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Re: Xtal needed for 13.56MHz Softrock Lite II?? Math Check...

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  • wa1edj
    ... that. 18.08 MHz xtals seem to be available but not sure how close to exactly 18.08 they really are. This is for Part 15 HiFer band
    Message 1 of 3 , Apr 24, 2009
      --- In softrock40@yahoogroups.com, Tony Parks <kb9yig@...> wrote:
      >Thanks Tony!...Good point on the freq offset, hadn't thought about
      that. 18.08 MHz xtals seem to be available but not sure how close
      to exactly 18.08 they really are. This is for Part 15 HiFer band
      work....Thanks!...Bob...EDJ...

      > Yes, that is correct Bob. Depending on the application you may want
      > have the frequency off 13.56 MHz by 10 kHz to avoid the center frequency
      > noise.
      >
      > The 20m BPF is probably broad enough for the 13.56 MHz application.
      > Please see the attached schematic.
      >
      >
      > Tony Parks
      > kb9yig@...
      >
      >
      > On Fri, 2009-04-24 at 15:16 +0000, wa1edj wrote:
      > >
      > >
      > > If I wanted to put a Softrock Lite II on 13.56MHz center freq.
      > > I believe I'd need an 18.08MHz xtal and of course rework the BPF.
      > > Is my math correct??....Thanks!...Bob..WA1EDJ...
      > >
      > >
      > >
      > >
      > >
      >
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