UHF Leaky Feeder Cable

A UHF (Ultra-High Frequency) leaky feeder cable is designed for transmitting and receiving radio signals in underground or confined areas such as mines, tunnels, and buildings. It plays a crucial role in maintaining reliable wireless communication in challenging environments by enabling signals to propagate and reach areas that would otherwise be inaccessible for direct communication.

Features

Construction Material

  • Inner Conductor: Copper-clad Aluminum, 4.8 ± 0.02 mm diameter
  • Insulation: Foam PE, 12.20± 0.2 mm diameter
  • Outer Conductor: Corrugated copper tube, Milled slots, 13.80± 0.2 mm diameter
  • Jacket: PE /LSZH, Black, 15.80± 0.2 mm diameter

Electrical Properties

  • Impedance: 50 ohm ± 2.0 ohm
  • Capacitance: 75 pF/m
  • Velocity: 88%
  • Insulation Resistance: 10000 MΩ/km
  • Isolation Voltage: 6 kV
  • V.S.W.R: ≤ 1.30 (0-2400MHz)

Mechanical Properties

  • Bend Radius Min.: 90 mm
  • Tensile Strength: 1100 N
  • Recommended temperature:
    • Storage: -40~+80°C
    • Installation: -40~+80°C
    • Operating: -40~+80°C

Signal

Attenuation and Average Power

Frequency

MHz

Attenuation

@20°C dB/100m

    Coupling loss

@20°C dB

75 2.20 63 / 74
150 3.10 67 / 77
450 5.70 71 / 83
800 7.80 75 / 86
900 8.30 74 / 85
1800 13.50 71 / 82
2200 14.70 73 / 84
2400 15.50 71 / 83

Max. attenuation value shall be 105% of the nominal attenuation value.

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