FinMark 540 series trunk coaxial cable

FinMark 540 series trunk coaxial cable

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    Description

    Designation Description Cable weight, kg/km Shipping weight, kg/km
    QR 540 JCA Copper-clad aluminium centre conductor, solid tube outer conductor, polyethylene jacket. 137 190
    QR 540 JCAM109 Self-supporting aerial cable with figure-8 messenger wire. 196 257

    Cable element dimensions:

     
    Element mm
    Nominal centre conductor diameter 3.15
    Nominal diameter over dielectric 13.03
    Nominal diameter over outer conductor 13.72
    Nominal outer conductor thickness 0.343
    Nominal diameter over jacket 15.49
    Nominal jacket wall thickness 0.89
    Steel messenger wire diameter (for messenger version) 2.77

    Mechanical characteristics:

    • Minimum bending radius: 10.2 cm;
    • Maximum tensile force: 100 kgf;
    • Minimum messenger wire breaking force: 816 kgf.

    Electrical characteristics:

    • Capacitance, nF/km: 50 ± 3.0;
    • Characteristic impedance, Ohm: 75 ± 2;
    • Velocity of propagation, %: 88.

    Maximum DC resistance (at 20°C):

    Copper-clad
    Inner conductor 3.34 Ohm/km
    Outer conductor 1.94 Ohm/km
    Loop resistance 5.28 Ohm/km
    Solid copper
    Inner conductor 2.20 Ohm/km
    Outer conductor 1.94 Ohm/km
    Loop resistance 4.14 Ohm/km

    Attenuation (at 20°C):

    Frequency, MHz Nominal, dB/100 m Maximum, dB/100 m
    5 0.43 0.46
    30 1.12 1.12
    45 1.35 1.35
    50 1.41 1.44
    55 1.48 1.54
    83 1.80 1.90
    108 2.07 2.17
    150 2.43 2.59
    181 2.76 2.89
    193 2.85 2.95
    211 2.99 3.12
    220 3.05 3.22
    250 3.25 3.38
    270 3.38 3.51
    300 3.54 3.71
    325 3.71 3.87
    350 3.84 4.03
    375 4.00 4.17
    400 4.13 4.33
    425 4.27 4.49
    450 4.44 4.59
    500 4.63 4.89
    550 4.95 5.12
    600 5.23 5.38
    750 5.92 6.07
    865 6.23 6.56
    1000 6.91 7.12