Choosing a Channel
Your radio has 22 channels and 38 CTCSS codes you can use
to talk to others. In order to speak to someone, each of you
must be set to the same channel and CTCSS code.
To choose a channel:
With the radio in "Normal" operating mode press the
CH/SCAN
or
key to increase or decrease the channel number
displayed.
Note:
Channels 1-14 have an expectancy range of up to
approximately 2 miles. Channels 15-22 have an expectancy
range of up to approximately 5 miles.
GMR223
* Range may vary depending on environmental and/or topographical conditions.
• 8 GMRS / 14 FRS Channels
• 38 CTCSS Codes
• Up to 5 Mile Range*
• Internal VOX Circuitry
• 5 Selectable Call Tone Alerts
• Backlit LCD Display
• Headset Jack (Headset is optional
and not included)
• Battery Recharge Circuit
• 2 NiMH Battery Pack
• Dual Charging Cradle
with AC Adapter
1 Antenna
2
PTT
(Push-To-Talk) Button
3
CH/SCAN
(Channel/scan up) Key
4
CALL
Key
5
CH/SCAN
(Channel/scan down) Key
6
SEL
/
(Select/Power) Key
7 Speaker
8 Headset Jack (Headset is optional and
not included)
9
MON
(Monitor) Key
10
VOL
(Volume up) Key
11
VOL
(Volume down) Key
12 Charging LED’s
13 Battery Level Meter
14 Receive Indicator
15 Scan Indicator
16 Channel Indicator
17 Call Indicator
18 VOX Indicator
19 Keypad Lock Indicator
20 Transmit Indicator
21 Volume Setting Indicator
22 CTCSS Indicator
Congratulations on your purchase of the Sylvania GMR223
(General Mobile Radio Service) radio. This product is a
lightweight, palm-sized radio. Use it at sporting events to stay
in contact with family and friends, hiking, skiing, outdoors, or in
a neighborhood watch for vital communication. This compact,
state-of-the-art device is equipped with many features.
INSTALL THE BATTERIES
Your GMR223 radio uses the included NiMH battery pack or 4
AAA alkaline batteries (not included). If alkaline batteries are
used, we recommend using high quality alkaline batteries.
To install the NiMH battery pack:
1) Make sure your radio is OFF.
2) Remove the battery compartment door by pressing the tab at
the bottom of the compartment door allowing the door to be
removed.
3) Place the NiMH battery pack in the compartment, making
sure that the charge contacts are on the lower half of the
battery pack and facing out. If the NiMH battery pack is
installed incorrectly, the unit will not operate.
4) Replace the battery compartment door.
5) The battery pack must be charged before using for the first
time. Place the GMR223 radio into the charging cradle
allowing 16 hours charging time to fully charge the battery
pack.
Note:
Always make sure your battery pack is fully discharged
before recharging to prolong the life of the battery pack. The
LED will illuminate while the radio is in the charging cradle.
To install 4 AAA alkaline batteries (not included):
1) Make sure your radio is OFF.
2) Remove the battery compartment door by pressing the tab
at the bottom of the compartment door allowing the door to
be removed.
3) Install 4 AAA alkaline batteries (not included) into the
battery compartment. Be certain to follow the + and –
symbols in the compartment. Installing the batteries
incorrectly will prevent the radio from operating.
4) Replace the battery compartment door.
USING THE RADIO
In order to get the most out of your new radio, read this
reference guide completely before attempting to operate the
unit.
Turning the Radio On and Adjusting the Volume
1) Press and hold the
SEL/
key to turn the unit ON, and
increase the speaker volume by pressing the
VOL
key. To
decrease the volume, press the
VOL
key.
2) Press and hold the
SEL/
key again to turn the unit OFF.
Adjusting the Sound (Key Beeps)
Your radio emits a beep each time one of the buttons or keys
(except for the
PTT
button and
CALL
key) are pressed. To turn
this sound OFF, press and hold
CALL
while turning ON the
radio. Repeat this step to turn the sound ON.
• Battery Level Meter
• Channel Monitor
• Channel Scan
• Keypad Lock
BATTERY LEVEL AND LOW
BATTERY ALERT
This unit has a battery level meter on the display to indicate
the status of the batteries. When the batteries in the unit are
low, the battery level meter icon
will flash. Replace the
alkaline batteries immediately or if you are using the NiMH
1) To enter the Menu, press the
SEL/
key.
2) Additional presses of the
SEL/
key will advance you
through the Menu until exiting to "Normal" operating mode.
3) Other methods of exiting the Menu function are:
a. Press and hold the
SEL/
key again.
b. Press
PTT
,
MON
,
VOL
/
, and
CALL
.
c. Wait 10 seconds until the unit automatically returns to
"Normal" mode.
Choosing a CTCSS Code
Each of the channels 1-22 may have any one of the codes,
OFF or 1-38 selected. Code "OFF" indicates no CTCSS code
selected and your radio can receive a signal regardless of the
code settings of the transmitting radio.
1) Enter the Menu. The CTCSS code on the LCD display will
flash.
2) Press the
CH/SCAN
or
key to increase or decrease
the code number displayed. You can also select "OFF" at this
stage.
3) Exit the Menu to return to "Normal" mode.
Talking on Your Radio
To talk to others using the radio:
1) Press and hold the
PTT
button and speak in a clear, normal
voice about 2-3 inches away from the microphone. While you
are transmitting, the
icon will appear on the display. To
avoid cutting off the first part of your transmission, pause
slightly after pressing the
PTT
button before you start talking.
2) When you are finished speaking, release the
PTT
button. You
can now receive incoming calls. While receiving, the
icon
will appear on the display.
Voice Operated Transmission
Your GMR223 radio is equipped with a user selectable Voice
Operated Transmitter (VOX) that can be used for automatic
voice transmissions. The VOX feature is designed to be used
with a headset with a microphone (not included). Transmission
is initiated by speaking into the remote microphone instead of
pushing the
PTT
button.
To select the VOX level:
1) Enter the Menu. Advance through the Menu until the
vox
icon
appears on the display. The current level (off, 1-3) will be
indicated. Level "oF" disables VOX, while levels
-
set
the sensitivity of the VOX circuit.
2) Press either the
CH/SCAN
or
key to the desired VOX
sensitivity level. Use level 1 for increased sensitivity to voice
in normally quiet environments, and use a higher level to
reduce undesired activation in very noisy environments.
3) Exit the Menu.
Transmitting a Call Tone
Your GMR223 radio is equipped with 5 selectable call tones
that will be transmitted when the
CALL
key is pressed.
To select a call tone:
1) Enter the Menu. Advance through the Menu until the
call
icon
is shown on the display. The current call tone number
(
-
) will be indicated.
2) Press the
CH/SCAN
or
key to increase or decrease
the number to the desired call tone. Each tone will be heard
through the speaker.
3) Exit the Menu.
To transmit the selected call tone, press the
CALL
key.
The selected tone will automatically be transmitted for a fixed
length of time.
Normal
Normal
CTCSS
VOX Level
Call Tone
Key Lock
1-5
off, 1-38
off, 1-3
ON-OFF
GMR223 RADIO
Navigating through the Menu
To access the advanced features of the GMR223, your radio
has a Menu function.
PACKAGE CONTENTS
Your package contains 2 x GMR223 radios, 2 x NiMH battery
packs, 2 x belt clips, a dual recharging cradle with AC adapter
and this reference guide.
battery pack, you must recharge the battery pack in order to
continue using the radio.
Warning!
To avoid the risk of personal injury or property
damage from fire or electrical shock, only use the Sylvania
accessories specifically designated for this product.
Channel Scan Feature
Your GMR223 radio has a channel Scan feature that allows
you to easily Scan all 22 channels. When an active channel is
detected, the radio will pause on that channel until the channel
is clear. Then after a 2 second delay, the radio will continue
scanning. Pressing
PTT
while the Scan is paused on a channel
will allow you to transmit on that channel.
To turn ON channel scanning:
Press and hold either the
CH/SCAN
or
key until the
scan
icon is displayed. The channel number on the display will
change as the radio rapidly cycles through the channels.
To turn OFF channel scanning:
Press
SEL/
,
CALL
, or
PTT
.
Keypad Lock
To Lock the keypad:
1) Enter the Menu. Advance through the Menu until the
icon appears on the display. The current key Lock status
(
OFF
) blinks on the display.
2) To switch the key Lock mode from
OFF
to
ON
, press the
CH/SCAN
key.
3) To confirm the setting, press the
SEL/
key.
The radio returns to the "Normal" mode.
Note:
If you exit the setting mode before confirming your
selection by pressing the
SEL/
key, the key Lock setting will
be set to
OFF
.
To Unlock the keypad:
1) Press and hold the
SEL/
key to turn the radio
OFF
.
2) Press and hold the
SEL/
key again to turn the radio
ON
.
The keypad is unlocked.
Automatic Power Save Feature
Your GMR223 radio has a unique circuit designed to
dramatically extend the life of the batteries. If there is no
transmission nor an incoming call within 3 seconds, your radio
switches to the Power Save mode. The radio is still able to
receive transmissions in this mode.
LCD Backlight
The LCD backlight will automatically turn ON when any key
(except
PTT
button) is pressed. The LCD display will illuminate for
10 seconds before turning OFF.
Monitor Mode Feature
Your GMR223 radio allows you to listen for weak signals on the
current channel at the press of a key.
To turn ON the monitor mode:
1) Press
MON
for brief listening, the
icon will blink.
2) Press and hold
MON
for 2 seconds for continuous listening.
The receiver circuit will stay open, and let in both the noise
and weak signals.
To turn OFF monitor mode:
Press
MON
to return to "Normal" mode, and the
icon
stops blinking.
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