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It's amazing what can be done with discarded materials in the realm of amateur/ham radio.
In this video, Australian radio amateur Peter Parker (VK3YE) uses an old bicycle tire rim to make a workable magnetic loop antenna for listening and WSPR transmitting over 7-28 MHz. While not as efficient as a commercial magnetic loop or even a dipole antenna, it does work.
You could even use an old "hula hoop" from "back in the day" to make a receiving loop. If you're careful in selecting cast off materials, you may get an antenna form absolutely free. You can't beat that deal.
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Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).