Construction of a 9:1 unun. Post 2169.
Thanks to Sparkie (2E0VOV) for this simple, concise, and easy to understand project. For those of us using random long wire antennas, a 9:1 unun is almost a necessity if we hope to avoid serious SWR mismatches to our equipment.
According to Sparkie, materials and tools for this useful antenna accessory are readily available: