DIGITECH Audio S450 Manuale utente
WORLD BAND RADIO
AM/FM/Shortwave field radio with LCD backlight
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OWNER’S MANUAL
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3
WARNING
• Do not expose this appliance to rain or moisture.
• Do not submerge or expose to water.
• Protect from high humidity and rain.
• Only operate within specied temperature range (0 °C to 40 °C).
• Unplug immediately if liquid has been spilled or object have fallen
into the apparatus.
• Clean only with a dry cloth. Do not use detergents or chemical
solvents as this might damage the nish.
• Unplug and disconnect external antennas during lightning storms.
• Do not remove cover [or back].
• Refer servicing to qualied service personnel.
4
INSTALLING BATTERIES
The battery compartment is on the back of the radio. Remove it by
pressing the two tabs and pulling up. Install only fresh, new alkaline
D cells, all of the same brand and type. To prevent battery acid leak-
age, follow these instructions. Battery acid leakage is not covered by
the radio’s warranty. Never install or replace with batteries of dierent
brands and types. Never intermix old batteries with new ones. When
not using the radio for more than 30 days, remove the batteries.
USING BATTERIES
Use 6 D size alkaline batteries. Install them with correct polarity us-
ing the diagram inside the battery compartment on the back of the
radio. Replace them if the battery strength indicator in the display
shows one bar or the sound becomes distorted. The radio will turn
o automatically if the batteries become too weak.
BATTERY LEVEL INDICATOR
The battery level indicator is in the upper left corner of the display.
When batteries are full, “ ” will be displayed in the LCD; if “ ”
flashes, it indicates that batteries are low and the radio will soon turn
o automatically.
5
USING AC POWER
Plug AC adapter into the socket on the left side of the radio. Use
only the AC adapter supplied. When the AC adapter is plugged in,
the full power level will show in the upper left corner of the display,
looking like a full battery. If you lose the AC adapter that came with
the radio, use one with 9 Volt DC output, negative polarity, 500
milliampere and a plug with 5.5 millimeter outer diameter, 2.1
millimeter inner diameter.
POWERING FROM A CAR OR BOAT
Use a DC to DC converter. Output: 9 Volt DC, negative polarity, outer
diameter 5.5 millimeter; inner diameter 2.1 millimeter.
TURNING ON AND OFF / SETTING AND
DEACTIVATING THE SLEEP TIMER
Turn on the radio by pressing the red POWER & SLEEP button on the
front top right corner of the radio. When it turns on you will briefly
see a sleep timer symbol in the bottom portion of the display, this
is the sleep time and the radio will play for this amount of minutes
and then shut o. It can be deactivated by continuously pressing the
power button until ‘on’ appears in the bottom of the display; with
each press you will see the numbers going down from 90 to 60 to
45 to 30 to 15 to 10 to 5 to 1 minute and then to ‘on’. When ‘on’
appears, stop pressing the button. The sleep timer is now disengaged
and you don’t have to change it unless you want a sleep time to
appear.
To activate the sleep timer, turn the radio on and press the POWER &
SLEEP button continuously until the desired sleep time appears. The
radio will play for the specified length of time and automatically shut
o. The sleep timer symbol will show in the display, “ ”.
6
TURNING ON AND OFF
Turn on the radio by pressing the red POWER & SLEEP button on the
front top right corner of the radio. When the unit is on, press the
POWER & SLEEP again to turn the radio o.
SETTING AND DEACTIVATING THE SLEEP TIMER
To activate the sleep timer, turn the radio on and press the POWER &
SLEEP button continuously until the desired sleep time appears. The
sleep timer symbol will show in the display, “ ”. With each press,
the display will show the following on/sleep options: On, 90 to 60 to
45 to 30 to 15 to 10 to 5 to 1 minute and then to ‘on’. The radio will
play for the specied length of time and automatically shut o. When
‘on’ appears, the sleep timer will be disengaged.
VOLUME KNOB
Turn up the volume by turning the volume knob clockwise (right),
down by turning the knob counterclockwise (left).
POWER FAILURE BACKUP FEATURE
If batteries are in the unit and it is powered via its AC adapter, it will
automatically switch to battery use if there is an AC power failure.
7
USING THE LOCK BUTTON
To lock all of the keys and buttons press and hold the LOCK button
”” (front top of the radio) until you see a symbol of a key appear
in the top, middle of the display. Press the same button for 2 seconds
to unlock it.
USING THE QUICK TUNE BUTTON
To quickly tune across a band press the Q.TUNE button. It will save
you time when going to a frequency on the other end of the band.
This works on AM, FM and Shortwave.
THE TUNING KNOB CONTROLS:
STOP, SLOW, FAST
Above the tuning knob are the STOP, SLOW and FAST buttons. Pressing
STOP locks the tuning dial. Press it again to unlock it. Pressing SLOW or FAST
gives you slow tuning or fast tuning. Use which ever one that you prefer.
ANTENNA DX/LOCAL SWITCH
(right side of radio)
If the station you’re listening to is so strong that it sounds distorted,
turn this switch to the LOCAL position. Otherwise, leave it on DX,
which stands for maximum distance.
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TUNING IN FM STATIONS
The FM frequency range is from 87.5 to 108 MHz.
Fully extend the telescopic antenna and turn on the radio.•
Place the top BANDWIDTH control onto the MONO or STEREO•
position. Stereo is needed only when you’re using headphones and
STEREO appears above the top left of the frequency in the display.
FM mono has better signal and noise ratio as well as anti-multiplex
interference.
Tune in the station with the TUNING knob or by pressing the UP/•
DOWN button or by pressing and holding the UP/DOWN button for
one second to engage auto tuning.
BASS/TREBLE KNOBS
Use these knobs to control the bass and treble response of the radio’s
speaker system.
USING THE AM RF GAIN KNOB
When listening to AM (MW) broadcast stations, this control knob
should be dialed to or near position 5. If you are listening to a weak
station, increase the gain, when listening to extremely strong stations,
decrease the gain. For listening to Shortwave stations, place this
control to maximum gain and decrease the gain as necessary.
9
TUNING IN MW STATIONS (AM);
CHANGING THE TUNING STEPS
MW, or medium wave stations, known as AM stations, range from
520 -morfdnazHK0171 522 1620 KHz in other parts of the world.
une in 9 KHz steps and in other parts of the world they may tune
in 10 KHz steps.
T
he radio is set up for 9 KHz tuning by default, but
to change the steps to 10 KHz, go into the battery compartment and
move the switch from 9 KHz to 10 KHz and then press the reset
button with a paper clip. The switch is located on the middle of the
ridge between the upper set and lower set of batteries.
Turn on the radio.1.
Place the top BANDWIDTH switch into the W or N position (wide or2.
narrow). Place bottom BANDWIDTH switch into the MW position.
Place AM/SW RF GAIN switch into the 5 position, higher if necessary.3.
Tune in the station with the TUNING knob or by pressing the UP/4.
DOWN button or by pressing and holding the UP/DOWN button for
one second to engage auto tuning.
Use WIDE if no interference is present. Use NARROW if
interference is present.
-
T
10
TUNING IN SW (shortwave) STATIONS
Turn on radio.1.
Place the upper BANDWIDTH switch in the W or N position.2.
Place the lower switch into SW1, SW2 or SW3.
Place AM/SW RF GAIN control into the 10 position; decrease3.
if necessary.
SW appears in frequency range of 1711 to 29999 KHz.4.
Tune in the station with the TUNING knob or by pressing the UP/5.
DOWN button or by pressing and holding the UP/DOWN button for
one second to engage auto tuning.
TUNING TO SW FREQUENCY RANGES (BANDS)
Tune to these frequency ranges for best results. The radio can also
tune between these ranges.
Meter Band (m) Frequency Best Time of Day
90m 3,200-3,400 kHz
75m 3,900-4,000 kHz
60m 4,750-5,050 kHz night
49m 5,800-6,200 kHz night
41m 7,100-7,500 kHz night
31m 9,500-10,000 kHz night
25m 11,650-12,200 kHz
19m 15,100-15,800 kHz day
16m 17,550-17,900 kHz day
15m 18,900-19,020 kHz
13m 21,450-21,850 kHz day
11m 25,600-26,100 kHz day
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