Best Coax Cable for CCTV: The Complete Guide

Published by Wassalat Technical Team

When installing a CCTV system, choosing the right coaxial cable is just as important as choosing the right cameras. The wrong cable can result in grainy video, signal dropouts, and unreliable surveillance footage.

This comprehensive guide covers everything you need to know about selecting coaxial cables for CCTV systems—from analog to HD-SDI, from short runs to long-distance installations.

Why Coax Choice Matters for CCTV

CCTV systems rely on analog or digital video signals that are highly susceptible to signal loss and interference. The right cable ensures:

• ? Clear, sharp video quality – No grain or noise
• ? Reliable signal transmission – No dropouts or interruptions
• ? Long cable runs – Camera placement flexibility
• ? Easy installation – Proper connectors and handling
• ? Cost-effective – Right cable for your budget

CCTV Video Types and Requirements

The 75Ω Standard

All CCTV equipment uses 75Ω impedance. This includes:

• CCTV cameras (analog and HD)
• DVRs and NVRs
• Video baluns
• BNC connectors
• Video distribution equipment

Using a 50Ω cable (like RG-58) will cause impedance mismatch, signal reflections, and poor video quality. Always use 75Ω cables for CCTV applications.

RG59: The Traditional Choice

RG59 has been the standard for CCTV installations for decades. It's a 75Ω cable that's thin, flexible, and easy to work with.

Specifications

RG59 Advantages

• ✅ Flexible – Easy to route in tight spaces
• ✅ Cost-effective – Low cost per foot
• ✅ Easy to terminate – Standard BNC connectors fit easily
• ✅ Lightweight – Easy to handle and install

RG59 Disadvantages

• ❌ Limited distance – Not suitable for long runs
• ❌ Higher attenuation – More signal loss than RG6
• ❌ Not ideal for HD – Struggles with HD video signals
• ❌ Thin conductor – 22 AWG is susceptible to breakage

RG6: The Modern Standard

RG6 has become the default choice for modern CCTV installations. It offers significantly better performance than RG59 at a modest cost increase.

Specifications

RG6 Advantages

• ✅ Lower attenuation – Much less signal loss than RG59
• ✅ Longer runs – Can go 150-300 feet for analog video
• ✅ HD ready – Supports AHD, CVI, TVI, and SDI
• ✅ Thicker conductor – 18 AWG is more durable
• ✅ Better shielding – Dual or quad shield options available
• ✅ Future-proof – Supports 4K and higher resolutions

RG6 Disadvantages

• ❌ Less flexible – Slightly stiffer than RG59
• ❌ Slightly more expensive – But still affordable

RG11: For Long Distances

RG11 is a thicker, lower-loss cable designed for long-distance video transmission. It's ideal for large properties, campuses, and commercial installations.

Specifications

RG11 Advantages

• ✅ Very low attenuation – Best performance for long runs
• ✅ Long distances – Can reach up to 600 feet for analog video
• ✅ Thick conductor – 14 AWG is extremely durable
• ✅ Excellent shielding – Typically quad shield available

RG11 Disadvantages

• ❌ Expensive – Significantly more expensive than RG6
• ❌ Hard to install – Stiff and heavy
• ❌ Requires special connectors – RG11-specific BNC or F-type
• ❌ Large bend radius – Requires careful routing

HD-SDI & 4K CCTV Cables

For professional CCTV systems using HD-SDI, 3G-SDI, or 4K signals, specialized cables are required.

1. Belden 1694A

Impedance: 75Ω

Applications: HD-SDI, 3G-SDI, broadcast video

Max Distance: 300 ft (HD-SDI), 150 ft (3G-SDI)

Key Feature: Industry standard for professional video. Low loss, excellent shielding, and precise impedance.

2. Belden 1505A

Impedance: 75Ω

Applications: HD-SDI, flexible installations

Max Distance: 250 ft (HD-SDI)

Key Feature: More flexible than 1694A, good for tight spaces.

3. RG-6 Quad Shield

Impedance: 75Ω

Applications: HD-TVI, HD-CVI, AHD, SDI

Max Distance: 200 ft (HD-SDI), 150 ft (3G-SDI)

Key Feature: Quad shielding provides excellent interference protection.

4. RG-11 for HD-SDI

Impedance: 75Ω

Applications: Long-distance HD-SDI

Max Distance: 400 ft (HD-SDI), 250 ft (3G-SDI)

Key Feature: For runs exceeding RG6 limits.

HD-SDI Cable Distance Chart

Side-by-Side Comparison

Connector Types for CCTV

1. BNC (Bayonet Neill-Concelman)

Impedance: 75Ω (for CCTV)

Primary Use: CCTV cameras, DVRs, video distribution

Key Feature: Quick connect/disconnect, reliable connection

2. F-Type

Impedance: 75Ω

Primary Use: Some CCTV baluns, video distribution

Key Feature: Screw-on connection, weatherproof

3. RCA

Impedance: 75Ω

Primary Use: Consumer video, some CCTV

Key Feature: Simple push-on connection

BNC vs F-Type for CCTV

Maximum Cable Length Guide

Analog CCTV (480p – 700TVL)

HD CCTV (AHD, CVI, TVI – 720p to 4K)

HD-SDI / 3G-SDI

Installation Best Practices

1. Use the Right Cable for the Distance

Don't use RG59 for runs over 100 feet. Upgrade to RG6 or RG11 for longer distances.

2. Minimize Cable Length

Every foot of cable adds signal loss. Plan your installation to use the shortest possible runs.

3. Use Quality Connectors

Cheap connectors cause signal loss. Use compression BNC connectors for reliable connections.

4. Avoid Sharp Bends

Sharp bends can damage the cable and alter impedance. Maintain the manufacturer's bend radius.

5. Use Weatherproof Connectors Outdoors

For outdoor cameras, use weatherproof BNC connectors or apply waterproof tape.

6. Label Your Cables

Label each cable at both ends for easy identification during troubleshooting.

7. Test Your Installation

Use a CCTV test monitor or signal meter to verify video quality after installation.

Frequently Asked Questions (FAQ)

1. Which coaxial cable is best for CCTV?

For most CCTV installations, RG6 is the best choice. It offers excellent performance for both analog and HD systems at a reasonable cost.

2. Can I use RG59 for HD CCTV?

RG59 is not recommended for HD CCTV. For 1080p or higher, use RG6 or RG11. RG59 may work for very short runs (under 50 ft) but performance will be compromised.

3. What is the maximum distance for RG6 CCTV?

For analog CCTV, RG6 can reach 300-400 feet. For HD CCTV (AHD, CVI, TVI), RG6 can reach 150-200 feet depending on resolution.

4. Can I use RG6 for HD-SDI?

Yes, high-quality RG6 with solid copper conductor and dual/quad shielding can support HD-SDI up to 200 feet. For longer runs, use Belden 1694A or RG11.

5. What is the difference between RG59 and RG6 for CCTV?

RG6 has a thicker center conductor (18 AWG vs 22 AWG) and lower signal loss. It supports longer runs and higher resolutions than RG59.

6. Can I use F-Type connectors for CCTV?

F-Type connectors are used with some CCTV baluns and distribution equipment. However, BNC is the standard for CCTV cameras and DVRs.

7. What is the best shielding for CCTV coax?

Quad-shield (foil + braid + foil + braid) offers the best protection against interference. Dual-shield is sufficient for most indoor installations.

8. Can I run CCTV coax next to power cables?

Avoid running coax parallel to power cables. Maintain at least 12 inches of separation. Cross power cables at 90° angles when necessary.

9. How do I terminate CCTV coax?

Use a coaxial stripper to prepare the cable, then attach a compression BNC connector. Always test after termination.

10. Should I use solid or stranded conductor for CCTV?

Solid conductor is better for permanent installations. Stranded is more flexible and better for patch cables and mobile use.

? Related Articles

• Complete Guide to Coaxial Cables
• RG6 vs RG11
• RG58 vs RG59
• Coaxial Cable Impedance
• 50 Ohm vs 75 Ohm Coax
• Browse Coaxial Cables →

Last Updated: July 2026

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