A Super-Duper Tiny 3D-Printed HF Radio Antenna.

Yes really! The Half-Wave End-Fed is my favorite antenna and for good reasons. Here I build a very small 64:1 transformer in a 3D-printed case, with a description of the design. Worth watching until the end ;-) Note that a 64:1 is better for lower bands, say 30m and below, while a 49:1 is better for upper bands. With such a small toroid, better use three turns primary for either, otherwise, for an FT-140-43 or bigger, if you want to go up to 6m, use two turns primary (14 total).
3D file: https://www.thingiverse.com/thing:4636179
HWEF antennas: https://youtu.be/0zF7bDoqkG4
Artillery Genius:
https://www.banggood.com/custlink/3KmYHvJDCC
Creality Ender V3:
https://www.banggood.com/custlink/GvGytGc3cS
Shirts and mugs: https://teespring.com/stores/radio-preppers
Help this channel: https://www.patreon.com/radioprepper
Facebook: https://www.facebook.com/groups/radiopreppers
Radio Preppers Forum: http://radiopreppers.com

DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests.