Coaxial Cable Specifications

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Weight of cable

Copper-on-copper 7 mm coax weighs 47.7g/m (4.77 kg/100m)

Copper-on-aluminium 7 mm coax weighs 42.5g/m (4.25 kg/100m)

  • An empty cardboard 100m reel weighs (typically) 200g.

    250m reels are normally made from wood and weigh a lot more.

    Cable type--->

    WF125 foam

    WF100 foam

    CT100, H109, WC100

    CT63, WF65 shotgun

    Dia. mm

    7.1

    6.8

    6.8

    4.0

    Weight gm/metre

    51

    47

    47.7

    56 (twin)

    Min, bend dia. mm

    100

    80

    80

    50

    Nom DC resistance ‡/Km inner (outer) conductor

    15(9)

    26 (10)

    26 (10)

    50 (13)

    Nominal characteristic impedance (Ohms)

    75

    75

    75

    75

    Nominal capacitance (pF/m)

    53.5

    55

    55

    55

    Minimum 10-450 MHz

    20

    20

    20

    RLR 451-1000 MHz

    18

    18

    18

    (dB) 1001-1800 MHz

    17

    17

    17

    Minimum screening effectiveness (dB)

    85

    85

    85

    Frequency

    Nominal attenuation ±5% dB/100m

    5 MHz

    1.3

    1.3

    2.3

    SW

    50 MHz

    3.6

    4.3

    4.3

    7.2

    100 MHz

    5.1

    6.1

    6.1

    10.2

    FM

    200 MHz

    7.8

    8.6

    8.6

    14.4

    VHF

    450 MHz

    11.4

    13.2

    13.2

    21.6

    UHF

    600 MHz

    12.9

    15.4

    15.4

    25

    860 MHz

    15.7

    18.7

    18.7

    30.5

    1000 MHz

    17.1

    20

    20

    33.01

    LNB

    1200 MHz

    18.5

    22

    22

    36.4

    1500 MHz

    21

    24.7

    24.7

    41.1

    1750 MHz

    23.3

    26.9

    26.9

    44.6

    2050 MHz

    27

    29.4

    29.4

    48.6

    3000 MHz

    33

    36.2

    36.2

    60.5

    We sell these cables on reels or cut to length, with or without "F" connectors fitted. See catalogue page 8.


    Copyright ©2003-2011 Martin Pickering
    Updated on August 31, 2011
    This file may be downloaded for private and personal use but NO part of it may be published in any form without the prior permission of the author.

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