Re: CW Filter

Jerry Gaffke

Here's an old thread on adding a separate CW crystal filter to the uBitx:

Jerry, KE7ER

On Sat, Mar 14, 2020 at 07:40 PM, Bob Clarke wrote:
Has anyone looked at designing a crystal filter for CW, any number of poles? I like the notion of using adjustable digital filters but believe based on my industry experience that any ADC should preceded by decent analog filtering to prevent overload by IMD. 


Bob, N1RC

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