Alinco DJ-X11 - Manual (Page 32)

32
6. Operating Modes
6
6-6 Receiving Operation
CAUTION
• Communication is not broadcasting. In most cases, communication is
established when necessary using minimum facilities. It is extremely
rare for communication to send radio signals frequently. Unlike radio
broadcasting, it is not always easy to receive communication.
• The noise you hear while no signal is received (called background
noise or white noise) may vary in condition, volume and sound quality
depending on the modulation mode, aerial condition, frequency and so
on, and this is not a malfunction.
• The radio signal strength and sound quality which can be received may
be affected by various factors including the power supply to be used (AC
adapter or battery), locations/conditions (presence of electric appli-
ances such as fl uorescent lamps or TV, wooden or steel bar reinforced
building, region, whether the user is standing still or walking, etc.) and
aerial condition, and this is not a malfunction.
• The supplied whip antenna is designed mainly to receive the V/UHF
bands outdoors. To effi ciently receive signals indoors which are in the
long wave, medium wave, short wave, and 1000 MHz or higher UHF
bands, install a commercially-available external antenna suitable for
the respective frequencies.
• In an area affected by an intense electric fi eld, such as an area close to
mountains where many transmission towers or stations exist, you may
experience signal overlapping such as when airplane communication
overlaps a radio broadcast sound. This, however, is not a malfunction.
Using the Attenuator or RF Gain function described later can reduce
such interference and interruption.
• The DJ-X11 receives radio signals over a very wide range, however,
when it is compared with radios or receivers specifi cally designed for a
certain frequency range, its sensitivity, sound quality and volume may
be inferior within that range. This is because their circuit designs are
completely different; this is not a malfunction.
• The preset mode cannot be used with the sub band.
• When a certain combination of frequencies is set for the main and sub
bands, one or both bands may experience reception failure, interfer-
ence or unstable operation. This is due to the attempt to receive sig-
nals with two bands simultaneously and is unavoidable.
Please read and understand the above cautions before reading the rest of this
manual. The operation of some functions may be diffi cult to understand unless
you actually see the operation while receiving signals. It is recommended to
practice operation by receiving actual AM/FM broadcasts.