GMRS540
• 5 | Selectable Call Tone Alerts | • Extended Long Range* |
• 8 | GMRS/14 FRS Channels | • Battery Level Meter |
• Battery Recharge Circuitry | • Backlit LCD Display | |
• Internal VOX Circuitry | • Channel Scan | |
• Channel Monitor | • Keypad Lock | |
• Headset Jack | • Weather Alert | |
•38 CTCSS Codes
•7 NOAA Emergency/Weather Channels
•Optional NiMH Battery Pack and Charger
*Range may vary depending on environmental and/or topographical conditions.
Congratulations on your purchase of the Uniden GMRS540 (General Mobile Radio Service) radio. This product is a lightweight,
OPTIONAL ACCESSORIES
Your package contains the GMRS540 radio, this reference guide, and a product registration card. You will need to purchase 3 AA Alkaline batteries in order to operate the unit.The following optional accessories may be purchased from your participating Uniden dealer or call
•Earset Mic w/ PTT - #HS2468
•Vox Headset Mic - #HSV2469
•NiMH Battery Pack - #BP524
•Drop in Charger - #RC5248
FCC GMRS LICENSE
The GMRS540 radio operates on the General Mobile Radio Service (GMRS) frequencies which require a Federal Communication Commission license to operate. For licensing information and
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 
meter icon will flash and the unit will emit a low battery tone. Replace the batteries immediately or if you are using the optional NiMH battery pack, you must recharge the battery 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.
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) | Rotate the on/off/volume control counter |
| clockwise to turn the unit ON and increase |
| the speaker volume. |
2) | Rotate the on/off/volume control clockwise |
| to decrease the speaker volume and turn |
| the unit OFF. |
Choosing a Channel
Your radio has 8 GMRS/14 FRS 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:
Press the ▲ or ▼ key to increase or decrease the channel number displayed.
Choosing a CTCSS Code
Each of the channels
1)Enter the Menu. Advance through the Menu until the CTCSS code on the LCD is flashing.
2)Press the ▲ or ▼ key to increase or decrease the code number displayed.
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 |
away from the microphone. While you are |
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 Alert Tone
Your GMRS540 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 on the display is shown. The current call tone number
2)Press the ▲ or ▼ keys 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 alert tone, press the call key. The selected tone will automatically be transmitted for a fixed length of time.
Channel Scan Feature
THANK YOU
FOR PURCHASING A UNIDEN PRODUCT
1 | Antenna | 15 | Weather Indicator |
2 | Monitor Button | 16 | Weather Alert |
3 | PTT Button | 17 | Scan Indicator |
4 | Up Key | 18 | Transmit Indicator |
5 | Down Key | 19 | Battery Level Meter |
6 | Select/Lock Key | 20 | Channel Indicator |
7 | Speaker | 21 | Lock Indicator |
8 | On/Off/Volume Control | 22 VOX Indicator | |
9 | Beltclip | 23 | Call Alert |
10 Headset Jack | 24 | Receive Indicator | |
11 WX Key | 25 | CTCSS Code | |
12 Call Key |
|
| |
13Microphone
14Battery Cover
application forms, visit the FCC online at: www.fcc.gov/wtb/uls or call the FCC hotline at
you can contact the FCC direct at
INSTALL THE BATTERIES
Your GMRS540 radio uses 3 AA Alkaline batteries for power. We recommend using high quality alkaline batteries.
To install the batteries:
1)Make sure your radio is OFF.
2)Remove the battery compartment door by pressing the tab at the bottom of the door allowing the door to be removed.
3)Install 3 AA 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 unit from operating.
4)Optional: Your GMRS540 radio can be powered using an optional NiMH battery pack specifically designed for this model. Remove the alkaline batteries and install the battery pack by inserting it into the battery compartment. Follow the instructions found with the NiMH accessory.
5)Replace the battery compartment door by pressing the tab and snapping it into place.
Adjusting the Sound (Key Beeps)
Your GMRS540 radio emits a beep each time one of the keys are pressed or a Call Tone is generated. To turn this sound OFF, press select/lock while turning on the radio. Repeat this step to turn the sound ON.
Navigating through the Menu
To access the advanced features of the GMRS540, your radio has a Menu function.
1)To enter the Menu, press the select/lock key.
2)Additional presses of the select/lock key will advance you through the Menu until exiting to "normal" operating mode.
3)Other methods of exiting the menu function are:
a.Press PTT (Press To Talk).
b.Wait 10 seconds until the unit automatically returns to "normal" mode.
transmitting the transmit icon TX will be |
shown 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 receive icon RX |
will be shown on the display. |
Voice Operated Transmission
Your GMRS540 radio is equipped with a user selectable Voice Operated Transmitter (VOX) which is enabled when the special headset is inserted and can be adjusted through the Menu. The VOX feature is designed to be used with a headset with a microphone, but no remote PTT switch. Transmission is initiated by speaking into the remote microphone instead of pushing the PTT button.
To select a VOX level:
1)Enter the Menu. Advance through the Menu until the VOX icon is displayed. The current level
2)Press the ▲ or ▼ keys to the desired VOX sensitivity level. Use level 1 for increased
Your GMRS540 radio has a channel scan feature that allows you to easily scan all 22 channels. When an active channel is detected, the unit will pause on that channel until the channel is clear. Then after a 4 second delay, the unit 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 ▲ or ▼ key until the SCAN icon on the display is shown. The channel number on the display will rapidly cycle through the channels.
To turn OFF channel scanning:
Press and release either the ▲ or ▼ key.
Keypad Lock
To Lock the keypad, press and hold the select/lock key until the 
icon is displayed. To remove the keypad Lock, press and hold the select/lock key until the Lock icon disappears.
Auto Squelch Feature
The GMRS540 radio is equipped with an automatic squelch system which shuts off weak transmissions and unwanted noise due to terrain conditions or if you have reached