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1769Re: [dxatlas] Skimmer Server, prevent spotting calling calls on CQ frequency

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  • Pete Smith
    Feb 10 4:58 AM
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      I don't understand why not, and I'm sure I don't know the full
      explanation for how the rules work - best to ask Alex directly if he
      doesn't pick up on the point and reply.

      73, Pete N4ZR
      Visit the Contesting Compendium at http://wiki.contesting.com
      The World Contest Station Database, updated daily at www.conteststations.com
      The Reverse Beacon Network at http://reversebeacon.net


      On 2/10/2010 6:40 AM, pe2hd wrote:
      > Hi again,
      >
      > After giving it another thought there could be a problem.
      > because during a normal QSO usualy the transmissions starts and ends with something like "N4ZR DE PE2HD .............. N4ZR DE PE2HD KN" assuming I was the CQ caller, here the second call IS the CQer.
      >
      > Remarkable that the straight Skimmer doesn't show this behavior.
      >
      > 73 de PE2HD, Harry
      >
      > --- In dxatlas_group@yahoogroups.com, Pete Smith<n4zr@...> wrote:
      >
      >> Hmmm, this is interesting. The scenario Alex identified and I tested
      >> involved a sequence like N4ZR TEST<short space> PE2HD PE2HD. If the
      >> short space is too short (like if the calling station is very quick with
      >> his reply), then Skimmer cannot tell which station is the one calling
      >> CQ, and it reports them both. What he did in Skimmer Server 1.1 was to
      >> introduce a rule saying "if the callsign right before the TEST and the
      >> one right after it are different, don't identify the one right after it
      >> as a CQer." I tested that rule on a lot of 160M data, and found that 4
      >> out of 5 of the mis-identifications would not happen if he implemented
      >> his rule in Skimmer Server, so that is what he did.
      >>
      >> The difficulty is that right now there is no way of recording the 7-band
      >> QS1R data stream or playing it back in Skimmer Server, so all this
      >> testing had to be done with the straight Skimmer. I was using 1.4 for
      >> the tests, and found it was very prone to making this kind of error. I
      >> don't know whether Alex might have incorporated this rule change in 1.5,
      >> because I stopped using it for other reasons, related to its failing to
      >> do master.dta lookups, even in paranoid mode.
      >>
      >> 73, Pete N4ZR
      >> Visit the Contesting Compendium at http://wiki.contesting.com
      >> The World Contest Station Database, updated daily at www.conteststations.com
      >> The Reverse Beacon Network at http://reversebeacon.net
      >>
      >>
      >> On 2/9/2010 4:49 PM, pe2hd wrote:
      >>
      >>> Thank you very much for your answer Pete.
      >>>
      >>> I do have the latest Skimmer Server installed.
      >>> Skimmer Server starts well but after a cq-calling station makes a qso or is called by other stations then the other callsings are also spotted on the same frequency.
      >>> When I run CW Skimmer with my QS1R or Perseus I hardly see any "mis identifications".
      >>>
      >>> 73 de PE2HD, Harry
      >>>
      >>> --- In dxatlas_group@yahoogroups.com, Pete Smith<n4zr@> wrote:
      >>>
      >>>
      >>>> You can download the very latest Skimmer Server (1.1), just announced.
      >>>> It should eliminate about 80 percent of the mis-identifications found
      >>>> with Version 1.0.
      >>>>
      >>>> 73, Pete N4ZR
      >>>> Visit the Contesting Compendium at http://wiki.contesting.com
      >>>> The World Contest Station Database, updated daily at www.conteststations.com
      >>>> The Reverse Beacon Network at http://reversebeacon.net
      >>>>
      >>>>
      >>>> On 2/9/2010 7:32 AM, pe2hd wrote:
      >>>>
      >>>>
      >>>>> Hi,
      >>>>>
      >>>>> How can I prevent Skimmer Server spotting callsigns from stations that the CQ calling station is working on his CQ frequency?
      >>>>>
      >>>>> 73 de PE2HD, Harry
      >>>>>
      >>>>>
      >>>>>
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