Uniden Receiver Atlantis 250 Operating Instructions

							Using the Alkaline Battery Case
When needed, you can use the battery case with Alkaline AA
batteries (not included) instead of the rechargeable battery pack. 
To install the batteries:
Remove the battery case cover by pulling the
2 halves apart applying your fingers to the
projections.
Install 6 AA Alkaline batteries (not included)
into the battery case. 
Be certain to follow the + and – symbols in
the compartment.
Replace the battery case cover as follows
until it clicks into place.
Attaching the Beltclip
Hold the beltclip in the direction as
illustrated.
Apply it to the hanger piece on the back
of the radio. Then slide it up.
When you hear a click, the beltclip is
firmly attached.
To take the beltclip off the radio, turn it
upside down and slide it up.
4
3
2
1
3
2
1
9
AA
AA
AA
AAAA
AA
UT01899ZZ_1_ENG.QX  8/15/03 3:11 PM  Page 9 
						

							Charging the Battery Pack
Your marine radio is powered by a specially designed Ni-MH
battery pack.
•Before operating the ATLANTIS 250, charge the Ni-MH battery
pack for 16 hours without interruptionwith the Adapter.
Place the ATLANTIS 250in the Cradle.
Make sure your radio is OFF.
Plug one end of the AC adapter into the
wall outlet and the other end into the
Adapter jack on the back of the ATLANTIS
250.
Charge the battery for 16 hours.
•The charger won’t overcharge the battery pack. After 16 hours
without interruption, charging is completed.
•Be sure to replace the rubber cap after charging in order to
secure the waterproof seal.
•The radio will not charge the battery while on and receiving
incoming voice traffic.
•When you mount the Cradle on your boat, use the DC adapter
instead.
•The jack is for charging only. If the battery level is low, the radio
needs to charge before use.
3
2
1
10
AT LANTIS 2 5 0WXALERTUIC1/ 5W16/9
TRILOCKMICMENSCANAT LANTIS 2 5 0WXALERTUIC1/ 5W16/9
TRILOCKMICMENSCANAT LANTIS 2 5 0WXALERTUIC1/ 5W16/9
TRILOCKMICMENSCANAT LANTIS 2 5 0WXALERTUIC1/ 5W16/9
TRILOCKMICMENSCANAT LANTIS 2 5 0WXALERTUIC1/ 5W16/9
TRILOCKMICMENSCAN
AT LANTIS 2 5 0WXALERTUIC1/ 5W16/9
TRILOCKMICMENSCAN
UT01899ZZ_1_ENG.QX  8/15/03 3:11 PM  Page 10 
						

							Operation
•See “Controls and Indicators” (page 2) for button, knob, and key
positions.
•When you turn On your ATLANTIS 250just after purchasing, it is
automatically tuned to channel 16, the United States Coast
Guard frequency for distress, safety, and calling.
•When you press any button (except PTT), a short tone sounds.
Turning On the Unit and Setting Squelch
Before you turn On the unit, turn the
squelch (SQ) knob fully counterclockwise.
Then, turn On the unit by turning the
Volume/Power (VOL) knob clockwise
until you hear a hissing sound.
Turn the SQknob clockwise, just until the
hissing sound stops. Use the knob to adjust
to the desired squelch level. Think of the
squelch control as a frequency gate which
controls access to weak or strong signals
depending on its setting.
•To listen to a weak or distant station,
turn the knob 
counterclockwise. If reception is poor, turn it clockwise to cut
out weak transmissions.
•If the squelch control is adjusted so that you continually hear a 
hissing sound, the unit will not scan properly.
To turn Off the unit, turn the VOL knob counterclockwise until it
clicks.
4
3
2
1
11
SQSPKR
MICVOL
Noise Weak Signals Medium Signals
Strong Signals
UT01899ZZ_1_ENG.QX  8/15/03 3:11 PM  Page 11 
						

							Selecting a Channel
Turn On your ATLANTIS 250.
To select a higher channel, 
press the ▲button.
To select a lower channel, 
press the ▼button.
•To change the channel continuously,
press and hold the ▲or ▼button for
more than 1 second.
One-touch Channel 16/9/TRI
Example:While you are monitoring channel 20, you want to check
channel 16 or channel 9.
You are now on channel 20.
To monitor channel 16, press the
16/9/TRIbutton.
To monitor channel 9, press the 
16/9/TRIbutton again.
To return to channel 20, press the
16/9/TRIbutton again.
4
3
2
1
3
2
1
12
[UP ]
[
DOWN ]
UT01899ZZ_1_ENG.QX  8/15/03 3:11 PM  Page 12 
						

							Triple Watch
Triple Watch mode monitors channels 16 and 9 for a signal while
you listen to the currently selected channel. The marine radio
checks channel 16 and 9 for activity every 2 seconds.
To select Triple Watch mode, press and
hold the 16/9/TRIbutton for 2 seconds. A
double confirmation tone sounds and
TRIPLEappears on the display.
To exit from Triple Watch, press and
hold the 16/9/TRIbutton for 2 seconds.
A double confirmation tone sounds and
TRIPLEdisappears.
•While in Triple Watch mode, you can
change the currently selected channel
using the ▲or ▼button.
•A momentary press of the 16/9/TRI
button interrupts Triple Watch mode 
and remains on 16, or on channel 9 if
you press once more. To return to
the Triple Watch mode, simply press the 
button again.
2
1
13
UT01899ZZ_1_ENG.QX  8/15/03 3:11 PM  Page 13 
						

							Monitoring Weather Channels
The ATLANTIS 250has 10 preprogrammed emergency/weather
channel frequencies, represented by 0 through 9.
To listen to the emergency/weather
channels in your area, press the
WX/ALERTbutton. WXappears on the
display.
To move up, press the ▲button.
To move down, press the ▼button.
To exit, press the WX/ALERTbutton. 
WXdisappears from the display.
•To change the channel continuously,
press and hold the ▲or ▼button for
more than 1 second.
4
3
2
1
14
[UP ]
[
DOWN ]
UT01899ZZ_1_ENG.QX  8/15/03 3:11 PM  Page 14 
						

							Emergency/Weather Alert
Emergency/Weather Alert allows your ATLANTIS 250to function
as a severe weather warning radio and will also alert you to any
local or national emergencies. If the NOAA issues warning while
this feature is turned On, the radio sounds an alert tone. You will
then hear the emergency/weather broadcast.
To use Emergency/Weather Alert, select the
emergency/weather channel in your area.
Press and hold the WX/ALERTbutton for 
2 seconds. A double confirmation tone
sounds.
When the unit receives a warning signal,
it beeps for 5 seconds. WX, ALERT, and
the channel number blinks.
To turn Off Emergency/Weather Alert,
press and hold the WX/ALERTbutton for
2 seconds. A double confirmation tone
sounds.
•When Emergency/Weather Alert is activated, the highest priority
is given this function. If the unit is in Scan, Triple Watch, or any
other marine channels, it checks the weather alert signals every 
7 seconds and switches to the warning receive mode 
automatically.
4
3
2
1
15
UT01899ZZ_1_ENG.QX  8/15/03 3:11 PM  Page 15 
						

							USA, International and Canadian Channels
The ATLANTIS 250is initially set for
USA marine channels when you turn On 
your radio.
To listen to international marine 
channels, press the UICbutton once.
INTappears on the display.
To listen to Canadian marine channels,
press the UICbutton again.
CANappears on the display.
The radio will keep the last mode setting
that was selected when turned back On.
•For USA, international and Canadian
marine channels and functions, refer to
the tables starting on page 20.
Programming a Channel into Memory
Before using the scanning feature, you have to program channels
into memory.
Select the channel to enter into memory
by pressing the ▲or ▼button.
Press the MEMbutton to store the 
channel. MEMappears on the display.
2
1
4
3
2
1
16
UT01899ZZ_1_ENG.QX  8/15/03 3:11 PM  Page 16 
						

							Deleting a Channel from Memory
Select the channel to delete from 
memory by pressing the ▲or ▼button.
Press the MEMbutton. 
MEMdisappears from the display.
Scanning
To begin scanning the programmed
channels, press the SCANbutton. SCAN
and TRIPLEappear on the display.
To stop scanning, press the SCAN
button once more. SCANand TRIPLE
disappear from the display.
•  Scanning starts from the lowest to highest channel and stops
when it finds an active channel. It remains on that channel until
the transmission ends, then resumes scanning after a 2 second
delay period.
•When in the scan mode, the unit automatically activates the
Triple Watch feature. To deactivate Triple Watch from the 
scanning mode, press and hold the 16/9/TRIbutton for 
2 seconds. TRIPLEdisappears from the display.
2
1
2
1
17
UT01899ZZ_1_ENG.QX  8/15/03 3:11 PM  Page 17 
						

							Transmitting
Transmission power can be set to either
5W or 1W. 
Press the 1/5W/LOCKbutton to make
the change, then the 5Wor the 1W
indicator on the display changes
accordingly.
To transmit, press and hold the PTT(push-to-talk) key. 
TXappears on the display.
To return to receive, release the PTTkey. 
TXdisappears from the display.
•If the PTTkey is pressed for more than 5 minutes, TXstarts
blinking and the transmission ends. The TX time out tone will
sound until the PTTkey is released.
•If the battery indicator drops to the blinking 1-mark level on the
display and the PTTkey is pressed, the radio will not transmit
and the TXicon starts blinking. (Refer to the description of the
Battery Indicator on the next page.)
Lighted Keys and Display
To light the display, press any key excluding the PTTkey.
•If you press any button other than the PTTkey while the display
and keypad are illuminated, it remains illuminated for another 
5 seconds.
Turning and reactivating the Key Beep
Your radio emits a beep each time one of the buttons (except for
the PTTkey) is pressed.
To turn off or reactivate the Key beep:
Turn the radio on again while pressing and holding the ▲or ▼
buttons.
3
2
1
18
UT01899ZZ_1_ENG.QX  8/15/03 3:11 PM  Page 18