Radio Shack 12-550 User's Manual

Radio Shack Portable Radio User's Manual - 12-550.
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Mount Your Weather Radio

To mount it on the wall, you need two screws (not 
supplied) with heads that fit into the keyhole slots on 
the bottom of the weather radio.
 Use a pencil to mark the screw locations 3 11/16 in 

(94 mm) apart on the wall.

 Drill a hole at each marked location. Thread a 

screw into each hole, making sure each screw’s 
head extends about ¼ in (6.5 mm) from the wall.

 Align the keyhole slots on the bottom of the 

weather radio with the screw heads, and slide the 
radio down to secure it.

 Extend the antenna.

Power Your Weather Radio

Use the supplied 6V, 300mA AC adapter for power 
or an AC/DC adapter (not included) to connect in 
your vehicle. You can also install four AA batteries 
(not supplied) in case AC power fails or is temporarily 
disconnected.

AC Power Connection

 Insert the adapter’s barrel plug into the weather 

radio’s DC 6V jack.

 Plug the other end of the adapter into a standard 

AC outlet.

 Route the adapter’s cord through the strain relief 

on the radio.

Install Batteries

 Slide off the battery 

compartment cover to 
remove it.

 Place four AA batteries 

in the compartment 
as indicated by the 
polarity symbols (+ 
and –) marked inside.

 Replace the cover.

The battery icon (j) shows battery power. When all 
the segments are lit, the batteries have full power. The 
number of lit segments decreases as battery power 
decreases.

Listen to a Weather Channel

When you turn on the weather radio the first time, all 
LCD segments light for a few seconds, and automatic 
channel search begins. When an active channel is 
found,

+ appears. If no channels are detected, 

flashes.
 Press WEATHER/SNOOZE to listen to the weather 

broadcast.

 Press ) or ( to adjust the broadcast volume to 

the desired level. VOL and the volume level (1 – 8)
appear.

 Press WEATHER/SNOOZE to turn off the 

broadcast.

 Press ) or ( to adjust the weather alert volume 

to the desired level. VOL and the volume level (1 – 8)
appear.

Function Setup

Function setup allows you to select a broadcast 
channel, and set the alarm and clock time. You can also 
enable or disable the signal loss reminder so that an 
alert sounds when the radio signal is lost.

Set Channel

 Hold down SET until you hear a beep. CH 1-7

(current channel number) flashes.

 Press SET to enable channel selection. NOAA

appears.

 Press ) or ( to manually change the channel and 

turn on broadcast audio. Hold down ) or ( to 
automatically search for the strongest channel.

 Press SET to confirm the selected channel number. 

The alarm time flashes.

 Hold down SET to return to the normal display. Or, 

press SET to proceed and set the alarm time (see 
next section).

Set the Alarm Time

 Hold down SET until you hear a beep. CH 1-7

(current channel number) flashes.

 Press ) once. The current alarm time flashes.

 Press SET. The alarm hour digits flash.

 Press or hold down ) or ( to set the alarm hour.

 Press SET to confirm. The alarm minute digits flash.

 Press or hold down ) or ( to set the alarm 

minutes.

 Press SET to confirm. The clock time flashes.

 Hold down SET to return to the normal display or, 

press SET to set the clock time (proceed to step 4 
in the next section).

Set the Clock Time

 Hold down SET until you hear a beep. CH 1-7

(current channel number) flashes.

 Press ) twice. The current clock time flashes.

 Press SET. The clock hour digits flash.

 Press or hold down ) or ( to set the hour.

 Press SET to confirm. The minute digits flash.

 Press or hold down ) or ( to set the clock 

minutes.

 Press SET to confirm. % and the current signal loss 

reminder setting (On or OFF) appear.

 Hold down SET to return to the normal display. 

Or, press SET to enable or disable the signal loss 
reminder (proceed to step 4 in the next section).

Enable/Disable the Signal Loss Reminder

 Hold down SET until you hear a beep. CH 1-7

(current channel number) flashes.

 Press ) three times. The current setting (On or OFF)

and % appear.

 Press SET. % flashes.

 Press ) or ( to toggle between On and OFF.

 Press SET to confirm. CH and the current channel 

number flash.

 Hold down SET to return to the normal display, or 

press SET once to return to channel setting mode.

Enable/Disable the Alarm

 Slide ALARM to ON or SNOOZE to enable the 

alarm.

* appears.

 The alarm sounds at the preset alarm time, 

becoming progressively louder the longer it is on.

 To snooze, press WEATHER/SNOOZE. The alarm 

stops for 10 minutes. After 10 minutes, the alarm 
sounds again until you slide ALARM to OFF to turn 
it off.

ZWNOTES

PM appears to indicate PM hours in alarm and 
clock setting modes and disappears to indicate AM 
hours.

The signal loss reminder beep does not sound 
while listening to a NWS broadcast.

The backlight is always on when operating with 
AC power. When operating on battery power, the 
backlight turns on only when you press a button.

The signal strength indicator (

+) shows the power 

of the received signal. If the signal is lost and the 
signal loss reminder is enabled, the radio emits a 
short beep at 30 seconds, 1 minute, 1.5 minutes, 
and so on up to 5 minute intervals. It then sounds 
every five minutes until you press any key, or until a 
signal is received. If you press a key to silence the 
reminder, the reminder beeps will be terminated. 
If a strong enough signal is detected for more than 
10 minutes and lost again, the reminder beep will 
start again at 30 seconds.

DC 6V
Connect the 
supplied AC adapter 
or a car adapter. 

ALERT ON/OFF SWITCH

The weather radio responds to National Weather 
Service (NOAA) alert broadcasts in two ways:

ON

When ALERT is set to ON and an alert 
broadcast is received, an alert sounds for five 
minutes. To stop the alert and listen to the 
broadcast, press WEATHER/ SNOOZE. Press 
WEATHER/SNOOZE again to turn off the 
weather broadcast.

OFF

When ALERT is set to OFF and an alert 
broadcast is received, an alert sounds for 10 
seconds. The radio automatically switches to 
the weather broadcast for five minutes. Press 
WEATHER/SNOOZE to switch from the alert 
tone to the broadcast before the radio switches 
automatically, or to stop the broadcast before 5 
minutes.

ALARM
ON/OFF/SNOOZE

AC Adapter

ZWNOTE: To avoid injury, do not connect the 

provided power adapter to a ceiling outlet.

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