How Does Cable Quality Affect Antenna Performance (RG174 versus RG58)

How Does Cable Quality Affect Antenna Performance (RG174 versus RG58)

 

When developing or implementing an RF system, individuals frequently focus on the antenna, thinking that it alone impacts signal strength. In actuality, the coaxial connection that connects the antenna to the device has just as much impact on performance. Poor cable selection can degrade signals, create interference, and impair the overall efficacy of the system. RG174 and RG58 are two popular coaxial choices, each with its own set of advantages and disadvantages.

 

Why Does Cable Quality Matter?

 

Small signal losses can have a significant impact at high frequencies. Using the improper cable might result in

·         Excessive attenuation and weaker signals.

·         Impedance mismatches cause reflections and inefficiencies.

·         Increased EMI susceptibility can reduce dependability.

This is why selecting the appropriate cable type is critical for ensuring that the antenna operates to its maximum capacity.

 

 

Comparing RG174 with RG58:

Size & Flexibility

·         RG174 cable is thin (approximately 2.8 mm), lightweight, and very flexible, making it ideal for tiny devices and tight installations.

·         RG58 cables are thicker (about 5 mm), more sturdy, and less flexible, making them ideal for outdoor and industrial applications.

Signal Loss

• RG174: exhibits higher insertion loss, particularly at frequencies over 1 GHz. Works well for short cable runs.

• RG58: has reduced loss, making it ideal for extended cable lengths and high-frequency transmissions.

Applications

·         RG174 is suitable for GPS modules, IoT devices, and portable systems that prioritize flexibility and space above long-distance performance.

·         RG58 is suitable for Wi-Fi, LTE, 5G, and telecom infrastructure that demand low loss and stability.

 

Making the Right Choice

·         Use RG174 for flexibility and compactness with shorter connections.

·         Use RG58 for optimal signal integrity and frequency stability. Both cables serve critical functions, but choosing the incorrect one for your environment might degrade system performance.

Eteily Technologies Advantage

Eteily Technologies manufactures and supplies high-quality coaxial cables, connectors, and assemblies that have been precisely tested for longevity. Whether your application requires RG174 for compact designs or RG58 for high-frequency dependability, we guarantee the highest quality for peak performance.

 

✅ Bottom Line: A decent antenna alone cannot ensure connectivity. The grade of the cable—RG174 or RG58—directly affects how well signals are delivered and received.