Omni Directional antenna measurements
i’m testing the omni-directional antennas now. the small quickly built one seems problematic at this point. the large fully adjustable one is definetly functional though.
i only alinged everything by eye and did all testing with the one configuration of the ant.
i was rotating the antenna on a 360 degree rotation servo, and it was not rotating perfectly flat, so the circles are off-center. plus, i was only 40 inches away so i was very sensitive to this effect.
i tried measurements at 2, 3 and 5 degree inc to test out the system repeatability and at different dwell times at each point of rotation.
it’s amazing how the details repeat so well. even after starting at a different point in the rotation. i’m anxious to try this at say 10 feet instead of 3 and see if the pattern smooths out, but i’ll need more gain from my prototype circuit. (the PCB design has programmable gain in it)