Comment on My new HF radio set up successfully

• farcaster@lemmy.world ⁨1⁩ ⁨week⁩ ago

  The main job of the unun is to match the impedance of the wire to the 50ohm feedline. You may or may not need a common mode choke to prevent RFI, but I had a lot of RF problems with my 40-10 EFHW. My radio was fine but my computer started to glitch out when was transmitting. That all disappeared once I looped my feedline through some ferrite.

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  • seahorse@midwest.social ⁨1⁩ ⁨week⁩ ago

    Alright, good to know. Do you have any recommendations for which choke to buy? Or maybe I should make one? I know other people have snapped the small chokes on other problematic devices’ wires that were causing issues. Was thinking of looking at those as they’re cheapest.

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    • farcaster@lemmy.world ⁨1⁩ ⁨week⁩ ago

      Something like a FT240-43 toroid should work for 80m to 10m.

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