The CQWW DX Rule:
Single Transmitter (MS): Only one transmitter and one band permitted during
any 10-minute period.
Exception: One—and only one—other band may be used during any 10-minute period
if—and
only if—the station worked is a new multiplier. Ten-minute periods are defined
as starting with
the first logged QSO on a band.
So if - "1st QSO on 160m logged at 03.12," you count how many minutes you must
be on
the band:
0312 = 1
0313 = 2
0314 = 3
0315 = 4
0316 = 5
0317 = 6
0318 = 7
0319 = 8
0320 = 9
0321 = 10
You may initiate a "new band" QSO after the 10 minute duration. Your
"required" time
on 160 (in your example) ends when minute 0321 is completed. Therefore, you
may
QSY to another band an initiate another QSO starting at 0322. Then you have
stay
on that "new" band for a DURATION of at least 10 minutes.
PLEASE NOTE that the clock STARTS with the FIRST QSO. So if you QSY'ed at
0322, but did
not make a QSO until 0325, then you must STAY on the "new" band through and
including
minute 0334. In this example, your next "different band" QSO cannot start
until 0335.
Finally, please note that there are two separate 10 minute rules: one for the
runner and one
for the multiplier station. And, of course, you may stay on the band (runner
or multiplier or both)
for MORE than 10 minutes duration if you want to.
Hope this helps,
de Doug KR2Q
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