This is a dipole / inverted v antenna centerpiece with space for a built-in balun. Internal dimensions are 64 x 32 mm, which provide enough space for a small to medium size balun. I use mine with a toroidal current balun wound on a 32 x 16 x 8 core. This is enough for operating at 100 w with no issues.
External dimensions are 80 x 58 mm.
You will need an SO-239 connector, two 45mm M6 screws, nuts and washers to finish the centerpiece. You will also need to wind
Please note, the thread comes pretty tight (at least on my printer). Do not try to screw it completely right after printing. Rotate it back and forth a few times to let the threads grind.
Note: STL files came out pretty large and I probably need to play with the tolerance settings to make them smaller. On the other hand, it prints just fine as it is and I am not sure if less accurate models can introduce issues with threads, etc. Please let me know what you think in comments.
| Balun.STL | 38.1MB | |
| BalunCover.STL | 88.6MB |
