Andy Faber andrewfaber at ymail.com
Sat Jul 17 18:40:28 PDT 2010

I have to echo Kenny's lament.   As an example, I can
remember being incredibly frustrated in the middle of the night at P49Y in
an ARRL DX CW contest when an erroneous packet spot caused a sudden flurry
of dupes.  I tried everything that has been suggested: just work them 
quickly, send
your call repeatedly slowly,  send their call and say "sri dupe" and send 
call again -- but none of these techniques are very effective. Eventually,
of course, the problem abates, but it can cause you to grind your teeth for
ten minutes or  so.
 The worst offenders, are the big USA  multi stations that seem to jump 
instantly on any packet spot.  If you ignore them, because you know they are 
a dupe, then they just keep calling until you --again--
put them in the log, no matter how carefully you send your call over and
over.  Most of them simply seem not to listen.
  73, andy, ae6y, p49y

From: "Kenneth Silverman" <kenny.k2kw at gmail.com>
Sent: Saturday, July 17, 2010 1:41 PM
To: <cq-contest at contesting.com>
Subject: Re: [CQ-Contest] N6TJ AXIOMS OF LIFE

>>> They're happy, and I'm left with a DUPE.  Wonderful.  My only solution
>>> then
>>> is to QSY.  Then watch the DUPES disappear (for awhile, at least)
>>ONLY if you DON'T have the skill to know how to deal with it... ID more
>>often, call a couple CQ's with your call 2 or 3 times, and just work the
>>dupes that don't listen and get them out of the way... while adding a
>>comment about what your real call is again.
> I remember one busted spot on me where I tried IDing more often, QRS to 20
> WPM, kept sending my call, but the same BIG USA multi-op stations kept
> calling, completely ignoring what I was sending.  The problem is not only
> the casual ops - the problem of not listening extends to the highest level
> of stations.  In this particularly bad event (busted packet pileup), I 
> QRS'd
> to 15-20 WPM, kept sending my call, but the same big-gun USA stations kept
> calling.  When that didn't get them to listen I QRQ'd and worked them.
> Jim, in the data I've looked at the dupe rate doesn't appear to be 
> impacted
> significantly by busted spots.  It appears to be the average DX chaser 
> who's
> not calling in a busted packet pileup that's not using computer logging,
> doesn't use dupe check, or typed in the call incorrectly the first/second
> time etc.  Mostly I believe they are honest mistakes made by the multitude
> you want calling in the first place.  For most of the Team Vertical
> operations, dupe rates have been in the 4-6% range regardless of the op,
> style of operating or the number of times the call is sent.
> 73, K2KW
> aka BY2A/6Y2A etc
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