Coaxial Cables > TELESCOPE CABLES
540 Series Cable Construction & Dimensions
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| Component |
Standro |
Trishield |
QuadShield |
| Diameter of Inner conductor (mm) |
3.15 ± 0.04 |
3.15 ± 0.04 |
3.15 ± 0.04 |
| Diameter of Dielectric (mm) |
13.0 ± 0.04 |
13.0 ± 0.04 |
13.0 ± 0.04 |
| Diameter of outer conductor <= (mm) |
13.70 |
13.70 |
13.70 |
| Thickness >= |
/ |
0.64 |
0.35 |
| Diameter of Jackets <= (mm) |
16.40 |
16.60 |
16.40 |
| Steel wire weight (Kg / Km) |
140 |
197 |
197 |
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Note :
- Our Conductor Thickness of non-bonded Aluminium tube is 0.20
- Thickness of extruding Aluminium tube is 0.64mm.
- Thickness of welding Aluminium tube is 0.35mm.
- Coverage of 2nd outer conductor is 40%, 50%, 60%. We can provide special demand for client.
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540 Attenuation
| Frequence(Mhz) |
Max Value (dB/100m) |
| 5 |
0.60 |
| 50 |
1.70 |
| 55 |
1.80 |
| 200 |
3.40 |
| 211 |
3.50 |
| 300 |
4.20 |
| 400 |
4.85 |
| 450 |
5.15 |
| 550 |
5.70 |
| 600 |
6.00 |
| 750 |
6.70 |
| 800 |
6.89 |
| 860 |
7.20 |
| 1000 |
7.80 |
| 1350 |
9.20 |
| 1750 |
10.69 |
| 2150 |
11.98 |
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540 Electrical Performance
| DC Resistance of Inner Conductor (ohms/km) |
3.6 CCA 2.2 BS |
| DC Resistance of Outer Conductor (ohms/km) |
19 AL 12TC |
| Impedance (ohms) |
75±2.0 |
| Capacitance(pF/m) |
50±3.0 |
| Wave velocity rate% |
86% |
| Return Loss (>=db) |
VHF 5-300 MHz >= |
20dB |
| UHF 300-960 MHz >= |
18dB |
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