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    <div class="moz-cite-prefix">Thank you all for your responses. It
      appears that it is AR-Cluster that is the culprit. It appears to
      have only 7 digits of precision, but handles the exponent. Which
      suggests that it is using a float, rather than a double for QRG.
      Which means that, if this <u>is</u> the internal representation
      in AR-C, depending on the exact (binary version) of the mantissa
      it can have between 6 and 9 decimal digits precision. 
      Alternatively, it could be using a double and arithmetically
      rounding it to the nearest 7 digits. Or just truncating (flooring)
      it. Either way it is bad.<br>
      <br>
      Lee VE7CC and I are discussing what to do about PC11s coming from
      AR-C nodes. But, right now what you could do is set an input
      filter on any AR-C nodes that you connect to, eg. reject/spot
      k1ttt input  on 10000000/99000000<br>
      <br>
      This means no disrespect to David but duplicate spots like this
      have to be suppressed. There are other issues with spots coming
      from AR-C nodes even on lower frequencies. These are less
      tractable and will be harder to deal with and could require more
      drastic action.  <br>
      <br>
      Dirk G1TLH<br>
      <br>
      On 30/11/2021 09:04, gu6efb--- via Dxspider-support wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:!&!AAAAAAAAAAAuAAAAAAAAAPaeY+70VMVNh+EjT27tgWEBANlTnCJhprtFudq2LHCBs8EBACQA%2F%2F8AABAAAAB4EPQUZrZ0TLRKo5b4HfCvAQAAAAA=@lebs.org.uk">
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        <p class="MsoNormal" style="text-autospace:none"><span
            style="font-size:11.0pt;font-family:"Courier New"">Can’t
            seem to find that spot on DXspider cluster but it’s in the
            CCCluster log if it helps<o:p></o:p></span></p>
        <p class="MsoNormal" style="text-autospace:none"><span
            style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
        <p class="MsoNormal" style="text-autospace:none"><span
            style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
        <p class="MsoNormal" style="text-autospace:none"><span
            style="font-size:11.0pt;font-family:"Courier New"">CCCluster
            log GB7DXG<o:p></o:p></span></p>
        <p class="MsoNormal" style="text-autospace:none"><span
            style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
        <p class="MsoNormal"><- 17:25:22 GU6EFB-1
          CC11^7074^BG3GBZ^29-Nov-2021^1725Z^FT8  -11 dB 1364
          Hz^VE7CC-#^1^^RBNFT8^33^23^2^3^^BC^BY^VE^ON40^CN99^40^40.5/-109^<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:22 GU6EFB-1
          CC11^7074^HS3PJF^29-Nov-2021^1725Z^FT8  + 0 dB  337
          Hz^VE7CC-#^1^^RBNFT8^49^26^2^3^^BC^HS^VE^OK04^CN99^40^14.5/-101^<o:p></o:p></p>
        <p class="MsoNormal">-> 17:25:23 ON0DXK-5
          PC61^10489772.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^192.168.178.1^H29^~<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:23 GB7RDX
          PC61^10489772.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^192.168.178.1^H28^~<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:23 EA2CW
          PC61^10489772.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^192.168.178.1^H28^~<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:23 GB7DXG-1
          PC61^10489772.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^192.168.178.1^H28^~<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:23 VE7CC-1
          PC61^10489772.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^192.168.178.1^H28^~<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:23 G3WNR DX de SV5BYR:
          10489772.0  9X4X         KI48XE  nice op                1725Z<o:p></o:p></p>
        <p class="MsoNormal">-> 17:25:23 VE7CC-1
          PC61^10489772.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^192.168.178.1^H26^~<o:p></o:p></p>
        <p class="MsoNormal">-> 17:25:23 GB7RDX
          PC11^10489770.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^H97^~<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:23 EA2CW
          PC11^10489770.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^H96^~<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:23 GB7DXG-1
          PC11^10489770.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^H96^~<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:23 ON0DXK-5
          PC11^10489770.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^H96^~<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:23 VE7CC-1
          PC11^10489770.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^H96^~<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:23 G3WNR DX de SV5BYR:
          10489770.0  9X4X         KI48XE  nice op                1725Z<o:p></o:p></p>
        <p class="MsoNormal">-> 17:25:23 ON0DXK-5
          PC11^10489770.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^H94^~<o:p></o:p></p>
        <p class="MsoNormal">-> 17:25:24 EA2CW
          PC11^10489770.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
          op^SV5BYR^SV5BYR-7^H96^~<o:p></o:p></p>
        <p class="MsoNormal">-> 17:25:24 GB7DXG-1
          PC92^EI7MRE^62720^D^^5UT1U^H95^<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:24 GB7RDX
          PC92^EI7MRE^62720^D^^5UT1U^H94^<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:24 EA2CW
          PC92^EI7MRE^62720^D^^5UT1U^H94^<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:24 ON0DXK-5
          PC92^EI7MRE^62720^D^^5UT1U^H94^<o:p></o:p></p>
        <p class="MsoNormal"><- 17:25:24 VE7C<o:p></o:p></p>
        <p class="MsoNormal" style="text-autospace:none"><span
            style="font-size:11.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
        <p class="MsoNormal" style="text-autospace:none"><span
            style="font-size:11.0pt;font-family:"Courier New"">Keith
            GU6EFB<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <div>
          <div style="border:none;border-top:solid #E1E1E1
            1.0pt;padding:3.0pt 0cm 0cm 0cm">
            <p class="MsoNormal"><b><span
                  style="font-size:11.0pt;font-family:"Calibri",sans-serif"
                  lang="EN-US">From:</span></b><span
                style="font-size:11.0pt;font-family:"Calibri",sans-serif"
                lang="EN-US"> Dxspider-support
                <a class="moz-txt-link-rfc2396E" href="mailto:dxspider-support-bounces@tobit.co.uk"><dxspider-support-bounces@tobit.co.uk></a> <b>On
                  Behalf Of </b>Dirk Koopman via Dxspider-support<br>
                <b>Sent:</b> 29 November 2021 19:50<br>
                <b>To:</b> Dxspider-Support
                <a class="moz-txt-link-rfc2396E" href="mailto:dxspider-support@dxcluster.org"><dxspider-support@dxcluster.org></a><br>
                <b>Cc:</b> Dirk Koopman <a class="moz-txt-link-rfc2396E" href="mailto:djk@tobit.co.uk"><djk@tobit.co.uk></a><br>
                <b>Subject:</b> [Dxspider-support] 10Ghz+ spots<o:p></o:p></span></p>
          </div>
        </div>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal" style="margin-bottom:12.0pt"><span
            style="font-size:13.5pt;font-family:"Courier New"">Whilst
            I have a lot of sysop attention...<br>
            <br>
            Please could we look in our logs for this spot issued today.<br>
            <br>
            <br>
            29Nov2021@17:25:20 (chan) <- I GB7DJK
            PC61^10489772.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
            op^SV5BYR^SV5BYR-7^192.168.178.1^H27^~<br>
            <br>
            <br>
            The original was a valid PC61 but it has gone to some other
            node (probably to AR-C land) and come out as a PC11 with the
            WRONG QRG on it. Just as bad as this is that there are some
            ops that are using narrow band on 3cms (not to mention HF)
            and use fractions of KHz. That isn't preserved either. <br>
            <br>
            Please would you do this (copy'n'paste should work):<br>
            <br>
            grepdbg  '<- I' 'PC[61]1' 9x4x '\^1048'<br>
            <br>
            29Nov2021@15:39:33 (chan) <- I GB7DJK
            PC61^10489772.0^9X4X^29-Nov-2021^1539Z^
            ^IK5ZAI^IK5PWJ-6^151.29.14.116^H8^~<br>
            29Nov2021@15:39:33 (chan) <- I GB7DJK
            PC11^10489770.0^9X4X^29-Nov-2021^1539Z^
            ^IK5ZAI^IK5PWJ-6^H95^~<br>
            29Nov2021@17:25:20 (chan) <- I GB7DJK
            PC61^10489772.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
            op^SV5BYR^SV5BYR-7^192.168.178.1^H27^~<br>
            29Nov2021@17:25:20 (chan) <- I GB7DJK
            PC11^10489770.0^9X4X^29-Nov-2021^1725Z^KI48XE  nice
            op^SV5BYR^SV5BYR-7^H93^~<br>
            <br>
            Thanks<br>
            <br>
            Dirk G1TLH</span><o:p></o:p></p>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
Dxspider-support mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Dxspider-support@tobit.co.uk">Dxspider-support@tobit.co.uk</a>
<a class="moz-txt-link-freetext" href="https://mailman.tobit.co.uk/mailman/listinfo/dxspider-support">https://mailman.tobit.co.uk/mailman/listinfo/dxspider-support</a>
</pre>
    </blockquote>
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