2m Slot-Cube Amateur Radio Omni-Directional Antenna

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This is a model of a 2m Slot-Cube Amateur Radio Omni-Directional Antenna made of copper pipe and copper pipe joints that was designed by W3NBC and was featured in the January 2019 QST magazine.https://w6nbc.com/articles/2019-01QSTcubeslot.pdfThis antenna was designed using a nominal 1/2" copper pipe tubing Type L :https://www.engineeringtoolbox.com/cts-copper-tubing-sizes-d_2112.htmlThis antenna is actually a vertical polarized antenna since the upper loop is the radiator and the lower loop is the reflector. Think of it as an end-feed, wrapped, vertical, folded dipole.The SWR of this antenna is consistent with narrow band antennas since the large surface area of the copper pipes lower the resistance and give the antenna a higher Q ; thereby narrowing the bandwidth. https://en.wikipedia.org/wiki/Q_factor#Electrical_systemsThe portion of the antenna between the feed point and the ground plane is essentially behaving as a short-circuit stub. The 'short-circuit' next to the feed point is called a 'stub' and is a impedance matching technique. https://en.wikipedia.org/wiki/Stub_(electronics)For those of you that would like a more inconspicuous antenna, take a look at W6NBC's "Roostertenna", a Weather-Vane Disguised 2m Antenna that looks good in disguise as a rooftop weather vane that was published in September 2020 QST magazine.https://w6nbc.com/articles/2020-09QSTroostertenna.pdfThere are many other interesting antennas on his website and he also does free lectures (see his schedule) : https://www.w6nbc.com/Lastly there is a video on youtube about creating this style of antenna :https://fuzzthepiguy.tech/cube-antenna/