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1785Re: V4 GUI improvement proposal

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  • Bob Thornton
    Sep 6, 2011
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      Constellation score shows how well we are receiving but something to indicate how well we are being received would be nice. Very good reasons of throughput why you don't want to bring that back, but could something simpler be done based on the counting of ACK and NACK frames. (ACK-NACK)/(ACK+NACK) sounds like a possible measure. Or effective data rate based on throughput.



      --- In V4Protocol@yahoogroups.com, "Rick Muething" <rmuething@...> wrote:
      > Pete,
      > It is hard to measure one or two parameters and show link quality. There is already one very good indicator and that is the constellation display and its score. This shows the “tightness of the symbolsâ€� and scores them 0 to 100. 100 is near perfect (4 very small dots in the corners of the constellation plot). A score > 50 is usually decodable without errors. The S/N is also computed and measures the average (across the frame) of the Desired signal (one of the 4FSK tones) compared to the other three tones. Its possible to add more frills, graphs and plots but the goal should be to communicate some useful information not just show and glitz. Its important to remember that the TNC does not actually have to be visible at all...its form is primarily for operator entertainment as there are few controls that are really required.
      > I’ll consider putting something else in if it makes sense and communicates something of value to the user. There really is not much one can do to improved the decoding other than trying with the filter IN or Out.
      > Rick KN6KB
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