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 |
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Note :
- 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.
- 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 |
|
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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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