A direct burial coaxial cable is a specially designed coax cable that can be buried underground without requiring additional conduit. It’s primarily used for satellite TV, cable TV, internet connections, and CCTV systems in outdoor environments. Unlike standard indoor coax cables, direct burial coax features enhanced protection against moisture, soil chemicals, and physical damage to ensure long-lasting performance underground.
Direct Burial Coaxial Cable
Key Features of Direct Burial Coaxial Cable
Waterproof Outer Jacket
Made from polyethylene (PE) or UV-resistant PVC to withstand outdoor conditions.Flooded Core or Gel Layer
Prevents water ingress that could corrode the copper conductor.UV and Weather Resistance
Essential for areas exposed to sunlight before burial.Armor Option
Some versions have an aluminum or steel armor layer for extra durability.Low Signal Loss
Maintains consistent performance over long runs.
Common Applications
Satellite TV (DirecTV, Dish Network)
Cable TV and Internet Connections
Outdoor Security Camera Systems
Antenna Installations
Long-Distance Outdoor Runs Without Conduit
Types of Direct Burial Coaxial Cable
RG6 Direct Burial Coax
Most common for TV and internet.
Dual or quad-shielded for low interference.
RG11 Direct Burial Coax
Thicker, lower signal loss, great for long runs.
Armored Coax
Includes metal armor for rodent and physical protection.
Installation Tips
Recommended Burial Depth:
6–18 inches depending on local codes.Use Drip Loops:
To prevent water from entering equipment connections.Mark the Route:
Place warning tape above the cable path.Avoid Sharp Bends:
Maintain proper bend radius to prevent internal damage.Seal Connectors:
Use weatherproof compression fittings and boots.
Direct Burial Coaxial Cable vs Standard Coax
| Feature | Standard Coax | Direct Burial Coax |
|---|---|---|
| Waterproof | ❌ | ✅ |
| UV Resistant | ❌ | ✅ |
| Gel Flooded | ❌ | ✅ |
| Outdoor Use | Limited | Perfect |
FAQ
Q: Can I bury regular RG6 cable underground?
No, standard indoor RG6 lacks waterproofing and will deteriorate quickly when exposed to moisture.
Q: Do I need conduit for direct burial coax?
Not required, but conduit adds extra protection and is recommended in rocky soil or high-traffic areas.
Q: How far can I run direct burial coax?
RG6: Up to 150 ft without amplification.
RG11: Up to 300 ft or more with minimal loss.
✅ Summary: Direct burial coaxial cables are the most reliable solution for underground TV, internet, and security camera connections. They’re built to handle moisture, UV exposure, and soil conditions, making them ideal for outdoor installations.
