2m/70cm Copper Pipe J-Pole Antenna Construction Spacer
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This provides the small 3D printed spacers to aid in the construction of a 2m/70cm copper pipe j-pole antenna
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Model information
- Source
- Printables
- Category
- Other Gadgets
- License
- Creative Commons — Attribution
These 3d printed spacers make building this dual band copper pipe jpole much easier as explained in the youtube video for this project:
The dual JPole itself is amazingly broad band, easy to tune and has a nice low angle radiation pattern on both the 2 meter and 440 MHz bands. Don't be misled by the picture above, that is BEFORE optimization using the free antenna modelling program MMANA-GAL_basic. If you wish to replicate the final optimized values, cut and paste the following code into the antenna definition edit tab of the software.
Dual Band Copper Pipe J-Pole with Stub Element
*
446.0
***Wires***
11
0.0, 0.0, 0.0, 0.0, 0.0, 0.513, 0.00635, -1
0.0, 0.0, 0.0, 0.0, 0.0, -0.044, 0.00635, -1
0.0, 0.0, -0.044, 0.0, 0.049, -0.044, 0.00635, -1
0.0, 0.049, -0.044, 0.0, 0.049, 0.0, 0.00635, -1
0.0, 0.049, 0.0, 0.0, 0.049, 0.469, 0.00635, -1
0.0, 0.0, 0.0, 0.0, 0.049, 0.0, 0.00635, -1
0.0, 0.0, 0.513, 0.0, 0.0, 0.773, 0.00635, -1
0.0, 0.0, 0.773, 0.0, 0.0, 0.983, 0.00635, -1
0.0, 0.0, 0.983, 0.0, -0.049, 0.983, 0.00635, -1
0.0, -0.049, 0.845, 0.0, -0.049, 0.983, 0.00635, -1
0.0, 0.0, 0.983, 0.0, 0.0, 1.374, 0.00635, -1
***Source***
1, 0
w6c, 0.0, 1.0
***Load***
0, 1
***Segmentation***
400, 40, 2.0, 2
***G/H/M/R/AzEl/X***
2, 7.0, 2, 50.0, 120, 60, 0.0This process involves soldering copper pipes together so be prepared for some serious investments in both equipment and safe practicing to get it right. I hope you agree that the end result is worth the effort. 73 and I hope you have as much fun with this as we have, Sandy KB3EOF