Audiovox GMRS-1535 User manual

01-02-07 -I-
General Mobile Radio Service
GMRS-1535
lCTCSS Sub Tone
(38 Frequency)
lVOX Operating
lScanning
lMonitor
lWeather Radio Band
(10 Channels)
lWeather Alert
lKey Pad Lock
lBack Light LCD Display
lBattery Status Indicator
lEmergency Channel
lCompact Size
lTime out timer
lChoice of Battery
-Rechargeable Battery
-Standard Alkaline
Instruction Manual

01-02-07 -II -
CONTENTS
1INTRODUCTION.........................................................................................................................1
1) Product Description..............................................................................................................1
2) Package Contents.................................................................................................................1
3) Features................................................................................................................................ 1
4) Front side Overview.............................................................................................................2
5) Rear side Overview................................................................................................................ 3
6) Function and Feature Display ...............................................................................................4
7) GMRS Mode (Function) key sequence ...................................................................................5
8) Weather Mode (Function) key sequence ...............................................................................5
2INSTALLATION...........................................................................................................................5
1) Installation of the batteries..................................................................................................5
2) Antenna................................................................................................................................ 6
3 Basic Operation.......................................................................................................................6
1) On/Off & Volume control......................................................................................................6
2) Selecting the Channel and tone code(CTCSS)......................................................................6
3) Receiving...............................................................................................................................6
4) Monitoring the channel.........................................................................................................7
5) Auto Channel and tone code(CTCSS) Scanning.................................................................... 7
6) Transmitting .........................................................................................................................7
7) Dual Watch Scan Channel and tone code(CTCSS)................................................................ 8
8) VOX (Voice Operated Switching) ...........................................................................................8
9) Emergency Call Ringer Selection Mode ................................................................................ 9
10) Emergency Channel Mode ........................................................................................ 9
11) Keypad Lock .......................................................................................................................9
12) Backlight.............................................................................................................................9
13) Battery status indicator.................................................................................................... 10
14) Beep tone ..................................................................................................................10
15) Time out timer..................................................................................................................10
16) Transmitting Power Selection Mode .................................................................................10
17) Roger Beep tone ...............................................................................................................11
18) Weather Mode...................................................................................................................11
19) Weather Alert.................................................................................................................... 11
20) External DC socket ...........................................................................................................11

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21) External Speaker -Mic......................................................................................................11
4 INFORMATION .......................................................................................................................12
1) Radio..................................................................................................................................12
2) Battery................................................................................................................................ 12
3) Operating temperature .......................................................................................................12
5 SPECIFICATIONS ...................................................................................................................12
1) GENERAL SPECIFICATIONS................................................................................................ 12
2) TRANSMITTER.................................................................................................................... 13
3) RECEIVER...........................................................................................................................13
4) DIMENSIONS......................................................................................................................13
5) BASIC PACKAGE..................................................................................................................13
6) OPTION...............................................................................................................................13
6 MAIN CHANNEL FREQUENCY TABLE (in MHz)......................................................................14
7 WEATHER FREQUENCY TABLE ..............................................................................................14

GMRS-1535 Instruction Manual
01-02-07 -1-
1 INTRODUCTION
1) Product Description
GMRS-1535 General Mobile Radio Service has been designed to enable you to use for general purpose.
This is a sophisticated multi channel, battery powered, 462 MHz FM two-way radio. The controls and
accessories are easy to use and GMRS-1535 can be used correspond to FRS for channel 1 to 7. Also it has
a 38 CTCSS feature to get the clear communication without interference.
And also this radio can be operated the weather band radio.
2) Package Contents
When you open the package, you should have;
lGMRS-1535 Radio Unit
lRechargeable Battery Cell ( AAA x 4)
lWall Charger
lUser’s Manual
3) Features
lCTCSS(38 Frequency)
lChannel Scan and Dual Channel Scan
lVOX(Voice Operated Switching)
lRSSI(Received Signal Strength Indicator)
lCall Signal (5ringer signal)
lBeep ON/OFF
lPSC(Auto Power Saving Control)
lMonitor
lLCD Back lighting
lLow Battery Indicator
lEmergency Call
lKeypad Lock
lTransmitting/Receiving LED
lWeather Indicator
lWeather Band Radio (10CH)
lWeather Alert
lTime Out Timer(3min)

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4) Front side Overview

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5) Rear side Overview

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6) Function and Feature Display
Key lock indicator : Indicates that the key lock function is in use
Beep ON/OFF indicator : Appears while key tone is in use.
Emergency Channel indicator : Appears when emergency channel is in use.
Battery indicator : Indicates the battery status.
Channel readout : Shows the current channel number
CTCSS Channel readout
Channel & CTCSS displaying
CTCSS indicator: Appears when the CTCSS function is in use.
Receive signal indicator
VOX (Voice Activated Transmit) Indicator
Monitor indicator
Scan indicator : Indicates that scan is enabled.
Dual Watch Mode indicator : Appears when dual watch mode is in use.
Tx Power Low indicator
Tx Power Hi indicator
Roger Beep ON/OFF indicator : Appears while roger beep tone is in use
Weather Mode indicator : Appears when weather mode is in use.
Gmrs Mode indicator : Appears when gmrs mode is in use.

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7) GMRS Mode (Function) key sequence
l1'st press –Channel select
l
2’nd press –CTCSS
l3’rd press -- Tx power Hi Low select
l
4'th press –-VOX ON/OFF and sensitivity select
l5'th press –-Dual watch channel select
l
6’th press -- Dual watch ctcss channel select
l7'th press -–Beep ON/OFF
l
8’th press -- Roger beep ON/OFF
l9’th press –Call Ringer type select
l
10’th press -- Time out timer
8) Weather Mode (Function) key sequence
l1'st press –Weather Channel select
l
2’nd press –Weather Alert ON/OFF
l3’rd press -- Beep ON/OFF
2 INSTALLATION
Your GMRS-1535is designed for use with four "AAA" size rechargeable battery (supplied with radio) or
Alkaline Batteries(not supplied).When rechargeable battery cell is installed, please charge the batteries for
at least 12 hours before use.
New rechargeable batteries should be fully charged before use. While rechargeable battery charge, the
radio must be turned off during charging.
Warning Do not use wall charger with Alkaline batteries. The radio will be damaged.
1) Installation of the batteries
lEnsure the On/Off switch on the radio is to set Off position.
l
Hold the radio and battery cover with the back facing you.
lPress down the 'battery cover latch' to release the battery cover.
l
Install four "AAA" size Alkaline batteries or rechargeable batteries.
Note : Carefully observe the polarity of the batteries before installing.
lInstall the battery cover into the radio until the cover latch click into place.

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2) Antenna
The antenna is alternately connected to the radio. It is detachable.
Please do not attempt to transmit without an antenna,
the radio will damage.
3 Basic Operation
1) On/Off & Volume control
lRadio ON : Pushthe power button for 2 seconds.All indicators will appear momentarily on the
LCD.
lRadio Off : Pushthe power button for 2 seconds. All indicators disappear on the LCD.
lVolume setting : Press up[] or down[] button to adjust level that is most comfortable for you.
2) Selecting the Channel and tone code(CTCSS)
GMRS-1535 has a tone code system
l38 CTCSS Code ( indicated by CTC icon on the LCD )
To select the channel
l
Turn the radio on
lPress mode button to enter function mode.
l
Press up[] or down[] button to select a channel.
To set the tone codes(CTCSS)
l
Press mode button 2 times to enter ctcss function mode .
lPress up[] or down[] button to select a ctcss channel.
3) Receiving
The coding feature reduces possibility of interference and provides enhanced communication. You can
only listen to a call containing correct matching code.
Important ;
Before making or listening to a call, always ensure
l
Correct channel is selected and
lCorrect code is set

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4) Monitoring the channel
It is used for listening the weak signal or to here all activities on the channel by manually
overriding channel code setting.
To activate the Monitor feature
lPress and hold the MONbutton for over two seconds.
lWhen you here the sound, releasethe MON button.
To disable the Monitor feature
lPress and hold the MONbutton for over two seconds.
5) Auto Channel and tone code(CTCSS) Scanning
This feature allows you to monitor all channels and tone codes(CTCSS) automatically for valid signal.
While scan, you can transmit and receive. It will return to scan mode when receiving is continued during
7seconds
To activate the Channel Scan
lPress the Scan button
lRadio will begin scanning for all channels.
To disable the Channel Scan
lPress the SCAN button again
lRadio will return to normal operation.
To activate the tone code(CTCSS) Scan
lPress the Scan button
l
Radio will begin scanning for all tone codes(CTCSS).
To disable the tone code(CTCSS) Scan
lPress the SCAN button again
lRadio will return to normal operation.
6) Transmitting
lPress and hold the PTT button (The red LED will be illuminated)
l
Speak slowly and clearly
lTo stop the transmission, release the PTT button
l
The unit will go to the stand-by mode

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7) Dual WatchScan Channel and tone code(CTCSS)
This feature allows you to monitor two special channel when the radio is in scan mode. The assigned
channel will be scanned between channel and channel.
Example : Dual Watch channel is 2 and 5channel. When you are in SCAN mode ,it will be scan as
follows;
CH2-5 -2 -5 -2 ..…
To set theDual WatchScan Channel
lPress the Mode button until the DW Icon blinks on the LCD.
l
Press the up[] button or down [] button to select the Dual Watch channel.
lPress the Power Button to scan your selection.
To set the Dual Watch Scan tone codes(CTCSS)
lPress the Mode button until the DW and ctc Icon blinks on the LCD.
l
Press the up[] button or down [] button to select the Dual Watch tone code(CTCSS).
lPress the Power Button to scan your selection.
To activate the Dual Watch Scan
lPress the Power button
l
Radio will begin scanning for dual watchchannels.
To disable theDual WatchScan
lPress the Mode button
lRadio will return to normal operation.
8) VOX (Voice Operated Switching)
This option enables you to have hands-free conversation. You do not have to operate the PTT button each
time when you want to transmit. When using the external SPK/MIC or EAR/MIC, your have same
function. You can also control the VOX sensitivity tosuit your environment of operation.(E.g. noisy road,
motor bike, factory etc.)
To set the VOX mode and VOX level.
lPress the Mode button until the VOX Icon blinks on the LCD.
lPress the up[] button or down [] button to select the VOX ON/OFF and 5 level.sensitivity.
l
Press the Power Button to confirm your selection.
lVOXicon will be appeared in the LCD.

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9) Emergency Call Ringer Selection Mode
This feature provides 5user selectable call ringer signal. The calling party identify who send a alert signal.
To set your favorite call ringer signal.
lPress the Mode button 9times.
l"CA 1"will appear in the LCD.
lPress the up[] button or down [] button to preview the 5available signal..
lPress the Power button to confirm.
lTo activate the call , click the CALL button.
lYou can here the call sound.
10) Emergency Channel Mode
When you are in emergency situation, you just press the EMGbutton. The radio will be set to emergency
channel (CH10 : 462.6750Mhz) automatically.
To access the Emergency Channel
lPress EMGbutton.
lEMG icon and channel 10 will appear in the LCD.
To disable the Emergency Channel
lPress the Emergency button once.
lThe radio will be return to normal channel.
11) Keypad Lock
The lock function is to avoid the accidental changes to channel with other radio settings. All buttons and
keys will be locked except the mode, call, PTT and monitor button.
To lock the keypad
lPress and hold down the SCAN button for over 2 seconds.
lKeypad is now locked ( icon will appear on the LCD)
To unlock the keypad
lPress and hold down the SCAN button for over 2 seconds.
lKeypad is now unlocked( icon will disappearon the LCD)
12) Backlight
Backlight is used to improve the display visibility in dark condition.
To activate the Backlight
lPress and hold the MONbutton momently.

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To disable the Backlight
lPress and hold the MONbutton momently once again.
13) Battery status indicator
The icon will blink when the radio is in low battery power. Charge the rechargeable battery or
replace the batteries.
lFull battery -three segments are illuminated.
l
Low battery -one segment is illuminated.
The radio will be off if the battery has no power.
14) Beep tone
To activate and disable the beep tone
lPress the Mode button until the bp icon on the LCD.
lPress the up[] button or down [] button to select the beep tone ON/OFF.
l
Press the Power Button to confirm your selection.
15) Time out timer
This feature is to limit the transmitting time to 3 minite.
Sometimes it is necessary or desirable to restrict one-way transmission.
This feature can be useful when particularly trying to conserve battery Power.
When the time is over, automatically change to receive mode.
To activate and disablethe time out timer
lPress the Mode button until the tot icon on the LCD.
l
Press the up[] button or down [] button to select the time out timer ON/OFF.
lPress the Power Button to confirm your selection.
16) Transmitting Power Selection Mode
To set the transmitting power level
l
Press the Mode button until the Hi or Lo appears on the LCD.
lPress the up[] button or down [] button to select the select Transmitting Power level.
l
Press the Power Button to confirm your selection.

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17) Roger Beep tone
To activate and disable the Roger beep tone
lPress the Mode button until the rb icon on the LCD.
lPress the up[] button or down [] button to select the roger beep tone ON/OFF.
lPress the Power Button to confirm your selection.
18) Weather Mode
To activate the Weather Mode
lPress and hold down the MODEbutton for over 2 seconds.
licon will appear on the LCD.
To disable the Weather Mode
lPress and hold down the MODEbutton for over 2 seconds.
lThe radio will be return to normal mode.
19) Weather Alert
To activate and disable the WeatherAlert
lPress the Mode button until the AL icon on the LCD.
lPress the up[] button or down [] button to select the Weather Alert ON/OFF.
lPress the Power Button to confirm your selection.
20) External DC socket
This is to charge the rechargeable battery. Please use the approved and sullied wall charger only. If not,
the radio will damage.
Wall charger specification : output is 8.0 VDC, 70mAh
21) External Speaker -Mic
Use the approved accessories only to have the optimum performance.
lSpeaker/Mic unit
lEar/Mic unit

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4 INFORMATION
1) Radio
lNever operate radio very close or touching to exposed parts of the human body.
l
Do not shock or vibrate the radio to keep the best condition.
lIf possible, remained this radio under the direct ray of light(the sun) or high humid area.
l
Do not operate the radio in explosive atmosphere.
lNever hold the antenna, while transmit , to get the good performance.
2) Battery
l
Alkaline Batteries(4 x AAA size)
lRechargeable Ni-MH battery cell and wall charger are supplied.
l
Charging time ; 10~12 hours
lPlease do not overcharge the battery to conserve the battery lifetime.
l
Never attempt to charge alkaline batteries. This will damage the radio.
lUse approved battery charger only. If not, the radio will damage.
l
Always power off the radio when charging.
lNever use the wall charger simultaneously.
l
Avoid overcharging the rechargeable batteries. Charge battery for less than 15 hours.
lKeep battery contacts clean.
3) Operating temperature
The radio will work correctly under the temperature condition from -20°Cto +60°C.
5 SPECIFICATIONS
1) GENERAL SPECIFICATIONS
lChannel Frequency 462.5625 ~ 462.7250 MHz
lChannel Capacity 15
lFrequency Control PLL synthesize
lFrequency Stability 0.00050%
lChannel Spacing 12.5 KHz
lAmbient temperature -20°Cto +60°C

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lAntenna Fixed 1/4 Wave
l
Power Supply DC 6.0V
lBattery Life 18hr àAL :1.8W(1200mA -5:5:90)
10hr àNi-MH:1.4W(600mA -5:5:90)
2) TRANSMITTER
lRF Output MAX 2 Watts (2W-Al ,1.4W-NiMH)
l
Modulation F3E
lAudio Distortion <5% at 1 KHZ
l
TX current 800mA
lFM Hum & Noise 34dB Min
l
Spurious and Harmonics emission -60 dBc
3) RECEIVER
lSensitivity 12dB SINAD 0.25 ìV
l
20dB Quieting 0.5 V
lSelectivity >-60dB
l
Inter-Modulation -60dB
lSpurious and Image Rejection -65dB
l
Audio output power 300 mW
lFM Hum & Noise -40dB
4) DIMENSIONS
l
98 mm(L) x 53.4mm(W) x 28 mm(D) without antenna
5) BASIC PACKAGE
lRadio
l
Rechargeable Battery cell ( NiMH 4xAAA, 600mAh )
lWall Charger
6) OPTION
l
Speaker / MIC
lEar / MIC
l
Leather Case
lCigarette charger
note : Jack diameter for Ear phone/Speaker-Microphone is 3.5ö -2.5ö.

GMRS-1535 Instruction Manual
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6 MAIN CHANNEL FREQUENCY TABLE (in MHz)
Channel Frequency (MHz) Channel Frequency (MHz)
1462.5625 9462.6250
2462.5875 10 462.6750
3462.6125 11 462.5500
4462.6375 12 462.6000
5462.6625 13 462.6500
6462.6875 14 462.7000
7462.7125 15 462.7250
8462.5750
NOTE : Channels 1 through 7 are shared with FRS radios
7 WEATHER FREQUENCY TABLE
Channel Frequency (MHz) Channel Frequency (MHz)
1162.550 6162.550
2162.400 7162.525
3162.475 8161.650
4162.425 9161.775
5162.450 10 163.275