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Re: [BCD396XT] 396 display mode

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  • MCH
    Read my correction posted 24 hours ago. Joe M.
    Message 1 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]
      >>
      >>
      >>
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