For those of us in the world of broadcast, security, or ham radio, crimping a BNC connector onto an RG58 cable is like tying our shoes. It's essential. But if you’re just entering the fray or looking for a refresher, here's your guide to doing it like a pro.
Understanding the BNC and RG58
1. What's a BNC Connector?
BNC, which stands for Bayonet Neill-Concelman, is a type of connector primarily used for coaxial cables. Its twist-on design ensures secure connections, which is why it's a favorite in professional settings.
2. Why RG58?
RG58 is a type of coaxial cable. It's flexible, versatile, and a standard for RF applications. Its 50-ohm impedance matches the requirements of most broadcast and communication equipment.
Essential Tools for the Job
1. Crimping Tool: A dedicated BNC crimping tool is a must. Don't skimp here – a quality tool will ensure a tight and secure fit.
2. Wire Strippers: This will prep the cable for the connector.
3. BNC Connectors for RG58: Not all BNC connectors are the same! Ensure yours is designed for RG58 cables.
4. A Sharp Cutter: For trimming the cable.
The Crimping Process
1. Prepping the Cable
a. Measure and Cut:
First, determine the required length for your cable. Once decided, use your cutter to slice the cable cleanly.
b. Stripping Away:
Use the wire stripper to remove about an inch of the cable's outer jacket. This will expose the inner shield and core.
c. Arrange the Shielding:
RG58 cables usually come with braided shielding. Push these braids back, forming a sort of ‘skirt’ around the main cable.
2. Getting the Connector Ready
a. Slide the Crimp Ferrule:
Before you attach the connector, slide the crimp ferrule (a small metallic ring) onto the cable. This is what you’ll crimp onto later.
b. Inserting the Connector:
With the braids pushed back, insert the center conductor of the cable into the BNC connector. Ensure it goes in smoothly, making full contact with the connector’s pin. The connector should sit snugly over the cable, with the braids still exposed below it.
3. Finalizing the Connection
a. Crimping:
Now, slide up the crimp ferrule until it covers both the bottom of the BNC connector and the exposed braids. Using the crimping tool, firmly crimp the ferrule. This action secures the connector onto the cable and provides excellent electrical contact.
b. Inspection:
Look closely at your work. The crimped ferrule should be even, with no bulges. The connector should be tightly attached, with no wiggle room.
Final Thoughts and Tips
- Practice Makes Perfect: If it's your first time, practice on some scrap RG58 cables before doing the actual job. Each time you’ll get better and more confident.
- Quality Matters: Always choose high-quality BNC connectors and a reputable crimping tool. They might cost a bit more upfront, but they save you from connection issues later on.
- Safety First: Though this isn’t a high-risk task, it’s always wise to work in a well-lit space and keep your tools in good condition.
Mastering the art of crimping a BNC connector on an RG58 cable is a fantastic skill to have. With this guide in hand and a bit of practice, you'll be creating secure, reliable connections in no time. Happy crimping!
