GMR1558-2CK
• 15 GMRS / 7 FRS Channels | • Power Boost Button for |
• 142 Privacy Codes | | Maximum Range |
| (CTCSS Tone and DCS Code) | • Battery Charger |
• Up to 15 Mile Range* | • Battery Level Meter |
• Scramble | • Channel Monitor |
• | Internal VOX Circuitry | • | Channel Scan |
• | 5 Selectable Call Tone Alerts | • | Keypad Lock |
• Backlit LCD Display | • | DC IN 9V Jack |
•Optional Headset Accessories
•Headset Jack
•Roger Beep
*Range may vary depending on environmental and/or topographical conditions.
GMR1558-2CK RADIO
1 | Antenna | 15 | Receive Indicator |
2 | PTT (Push-To-Talk) Button | 16 | boost Indicator |
3 | Power Boost Button | 17 | Call Indicator |
4 | Monitor Key | 18 | Scan Indicator |
5 | Menu Key | 19 | Channel Indicator |
6 | Channel Tone/Scan Key | 20 | Hi Power Indicator |
7 | Speaker | 21 | Low Power Indicator |
8 | Up/Down Button | 22 | Transmit Indicator |
9 | Headset Jack | 23 | Volume Setting Indicator |
10 | On/Off Key | 24 | Keypad Lock Indicator |
11 | Call Key | 25 | VOX Indicator |
12 | Microphone | 26 | Privacy Code Indicator |
13 | DC IN 9V | 27 | Scramble Indicator |
14 | Battery Level Meter | 28 | Charging Contacts |
Congratulations on your purchase of the Uniden GMR1558-2CK (General Mobile Radio Service) radio. This lightweight, palm-sized, radio is a state-of-the-art device, equipped with many valuable features. Use it at sporting events, to stay in contact with family and friends, hiking, skiing, outdoors, or in a neighborhood watch for vital communication.
PACKAGE CONTENTS
Your package contains two GMR1558-2CK radios, two rechargeable NiMH battery packs (#BP38), two AC adapters (#AD-1004), two charging cradles (#RC1041), two belt clips and this reference guide. You can operate the unit using the rechargeable NiMH battery pack or 4 AAA alkaline batteries (not included).
To order the following optional accessories, visit our web site @www.uniden.com or call 1-800-554-3988,Mon-Fri, 8 a.m. to 5 p.m. CST. Use only Uniden accessories.
•NiMH Battery Pack - #BP38
•Charging Cradle - #RC1041
•Headset - #HS910/HS915
•AC Adapter - #AD-1004
•DC Adapter - #DC-1002
GMRS LICENSE
The GMR1558-2CK radio operates on the General Mobile Radio Service (GMRS) frequencies when using Channels 1-7 and channels 15-22. You must have a GMRS license issued by the Federal Communications Commission to legally use these channels.
For licensing information and application forms, visit the FCC online at: www.fcc.gov/wtb/uls or call the FCC hotline at 1-800-418-3676. If you have any questions, you can contact the FCC direct at 1-888-225-5322. No license is required for operation on channels 8-14 or operation on any channel in Canada.
INSTALL THE BATTERY
Your GMR1558-2CK radio uses a supplied NiMH battery pack or 4 AAA alkaline batteries (not included).
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, and remove the cover.
3)Install the NiMH battery pack into the battery compartment. Be certain to follow the instructions written on the label on the battery pack. Installing the battery pack incorrectly will prevent the unit from operating.
4)Replace the battery compartment door.
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 battery in the unit is low, the battery level meter
icon 
flashes. Recharge the NiMH battery pack immediately or, if you are using the alkaline batteries, you must replace the alkaline batteries 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 Uniden accessories specifically designated for this product.
CHARGING THE RADIO
If you use the rechargeable NiMH battery pack, two GMR1558-2CK radios can be charged directly or by using the supplied charging cradle.
Charge by Using the Radio
1)Connect the AC or DC adapter’s plug to the radio’s DC IN 9V jack and plug the other end into an appropriate power source.
2)Charge the battery pack for 16 hours until the battery indicator stop flashing.
Using the Charging Cradle
1)Connect the AC or DC adapter’s plug to the radio’s DC IN 9V jack and plug the other end into an appropriate power source.
2)Set the charging cradle on the desk or tabletop, and place the radio in the charging cradle with the keypad facing forward.
3)Charge the battery pack for 16 hours until the battery indicator stops flashing. Then remove the radio from the charging cradle after completing charging.
Note:
•DC IN 9V Jack of the radio is for charge only. Be sure to install the battery before charging.
•Use only the supplied battery, AC or DC adapter or approved accessories from Uniden.
•Charge time may vary depending on the battery life remaining.
•Do not recharge alkaline batteries. Doing so can create a safety hazard or damage the radio.
•For fastest charging, turn off the radio before charging.
•Battery must be installed for operation, even from external power.
•If battery Power is low, you cannot operate the radio even using external power. Allow the batteries to charge before using. If you try to transmit while power is low, the radio will automatically turn off.
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 
key to turn the radio ON, and increase the speaker volume by pressing the ▲ button. To decrease the volume, press the ▼ button.
2)Press and hold the 
key again to turn the radio OFF.
Adjusting the Sound (Key Beeps)
Your radio emits a beep each time one of the keys (except for the PTT and Power boost button and call key) is pressed. To turn this sound OFF, press and hold the call key while turning ON the radio. Repeat this step to turn the sound ON.
Choosing a Channel
Your radio has 22 channels and 142 Privacy 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 Privacy Code.
To choose a channel:
With the radio in "Normal" operating mode press the chan tone/scan key and press the ▲ or ▼ button to increase or decrease the channel number displayed.
Note: Channels 1-7 have an typical range of up to 15 miles by pressing the Power boost button. Channels 8-14 have an typical range of up to 5 miles. Channels 15-22 have an typical range of up to 15 miles by pressing the Power boost button. You can know which GMRS or FRS channel is active by the icon. hi icon is displayed while scanning GMRS channels, and the lo icon is displayed while scanning FRS channels.
Choosing a Privacy Code
Each of the channels 1-22 may have any one of the codes, OFF or 1-142 selected. Code oF (OFF) indicates no Privacy Code selected and your radio can receive a signal regardless of the code settings of the transmitting radio.
1)Press chan tone/scan in channel select mode. The privacy code indicator will flash.
2)Press the ▲ or ▼ button to increase or decrease the code number displayed. You can
also select oF (OFF) at this stage.
3) Exit the Menu.
Channel Scan Feature
Your GMR1558-2CK radio has a channel scan feature that allows you to easily scan all 22 channels. When an active channel is detected, the radio pauses on that channel until the channel is clear. Then after a 2 second delay, the radio continues scanning. Pressing the PTT and Power boost button while the scan is paused on a channel allows you to transmit on that channel.
To turn ON channel scan:
Press and hold the chan tone/scan key until the scan... icon is displayed. The channel number on the display changes as the radio rapidly cycles through the channels.
To turn OFF channel scan:
Press the call, PTT, Power boost or menu key, or press and hold the chan tone/scan key for 2 seconds.
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 appears 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 have finished speaking, release the PTT button. You can now receive incoming calls.
While receiving, the 
icon appears on the display.
Note: When you press the Power boost button,
boost and 
icon appear on the display. The radio will transmit Maximum power when a GMRS channel is selected. After one minute past when the boost transmission is established, the transmission stops automatically, and you will hear a boost time out error tone.
Warning! The typical range of GMRS channels can be boosted only with NiMH batteries. When the Power boost key is pressed while using alkaline batteries, hi icon appears instead of boost icon and the range is not boosted.
Monitor Mode Feature
Your GMR1558-2CK radio allows you to listen for weak signals on the current channel at the press of a key.
To turn ON the Monitor Mode:
•For brief listening, press mon button. The 
icon blinks.
•Press and hold mon button for 2 seconds untill two beeps sound for continuous listening. The
receiver circuit stays open, letting both the noise and weak signals to be heard.
To turn OFF Monitor Mode:
Press mon button to return to "Normal" mode,
and the 
icon stops blinking and disappears.
Navigating through the Menu
To access the advanced features of the GMR1558- 2CK, your radio has a Menu function.
Normal 
Scramble 
VOX Level 
Call Tone 
Key Lock 
Normal
1)To enter the Menu, press the menu key.
2)Additional presses of the menu key advances you through the Menu until exiting to "Normal" operating mode.
3)Other methods of exiting the Menu function are:
a.Press and hold the 
key again.
b.Press the PTT, Power boost, mon, call or chan tone/scan key.
c.Wait 10 seconds until the unit automatically returns to “Normal” mode.
Setting Scramble
Scramble feature allows you to make a private conversation. No one listening to your conversation can understand what you are talking about. Be sure that your party also sets their radio to the scramble feature.
To set Scramble:
1)Enter the Menu.
2)Select on using ▲ or ▼ button.
Voice Operated Transmission
Your GMR1558-2CK 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. Transmission is initiated by speaking into the remote microphone instead of pushing the PTT and Power boost 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, 1-5) will be indicated. Level oF (OFF) disables VOX, while levels 1-5 set the sensitivity of the VOX circuit.
2)Press either the ▲ or ▼ button 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.
Transmitting a Call Tone
Your GMR1558-2CK radio is equipped with 5 selectable call tones that are 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 (1-5) is indicated.
2)Press the ▲ or ▼ button to increase or decrease the number to the desired call tone. Each tone will be heard through the speaker.
To transmit the selected call tone, press the call key. The selected tone will automatically be transmitted for a fixed length of time. Call Tone will be cancelled when the PTT and Power boost button is pressed.
Key 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 oF (OFF) blinks on the display.
2)To switch the Key Lock mode from oF (OFF) to on, press the ▲ button.
3)To confirm the setting, press the menu key. The radio returns to the "Normal" mode.
Note: If you exit the setting mode before confirming your selection by pressing the menu key, the Key Lock setting will be set to oF (OFF).
To unlock the keypad:
1)Press and hold the 
key to turn the radio OFF.
2)Press and hold the 
key again to turn the radio ON. The keypad is unlocked.
Automatic Power Save Feature
Your GMR1558-2CK 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 automatically turns ON when any key (except the PTT and Power boost button) is pressed. The LCD display illuminates for 10 seconds before turning OFF.
Roger Beep
Roger Beep is a BEEP that is sent to notify the end of transmission (PTT, Power boost and VOX transmission). Roger Beep can be heard through the speaker when both Roger beep and Key Beep are set to ON. When Roger beep is set to ON and Key Beep OFF, Roger Beep will not be heard from the speaker but it will be transmitted to your party. When Roger Beep is set to OFF, Roger Beep neither be herad nor transmitted.
To turn ON Roger Beep:
Press and hold the ▲ button while turning ON the radio.
To turn OFF Roger Beep:
Press and hold the ▲ button while turning ON the radio.
