In the week when we celebrates Hidetsugu Yagi’s 130th Birthday we selected 5 homemade Yagi-Uda Antenna Project for the 7 MHz.
40 meter Yagi antennas, are complex to build due to the overall antenna dimension, and the world wide web unfortunately does not offer many projects, but we discovered some realizations that could inspire you to build one.
A helically wound two element 40 meter yagi beam antenna from a 1974 QST article
A 40 meter band two elements yagi beam with a 6mt boom with pictures and drawings
A three element wire yagi antenna for 7 MHz project plan with drawings and EZNEC model
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excellent information!
Thank you
George
Alberta, Canada