Magnetic Loop Antenna
thingiverse
Printed components for the magnetic loop HF antenna are crafted from an inexpensive, 90 cm aluminum fitness hula hoop featuring a 16 mm pipe diameter. The coupling loop measures 18 cm in diameter and is constructed from solid electrical copper wire. A standard AM poly-film variable capacitor serves as the tuning capacitor holder. It's worth noting that this holder is detachable, allowing for easy redesign to accommodate any other capacitor suitable for the desired frequency range. The antenna itself is mounted on a standard 20 mm PVC sewer tube. All parts are secured using M3 Allen key bolts and hex nuts.
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