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 |