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1344Re: [dxatlas] Skimmer bandwidth

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  • Alex, VE3NEA
    Feb 18, 2009

      This would be very difficult. The modes that support CAT control can have
      only a 3 kHz or 24 kHz bandwidth, this is hardcoded at the very bottom of
      the Skimmer architecture.

      73 Alex VE3NEA

      ----- Original Message -----
      From: "W0MU Mike Fatchett" <w0mu@...>
      To: <dxatlas_group@yahoogroups.com>
      Sent: Wednesday, February 18, 2009 06:36 PM
      Subject: [dxatlas] Skimmer bandwidth

      > That makes sense.
      > From what I understand skimmer will only decode over a 24khz range. Are
      > there any plans to open this range up for people with 192k sound cards and
      > LP-PAN?
      > Any plans for an RTTY skimmer?
      > Mike
      > "A slip of the foot you may soon recover, but a slip of the tongue you may
      > never get over." Ben Franklin
      > -----Original Message-----
      > From: dxatlas_group@yahoogroups.com [mailto:dxatlas_group@yahoogroups.com]
      > On Behalf Of Alex, VE3NEA
      > Sent: Wednesday, February 18, 2009 4:26 PM
      > To: dxatlas_group@yahoogroups.com
      > Subject: Re: [dxatlas] Demo Version
      > Hi Mike,
      > I experimented a lot with different waterfall resolutions and found out
      > that
      > the resolutions other than that used in CW Skimmer work very poorly for
      > DXing, contesting, pileup cracking, etc. Lower resolutions make it
      > difficult
      > to read Morse Code visually, do not allow you to accurately set the
      > frequency, make the bandmap too crowded, etc. I decided to hardcode the
      > optimal resolution in the program. As a side benefit, this allowed me to
      > implement waterfall panning - you can drag the waterfall vertically and
      > see
      > what is above and below the current window. Rocky has variable resolution
      > but does not have panning: these two functions are mutually exclusive.
      > Of course, nothing prevents CW Skimmer from decoding CW on the frequencies
      > that are not visible on the screen, decoding is independent of the
      > display.
      > 73 Alex VE3NEA
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