1/4 Wave Ground Plane Antenna
Description
This is a parametric version of _HAZMAT's 1/4 excellent Antenna holder (MKIII). https://www.thingiverse.com/thing:3682480 It adds the ability to define: - how many radials (2-8), - central position of the antenna base - angle and diameter of the radiators - a socket style for the mounting pole so it doesn't slip down - many adjustments for key sizes, pole radii, cable tie positions, etc. There is also an antenna calculator attached to calculate the dimension of the actual antenna. That section is optional and does not directly affect the dimensions of the frame. Best gain is a 6 radial. 4 is typical. 3 is ok but not as circular and 2 is directional. 42 degrees is best match to 50 Ohms cable impedance. Works for 6m, 2m, 70cm, and up 1/4 antennas.
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