QR540M

QR540M

It is widely used in cable TV, digital TV, CCTV, video transmission, security system and satellite TV. Trunk cable, branch distribution cable.

QR540M Details

Construction

Item Material Diameter(Inch/mm)
Inner Conductor CCA-Copper Clad Aluminujm 0.124 3.15
Dietectric Foam PE 0.514 13.05
Shield Solid Aluminum tube 0.540 13.72
Thickness 0.014 0.34
Jacket PE 0.610 15.49
Messenger Galvanized Steel 0.109 2.77

 

Electrical Characteristics

Capacitance(pF/m) 52+/-2
Impedance(Ω) 75+/-3
Velocity of Propagation(%) 87.0
Return Loss(dB) ≥22
Screening Effectiveness(dB) ≥100

 

Attenuation(@20℃)

Frequency(MHz) Max Attenuation(dB/100ft) Max Attenuation(dB/100m)
5 0.14 0.46
55 0.47 1.54
83 0.58 1.90
211 0.95 3.12
250 1.03 3.38
300 1.13 3.71
350 1.23 4.04
400 1.32 4.33
500 1.49 4.89
600 1.64 5.38
750 1.85 6.07
865 2.00 6.56
1000 2.17 7.12

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