RG / Aluminum Trunk Cables
Aluminum Trunk Cable — LB412 / LB500 / LB565 / LB625 / LB750
75 Ω aluminum-sheathed CATV trunk cable series covering the LB412, LB500, LB565, LB625 and LB750 sizes. Used as CATV trunk line cable and signal transmission cable for large distribution networks.

Features & Characteristics
- ▪Copper-clad-aluminum inner conductor
- ▪Foamed PE dielectric
- ▪Seamless aluminum outer sheath
- ▪50 ± 3 nF/km capacitance
- ▪75 ± 2 Ω characteristic impedance
- ▪Optional integrated messenger
Applications
- ▪CATV trunk line project
- ▪HFC network signal transmission
- ▪Long-distance broadband distribution
Construction (LB412–LB750)
| Parameter | LB412 | LB500 | LB565 | LB625 | LB750 |
|---|---|---|---|---|---|
| Dielectric (mm) | 9.19 | 11.43 | 13.20 | 14.35 | 17.7 |
| Outer conductor OD (mm) | 10.46 | 12.70 | 14.35 | 15.88 | 19.05 |
| Jacket (mm) | 12.07 | 14.22 | 15.86 | 17.40 | 20.83 |
| Messenger (mm) | 2.77 | 2.77 | 2.77 | 2.77 | 4.78 |
| Capacitance (nF/km) | 50±3 | 50±3 | 50±3 | 50±3 | 50±3 |
| Impedance (Ω) | 75±2 | 75±2 | 75±2 | 75±2 | 75±2 |
| Velocity (%) | 87 | 87 | 87 | 87 | 87 |
Attenuation (dB/100 m)
| Frequency (MHz) | LB412 | LB500 | LB565 | LB625 | LB750 |
|---|---|---|---|---|---|
| 5 | 0.65 | 0.52 | 0.46 | 0.43 | 0.36 |
| 55 | 2.26 | 1.77 | 1.54 | 1.51 | 1.21 |
| 211 | 4.62 | 3.58 | 3.12 | 3.02 | 2.43 |
| 250 | 5.05 | 3.94 | 3.38 | 3.28 | 2.66 |
| 300 | 5.57 | 4.30 | 3.71 | 3.54 | 2.92 |
| 350 | 6.13 | 4.69 | 4.04 | 3.87 | 3.18 |
| 400 | 6.46 | 5.02 | 4.33 | 4.17 | 3.45 |
| 450 | 6.92 | 5.35 | 4.59 | 4.43 | 3.67 |
| 500 | 7.34 | 6.67 | 4.89 | 4.69 | 3.87 |
| 550 | 7.71 | 6.27 | 5.12 | 5.18 | 4.30 |
| 750 | 9.12 | 7.09 | 6.07 | 5.84 | 4.86 |
| 870 | 9.87 | 7.68 | 6.56 | 6.33 | 5.28 |
| 1000 | 10.73 | 8.27 | 7.12 | 6.79 | 5.71 |
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