Someone asked how many unique calls are in the list of North America QSOs
with 3B9c on 160m. A manual count of duplicates
reveals:
... of 563 North America QSOs...
... 22 QSOs were for a second mode...
... 30 QSOs were duplicates...
... leaving 511 unique calls...
One North American station made 3 QSOs on the same mode, and one made 4 QSOs
on the same mode. The other 23 duplicates were a
second QSOs on the same mode.
My personal reaction is that the duplicate level is rather low: < 6%. For a
band with marginal openings, and nights of bad QRN,
this seems reasonable.
I confess to contributing a duplicate QSO in the log (on SSB, even!) because
(a) I didn't hear a confirmation that my call was
logged successfully (an untimely static crash, and K1NA was in the pileup as
well), and (b) it was the last night of 3B9C
operations -- so no more chances! I suspect there are similar stories behind
most of the other dupes.
73,
-- Eric K3 Numerical Analysis
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