Coaxial Cable (5)

Coaxial Cable: Your Comprehensive Guide To Coaxial Aerial Cable Wire

This type of electrical cable is constructed of an inner conductor surrounded by a concentric conducting shield that is isolated by a dielectric insulating material paired with a protective outer jacket or sheath.

Coaxial cable from C&W Berry is designed to efficiently transmit frequency from one point to another in order to carry video and data signals without interference with the ability for use in a diverse range of applications including computer networks and radio communications. For more information regarding product specification and suitability, please click on the links below or contact our helpful sales team. We also sell a vast range of Cables for domestic and industrial uses in different cores providing armoured, fire and hot and cold temperature protection.

The following brief guide will help to provide further information relating to coax cables, including their types, functionality, installation recommendations, and tips for optimal performance.

Table of Contents

1. What Types of Coaxial Cable Are There?
2. How Do I Choose The Right Coaxial Cable?
3. What Are The Common Mistakes When Using Coaxial Cable?
4. How Should Coaxial Cable Be Used To Optimise Usability And Lifespan?
5. Why Should I Use Coaxial Cable?

1. What Types of Coaxial Cable Are There?

Coaxial cables are available in various types that are designed for different applications based on their construction and performance characteristics. These are the main types of coaxial cables:

• RG (Radio Guide) Coaxial Cables: These are the most common types of coaxial cables and are identified by a "RG" number e.g. RG6, RG59 with the number referring to a standard specification for impedance, size and construction.
• RG6: Common for satellite, cable TV and internet connections
• RG59: Typically used for short-range applications like security cameras, but with higher attenuation over long distances compared to RG6
• RG11: Used for long-distance cable runs such as in commercial or high-performance setups with lower attenuation than RG6 but it is thicker and less flexible
• Triaxial Cable: Similar to coaxial, but with an additional layer of shielding around the central conductor. This extra layer helps to reduce signal interference so suitable for applications requiring higher security against electrical noise
• Heliax (Flexible Coaxial Cable): A type of coaxial cable designed for high-performance applications in telecommunications, broadcasting and RF communication. Heliax cables are made for both flexible and permanent installations and are ideal for high-power transmission over long distances
• Mini Coaxial Cable: A smaller version of standard coaxial cable, they are often used in small electronics and cameras and have a smaller centre conductor and dielectric
• Low-Loss Coaxial Cable: Designed to minimize signal attenuation (loss) over longer distances. These cables are typically used in high-frequency or long-distance communications, such as in satellite dishes or broadcast stations
• Dual Coaxial Cable: Contains two coaxial cables within a single jacket, providing two separate transmission lines. It’s often used in applications where two signals need to be transmitted simultaneously, such as for audio and video signals in CCTV systems
• LMR (Low Loss Mobile Radio) Cable: A type of coaxial cable designed for use in radio frequency systems and communication systems with minimal signal loss. They are often used in cell towers and wireless communication networks

Each type of coaxial aerial cable is built for specific applications, offering trade-offs in terms of flexibility, attenuation, shielding and cost. The choice of cable will depend on factors like the environment indoor vs. outdoor, frequency, signal strength and the distance the signal needs to travel.

2. How Do I Choose The Right Coaxial Cable?

Choosing the right coaxial depends on the specific application you are using it for. Here are some factors to consider when selecting a coaxial cable from C&W Berry:

• Purpose or Use: For transmitting television signals, standard RG6 coaxial cables are commonly used. When you are connecting a modem, router, or network equipment, RG6 or RG59 cables are often used, depending on the speed requirements. RG6 is a common choice for satellite TV installations because it supports higher frequencies and longer cable runs
• Cable Type (Impedance): 75 Ohms is the most common impedance for television, video and internet and is used for most consumer electronics whereas 50 Ohms is used in networking and radio communications such as Wi-Fi or antenna connections as it has lower loss but is less common for typical home use
• Cable Length: The longer the cable, the more signal loss (attenuation) you will experience. If you're using a cable over a long distance, you might want to choose a low-loss coaxial cable and for shorter runs, you don't have to worry as much about attenuation
• Shielding: Single Shielding is good for short distances and less interference whilst Double Shielding offers more protection against interference and is better for longer distances or environments with a lot of signal noise e.g. outdoor installations. Triple Shielding offers the best protection against external interference, but is often only necessary for specialised uses like satellite or professional broadcast applications
• Jacket Material: PVC is commonly used for indoor installations and is standard and offers durability and flexibility. Polyethylene provides better resistance to moisture and is commonly used for outdoor and direct burial applications whilst CM, CL2, CL3 ratings indicate the fire resistance and is relevant if you are running the cable through walls or ceilings
• Connector Type: Make sure the connectors match the equipment you are connecting to. The most common connector type is the F-type connector, but you may also need BNC or TNC connectors for other uses
• Frequency and Signal Quality: Ensure the coaxial cable can handle the frequency range of the signals you're transmitting. For TV or internet, a typical RG6 can handle frequencies up to 3 GHz, which is more than enough for most applications. Be aware that the thicker the wire (lower gauge number) the lower the attenuation signal loss which is important if you're running the cable over a long distance
• Price and Brand: Choose a reputable brand that offers high-quality cables as sometimes cheaper cables can have lower performance, so it's worth investing in a better-quality product from C&W Berry for important installations

RG59 is standard for low-frequency applications like analogue video and shorter runs and is more affordable but has higher loss over long distances. RG6 is more common for high-frequency applications e.g. digital TV and internet and provides a good balance of price, performance and shielding. RG11 is used for long-distance runs where signal loss is critical as it is thicker than RG6, offering lower attenuation over long distances. We recommend that you consider the specific needs of your installation and choose accordingly and if you need any advice, the friendly, helpful team at C&W Berry will be only too happy to help.

3. What Are The Common Mistakes When Using Coaxial Cable?

When choosing and using coaxial cable from C&W Berry there are several common mistakes that people often make. Here’s a swift breakdown that may help you:

Choosing the Wrong Cable Type

• Mistake: Not selecting the right type of coaxial cable for the specific application
• Solution: Coaxial cables come in different types e.g. RG6, RG59, RG11 and each is designed for different uses including TV, internet and CCTV. Make sure to select a cable rated for your specific needs, such as high-frequency signals or outdoor use

Ignoring Cable Length Limitations

• Mistake: Using a cable that is too long without considering signal degradation over distance
• Solution: Longer cable lengths can cause signal loss attenuation so if you need a long run, choose a cable with a lower attenuation rate or use an amplifier to boost the signal

Not Considering Shielding

• Mistake: Not paying attention to the shielding of the coaxial cable
• Solution: Coaxial cables are supplied with varying levels of shielding e.g. foil and braided shielding. For high-interference environments, you need cables with more shielding to prevent signal degradation and interference

Poor Quality Connectors

• Mistake: Using low-quality or mismatched connectors for your coaxial cable
• Solution: Use quality connectors that match the cable type e.g. F-type connectors for RG6 as poor connectors can lead to signal loss or poor connection quality

Improper Installation

• Mistake: Over-tightening or damaging the cable during installation
• Solution: Be careful when connecting cables, especially when screwing on connectors as over-tightening can damage the cable and connectors, leading to poor signal performance

Exposing Cable to Harsh Conditions

• Mistake: Using indoor-rated cables outdoors or exposing them to moisture, UV or extreme temperatures
• Solution: Ensure you use a weather-resistant or outdoor-rated coaxial cable e.g. RG6 with a UV-resistant jacket for outdoor installations

Not Using Proper Cable Strippers

• Mistake: Using scissors or knives to strip the cable, which can damage the inner conductor or insulation
• Solution: Use a proper cable stripper tool designed for coaxial cables to ensure clean and accurate stripping without damaging the wire

Overlooking Cable Impedance

• Mistake: Using cables with the wrong impedance for your device e.g. using RG59 instead of RG6 for digital TV signals
• Solution: Ensure that the impedance of the cable, typically 75 ohms for TV and satellite systems, 50 ohms for networking matches the requirements of the device to avoid signal loss and distortion

Not Testing Connections

• Mistake: Not testing the connection after installation
• Solution: Always test the cable and connectors after installation to ensure signal quality so use a signal tester to help detect any issues with the connection or the cable itself

Improper Storage

• Mistake: Storing coaxial cables improperly, leading to kinks or bends that affect performance
• Solution: Avoid sharp bends and twists when storing coax cables loosely to prevent damage

By avoiding these mistakes, you can help to ensure optimal performance from your coaxial cable system from C&W Berry.

4. How Should Coaxial Cable Be Used To Optimise Usability And Lifespan?

Coaxial cable from C&W Berry is typically used for transmitting data, video and audio signals. It’s commonly used in telecommunications, television, internet and networking setups. Here are some general tips on how to use coaxial cable:

• Understand the Structure: Coaxial cables have a central core conductor usually made of copper, surrounded by insulation, a shielding layer often made of metal or foil and an outer protective jacket. This clever design helps minimize signal interference
• Choose the Right Type: There are various types of coaxial cables based on their application and it is important to ensure you are using the appropriate type for your needs. For instance RG6 is commonly used for cable TV and broadband internet whilst RG59 is used for video and CCTV systems, so it is important to ensure you are using the appropriate type for your needs
• Proper Connection: Coaxial cables typically use connectors like F-type connectors for TVs and cable modems or BNC connectors for surveillance systems. Make sure the connectors are tightly attached to avoid signal loss and always ensure the connections are secure but not over-tightened, as this could damage the cable or connectors
• Minimize Interference: Coaxial cable has shielding to protect the signal from external electromagnetic interference (EMI). However, it’s important to avoid running coaxial cables next to power lines or electrical equipment that may emit interference and keep the cable away from sharp bends to prevent signal degradation
• Correct Routing: Keep the cable neatly routed along walls or baseboards to avoid physical damage and if you need to extend the cable, use high-quality coaxial cable to reduce signal loss. For longer distances, consider a signal booster
• Test the Signal: If you're setting up cable TV, internet or other systems that rely on coaxial cables, it’s a good idea to test the signal strength once everything is connected to make sure it is optimal quality

By following these simple steps you can ensure that coaxial cable from C&W Berry performs efficiently and reliably for your needs.

5. Why Should I Use Coaxial Cable?

Coaxial cables are used for various applications and offer unique benefits. Here are some reasons why you might want to use coaxial cable from C&W Berry:

1. Signal Quality: Coaxial cables provide good protection against interference due to their shielding. The outer conductor helps block external noise from corrupting the signal, making them ideal for applications like TV, internet and security systems
2. Durability: They are tough and resistant to physical damage, making them a solid choice for both indoor and outdoor use, especially for things like satellite TV and internet connections
3. High Bandwidth: Coaxial cables support a wide range of frequencies, so they are great for transmitting high-speed data, such as internet signals, without significant loss of quality
4. Cost-Effective: While fibre optics offer faster speeds, coaxial is typically more affordable and easier to install, making it a popular choice for many home or business setups
5. Longer Distances: Coaxial cables can transmit signals over relatively long distances compared to some other cables without requiring signal boosters or amplifiers
6. Versatility: They are used for a variety of applications beyond TV, such as internet, radio and surveillance systems due to their ability to transmit both analogue and digital signals

If you're dealing with a system where you need a reliable, high-quality signal over a long distance then coaxial cables from C&W Berry will provide a solid and reliable choice.

For further technical information relating to our range of coaxial cables, please telephone our main sales line on 01772 431 216 or email [email protected].