AS9120B, ISO 9001:2015, and FAA AC 0056B ACCREDITED

Essential Considerations to Make When Choosing Between Coaxial Cables

Coaxial cables are widely used in electronic applications for transmitting high-frequency signals with minimal interference. Whether one is setting up a home entertainment system, establishing a business network, or working on an industrial project, choosing the right coaxial cable for the application at hand is crucial. With a myriad of options available, it is important to consider several factors to ensure optimal performance and reliability. In this blog, we will explore the most important considerations to make when selecting a coaxial cable.

Signal Frequency and Bandwidth

The first consideration one should make when choosing a coaxial cable is the frequency range of the signals it needs to handle. Various applications require different bandwidths, and selecting a cable that can adequately support the required frequency range is vital. This information is typically provided in the cable's specifications or provided manual, so be sure to check the frequency range and bandwidth capabilities before making a decision.

Cable Impedance

Coaxial cables also come with different impedance ratings, the most common options being 50 ohms and 75 ohms. Like bandwidth, cable impedance depends on the application. Generally, 50-ohm cables are commonly used for data transmission needs, such as in computer networks, while 75-ohm cables are suitable for video and audio signals, like those used in television and home theater systems. Matching the cable impedance to the equipment being used ensures optimal signal transfer and minimized signal loss.

Cable Construction and Materials

The construction and materials of a coaxial cable also play a crucial role in performance. Always prioritize cables with high-quality conductors and shielding when possible to minimize signal loss and interference. Copper conductors are widely preferred for their excellent conductivity, while the shielding should provide adequate protection against external electromagnetic interference (EMI) and radio frequency interference (RFI). Additionally, consider the cable's insulation material, which should be durable and capable of withstanding the environmental conditions of the installation site.

Cable Length

The length of the coaxial cable required for your project is another essential factor to consider, possibly making the difference between the perfect solution and an unusable one. Excessive cable length can lead to signal degradation, resulting in poor performance. On the other hand, using a cable that is too short may limit your flexibility in terms of equipment placement. As such, measure the distance between the devices you intend to connect and select a cable that provides sufficient length without excessive slack.

Connector Type and Compatibility

For proper connectivity to be established, coaxial cables require connectors at both ends. The choice of connector type depends on the devices you are connecting and the specific application. Common connector types include BNC, SMA, N, and F connectors, each featuring a different shape and signal conveyance capability. Ensure that the connectors on the cable are compatible with the equipment you are using, as proper connector installation and compatibility are paramount to maintaining signal integrity and preventing signal loss.

Fire Rating and Safety Considerations

In certain applications, such as building installations, fire safety regulations may require the use of coaxial cables with specific fire ratings. If this is a potential concern, check local building codes and regulations to ensure compliance with fire safety standards. Choosing cables with appropriate fire ratings not only ensures compliance, but also reduces the risk of fire hazards for increased safety.


Whether you are interested in a robust coaxial cable that can thrive in rigorous environments or a simple solution for your office network, look no further than Automatic Aerospace and our unrivaled inventory of offerings. As a premier distribution platform for aviation products and other related items, we proudly conduct operations with AS9120B, ISO 9001:2015, and FAA AC 00-56B accreditation. Our expansive database is expertly organized for your perusal, and we encourage you to explore our options as you see fit to find items of interest. Once you are ready to kick off procurement, submit a completed quote request form as provided on our website. Upon receiving and reviewing a completed form, a member of our staff will contact you in 15 minutes or less to present a tailored solution for your comparisons.


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