Types of Coax Cable: Which One Is Right for Your Project?

Types of Coax Cable for RF

Radio frequency communication is one of the most demanding applications for coaxial cable because signal quality directly affects communication distance, transmission stability, and equipment performance.

Most RF systems operate with 50-ohm coaxial cable, making impedance matching one of the first design considerations. A mismatch between cable impedance and equipment impedance can increase signal reflection, reduce transmitted power, and negatively affect measurement accuracy.

The following cables are among the most frequently used for RF applications.

One mistake often made during procurement is selecting cable based only on price.

For example, replacing LMR400 with RG58 on a 15-meter outdoor antenna installation may reduce material cost, but the additional attenuation can noticeably weaken received signal strength. In weak signal environments, this may reduce communication range or create unstable connections.

Customers also need to consider connector selection. RF connectors such as SMA, N Type, TNC, MMCX, MCX, and BNC all have different mechanical and electrical characteristics. Choosing a connector that matches both the cable diameter and operating frequency helps maintain stable impedance throughout the entire assembly.

A customer manufacturing agricultural wireless monitoring equipment approached Sino-Conn after experiencing inconsistent communication between field sensors and the control station. Their original design used a general-purpose coax cable because it was inexpensive and easy to source locally. After reviewing the installation distance and operating frequency, our engineering team recommended a lower-loss cable with improved shielding. Field testing showed noticeably more stable communication, particularly during bad weather when signal margins became smaller.

This example demonstrates that the lowest cable cost does not always produce the lowest system cost.

Types of Coax Cable for Video

Video transmission places different demands on coaxial cable than RF communication. Instead of focusing primarily on transmitting radio-frequency energy, video systems require stable impedance and consistent signal quality to maintain clear images.

Most video equipment uses 75-ohm coax cable, with RG59 and RG6 being the two most common options.

For analog CCTV installations with relatively short cable runs, RG59 remains a practical and economical choice.

However, many modern surveillance systems now transmit HD, Full HD, or even 4K video. As resolution increases, maintaining signal quality over longer distances becomes increasingly important. In these situations, RG6 often delivers better performance because its larger conductor reduces attenuation.

Shielding is another important consideration.

Electrical interference from elevators, factory machinery, motors, switching power supplies, LED lighting, and nearby communication equipment can introduce image noise or signal instability.

Depending on the installation environment, customers may choose:

• Single braided shield
• Foil shield
• Foil plus braided shield
• Double braided shield
• Quad-shield construction

Higher shielding generally increases cable cost slightly, but it often prevents costly troubleshooting after installation.

One security equipment manufacturer contacted Sino-Conn after experiencing random image distortion during production testing. Their cameras, recorders, and software all passed inspection. The actual cause was insufficient shielding in the original coax cable. After switching to a foil-and-braid construction with higher shielding coverage, image stability improved without changing any electronic components.

Types of Coax Cable for Ethernet

Although twisted-pair cable dominates modern Ethernet networks, coaxial cable continues to play an important role in several networking applications.

These include:

• Broadband cable television networks
• Cable modem infrastructure
• Legacy Ethernet systems
• Hybrid RF communication equipment
• Industrial communication modules
• Embedded wireless networking devices

Many OEM products contain internal RF modules connected by miniature coaxial cables even though the external network connection uses standard Ethernet.

These assemblies often require:

One networking equipment manufacturer asked Sino-Conn to replace a standard coax assembly used inside a communication gateway. The original cable was longer than necessary because only standard lengths were available from the previous supplier. The excess cable complicated assembly and reduced production efficiency.

After producing assemblies with the exact required length and optimized connector orientation, assembly time decreased noticeably, and cable management inside the enclosure became much cleaner.

This illustrates another important point.

Custom cable assemblies do not simply improve electrical performance. They can also improve manufacturing efficiency and reduce labor costs.

Types of Coax Cable for Wireless

Wireless communication has become one of the fastest-growing application areas for coaxial cables.

Modern wireless equipment includes:

• Wi-Fi routers
• 5G equipment
• GPS receivers
• IoT gateways
• Smart agriculture systems
• Remote monitoring devices
• Industrial wireless sensors
• Vehicle communication systems

Different wireless products require different cable characteristics.

For example:

Customers often focus only on attenuation values.

However, another equally important factor is flexibility.

Many wireless devices contain moving components or require repeated maintenance. A cable that performs well electrically but is too stiff may place excessive force on miniature connectors during installation.

One customer producing portable communication equipment originally selected a low-loss cable with a relatively large diameter. During production, workers found that routing the cable inside the enclosure required excessive bending, creating stress at the connector.

Sino-Conn recommended a smaller-diameter stranded coax cable that slightly increased attenuation but significantly improved flexibility. Because the cable length inside the equipment was very short, the additional signal loss was negligible, while assembly efficiency and long-term durability improved considerably.

This demonstrates why successful cable selection always balances electrical performance with mechanical design.

Types of Coax Cable for Testing

Laboratories, research institutions, production lines, and calibration facilities place some of the highest demands on coaxial cable assemblies.

Unlike permanently installed cables, laboratory cables may be connected and disconnected hundreds of times every month. They are repeatedly bent, moved, and reconfigured during testing.

Engineers generally evaluate the following characteristics.

One overlooked issue is connector wear.

A high-quality cable can still fail prematurely if connectors loosen after repeated mating cycles. For laboratory applications, precision connector assembly is often more important than choosing the most expensive cable itself.

To improve consistency, Sino-Conn performs multiple inspection stages throughout production rather than relying solely on a final inspection. Depending on customer requirements, cable assemblies may undergo continuity testing, pin assignment verification, pull-force testing, impedance verification, visual inspection, and other project-specific tests before shipment.

One customer manufacturing RF testing instruments previously assembled coax cables in-house. Although the cable material met specifications, assembly quality varied between operators, resulting in inconsistent measurement results during production calibration.

After switching to fully assembled and tested cable assemblies supplied by Sino-Conn, measurement repeatability improved, production efficiency increased, and engineers spent less time troubleshooting cable-related issues.

For applications where measurement accuracy directly affects product quality, consistency is every bit as important as cable specifications.

The best coax cable is not necessarily the one with the lowest attenuation or the highest shielding coverage. It is the cable that delivers stable electrical performance, fits the available installation space, withstands the operating environment, and remains reliable throughout the product’s service life. That combination of factors is what experienced engineering teams evaluate before approving a cable for production, and it is the same approach Sino-Conn follows when helping customers develop custom coax cable assemblies.

How Do You Choose Types of Coax Cable?

Choosing the right types of coax cable is one of the most important decisions during product development, yet it is also where many purchasing mistakes happen. A cable may match the connector, look identical to the original sample, and even pass a short functional test, but still create problems after the product enters mass production or field operation. Common issues include excessive signal attenuation, unstable communication, poor flexibility, premature cable breakage, or electromagnetic interference.

Experienced engineers rarely select coaxial cables by model number alone. Instead, they evaluate the complete application. Factors such as operating frequency, cable length, impedance, installation space, bending requirements, shielding performance, working temperature, connector compatibility, and environmental conditions all influence the final decision.

At Sino-Conn, customers often send only a cable photo or an old sample without specifications. Our engineering team first analyzes the application before recommending a cable solution. This approach prevents many common purchasing mistakes and helps customers avoid unnecessary redesign costs later in the project.

The following checklist summarizes the most important selection criteria.

The following sections explain how each factor influences cable performance.

Types of Coax Cable by Impedance

Impedance is usually the first specification engineers confirm because it directly affects signal transmission efficiency.

The vast majority of coaxial cables fall into two categories.

Many buyers mistakenly believe that if the connector fits, the cable will also work correctly. In reality, impedance mismatch is one of the most common causes of poor RF performance.

When a 50-ohm device is connected to a 75-ohm cable, part of the signal is reflected back toward the source instead of reaching the destination. The higher the operating frequency, the more obvious this problem becomes.

Possible consequences include:

• Lower transmitted power
• Increased signal reflection
• Reduced communication distance
• Higher insertion loss
• Unstable wireless performance
• Poor measurement accuracy

The table below shows a simple comparison.

One OEM customer contacted Sino-Conn after changing suppliers for an RF cable assembly. Although the new assembly looked identical, wireless performance dropped noticeably during product testing.

Our engineers found that the replacement cable used the wrong impedance because the purchasing team had selected a cable based only on appearance and connector type. After replacing it with the correct 50-ohm cable, communication performance returned to normal without changing any other hardware.

This example highlights an important lesson: always verify impedance before comparing prices.

Types of Coax Cable by Frequency

Frequency determines how much signal is lost as it travels through the cable.

As operating frequency increases, attenuation also increases. This means a cable that performs well at several hundred megahertz may not be suitable for applications operating at several gigahertz.

The relationship between frequency and attenuation is one reason why cable selection should never be based only on outside diameter.

The following table provides general guidance.

Another factor often overlooked is cable length.

For example, signal loss over a 300 mm RF jumper inside a wireless module is almost negligible, even when using a relatively small cable such as RG174.

However, using that same cable over a 15-meter antenna installation would produce much higher attenuation than a low-loss cable such as LMR400.

The following comparison illustrates why both frequency and length should be considered together.

A customer manufacturing outdoor monitoring equipment originally requested RG174 because its small diameter made installation easier. After reviewing the required cable length and operating frequency, Sino-Conn recommended a lower-loss cable that better matched the application. Although the cable became slightly larger, communication stability improved significantly in field testing.

This is why engineers evaluate total system performance rather than focusing only on cable size.

Types of Coax Cable by Shielding

Modern electronic equipment contains many potential sources of electromagnetic interference.

Electric motors, power supplies, inverters, wireless transmitters, LED lighting, industrial robots, and communication equipment can all introduce unwanted electrical noise.

A well-designed shielding structure helps prevent this interference from affecting signal quality.

The most common shielding configurations include:

Customers frequently ask whether selecting the highest shielding level is always the best option.

The answer depends on the application.

Increasing shielding usually improves EMI protection, but it also increases:

• Cable weight
• Outer diameter
• Material cost
• Bending stiffness

For portable equipment or products with limited installation space, excessive shielding may reduce flexibility without providing meaningful performance improvements.

One customer producing automated testing equipment experienced intermittent measurement errors whenever large industrial motors started nearby.

After reviewing the installation environment, Sino-Conn upgraded the cable from a single-braided construction to a foil-and-braid structure. The testing equipment immediately showed much more stable measurements because external interference had been significantly reduced.

This solution increased the cable cost by only a small percentage while eliminating a problem that had delayed production for weeks.

Types of Coax Cable by Flexibility

Electrical performance receives most of the attention during cable selection, but mechanical performance is equally important.

Many coax cable failures occur because the cable is repeatedly bent, twisted, or pulled during normal operation.

Applications that require excellent flexibility include:

• Surgical equipment
• Laboratory instruments
• Industrial robots
• Automated production lines
• Portable electronics
• Vehicle-mounted communication systems

Several construction details influence flexibility.

Customers often focus on attenuation and overlook bending performance.

One robotics manufacturer approached Sino-Conn after replacing cables several times during product validation.

The electrical specifications were correct, but the cable failed after repeated movement because it was designed for fixed installation rather than continuous flexing.

After reviewing the machine’s movement cycle, our engineering team recommended a stranded conductor with a more flexible jacket material and improved strain relief design.

The revised assembly completed continuous movement testing without the premature failures experienced previously.

This demonstrates why flexibility should always be evaluated together with electrical performance.

Types of Coax Cable by Environment

The operating environment determines how well a cable performs over many years of service.

A cable used inside a climate-controlled laboratory experiences very different conditions than one installed on a telecommunications tower or inside heavy industrial equipment.

The outer jacket material should match the environment rather than simply minimizing material cost.

The following table summarizes common recommendations.

Customers should also consider:

• UV resistance
• Oil resistance
• Flame resistance
• Corrosion resistance
• Moisture resistance
• Low-temperature flexibility
• Abrasion resistance
• Halogen-free requirements
• PFAS compliance when applicable

At Sino-Conn, environmental conditions are discussed during every custom cable project because jacket material has a direct impact on product life.

For example, one European customer initially specified a standard PVC jacket for equipment installed outdoors throughout the year. After discussing the project details, our engineers recommended switching to a UV-resistant PE jacket.

The material cost increased only slightly, but the expected service life under continuous sunlight improved considerably, reducing future maintenance and replacement costs.

Besides cable materials, Sino-Conn also helps customers select suitable connector plating, sealing methods, strain relief structures, and overmolding designs according to the installation environment.

For customers developing new products, we can provide cable specifications, connector specifications, engineering drawings, and material recommendations before production begins. Standard drawings are usually completed within three working days, while urgent projects can often receive preliminary drawings much faster. Samples are normally delivered within two weeks, and urgent prototypes can be completed in as little as two to three days when materials are readily available.

The most successful cable projects are not the ones that simply use the most expensive cable. They are the projects where every element—from impedance and shielding to jacket material and connector design—is selected according to the actual operating conditions. This engineering-driven approach helps customers improve product reliability, reduce maintenance costs, simplify assembly, and achieve stable performance throughout the product’s entire service life.

How Can Types of Coax Cable Be Customized?

Most OEM manufacturers eventually discover that a standard coax cable is only a starting point. While catalog products are suitable for general applications, they rarely fit a product perfectly. A cable may be too long for the enclosure, the connector may interfere with nearby components, the jacket may not withstand the working environment, or the shielding may not provide enough protection against electromagnetic interference.

For this reason, custom coax cable assemblies have become the preferred choice for manufacturers of medical equipment, industrial automation systems, wireless communication devices, aerospace electronics, test instruments, and many other products.

At Sino-Conn, custom projects account for the majority of our coax cable assembly business. Some customers provide complete engineering drawings, while others send only a sample cable or a photograph. Our engineering team evaluates the application, recommends suitable materials and connector options, prepares production drawings for approval, and then manufactures assemblies that match the customer’s performance and installation requirements.

Customizing a coax cable is not simply changing its length. Every part of the assembly can be optimized to improve performance, simplify installation, reduce production costs, and increase long-term reliability.

The table below shows the most common customization options requested by OEM customers.

The following sections explain how these options improve both product performance and manufacturing efficiency.

Types of Coax Cable with Custom Length

Cable length is one of the simplest modifications, but it has a surprisingly large influence on both electrical performance and production efficiency.

Many customers purchase standard cable lengths because they are readily available. However, excess cable creates unnecessary routing problems, increases installation time, and may even affect signal quality.

Every additional meter of coax cable introduces signal attenuation. While this increase may be small over short distances, it becomes much more significant at higher frequencies.

The following table illustrates why selecting the correct length matters.

During one project, a customer manufacturing industrial control equipment originally used a one-meter cable because it was the shortest standard product available from another supplier. Inside the enclosure, nearly half of the cable had to be looped and secured with cable ties.

After reviewing the equipment layout, Sino-Conn produced a custom cable assembly with the exact required length. Assembly time decreased because operators no longer needed to manage excess cable, while the finished product looked cleaner and provided more internal space for maintenance.

Customers commonly request:

• Length tolerance of ±2 mm for precision equipment
• Matched cable sets for multi-channel systems
• Color-coded cable lengths
• Numbered assemblies
• Different lengths within the same production order

These seemingly small changes often improve manufacturing efficiency more than expected.

Types of Coax Cable with Custom Connectors

The connector determines how the cable interfaces with the equipment, and selecting the correct connector is just as important as choosing the cable itself.

Many projects require connectors that meet specific mechanical, electrical, or space limitations.

Common connector options include:

• SMA
• RP-SMA
• SMB
• SMC
• MMCX
• MCX
• U.FL
• BNC
• TNC
• N Type
• F Type
• Fakra
• Custom RF connectors

Beyond the connector type itself, customers frequently customize:

One customer developing portable wireless equipment experienced repeated connector failures during product testing.

The original straight connector required the cable to bend immediately after installation, placing constant stress on the termination.

After evaluating the enclosure, Sino-Conn recommended a right-angle connector with optimized strain relief.

This simple modification reduced bending stress, improved cable routing, and increased long-term reliability without changing the PCB layout.

Customers also have the flexibility to choose between original branded connectors and high-quality compatible alternatives.

Original connectors are often preferred by customers with strict qualification requirements, while compatible connectors provide shorter lead times, lower costs, and greater flexibility for custom projects.

Types of Coax Cable with Custom Materials

The cable jacket is the first line of defense against the operating environment.

Selecting the wrong material can shorten cable life even when the electrical design is correct.

The most commonly requested materials include:

Besides selecting jacket material, customers often specify additional performance requirements.

These include:

• Oil resistance
• UV resistance
• Corrosion resistance
• Flame resistance
• Halogen-free construction
• PFAS compliance
• Chemical resistance
• Moisture resistance
• Low-temperature flexibility
• Sterilization compatibility for medical applications

For example, one customer developing diagnostic medical equipment initially requested a standard PVC cable because it offered the lowest cost.

After discussing the product’s cleaning procedure, Sino-Conn recommended a more suitable jacket material capable of withstanding repeated exposure to disinfectants. Although the material cost increased slightly, the cable maintained its flexibility and appearance after long-term use, reducing the likelihood of premature replacement.

Selecting materials based on the operating environment rather than purchase price often results in a much lower total ownership cost.

Types of Coax Cable with OEM Design

Every OEM product has unique mechanical and electrical requirements, which is why complete cable assemblies are rarely identical between manufacturers.

Custom OEM development usually involves much more than selecting a cable and connector.

Typical engineering customization includes:

One advantage customers appreciate is receiving engineering drawings before production begins.

At Sino-Conn, production drawings are normally completed within about three working days, allowing engineers to verify dimensions, connector orientation, cable routing, and pin assignments before manufacturing starts.

For urgent projects with complete technical information, preliminary drawings can often be prepared much faster to help customers accelerate prototype development.

One European automation equipment manufacturer initially supplied only a sample cable without any documentation.

Our engineering team measured every component, identified the connector models, confirmed cable specifications, recreated the assembly drawing, and suggested several improvements to simplify production.

The final cable assembly required fewer installation steps than the original design while maintaining the same electrical performance.

This type of engineering support helps customers shorten development cycles and reduce production risks.

Types of Coax Cable with Certifications

Large OEM projects usually require much more than finished cable assemblies.

Engineering departments, purchasing teams, and quality managers often request technical documentation before approving production.

Common documentation includes:

For many international customers, these documents are just as important as the product itself because they simplify internal approval procedures.

Sino-Conn can provide detailed cable specifications covering:

• Conductor material
• Insulation material
• Shielding construction
• Impedance
• Voltage
• Current
• Outer diameter
• Temperature rating
• Bending performance
• Flame resistance
• UV resistance
• Oil resistance
• Corrosion resistance
• Halogen-free options
• Fluorine-free material options

This information allows engineering teams to verify that the selected cable fully meets project requirements before production begins.

In one recent project, a customer developing wireless communication equipment needed complete cable documentation for internal design approval. Instead of supplying only a quotation, Sino-Conn provided cable specifications, connector specifications, production drawings, and material declarations together. This allowed the customer’s engineering and purchasing departments to complete their approval process much more efficiently.

Custom documentation is especially valuable during prototype development because it reduces repeated communication and minimizes engineering changes later in the project.

The most successful custom coax cable projects are not built around a standard catalog number. They are designed around the product itself. By combining the right cable, connector, material, shielding, documentation, and manufacturing process, OEM manufacturers can improve product reliability, simplify assembly, reduce maintenance costs, and achieve more consistent production quality.

This is exactly the goal of Sino-Conn‘s engineering team. Whether a customer arrives with complete drawings or only a sample cable, we work closely with them to transform the initial idea into a fully customized coax cable assembly ready for prototype testing and mass production.