RG-59 Siamese Coax Cable for CCTV Camera Installation
RG59 Siamese CCTV cable allows installers to run both the video and power to security cameras (analog CCTV, 720p, and
1080p HD cameras) using a single cable run. RG59 coaxial cable comes in 500 and 1000 foot spools and is available in black or white colors. The RG59 cables that CCTV Camera Pros supplies have a solid copper core, 95% copper braided shielding, and 75 ohm impedance. This is the best type of coax cable to use for CCTV and HD CCTV installations. RG59 and RG6 cable with steel / copper clad core that is made for CATV (cable TV) should NOT be used for video surveillance installations.
RG59 is cut by DIY and professional installers to the exact length that you need for each camera run. The RG59 portion of the cable is COAX and is used to run the video to the security camera. The 18 gauge pair is used to run the AC or DC power to your cameras. Click to learn more
about RG-59 cable or to watch a video on how to connect a BNC connector to RG59 Siamese cable. CCTV Camera Pros also supplies plug and play security camera cables which are pre-cut to different lengths and already have the BNC connectors attached.
 Please take a look at our RG59 Siamese coax cable / CCTV installation guide to see many examples of how these cables can be used to wire analog CCTV and HD security cameras that work over coax.
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CCTV Cable Distance Planning
The effective distance of RG59 Coax cable is up to 700 feet, however, a voltage drop in power cable (the 18 gauge 2 conductor cable) typically happens long before this. CCTV Camera Pros has developed this voltage drop calculator to help installers plan their cable run effectively.
Please also take a look at our RG59 Siamese cable wiring and installation guide to see many examples of how these cables can be used to wire analog CCTV and HD security cameras that work over coax.
How to Attach a Compression F Connector & BNC Male to F Female to RG59
This video uses a very popular method of attaching a BNC connector to RG59. The installer first attached a male F connector (compression type) to the cable. Then a BNC male to F female is screwed on. This technique is popular with security installers because compression connections are known to be extremely secure and F compression connectors are very easy to attach. Installers can then attach a BNC end or an RCA end to the F connection.
How to Attach a BNC Crimp-on Connector to RG59
This video shows customers how to attach a 2 piece BNC crimp-on connector to RG59. This is another very popular method for attaching BNC male connectors to RG59 and RG6 coax cable. This technique provides a very secure and reliable connection that will last.
How to Attach a BNC Twist-On Connector to RG59
This video shows customers how to attach a BNC twist-on connector to RG59. One of the nice things about twist-on type connectors is they do not require any special tool to attach them besides a coax stripper tool.
RG59 Siamese cable is a heavily shielded cable which contains a COAX video and pair of 18 gauge 2 conductor power in one jacket. The advantages to using RG59 cable is that its more durable and can be run in long distances without interference. You can also cut each security camera run the exact length that you need. You will need to attach BNC connectors to each end of the RG59 coax part of the cable for the CCTV video transmission. BNC connectors are available in twist on, crimp on, and compression types. 500 foot spools of RG59 are also available. Watch this video to see how to attach a BNC crimp-on connector to an RG59 cable.
Cable Features
- Siamese type configuration to run video and power in one cable jacket
- RG-59/U Type coax plus one pair 18 AWG stranded
- (Coax) solid bare copper conductor 20 AWG
- Gas injected polyethylene coaxial core Nom. OD .142 inch (3.61 mm) with an aluminum polyester tape barrier
- Bare copper braid shield 95% coverage
- Unshielded 18 AWG twisted pair employing PVC insulation and PVC fillers
- Overall PVC jacket Nom. OD .232 x .460" (5.89 x 11.68 mm)
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