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Coaxial Cables > TELESCOPE CABLES
412 Series Cable Construction & Dimensions
Component Standro Trishield QuadShield
Diameter of Inner conductor (mm)  2.15 ± 0.03 2.15 ± 0.03 2.15 ± 0.03
Diameter of  Dielectric (mm) 9.00 ± 0.30 9.00 ± 0.30 9.00 ± 0.30
Diameter of  1st outer conductor <= (mm) 9.40 10.30 9.70
Thickness >= / 0.64 0.35
Diameter of  2nd outer conductor <= (mm) 9.70 / /
Diameter of Jackets <= (mm) 12.30 12.60 12.30
Approximate Weight (Kg / Km) 90(115) 145 105
Diameter of messenger steel wire (mm) 2.13 2.13 2.13
Steel wire weight (Kg / Km) 30 30 30
Note :
  1. Material of 1st out conductor is bonded foil, non-bonded foil, Thickness of extruding Aluminium tube is 0.64mm.Thickness of welding Aluminium tube is 0.35mm.
  2. Coverage of 2nd outer conductor is 40%, 50%, 60%. We can provide special demand for client.
 
412 Attenuation
Frequence(Mhz) Max Value (dB/100m)
5 0.75
50 2.40
55 2.52
200 5.00
211 5.20
300 6.20
400 7.23
450 7.60
550 8.50
600 9.00
750 10.10
800 10.64
860 10.80
1000 11.70
1350 13.86
1750 15.78
2150 17.48
412 Electrical Performance
DC Resistance of Inner Conductor (ohms/km) 7.9 CCA 4.75BC
DC Resistance of Outer Conductor (ohms/km) 22 AL           15TC
Impedance (ohms) 75±3.0
Capacitance(pF/m) 52±3.0
Wave velocity rate% 86%
Return Loss (>=db) VHF 5-300 MHz >= 20dB
UHF 300-960 MHz >= 18dB

 
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