Antenna 9:1 impedance transformer for the RTL-SDR to connect long wire 100k - 50Mhz (BALUN)
Amazon.com: Balun One Nine v2 Barebones - Small Low-Cost 9:1 (1:9) HF Antenna Balun and Unun with Antenna Input Protection for Shortwave. Great for Software Defined Radio (RTL-SDR), Ham It Up &
Balun 9:1
DIY 9:1 Unun End Fed Random Wire Antenna for Ham Radio - YouTube
My new 9:1 unun : r/amateurradio
9:1 Magnetic Longwire Balun / Unun – M0UKD – Amateur Radio Blog
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
9:1 Impedance Transformer | Get out of the Radio Shack and Live Life
9:1 Magnetic Longwire Balun / Unun – M0UKD – Amateur Radio Blog