[CQ-Contest] 2009 CQWW CW participation figures and logs accuracy
Stan
ua1out at yahoo.com
Sun Aug 1 05:14:15 PDT 2010
Hi
I was trying to figure out how many stations took part in the last CQWW CW and found some interesting figures.
CQWW 2009 CW contains a total of 3.870.544 QSOs extracted from 5514 logs. Total number of unique callsigns is 62.012. The question is how many mistakes do we make on average when copying callsigns.
If every 1/100th QSO has a mistake in callsign, this means 38.705 "fake" unique calls in logs, or potentially 23.307 "true" unique calls (62.012-38.705).
To get the accurate number of unique calls the programme had to count callsigns that are found in at least 10 logs. So here it is.
Below are unique calls count based on number of entires found in logs:
QSOS IN LOGS --- CALLS
============================
More than 8000 1 (HC8GR)
More than 7000 3 (LX7I, DR1A, CR3L)
More than 6000 6 (etc...)
More than 5000 16
More than 4000 41
More than 3000 71
More than 2000 139
More than 1000 554
More than 900 149
More than 800 173
More than 700 212
More than 600 286
More than 500 334
More than 400 489
More than 300 632
More than 200 1076
More than 100 2061
More than 90 374
More than 80 371
More than 70 414
More than 60 507
More than 50 571
More than 40 791
More than 30 1007
More than 20 1456
More than 10 2509
Less than 10 47742
Let’s assume that that station that were not found in at least 10 logs are either fakes or as a minimum not real contesters. If we ignore them, we can say that in 2009 there were 14243 hams who took part in CQWW CW.
If we follow the same assumption we can also say that some 47.742 stations either made less than 10 QSOs or most likely were incorrectly received callsigns.
As an example have a look at how many different variants of 5B/G4IRN found their way into contesters logs (number of QSOs in brackets):
5B/G3IRN (7), 5B/G4ERN (1), 5B/G4IAN (1), 5B/G4IFN (2), 5B/G4IGN (1), 5B/G4IR (2), 5B/G4IRN (1316), 5B/G4IRT (2), 5B/G4SRN (1), 5B4/G4IRN (10).
And finally, out of about 14.243 stations that took part in the contest, 5.514 sent their logs, which is less than 40% of participants.
Above figures are taken from CQWW Analyser stats (http://www.ei6dx.com/cqww-contest-analysis/).
73 de Stan
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