Semi-Finished Coaxial Cable – RG59 CU/64/AL
Type: 75 Ohm Coaxial Core (Unjacketed)
Conductor: Solid Bare Copper (CU)
Shielding: Aluminum Foil + 64-Strand Aluminum Braid
Manufacturing Stage: Semi-finished core (requires final jacket extrusion)
1.Construction Specifications
| Layer | Material | Specification | Description |
|---|---|---|---|
| Inner Conductor | Solid Bare Copper (CU) | Ø 0.81 mm ± 0.01 mm | Excellent conductivity, minimal attenuation over distance |
| Dielectric | Foamed Polyethylene (PE) | Ø ~3.66 mm ± 0.10 mm | Maintains impedance; lightweight, low dielectric constant |
| First Shield | Aluminum-Mylar Foil | 100% coverage | Effective high-frequency EMI shielding |
| Second Shield (Braid) | 64 x 0.12 mm Aluminum Wires | ~40–60% coverage | Improved interference protection vs. 48-braid; mechanical robustness |
| Outer Jacket | Not included (semi-finished) | — | Final sheathing to be applied by manufacturer (PVC, PE, LSZH, etc.) |
2. Typical Electrical Characteristics
| Parameter | Typical Value |
|---|---|
| Impedance | 75 ± 3 Ω |
| Capacitance | ~53 pF/m |
| Velocity of Propagation | ~85% |
| Attenuation @ 100 MHz | ~6.2 dB/100m |
| Return Loss | ≥ 20 dB (5–1000 MHz) |
| Shielding Effectiveness | ≥ 45 dB |
3. Recommended Applications
High-definition analog CCTV systems (AHD/TVI/CVI)
Baseband video and composite video transmission
Video distribution in buildings or commercial complexes
Custom assembly for OEM coaxial cable production
4. Post-Processing Customization Options
When jacketed, the finished cable can be adapted to meet:
Environmental Requirements:
PVC for indoor use
PE for outdoor/UV exposure
LSZH/FR for CPR compliance (Dca/Eca as needed)
Branding:
Customized printing, sequential meter marking, CE/RoHS labels
Color and Packaging:
Black, white, or custom colors
500m or 1000m drums (wooden or plastic reels)
5. Advantages of CU/64/AL over CU/48/AL
| Feature | CU/48/AL | CU/64/AL |
|---|---|---|
| Shielding Coverage | Moderate | Enhanced |
| EMI Protection | Standard | Improved |
| Use Case | Entry-Level CCTV | Mid-to-High-End CCTV |
| Cost | Lower | Slightly Higher |
