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RE: [BCD396XT] 396 display mode

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  • Dan Danz
    Geez, Joe . I get better decode as the err rate approaches 0, and it becomes intolerable about 70 or so. I think your description was just backwards. It is
    Message 1 of 9 , Sep 5, 2009
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      Geez, Joe . I get better decode as the err rate approaches 0, and it becomes
      intolerable about 70 or so.



      I think your description was just backwards. It is really error rate, not
      anti-error rate.



      ________________

      Dan Danz (WA5SKM)

      Fountain Hills AZ



      From: BCD396XT@yahoogroups.com [mailto:BCD396XT@yahoogroups.com] On Behalf Of
      MCH
      Sent: Thursday, September 03, 2009 9:47 PM
      To: BCD396XT@yahoogroups.com
      Subject: Re: [BCD396XT] 396 display mode





      Think of it as a digital s-meter.

      On a perfect signal the scanner will accurately decode every bit sent.

      As the signal gets weak, it may miss some bits. Let's say it's decoding
      9 out of every 10. The ERR rate will be 90% (which is really an
      anti-error rate, but we won't go there). At this point, the error
      correction should still be able to fill in the missing pieces.

      The weaker the signal, the less bits that are accurately decoded. Around
      60% or so you will notice that there are so many missed bits the error
      correction cannot compensate and the signal will 'go digital' for the
      most part.

      If your ERR rate is down to 10%, there isn't enough data left to decode
      anything reliably.

      I'm not sure about the exact point where you lose the digital signal,
      but it should be close to what I said. It still gives you the idea
      behind the info.

      Joe M.

      pitboss1@... <mailto:pitboss1%40yahoo.com> wrote:
      > Thanks mch can u explain the bt err rate nt sure what that means thanks. Tony
      > Sent from my Verizon Wireless BlackBerry
      >
      > -----Original Message-----
      > From: MCH <mch@... <mailto:mch%40nb.net> >
      >
      > Date: Fri, 04 Sep 2009 00:34:41
      > To: <BCD396XT@yahoogroups.com <mailto:BCD396XT%40yahoogroups.com> >
      > Subject: Re: [BCD396XT] 396 display mode
      >
      >
      > You're seeing the technical info for the digital decoding as well as the
      > bit error rate.
      >
      > For encrypted transmissions the scanner ignores them.
      > No sense in sticking on a channel you cannot hear, right?
      >
      > Joe M.
      >
      > pitboss1 wrote:
      >> in a digital system when your in the f+tap cntrl nob, what does it mean for
      the specs ie, auto slash err---, and the t and numbers down below. and shoudnt
      it in display mode 1 when there is a encrypted trans, show enc???? thanks for
      your help guys.... ps check out my feed of the san bernardino county sheriffs
      dept. system one on rr good stuff...
      >>
      >
      >
      >
      > [Non-text portions of this message have been removed]
      >
      >
      >
      > ------------------------------------
      >
      > Yahoo! Groups Links
      >
      >
      >
      >





      [Non-text portions of this message have been removed]
    • MCH
      Read my correction posted 24 hours ago. Joe M.
      Message 2 of 9 , Sep 5, 2009
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        Read my correction posted 24 hours ago.

        Joe M.

        Dan Danz wrote:
        > Geez, Joe . I get better decode as the err rate approaches 0, and it becomes
        > intolerable about 70 or so.
        >
        >
        >
        > I think your description was just backwards. It is really error rate, not
        > anti-error rate.
        >
        >
        >
        > ________________
        >
        > Dan Danz (WA5SKM)
        >
        > Fountain Hills AZ
        >
        >
        >
        > From: BCD396XT@yahoogroups.com [mailto:BCD396XT@yahoogroups.com] On Behalf Of
        > MCH
        > Sent: Thursday, September 03, 2009 9:47 PM
        > To: BCD396XT@yahoogroups.com
        > Subject: Re: [BCD396XT] 396 display mode
        >
        >
        >
        >
        >
        > Think of it as a digital s-meter.
        >
        > On a perfect signal the scanner will accurately decode every bit sent.
        >
        > As the signal gets weak, it may miss some bits. Let's say it's decoding
        > 9 out of every 10. The ERR rate will be 90% (which is really an
        > anti-error rate, but we won't go there). At this point, the error
        > correction should still be able to fill in the missing pieces.
        >
        > The weaker the signal, the less bits that are accurately decoded. Around
        > 60% or so you will notice that there are so many missed bits the error
        > correction cannot compensate and the signal will 'go digital' for the
        > most part.
        >
        > If your ERR rate is down to 10%, there isn't enough data left to decode
        > anything reliably.
        >
        > I'm not sure about the exact point where you lose the digital signal,
        > but it should be close to what I said. It still gives you the idea
        > behind the info.
        >
        > Joe M.
        >
        > pitboss1@... <mailto:pitboss1%40yahoo.com> wrote:
        >> Thanks mch can u explain the bt err rate nt sure what that means thanks. Tony
        >> Sent from my Verizon Wireless BlackBerry
        >>
        >> -----Original Message-----
        >> From: MCH <mch@... <mailto:mch%40nb.net> >
        >>
        >> Date: Fri, 04 Sep 2009 00:34:41
        >> To: <BCD396XT@yahoogroups.com <mailto:BCD396XT%40yahoogroups.com> >
        >> Subject: Re: [BCD396XT] 396 display mode
        >>
        >>
        >> You're seeing the technical info for the digital decoding as well as the
        >> bit error rate.
        >>
        >> For encrypted transmissions the scanner ignores them.
        >> No sense in sticking on a channel you cannot hear, right?
        >>
        >> Joe M.
        >>
        >> pitboss1 wrote:
        >>> in a digital system when your in the f+tap cntrl nob, what does it mean for
        > the specs ie, auto slash err---, and the t and numbers down below. and shoudnt
        > it in display mode 1 when there is a encrypted trans, show enc???? thanks for
        > your help guys.... ps check out my feed of the san bernardino county sheriffs
        > dept. system one on rr good stuff...
        >>
        >>
        >> [Non-text portions of this message have been removed]
        >>
        >>
        >>
        >> ------------------------------------
        >>
        >> Yahoo! Groups Links
        >>
        >>
        >>
        >>
        >
        >
        >
        >
        >
        > [Non-text portions of this message have been removed]
        >
        >
        >
        > ------------------------------------
        >
        > Yahoo! Groups Links
        >
        >
        >
        >
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