Since my magnetic loop antenna uses an FT14043 toroid for feeding, I have always found it bothersome to have to add of remove turns to the toroid for band selection. Finally I decided to build a band selector described in this video.
Magnetic Loop build:    • Building a Magnetic Loop Antenna For ...   and    • Building a Magnetic Loop Antenna For ...  
Download the STL file: https://www.thingiverse.com/thing:566...
Multimeter: https://www.amazon.co.uk/dp/B09GF2FZVY
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