Whether you're a DIY enthusiast, a radio hobbyist, or just someone looking to save some money on cable assembly, learning to crimp an RG174 coaxial cable to an RP-SMA connector can be both fun and rewarding. This guide breaks down the process into easy-to-follow steps, ensuring a secure connection every time.
Introduction to the Tools and Materials
Before diving into the procedure, let’s get acquainted with the necessary tools and materials:
1. RG174 Coaxial Cable: This is a flexible and thin coaxial cable often used for low-power signal and RF connections.
2. RP-SMA Connector: Commonly used in Wi-Fi equipment, this connector is distinguishable by its screw threads and male pin found in the jack (female) component.
3. Crimping Tool: A specialized tool designed to squeeze the connector onto the cable.
4. Wire Stripper or Cutter: To prep the cable.
5. Needle-nose Pliers: Useful for adjusting the braid.
Preparing the RG174 Coaxial Cable
1. Measuring and Cutting
- Start by measuring the required length of your RG174 cable.
- Using your wire cutter or a specialized coaxial cutter, cut the cable cleanly without squashing it.
2. Stripping the Cable
- Strip off about 10mm of the outer insulation to expose the inner shield and dielectric.
- Gently push back the exposed shield, creating a braided loop.
3. Exposing the Inner Conductor
- Carefully strip about 3mm of the inner dielectric to expose the central conductor. Ensure you don’t nick or cut the conductor.
Assembling the RP-SMA Connector
1. Slide on the Connector Parts
- Take the RP-SMA connector's back piece (usually the crimp sleeve) and slide it onto the RG174 cable, with the larger end pointing towards the cable's freshly stripped end.
- Push the RP-SMA pin over the exposed central conductor until it fits snugly against the dielectric.
2. Positioning the Braided Shield
- Fold the braided loop back down over the outer jacket of the cable. Use needle-nose pliers if necessary to neatly arrange the braid.
- Ensure the braid is evenly distributed around the cable's circumference for a secure fit.
3. Connecting the RP-SMA Body
- Now, slide the main body of the RP-SMA connector (the part with threads) over the end of the cable.
- Ensure the braided shield sits inside the connector and the central conductor fits into the pin of the connector.
Crimping the Connector
1. Position the Crimping Tool
- Place the connector within the jaws of your crimping tool. The jaws should align with the crimp sleeve of the RP-SMA connector.
- Ensure the cable doesn't shift from its place inside the connector.
2. Apply Pressure
- Firmly squeeze the crimping tool's handles together. This action will secure the connector onto the RG174 cable.
- Release the tool's handles and inspect your work. The crimp should be neat, with no bulges or irregularities.
Final Check
- Inspect Your Work: Check to ensure the connector is firmly attached to the cable. Give it a gentle tug to test its sturdiness.
- Test the Connection: If possible, connect the cable to your device and test for functionality.
Conclusion
Crimping an RG174 to an RP-SMA connector might seem daunting at first, but with the right tools and a bit of patience, it's a skill anyone can master. Remember, practice makes perfect! So, the next time you need a custom cable length or need to replace a damaged connector, you'll be ready to tackle the challenge head-on. Happy crimping!
