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we should not forget that we have seen dramatic improve­
ments in the regulatory scene in the past 5 years. There is
reason to hope that further improvements can be realized in
the next few years.
In Europe 1840 kHz is the usual bottom end of the
phone band. But it appears many operators are not aware that
if they operate on a carrier frequency of 1840 kHz on LSB
their sidebands spread 3.0 kHz down and that they are
therefore taking out 40% of the primary DX CW window in
Europe. Fortunately, the IARU band plan now clearly stipu­
lates that the 1840-kHz bottom-end means no one should
transmit (on LSB) below a carrier frequency of 1843 kHz.
Note that contrary to what has been done on 80 meters,
the IARU never created a DX portion on 160 meters, reserved
only for intercontinental work. Common sense, however,
has created de-facto DX segments on 160 meters. 1830 to
1840 kHz is generally considered the European CW-transmit
segment, while the DX segment of 1820 to 1830 kHz is
generally considered the DX window in Europe (that’s where
the DX is, and where the Europeans—as well as US sta­
tions—should stay out of).
DXpeditions seem to use the 1823 to 1828-kHz window
most of the time. More recently they have made the wise
decision to work on the so-called half-frequencies (eg, 1823.5
kHz). This avoids the spurs and birdies often present in some
receivers on even-kHz frequencies. In addition, always avoid
1818 kHz, the W1AW broadcast frequency used for code
practice and bulletins. Other frequencies to avoid are exact
multiples of 10 kHz (1810, 20, 30, etc) for North American
stations and multiples of 9 kHz (1809, 18, 27, etc) for
stations in IARU Regions 1 and 3. This is because of BCI
images from broadcast stations in the MF band (10-kHz
spacing in NA and 9 kHz elsewhere).
While it is true that frequency assignments are not the
same in all places, it seems that the minor differences are not
a huge problem. Over the years it seems that the different
administrations are indeed trying to align themselves.
Band plan for Japan (recently changed):
• 1907.5 to 1912.5 kHz: CW only window (original alloca­
• 1810 to 1825 kHz: CW only (new allocation)
Whether or not this is an improvement is not clear. It is
obvious that this new window is now clear from low-power
Russian AM-stations, but since most QSOs in the 1810 to
1825-kHz window are no longer made in split-frequency
mode, there are now other sources of QRM (the calling
Band plan for Russia, as well as in the CIS (former USSR)
• 1810 to 2000 kHz: CW
• 1840 to 2000 kHz: SSB and CW
Band plan for Australia:
• 1800 to 1810 kHz: Digital modes
• 1810 to 1835 kHz: CW
• 1835 to 1870 kHz: SSB. In international contests SSB may
be used down to 1830 kHz.
Dennis, KØCKD has compiled a list of the frequency
allocations on 160 meters for all countries. See www.


4.3.2. Let’s be practical on 80 meters The DX windows:
Although the 80-meter band is not allocated uni­
formly for all continents and countries, this does not
really represent a problem for the DXer. On CW all
countries have an allocation starting at 3500 kHz. The
DX window for CW is the same all over the world: 3500
to 3510 kHz. A secondary de-facto window exists
between 3525 and 3530 kHz, which is the lower limit for
General and Advanced Class amateurs in the US.
The SSB 80-meter SSB DX window is 3775 to 3800
kHz. While the 3500 to 3510 CW DX window has been
internationally recognized by the IARU in both Region 1 and
2 (see Section 4.1), this is not the case for the Phone DX
window, which is only recognized by the IARU as a DX
window in Region 1. This is not good, and some alignment
in these matters in order.
Fortunately, common sense sometimes achieves more
than rules, and in Region 2 and 3 these same 25 kHz are also
accepted as DX bands by most operators. Anyhow it’s
common sense that reigns, since IARU band plans are not
enforced by law in a great majority of countries. It really is
a gentleman’s agreement that we should all follow, at least
if it makes common sense! If not, we should ask our societies
to change their band plans.
In the middle of the day, the DX segments can be
used for local work, although you should be aware that
local QSOs can cause great QRM to a DXer (at, say, 500
miles) who is already in the grayline zone, and who might
just be enjoying peak propagation conditions at his QTH. In
Europe situations like this occur almost daily in the winter,
when northern Scandinavian stations can work the Pacific
and the West Coast of the US at 1300 to 1400 UTC, while
Western Europe is in bright daylight and does not hear the
DX at all. Western Europeans can hear the Scandinavians
quite well, and consequently the Scandinavians can also
hear Western Europe well enough to be QRMed. The same
is true for NA when Eastern NA local rag chews can interfere
with DX for more westerly stations that still have darkness.
Hams must be aware of these situations so they don’t inter­
fere with DXers in other adjacent areas.
Most countries in Western Europe can operate any­
where between 3.5 and 3.8 MHz, and in most countries there
are no mode subbands imposed by the government. The band
plan for Russia and CIS countries (former USSR) has changed
and is now the same as in all Western European countries.
Band Plan for Western Europe and CIS Countries:
• 3500 to 3580 CW
• 3580 to 3600 RTTY, Packet, CW
• 3600 to 3800 SSB, CW
Band plan for Australia:
Australia has a somewhat peculiar band-plan. The
most important change in recent years is the coming expan­
sion of the SSB DX section from 3775 to 3800 (starting in Jan
• 3500 to 3700 and 3795 to 3800 CW
• 3535 to 3620, 3640 to 3700, 3775 to 3800 SSB
• 3620 to 3640 Digital modes

Chapter 2


2/8/2005, 9:43 AM