On CW, avoid letters with the same symbol three-in-a-row, like:
B (dah-dit-dit-dit)
H (dit-dit-dit-dit)
J (dit-dah-dah-dah)
O (dah-dah-dah)
S (dit-dit-dit)
V (dit-dit-dit-dah)
Multiple dits in a row tend to lose a dit, dahs aren't as much of a
problem. Same goes with numbers, avoid 4 and 6 if possible (that's easy to
do, so many of them are assigned already!)
Letters that work best are ones that alternate dits and dahs, usually
ending in a dah, like A, C, K, N, R.
Notice that K1AR has three of those letters!
73 - Jim AD1C
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Jim Reisert AD1C, 7 Charlemont Court, North Chelmsford, MA 01863
USA +978-251-9933, <jjreisert@alum.mit.edu>, http://www.ad1c.com
PGP Fingerprint: D8E2 3D78 339F A7F1 8C13 1193 B5D1 4FB6 79D1 70DC
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