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Monoprice

Monoprice 115403 500ft RG59 Coaxial Cable + Power Wire

A 500-foot bulk spool of shielded RG-59 coaxial cable with integrated 18AWG power conductors for CCTV installations.

$82.95*
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*Price sourced from Amazon.com. Last updated:Jul 13, 2026.Price and availability are subject to change.

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Overview

The Monoprice 115403 is a 500-foot bulk spool of Siamese-style cable that pairs a shielded 22AWG RG-59 coaxial video line with two 18AWG copper power conductors in a single black jacket. This design is the standard for analog CCTV installations, allowing a single cable pull from each camera location back to the recording and power equipment. The RG-59 portion maintains a 75-ohm impedance for clean video signal transmission, while the shielding helps reject electromagnetic interference from nearby electrical wiring or equipment.

At 500 feet, the spool provides enough cable for most small to mid-sized security camera deployments — typically covering 6 to 12 camera runs depending on distances. The bulk format gives installers the flexibility to cut each run to the exact length needed, resulting in cleaner installations with less excess cable. The 18AWG copper power conductors are robust enough to deliver adequate current to cameras even on longer runs, reducing voltage drop compared to thinner gauge alternatives. This cable is purpose-built for analog video systems and is not a substitute for Ethernet cabling in IP camera setups.

Key Features

Center Conductor: 22AWG Copper Clad Aluminum solid conductor, 0.108" diameter

Dielectric: Foamed PE, 0.285" diameter over dielectric

Inner Shield: Aluminum/Poly tape, 100% coverage, 0.291" diameter

Outer Shield: 34AWG Tin/Copper Braid, 85% coverage, 0.320" diameter

Jacket: PE or FR-PVC, CMR/CATVR fire rated

Specifications

Cable Length
500 Feet
Video Cable
22AWG Shielded RG-59
Impedance
75 Ohms
Power Cable
2 x 18AWG Copper Conductors
Color
Black
Brand
Monoprice
Model
115403

Pros & Cons

👍 Pros

  • 500-foot spool provides enough cable for multi-camera installations without needing to splice separate rolls together.
  • Integrated power conductors eliminate the need to run separate power wiring alongside each video cable.
  • Shielded RG-59 construction at 75 ohms maintains clean video signal transmission and resists electromagnetic interference.
  • Bulk format allows custom-length cuts, reducing waste and ensuring clean cable runs for each camera location.
  • 18AWG copper power conductors can handle the current demands of most standard CCTV cameras over long distances.

👎 Cons

  • Bulk cable requires separate BNC and power connectors plus crimping tools, adding cost and labor for those without existing termination equipment.
  • The 500-foot spool is heavy and unwieldy, making it more practical for planned installations than quick one-camera jobs.
  • RG-59 is not suitable for IP or PoE camera systems, which require Cat5e/Cat6 Ethernet cabling instead.
  • Black jacket color may be visually prominent in exposed indoor runs where white or gray cabling would blend in better.
  • Not pre-terminated, so each connection point adds installation time compared to pre-made cable assemblies.

Frequently Asked Questions

The Siamese-style design bundles an RG-59 video cable with two 18AWG power conductors, so you only need to run a single cable from each camera location back to your DVR and power supply. This simplifies installation and reduces cable clutter.
It is designed for analog CCTV systems that use BNC connectors for video, including standard analog, HD-TVI, HD-CVI, and AHD camera setups. It is not intended for IP/PoE camera systems, which use Ethernet cabling.
Yes. This is a bulk spool without pre-terminated ends, so you will need BNC connectors and a crimping tool for the video side, and appropriate DC power connectors for the power conductors. This lets you cut each run to the exact length needed.
RG-59 coaxial cable reliably carries analog video signals up to approximately 500–750 feet depending on resolution and environmental factors. For runs at or near 500 feet, signal quality should remain strong for standard CCTV applications.
The two 18AWG power conductors use copper, which provides low resistance and reliable current delivery over long runs to power security cameras.

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