1, -2; IEC 60332-3-24; EN45545-2


Technical features

Applications

ApplicationsIndoor, Wireless Communication, TV & Radio, HF Defense, Microwave, Mobile Radio, Cable Solutions

Structure

Cable TypeFoam-Dielectric, Corrugated
Size7/8
Inner Conductor Diameter mm (in)9.1 (0.358)
Inner Conductor MaterialCopper Tube
Dielectric Diameter mm (in)21.5 (0.846)
Dielectric MaterialFoam Polyethylene
Outer Conductor Diameter mm (in)25.2 (0.992)
Outer Conductor MaterialCorrugated Copper
Jacket Diameter mm (in)27.8 (1.094)
Jacket MaterialBlack Polyethylene, Metalhydroxite Filling

Testing and Environmental

Fire PerformanceFlame Retardant, LS0H
Installation Temperature °C(°F)-15 to 60 (5 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 Ω50 +/- 1
Maximum Frequency GHz5
Velocity %88
Capacitance pF/m (pF/ft)74 (22.5)
Inductance uH/m (uH/ft)0.185 (0.056)
Peak Power Rating kW85
RF Peak Voltage Volts2920
Jacket Spark Volt RMS8000
Inner Conductor dc Resistance Ω/1000 m (Ω/1000 ft)2.04 (0.62)
Outer Conductor dc Resistance Ω/1000 m (Ω/1000 ft)1.55 (0.472)
Passive Intermodulation PIM typ. dBc-160
Return Loss (VSWR) PerformanceStandard 20dB (1.222) / Premium 23/24dB (1.152/1.135) on specified frequencies
Phase Stabilized

Phase stabilized and phase matched cables and assemblies are available upon request.

Mechanical Specifications

Cable Weight, Nominal kg/m (lb/ft)0.46 (0.309)
Minimum Bending Radius, Single Bendmm (in)120 (5)
Minimum Bending Radius, Repeated Bendsmm (in)250 (10)
Bending Moment Nm (lb-ft)13 (10)
Tensile Strength N (lb)1440 (324)
Recommended / Maximum Clamp Spacing m (ft)0.8 / 1 (2.75 / 3.25)

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

Frequency, MHzdB per 100mdB per 100ftPower, kW
100 1.17 0.36 8.50
200 1.68 0.51 5.92
450 2.58 0.79 3.85
700 3.28 1 3.03
800 3.53 1.08 2.82
900 3.76 1.15 2.64
1800 5.55 1.70 1.79
2000 5.89 1.80 1.69
2200 6.23 1.90 1.60
2400 6.55 2 1.52
2700 7.01 2.14 1.42
3000 7.46 2.28 1.33
3500 8.17 2.49 1.22
4000 8.84 2.70 1.12
5000 10.11 3.09 0.98

External Document Links

Notes

  • Notes LCF78-50JFNTC: TC cables (temperature cycled) are cables that are aged in order to reduce hysteresis effects. Available upon request.
  • Europe ordering code:

LCF78-50JFNA-1-50: LCF78-50JFN, 50m length, Carton

LCF78-50JFNA-1-500: LCF78-50JFN, 500m length, Drum 11-077-X

LCF78-50JFNA-3-500: LCF78-50JFN, CoO China, 500m length, Drum standard