Introduction
A rubber ducky is a stock antenna typically provided with HT (Handheld) radios. In this project, we’ll show you how to make a 2-meter antenna that typically outperforms the standard rubber ducky.
The first step in making an antenna is the wire. We use 24 gauge "magnet" wire, which is thin, flexible, and lightweight. While it does limit the maximum power of the antenna slightly, it works great for HTs that typically run about 5 watts.
Parts List
- Clear plastic drinking straws
- Hot glue gun and glue sticks
- ~19-20 inches of magnet wire (20 inches if you plan to tune it)
- OPTIONAL: Antenna analyzer
- Coax cable flange "pass through" connector for your radio connection (e.g., SMA connector for my radio)
- Soldering iron and solder
Steps to Build the Antenna
1. Cutting the Wire
Start by cutting about 19-20 inches of magnet wire. If you want to tune the antenna, use 20 inches; otherwise, use 19 inches. Sand the last inch or so of the wire to remove the insulation coating, exposing the copper. Optionally, clean it with isopropyl alcohol and allow it to dry completely.
2. Soldering the Connector
Heat up your soldering iron and apply a small amount of solder to the tip. Then, grab the coax cable connector and prepare it for soldering. Place it in a vice or use pliers, with the pin facing straight up. Hold the soldering iron tip against the pin and add solder to form a small cone or ball of molten solder. Insert the stripped wire into this solder ball and hold it until it cools.
3. Attaching the Casing
Once the wire is soldered, use a hot glue gun to secure the casing. Cover the entire stripped section of the wire with a thin layer of hot glue, then insert the wire into a drinking straw. Let the glue dry, and repeat this with additional straws. After the glue has dried, cut off the excess straw material. Inject glue into the straw's end and press it down with a screwdriver to crimp the casing. Wait for the glue to set.
Conclusion
Now you have a homemade 2-meter Yagi antenna! It’s an excellent project for learning about radio signals and antenna construction. The antenna is lightweight, functional, and serves as a great conversation starter during QSOs (radio communications).
Thanks for making it this far! If you haven't already, consider joining SLYARC to be part of an amazing community of young ham radio enthusiasts!
73,
KK7OYV