Each insulator is simply a 18 mm cyclinder. It has a horizontal hole near to the top (15 mm from the base) to take the 2mm diameter copper antenna wire. There is also a vertical (coaxial) hole that acts is a pilot hole for a self tap screw that secures the insulator to the 13mm square cross section metal boom.
I printed the insulators in batches of 4 but a 3D printer could easily print out all 15 insulators at once if desired.
Testing the insulators
I put the 3D printed insulators in a Microwave oven for about 30 seconds to see if they absorbed power (I also include a half filled mug of water as a load to protect the oven).
As they didnt get hot I assume they dont absorb much power at the microwave frequencies of the oven - which is of course what we want for a good insulator at the higher freq of 2400 MHz.
more soon |
more soon |
".stl" file ".scad" file ".g" file |
more soon |
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