Magnetic Longwire Balun 9:1 for receiving. - YouTube
MAGNETIC-BALUN
Balun 1:49 100W 49:1 Magnetic Ring Barron for End Fed Short wave Antenna HAM | eBay
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Amazon.com: Balun One Nine v1 - Tiny Low-Cost 1:9 HF Antenna Balun and Unun with Antenna Input Protection for Ham It Up, RTL-SDR, HackRF and Other HF-Capable Radios. Great for DIY Dipole
Magnetic 9:1 HF BALUN for Beverage antenna Long wire antenna RTL SDR Software radio receiver (software defined radio) FOXWEY
ON6MU: Magnetic Longwire Balun for transmitting and receive, choke