If you have been following this site, this post might seem off-topic or random. Well, I’m a ham radio nerd too, so that’s why it’s here.
If you’re using a ham stick antenna (or any other omnidirectional, vertical antenna of similar size) and want to focus your RF energy in a specific direction, adding a curved wire mesh reflector can significantly improve your signal strength.
This simple DIY project helps reduce wasted RF behind your antenna and enhances your transmission range in the desired direction.
In this guide, I’ll walk you through why a reflector works, the best materials to use, and step-by-step instructions to build a sturdy frame. using the 10 m band as the example. For other bands (and different vertical antennas), see the chart at the bottom.
Why Use a Reflector?
A standard ham stick antenna is omnidirectional, meaning it radiates in all directions. By adding a reflector behind it, you can:
✔ Increase gain in the forward direction
✔ Reduce RF energy loss behind the antenna
✔ Improve signal clarity and efficiency
For a 10-meter ham stick, this setup works similarly to a Yagi by focusing radio waves forward, helping your signal go farther.
Choosing the Right Reflector Material
To effectively reflect RF energy, the type of metal and mesh size are critical.
1. Best Metal for the Reflector
- Aluminum – Lightweight, doesn’t rust, excellent conductivity (best choice!)
- Copper – Highly conductive, but expensive and oxidizes over time
- Galvanized Steel – Cheaper and strong, but heavier
- Brass – Corrosion-resistant, but costly
✔ Recommendation: Use aluminum wire mesh for the best balance of weight, conductivity, and durability.
2. Best Mesh Size (Grid Openings)
For 10-meter (28 MHz) operation, the wavelength is ~35 feet (10.6 meters). The ideal mesh should have openings smaller than 1/10th of a wavelength to effectively reflect RF.
✅ Best Mesh Size: 6 inches (15 cm) or smaller
✅ Wire Thickness: 14 AWG (2 mm) or thicker
A finer mesh (like chicken wire or hardware cloth) also works but may be harder to mount.
Building the Curved Reflector Frame
Now, let’s build a sturdy curved frame to hold the wire mesh.
Frame Specifications
- Width: 8–10 feet (2.5–3m)
- Height: 6 feet (1.8m)
- Curvature (Radius): 4–6 feet (~1.2–1.8m)
- Depth of Curve: ~1.5 to 2 feet (~45–60 cm)
- Placement Behind Antenna: ~8.7 feet (2.65m)
Materials Needed
| Material | Description |
|---|---|
| Wire Mesh | Aluminum, 6-inch (or smaller) grid |
| Frame Tubing | Aluminum or PVC pipe, ¾” or 1″ |
| Brackets & Clamps | To secure the frame |
| Wood or Metal Poles | For mounting the reflector |
| Zip Ties / Screws | For attaching wire mesh to frame |
Step-by-Step Assembly Guide
Step 1: Build the Curved Frame
- Use PVC pipe, aluminum tubing, or wooden 2x4s to create a curved structure.
- The curve should have a radius of 4–6 feet to properly direct RF waves.
- Attach 3–5 curved ribs spaced 2 feet apart.
- Add horizontal crossbars across the ribs for extra strength.
Step 2: Attach the Wire Mesh
- Cut your aluminum wire mesh to fit the frame.
- Stretch it tightly across the frame to maintain the curve.
- Secure the mesh with zip ties, clamps, or screws.
- Make sure there are no gaps or loose sections.
Step 3: Mount the Reflector Behind the Ham Stick
- Position it 8.7 feet (2.65m) behind your ham stick antenna.
- Secure it with a sturdy base (metal pipe or wooden posts).
- Slightly angle the reflector forward (~10°) to direct the RF beam upward if needed.
Optimizing Performance
To further improve signal strength:
✔ Enhance the ground plane – Add radials (8-foot wires extending outward) for better efficiency.
✔ Use an adjustable mount – Allow slight tilt adjustments to fine-tune RF direction.
✔ Weatherproof the setup – Use UV-resistant zip ties and rust-proof fasteners.
Expected Performance Boost
Adding this curved reflector should provide:
- Flat Reflector: ~3-5 dB gain
- Curved Reflector: ~6-8 dB gain (best for DX contacts!)
- Wire Reflector Alternative: ~3-4 dB gain but lightweight
- Ground Plane Enhancement: Better overall efficiency
Final Thoughts
If you’re serious about improving your 10-meter ham radio setup, adding a curved wire mesh reflector is a simple, affordable upgrade that makes a big difference. With just a few materials, you can turn your ham stick into a more directional antenna, improving your signal reach and clarity.
Give it a try and let me know how it works for you! If you have any questions or suggestions, drop them in the comments.
Happy DXing! 🎙️📡
P.S. For other bands, see the chart below:
