Eton S350 Silver Manuel du propriétaire télécharger pdf (Page 17)

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’.

• 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.

• 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 dened

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.

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.

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.

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Eton S350 Silver Manuel du propriétaire Page 17