RG59 Siamese Coax Cable 500ft Professional White Spool combines coaxial and power cables in one jacket, designed for CCTV, security systems, and long-distance video transmission. Its 500ft spool provides efficiency for professional installations, offering low signal loss, durability, and compatibility with BNC connectors. Ideal for 1080p HD video, it supports simultaneous power and signal delivery up to 300+ feet.
How Does RG59 Siamese Coax Cable Work for Power and Video Transmission?
The RG59 cable integrates 18/2 AWG power conductors with a coaxial core, enabling centralized power supply to cameras while transmitting video signals. The copper-clad steel center conductor and aluminum shielding minimize electromagnetic interference (EMI), ensuring stable performance in commercial or residential settings.
This dual-conductor design allows installers to power multiple cameras from a single source, reducing the need for additional wiring. The coaxial portion uses a dielectric foam insulation that maintains 75-ohm impedance across the entire 500ft spool, critical for preserving video quality. When deploying in high-interference environments like industrial sites, the aluminum mylar shielding provides 360° EMI protection, reducing signal degradation by up to 85% compared to unshielded alternatives.
What Are the Key Specifications of RG59 Siamese Coax Cable?
This 500ft spool features a 20 AWG coaxial conductor, 95% copper braid shielding, and PVC jacket. It supports frequencies up to 3 GHz, with a capacitance of 16 pF/ft and impedance of 75 ohms. The white UV-resistant jacket blends with building exteriors, and its Siamese design reduces installation time by 40% compared to separate cables.
| Parameter | Value |
|---|---|
| Power Conductors | 18 AWG (2C) |
| Max Voltage | 300V |
| Temperature Range | -20°C to +60°C |
| Bend Radius | 1.5″ minimum |
What Are the Advantages Over RG6 and RG11 Cables?
RG59 is thinner (6.15mm diameter) and more flexible than RG6 (7.1mm) or RG11 (10.3mm), making it easier to route through walls. While RG6 supports 4K video up to 1000ft, RG59 is cost-effective for 1080p systems under 500ft. RG11 offers lower loss but costs 60% more, making RG59 ideal for mid-range projects.
For retrofitting existing buildings, RG59’s flexibility proves invaluable. Its smaller diameter allows passage through 3/8″ conduits where RG6 would require conduit upgrades. In cost comparisons, a 500ft RG59 spool typically costs $85-$120 versus $140-$200 for RG6 equivalents. However, installers should note RG59’s higher attenuation rate (6.1dB/100ft at 1GHz) compared to RG6’s 4.8dB/100ft – a critical factor for long-distance analog HD setups.
“RG59 Siamese remains the backbone of mid-tier security systems. Its dual-power design cuts installation costs by 25%, and with HD-over-Coax tech, it rivals IP systems under 500ft. However, integrators should pre-test voltage drop—the 18AWG power lines lose 2.5V per 100ft at 2A load.”
— Security System Integrator, 15+ Years in Structured Cabling
FAQs
- Can RG59 Siamese Cable Support 4K Resolution?
- No—RG59 maxes out at 1080p/5MP. For 4K, use RG6 with HD-TVI 3.0 or switch to Cat6 for IP systems.
- What’s the Maximum Distance for RG59 Power Delivery?
- At 24V/2A, the 18AWG conductors can power cameras up to 300ft. Beyond that, use a higher gauge (14AWG) power cable.
- Does the White Color Fade Over Time?
- Yes—after 2-3 years in direct sunlight. Apply UV-resistant conduit paint annually to maintain aesthetics.