Micro Coaxial Cable factory

Step-by-Step Guide to Terminating RG-174 Micro-Coaxial Cables

If you’re working with RF (radio frequency) systems, antennas, or small-scale electronics, chances are you’ve encountered ​RG-174 micro-coaxial cables. These thin, flexible cables are popular for their low loss and durability in tight spaces, making them ideal for applications like GPS devices, Wi-Fi antennas, CCTV systems, and automotive electronics. However, terminating RG-174 cables properly is critical to maintaining signal integrity and preventing interference.

In this SEO-optimized guide, you’ll learn ​how to terminate RG-174 coaxial cables like a pro, with clear steps, essential tools, and expert tips.

​Why Proper Termination of RG-174 Matters

RG-174 cables are designed for high-frequency signals, but improper termination can lead to:

• Signal loss or distortion
• Increased electromagnetic interference (EMI)
• Physical damage to the cable or connector
• Reduced lifespan of the connected equipment

Whether you’re using ​BNC, ​SMA, or ​MCX connectors, following the right steps ensures reliable performance.

​Tools You’ll Need

Before starting, gather these tools:

1. RG-174 coaxial cable
2. Coaxial connector (e.g., BNC or SMA)
3. Coaxial cable stripper (or precision wire strippers)
4. Crimping tool (specific to your connector type)
5. Soldering iron and solder (optional for added durability)
6. Heat shrink tubing (for insulation)
7. Multimeter (to test continuity)

​Step 1: Strip the RG-174 Cable

1. ​Measure and mark: Determine the length of the outer jacket to strip based on your connector’s specifications (usually 8–10 mm).
2. ​Strip the outer jacket: Use a coaxial stripper or sharp knife to carefully remove the outer insulation without damaging the braided shield underneath.
3. ​Expose the dielectric: Peel back the braided shield to reveal the white dielectric insulator.
4. ​Strip the center conductor: Trim 3–4 mm of the dielectric to expose the inner copper core.

⚠️ ​Pro Tip: Avoid nicking the center conductor or shield—this can degrade signal quality.

​Step 2: Prepare the Connector

Most RG-174 connectors consist of three parts:

• ​Connector body
• ​Center pin (for soldering or crimping)
• ​Crimp sleeve

1. Slide the crimp sleeve onto the cable.
2. Insert the exposed center conductor into the connector’s center pin. If soldering, apply a small amount of solder for a secure bond.

​Step 3: Crimp the Connector

1. Position the braided shield over the connector body.
2. Use a crimping tool to compress the crimp sleeve onto the cable’s outer jacket and shield. Ensure even pressure to avoid gaps.
3. For added security, slide heat shrink tubing over the crimped area and apply heat to seal it.

​Step 4: Test the Termination

1. Use a multimeter to check for continuity between the connector’s center pin and the cable’s core.
2. Verify there’s no short circuit between the center conductor and the shield.

​Common Mistakes to Avoid

• ​Over-stripping: Cutting too deep into the dielectric or shield.
• ​Loose crimps: Weak connections lead to signal loss.
• ​Skipping testing: Always validate your work with a multimeter.

​FAQ: Terminating RG-174 Cables

Q: Can I solder RG-174 instead of crimping?
A: Yes, soldering provides a strong bond, but crimping is faster and avoids heat damage to the dielectric.

Q: What’s the maximum frequency RG-174 supports?
A: RG-174 performs well up to 3 GHz, making it suitable for Wi-Fi, GPS, and short-range RF applications.

Q: How do I choose the right connector?
A: Match the connector to your device’s port (e.g., BNC for CCTV, SMA for antennas).