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  • [QRZ] how to tune a commercial crystal filter

    From QRZ.com via rec.radio.amateur.moder@21:1/5 to All on Sun May 15 15:54:24 2022
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    Homebrew and Kit Projects

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    how to tune a commercial crystal filter

    Posted: 14 May 2022 08:14 PM PDT https://forums.qrz.com/index.php?threads/how-to-tune-a-commercial-crystal-filter.813731/

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