Description:Inner conductor: 2.77mm copper clad aluminum
Dielectric: 11.43mm foamed PE
Outer conductor: 12.70mm extruded aluminum tube
Sheath jacket: 14.48mm black PE
Messenger: 2.77mm galvanized steel
Characteristics:
Capacitance: 50pF/m
Impedance: 75 ± 3 ohms
DC loop resistance: 5.58Ω/km
Inner conductor DC resistance: 4.40Ω/km
Outer conductor DC resistance: 1.18Ω/km
Velocity: 87% 

Frequency                                      Attenuation
  (MHz)                                            (dB/100M)
     5                                                        0.52
    30                                                       1.30
    55                                                       1.79
   211                                                      3.59
   270                                                      4.09
   300                                                      4.34
   325                                                      4.52
   400                                                      5.04
   450                                                      5.40
   500                                                      5.69
   550                                                      5.98
   750                                                      7.09
   865                                                      7.79
  1000                                                     8.29

500JCAM Trunk Cable CCA or Cu, Fomed PE, Extruded AL Tube, Black PE Jacket, Steel Messenger from China supplier

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