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4X TV Antenna Connector 300 Ohm to 75 Ohm Coaxial Cable Matching Transformer UHF/VHF/FM Model TV Converter | Walmart Canada
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Linea Paralela 300 Ohm 1.80 € | Astroradio
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Should you swap out the 300 Ohm cable from your antenna? - The Solid Signal Blog
Selecting the Right Transmission Line Impedance | DigiKey