Eton S350DL ユーザーズマニュアル
15
23 DAY BANDS / NIGHT BANDS
DAY BANDS / NIGHT BANDS – THE
DIFFERENCE IS VERY IMPORTANT
Because shortwave signals depend on such factors
as the sun, the ionosphere and interaction with the
earth itself, signals cannot be heard on all bands
throughout the day. Some bands are best during
the daylight hours, and some are best at night. Here
are some good ‘rules of thumb’.
Because shortwave signals depend on such factors
as the sun, the ionosphere and interaction with the
earth itself, signals cannot be heard on all bands
throughout the day. Some bands are best during
the daylight hours, and some are best at night. Here
are some good ‘rules of thumb’.
• In general, the bands with frequencies
below 13000 KHz are better at night and the
bands with frequencies above 13000 KHz are
best during the day. This guideline is not ‘cast in
concrete’ but is a useful general rule of thumb.
bands with frequencies above 13000 KHz are
best during the day. This guideline is not ‘cast in
concrete’ but is a useful general rule of thumb.
• Around sunrise and sunset, both the day
and night bands might be good, sometimes
exceptionally good.
• In the summer time, the day bands often are
good into the early night.
• While most shortwave stations are found
within the frequency limits of these defined
bands, some are found outside of them. It pays to
take the time to tune in-between bands too.
bands, some are found outside of them. It pays to
take the time to tune in-between bands too.
• These guidelines can be used worldwide and
are not dependent on location.
Listed on the next page are the characteristics of
the major shortwave bands. Follow these guidelines
for best listening results.
the major shortwave bands. Follow these guidelines
for best listening results.
S350DL
OWNER’S MANUAL
S350DL
OWNER’S MANUAL
Shortwave listening is generally at its poorest during the daylight hours of about two hours after sunrise
until about two hours before sunset. The major reason for this is that the broadcasters are not transmitting
to North America at this time, assuming that we are all either at work or at school and are not able to listen
during the day. If you want to try daytime listening, use the guidelines below. Typically, daytime shortwave
tends to be better in Eastern North America than in Western North America.
until about two hours before sunset. The major reason for this is that the broadcasters are not transmitting
to North America at this time, assuming that we are all either at work or at school and are not able to listen
during the day. If you want to try daytime listening, use the guidelines below. Typically, daytime shortwave
tends to be better in Eastern North America than in Western North America.
24 DAYTIME LISTENING
DAY BANDS
CHARACTERISTICS
13meters
Results vary. Worth trying. Sometimes extremely good around sunrise and sunset.
16meters
Similar to 19m.
19meters
The best overall daytime band. May also be good at night in the summer months.
Sometimes extremely good around sunrise and sunset. Sometimes good at night in the summer.
22meters
Similar to 19m.