Semi-Finished Coaxial Cable RG59 CU/48/AL
Type: 75 Ohm Video Coaxial Cable Core
Stage: Semi-finished (without outer jacket)
Conductor Type: Solid Bare Copper (CU)
Shielding: 48-strand Aluminum Braid + Aluminum Foil
1. Construction Details
| Layer | Material | Specification | Description |
|---|---|---|---|
| Inner Conductor | Solid Bare Copper (CU) | Ø 0.81 mm ± 0.01 mm | Superior conductivity, low attenuation, stable signal transmission |
| Dielectric | Physical Foamed Polyethylene (PE) | Ø ~3.66 mm ± 0.10 mm | Maintains impedance and reduces signal loss |
| First Shield | Aluminum Foil (Bonded or Unbonded) | 100% coverage | EMI isolation and shielding of core signal |
| Second Shield (Braid) | Aluminum Wire – 48 strands (Ø 0.12 mm) | Braid coverage: ~35–45% | Additional EMI protection and mechanical strength |
| Outer Jacket | Not included (semi-finished) | —— | To be applied as per application needs: PVC/PE/FR-LSZH |
2. Electrical & Performance Characteristics
| Parameter | Typical Value |
|---|---|
| Characteristic Impedance | 75 ± 3 ohms |
| Capacitance | ~53 pF/m |
| Velocity of Propagation | ~85% |
| Return Loss (5–1000 MHz) | ≥ 20 dB |
| Attenuation @ 100 MHz | ~6.8 dB/100m |
| Shielding Effectiveness | ≥ 40 dB |
3. Recommended Applications
High-quality analog CCTV surveillance systems
Video baseband and RF signal transmission
Broadcast and AV distribution
OEM coaxial cable manufacturing
4. Customization Upon Jacket Extrusion
Once the final outer sheath is applied, the cable can be tailored for specific markets:
Jacket Material:
PVC – flexible indoor use
PE – UV-resistant outdoor use
LSZH or FR-PVC – for flame-rated installations (CPR Dca/Eca)
Color Coding: Black, white, grey, or custom
Markings: Sequential meter marking, customer brand printing, CE/RoHS/CPR label
5. Packaging & Delivery Format
Supplied as semi-finished core wound on 500m or 1000m drums (wooden or plastic)
Suitable for further processing in high-speed extrusion lines
6. Advantages of CU/48/AL Structure
Copper conductor offers better performance than CCS, especially over long runs
Aluminum braid balances cost and weight
Suitable for medium-grade installations where both performance and price matter
