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    RG 11URM (URM 57)

    Construction

    Inner conductor 

    Plain copper 

    1.15 mm 

    Dielectric 

    Low density PE 

    Φ7.25 ± 0.18 mm 

    Outer conductor (shield) 

    Plain copper 

    192 x 0.18 mm 

    Shield coverage 

     

    97%

    Sheath 

    PVC or LSZH 

    Φ10.3 ± 0.18 mm 

    Electrical & Mechanical Characteristics

    Impedance 

    75±5 Ohm 

    Nominal capacitance 

    67 pF/m 

    Velocity of propagation 

    66%

    Insulation resistance 

    >2000 Mohm.Km 

    Inner conductor resistance 

    16.6 Ohm/Km 

    Outer conductor resistance 

    4.5 Ohm/Km 

    Operating temperature range

     -30 °C - +70 °C 

    Copper weight 

    58.3 Kg/Km 

    Cable weight (approx.) 

    146.7 Kg/Km 

    Screening effectiveness 

    >55 dB 

    Attenuation

    Frequency(MHz) 50 

    Attenuation (dB/100 m) 3.8 

    Attenuation (dB/100ft) 1.16 

    100

    5.5

    1.68

    200

    8.2

    2.5

    400

    12

    3.66

    500

    13.6

    4.15

    600

    15

    4.57

    860

    18.8

    5.73

    1000

    20.7

    6.31

    Return Loss

    30-300 MHz 

    >30dB

    300-600 MHz 

    >27dB

    600-900 MHz 

    >25dB 

     

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