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YB 208 page 8
INTRODUCTION
Short Wave (SW)
Your world receiver can receive a number of wavebands. Tuning to
the required FM, MW or LW station will soon become a matter of
routine, as the stations are always to be found at the same place on
the dial and are thus tied to a fixed wavelength and frequency.
With short wave this is unfortunately not always the case. Short
wave transmitters have to change their wavelengths fairly often. In
the short-wave range between 10 and 100-metre wavelength
(frequencies of 30-3 MHz resp.) nine bands between 10 and 50
metres are allocated to short-wave broadcasting, with another four
bands between 60 and 120 metres for broadcasting in the earth's
tropical areas. The latter are roughly located between the latitudes
of 30° north and 30° south, i.e. around the equator. Most short-
wave broadcasting bands, indicated in the short-wave table, are
allocated for the whole world and can be used for international
broadcasting. They are so far the only wavelengths which allow
direct radio reception over long distances. So in addition to the
broadcasting services, there is a large number of other users of short
wave, for example radio amateurs, shipping and aviation, radio
navigation etc.
8
Controls
ON/OFF
– for switching the radio on and off
TUNING
– for selecting the frequency
SW/LW/MW/FM
– selector switch for FM, MW, LW and
SELECTOR
SW band
SW BAND SELECTOR
– selector switch for 9 x SW band
ANTENNA
– telescopic aerial
DC 3V +<-
– external supply socket
for attaching a commercial power supply
using a coaxial plug with 3.8 mm
diameter (output voltage = 3V (200 mA);
supply voltage 230 V AC, 50/60 Hz)
PHONES p
– for headphones with 3.5 mm jack plug
when a headphone jack is plugged in, the
loudspeaker of the unit is automatically
switched off
E VOL
– for adjusting the volume
TUNING 6
– tuning indicator
Base of the set:
– Battery compartment for two batteries type
IEC LR6/UM-3/AA (alkaline manganese
batteries)
CONTROLS
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