Boom is 3D printed to avoid mistakes with drilling and is divided to 2 parts.
Use super glue to and joint.stl to fix connection.
Elements are from 3.2 mm al welding rods.
25mm PVC tube is used as support.
Dimensions:
http://www.dg7ybn.de/1296MHz/YBN23_9m.htm
The author marked this model as their own original creation.