10m Lightweight Moxon

3D parts to build a 10m Moxon. 

The antenna is a 3d printed design, using mast, guys, antenna wire and tent poles.  Its designed to be lightweight and “quick” to deploy. the current configuration is:

• Sotabeams Tactical 7000HDS with ring and guys. You need a stiff mast, you don’t need the top sections. You can adjust to a different mast with the models below, but it must be stiff.
• 3D printed Moxon Hub, with interference fit for the a) mast and b) tent poles,
• 8.5mm fibreglass tent poles. But these are chunky and I am looking at a more lightweight solution. Watch this space.
• I used the sotabeams heavyweight wire, but next time i’d use the lightweight stuff. You could probably reduce the size of some of the strain relief holes if so and corner guy holes.
• Stabilising ring and pole ends for the moxon. The guys for the stabilising ring clips onto hooks printed in the wire corners. This worked really well at keeping the moxon the correct shape and stable in the wind.
• 3d Printed coax T and strain relief.

Parts:

1. Central Hub:

The file is configured for a Sotabeams Tactical 7000HDS mast and 8.5mm tent poles. I have included a freecad file so you can adjust for the required Diameter of the mast you want to use and the tent poles diameter in the ‘parameter spreadsheet’. Both should be interference  fit (Currently 22mm for mast and 8.7mm for tent poles.)

2. Pole ends with feed for antenna wire and clips for stabilising guys

I have included a freecad file so you can adjust for the required Diameter of the tent poles diameter in the ‘parameter spreadsheet’. You can adjust the wire holes with the “torroid” diameter, but I don't think you will need to, as i just used cable ties to secure the wire.

3. Top Stabilising Ring

Used to attach Guys to the moxon from higher up the mast to provide stablity. The diameter of the mast hole is adjustable in the spreadsheet

4. Feedpoint T with strain relief and a hole to surface mount BNC connector

Strain relief holes are for the sotabeams heavy duty wire. they could be made smaller or use the lightweight wire.

5. Links with strain relief

Designed to have heat shrink over the first part of the antenna wire. You need 4 of these and adjust the gap between the reflector and radiator with a section of 2mm cord. 

6. Mast guy ring.  

I did make one for higher up the mast, but i didn't need this, this one was fine in reasonable wind conditions.

1b. Alternative Hub. 

I also include a different hub, a remix of a design by youmslinky who posted the Fusion360 files, so for this you need Fusion360. This model allows you to add bolts to clamp the tent poles. I found that this was not necessary if you experiment and get the right interference fit ! Big thanks to youmslinky for posting the Fusion360 file.

Enjoy, I hope it works out for you. 

Please reach out on the sota reflector or QRZ dot com if you need help with this.

M7TSU/P