RG59 cable is a 75-ohm coaxial cable commonly used to transmit analog video signals, making it a popular choice in CCTV systems, video surveillance, and legacy video equipment.
RG59 Coaxial Cable
While newer alternatives like RG6 are often used today, RG59 is still widely available and effective in specific low-frequency, short-distance applications.
What Is RG59 Cable?
RG59 is a type of coaxial cable with a 75-ohm impedance, designed for low-frequency signal transmission. It has a relatively thin diameter and is flexible, which makes it easy to install in tight spaces or around corners.
🔧 Key Specs:
Impedance: 75 ohms
Outer diameter: ~6.1 mm (0.24 in)
Center conductor: Solid or stranded copper (usually 20–22 AWG)
Shielding: Braid or braid + foil (depending on type)
Typical bandwidth: Up to 100–300 MHz
Attenuation: Higher than RG6 over long runs
What Is RG59 Cable Used For?
🎥 1. CCTV and Analog Video Surveillance Systems
Most common use for RG59
Transmits composite video from analog cameras to DVRs or monitors
Works best for runs under 200 feet
📺 2. Broadcast Video and Studio Equipment
Used in closed-circuit television (CCTV) studios
Compatible with BNC connectors and analog video standards (like NTSC)
🏠 3. Short-Distance Cable TV and VCR Connections
Older home theater setups used RG59 to connect VCRs, cable boxes, and TVs
Still used for legacy systems and audio-video patch panels
🔌 4. Baseband Video and Composite Signal Transmission
Transmits signals from video equipment, projectors, and AV systems
Common in schools, churches, and commercial buildings
RG59 vs RG6: What’s the Difference?
| Feature | RG59 Cable | RG6 Cable |
|---|---|---|
| Impedance | 75 ohms | 75 ohms |
| Diameter | Thinner (~6.1 mm) | Thicker (~7.1 mm) |
| Signal loss (attenuation) | Higher over distance | Lower, better for long runs |
| Frequency support | Up to 300 MHz | Up to 3 GHz |
| Typical use | CCTV, short analog video runs | Satellite, cable TV, broadband |
Use RG59 for short analog video or low-frequency signals.
Use RG6 for higher-frequency digital signals or longer cable runs.
Can You Use RG59 for HD or Digital Video?
Generally, RG59 is not recommended for HD video (like HD-SDI) or satellite/cable broadband. While some high-quality RG59 cables can support short-run HD video transmission, RG6 or RG11 are more reliable for modern, high-bandwidth applications.
Installation Tips
Use BNC connectors for most CCTV or video applications
Keep runs under 200 ft to avoid excessive signal loss
Choose RG59 Siamese cable if you need to carry both video + power for CCTV
Shielding quality matters—go for 95% copper braid for better signal integrity
Conclusion
RG59 cable is a 75-ohm coaxial cable best suited for short-distance analog video transmission, especially in CCTV surveillance systems. It's affordable, flexible, and easy to install—making it a practical choice for legacy or low-frequency AV applications.
Need RG59 Cable or Accessories?
We supply RG59 coaxial cables, BNC connectors, and RG59 Siamese cable for video + power solutions. Contact us for product specs or bulk orders tailored to your project.
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