¾ λ collinear in his 'Two-metre Antenna Handbook'.
It is similar in construction to my ¼ λ Ground Plane for 70cm.
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| A ¾ λ Ground Plane for 70cm |
The driven element, consisting of the ¼ λ lower portion, the ¼ λ hairpin stub and the ½ λ upper portion, is bent from a single brazing rod.
The blue plastic strut gives rigidity to the driven element.
SWR measured lower than 1.5:1 at 435 MHz.
Related post: Another ¼ λ Ground Plane for 70 cm
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