a homemade magnetic loop antenna from a spare 3m length of rg213 working from 30m to 15m with a 130pf tuning capacitor. This res… | Ham radio antenna, Antenna, Loop
Grahn GS3 SE Loop Kurzwelle Shortwave vs. 30 Meter Langdraht-Antenne long wire - YouTube
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CHELEGANCE GA-450 Active indoor shortwave 0.5-30 MHz loop antenna for SDR