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...

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...

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...

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,...

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...

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...

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...

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....

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...

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...