RG / Aluminum Trunk Cables
Aluminum Trunk Cable — LB540 / LB715 / LB860
Larger 75 Ω aluminum-sheathed CATV trunk cables LB540, LB715 and LB860 for high-capacity CATV backbone routes. Delivers lower attenuation than the LB412–LB750 range at correspondingly larger outer dimensions.
Features & Characteristics
- ▪Copper-clad-aluminum inner conductor
- ▪Foamed PE dielectric
- ▪Seamless aluminum outer sheath
- ▪Integrated messenger option
- ▪75 ± 2 Ω characteristic impedance
Applications
- ▪CATV trunk backbone
- ▪HFC / broadband long-haul distribution
Construction (LB540 / LB715 / LB860)
| Parameter | LB540 | LB715 | LB860 |
|---|---|---|---|
| Inner conductor OD (mm) | 3.15 | 4.22 | 5.16 |
| Dielectric (mm) | 13.03 | 17.42 | 21.03 |
| Outer conductor OD (mm) | 13.72 | 18.16 | 21.84 |
| Jacket (mm) | 15.49 | 19.94 | 24.38 |
| Messenger (mm) | 2.77 | 4.78 | 4.78 |
| Capacitance (nF/km) | 50±3 | 50±3 | 50±3 |
| Impedance (Ω) | 75±2 | 75±2 | 75±2 |
| Velocity (%) | 87 | 87 | 87 |
Attenuation (dB/100 m)
| Frequency (MHz) | LB540 | LB715 | LB860 |
|---|---|---|---|
| 5 | 0.46 | 0.36 | 0.30 |
| 55 | 1.54 | 1.18 | 1.05 |
| 211 | 3.12 | 2.43 | 2.10 |
| 250 | 3.38 | 2.66 | 2.30 |
| 300 | 3.71 | 2.92 | 2.49 |
| 350 | 4.03 | 3.18 | 2.72 |
| 400 | 4.33 | 3.44 | 2.89 |
| 450 | 4.59 | 3.67 | 3.12 |
| 500 | 4.89 | 3.90 | 3.28 |
| 550 | 5.12 | 4.10 | 3.48 |
| 750 | 6.07 | 4.89 | 4.07 |
| 870 | 6.56 | 5.31 | 4.36 |
| 1000 | 7.12 | 5.74 | 4.72 |
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Aluminum Trunk Cable — LB412 / LB500 / LB565 / LB625 / LB750
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