Audiovox GMRS122-2CH - 5 Mile GMRS Radio User manual

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General Mobile Radio Service (GMRS)
Model : GMRS122-2CH
Draft :
Owner's Manual
1-800-290-6650
DRAFT
1-15-03(by TTI).

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NEVERATTEMPTTOCHARGEALKALINEORDRYCELLBATTER-
IES, AS BATTERIES MAY BURST CAUSING PERSONAL INJURY
ANDDAMAGETOTHEPRODUCT. WHEN RECHARGING NICKEL
METAL HYDRIDE (Ni-MH) BATTERIES WITH THE AUDIOVOX
CHARGER, USE ONLY AUDIOVOX APPROVED RECHARGE-
ABLE BATTERIES. USE OF THE AUDIOVOX CHARGER WITH
OTHER BRANDS OF BATTERIES IS NOT RECOMMENDED, AS
BATTERY CHARGING TIMES WILL VARY WITH
DIFFERENT BRANDS. REFER TO THE MANUFACTURER’S
INSTRUCTIONSFORCHARGINGOTHERBRANDSOFBATTERIES.
AVOID PLACING THE GMRS-3000PK RADIO TRANSCEIVER
FOR PROLONGED PERIODS OF TIME IN DIRECT SUNLIGHT
OR TEMPERATURES BELOW-4° F (-20° C) OR ABOVE 140 °F
(60°C).
KEEP THE ANTENNA AT 1 INCH (2.5 cm) AWAY FROM YOUR
HEAD AND BODY. DO NOT USE YOUR GMRS122-2CH RADIO
TRANSCEIVERWITHADAMAGED ANTENNA.
PLACETHE RUBBER COVERON JACKS WHEN NOT INUSE.
GMRSLICENSE:
USEOFTHISRADIOWITHINTHEUNITEDSTATESREQUIRESAN
FCC GMRS LICENSE. AN INDIVIDUAL18 YEARS OF AGE OR
OLDER, WHO IS NOT A REPRESENTATAIVE OF A FOREIGN
GOVERNMENT, IS ELIGIBLE TO APPLY FOR A GMRS SYSTEM
LICENSE. YOU WILL NEED TWO FORMS FROM THE FCC; FCC
FORM 159 AND FCC FORM 605 MAIN FORM AND SCHEDULE F.
YOUCANFIND THE FORMS ONLINEAT:HTTP://WWW.FCC.GOV/
FORMPAGE.HTML,ORCALL1-800-418-3676.
CAUTIONS
2

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1. BatteryCover
2. Monitor/FunctionConfirmation
Button
3. DetachableCarryClip
4. Push-To-Talk(PTT)and Func-
tionConfirmationButton
5. Antenna
6. ExternalSpeaker(SP.)/Micro-
phone(MIC)Jacks
7. Built-inSpeaker
8. LiquidCrystal Display (LCD)
9. Built-inMicrophone
Model GMRS122-2CH (FCC License Required)
10. UpChannel/Volume Button
11. DownChannel/Volume
Button
12. MODEButton
13. Power(PWR)On/Off&
SCANButton
14. BatteryChargingContacts
14
3
5
4
1
2
913
11
8
10
12
7
3
(REF)
1
(REF)
6

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Model GMRS 122-2CH DISPLAY
4
1. RogerBeep Tone On/Off Indicator:
2.
3. Monitor Indicator: Icon appears when the Monitor (M) button is
pressed and the channel monitor function is activated.Icon appears
also when a signal is being received.
The icon also represents transmit signal power during
4. Large Segment Display: Indicatesthe channel number in use.
5. Scan Indicator: Thisfunction allows theuser to scana channel and/or a
tonecode every .5 second to search for a validsignal.
6. Battery Level Indicator: Icon indicates when the battery is low level.
7. Hi/LO Indicators: Appropriate icon appears when the transmit power
is set to desired output power.
7
8
6
5
4
3
2
1
9
Roger Beep tone is on, and disappears when tone is not in use.
Transmit Indicator:
transmission.
This icon appears when the
8. Small Segment Display:
Displays the CTCSS tone option in the
channel from (00-38).
9. Voice Activated Transmission (VOX) Indicator:
This function allows
hands free conversation. The icon appears when the VOX mode is
activated.

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Equipment and Accessories Supplied
1. Radio (2) GMRS122-2CH
2. Owner’s Manual (1) 128-xxxx
3. Batteries (8) Rechargeable NiMH
4. Dual Desk-Top Charger DTC122-2CH
5. AC Wall Adapter UD-1201B
Powering the transceiver:
Your GMRS122-2CH radio transceiver operates on four AAA batteries.
Alkaline batteries will provide slightly better performance than rechargeable
batteries. Only the supplied Audiovox-approved rechargeable batteries
can be recharged in the radio transceiver using the suppiled desk-top
charger and associated wall adapter. This will ensure optimum
performance for the GMRS122-2CH. Battery charging time is typically
10-12 hours. Use of the Audiovox charger with other brands of batteries is
not recommended as battery charging times will vary. Refer to the
manufacturer’s instructions for charging other brands of batteries.
Batteries
There are three methods of powering the GMRS122-2CH:
1.Alkaline Batteries.
WARNING: Do not attempt to recharge Alkaline batteries.
2.Audiovox Rechargeable Ni-MH Batteries - (Rechargeable Ni-MH
batteries, Wall Adapter and Charging Stand included).

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2. Slide the cover
down and then lift
cover at bottom to
open.Remove
cover.
3. Insert four AAA batteries
(positive (+) end toward
the top begining at left
side and alternating
positive terminals as
shown).
1. Using thumb,
press down on
battery cover at
arrow and slide
cover down to
open.
Use only Audiovox-approved rechargeable batteries and charger
when charging batteries internal to the unit.
NOTE: To extend battery life, avoid overcharging the batteries.
3. Various Brands of Rechargeable Batteries - Use of the
Audiovox charger with other brands of rechargeable batteries is not
recommended, as battery charging times will vary with different
brands of batteries.Refer to the manufacturer’s instructions for
charging other brands of batteries.
Installing the batteries:
Batteryinstallation is made more convenient whenthe carry clipis removed.
To do this, release the spring clip securing the belt clip to radio and slide
the belt clip upward and away from the radio body. Next, press down with
the thumb at the embossed arrow, slide the battery cover down and lift off
thebattery cover.Insertfour AAAbatteries (alternatepositive ends(+) toward
the top of the transceiver, starting left-to-right.
RELEASE
BUTTON
CLIP
BATTERY
COVER
BELT
CLIP
COVER
ARROW
POSITIVE
TERMINALS
CLIP + +
+ +

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The following guidelines will improve performance and provide longer
operating times for the GMRS122-2CH:
1. Do not mix old and new batteries.
2. The use of alkaline-type batteries is recommended to provide the
longest operating time.
3. Do not mix alkaline, standard (carbon-zinc) or rechargeable
batteries.
4. If the unit is not to be used for an extended period of time, remove the
batteries. Old or leaking batteries can cause damage to the unit and
will void the warranty.
AC WALL
ADAPTER/
CHARGING
TRANSFORMER
MODEL:UD-1201B
INPUT : 110VAC
OUTPUT : DC12V
DESKTOP CHARGING STAND
PARTNUMBERDTC122-2CH
CHARGING STAND
PWR JACK
ADAPTER
POWER
PLUG
GMRS RADIO
CHARGING
COMPARTMENTS(2)
PWR
CHARGING
COMPARTMENT
LEDs:
RED---CHARGING
+
-

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NOTE:
To differentiate between operating modes, look for HI or LO indication
Refer to the appropriate section of this manual for detailed operating
instructions for each mode.When in standby mode,the transmit/receive
indicator will flash once every 5 seconds as the unit is in the
power-save mode.
GMRS122-2CH OPERATIONAL MODES
GMRS/FRS
BAND
ROGER
BEEP
POWER
SELECT
CTCSS
SELECT
CHANNEL
SELECT
below the battery power level indicator when in GMRS mode.

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Controls:
Power On/Off (13) Button
Press and hold the power on/off button (PWR
) for at least 2 seconds. You will
hear a confirming melody to indicate the unit is on. To turn the unit off, press
andhold the button for at least 2 seconds.
Adjustingthe Volume
With the unit powered on, press the Up Channel/Volume button ( ) to
increase volume and the Down Channel/Volume button ( ) to decrease
volume. The display will indicate the current volume level by the small
number in the icon (UL0 - 7
).
Monitor/Display Backlight Button (2)
This button is used to to check activity on the current frequency before
transmitting. Check activity by pressing the Monitor (M) Button longer
than 2 seconds;the BUSY icon will apppear on the display and you will
hearstatic if frequency isclear.
Do not transmit if you hear conversation.
Hold down the Monitor Button again longer than 2 seconds and the
icon will disapppear from the display.
The monitor function will temporarily bypass the squelch setting and play
all signals on a given channel. This feature is useful when communicating
with other parties at extreme range.
By pressing the monitor button momentarily, the LCD backlight is turned
on; the LCD backlight will turn off automatically in about 5 seconds, or
when the monitor button is pressed momentarily once again.
Push To Talk (PTT) Button (4)
Pressing and holding this button will allow you to speak to any transceiver
that is set to the same channel and privacy code setting as yours. Hold the
transceiver approximately 1 to 2 inches from your face as you speak into
the built in microphone (9). After you have finished speaking, release the
PTT Button to allow reception of incoming signals. It is not possible to

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transmit and receive at the same time.
While the PTT Button is
pressed and the TX indicator on the LCD will be display.
Releasing the button allows the unit to revert to standby mode. When
receiving an incoming signal,
The PTT Button can also be used as a two-way call ringer. Pressing the
buttontwicequickly willcall anotherpartyon thesame channel. TheTransmit
icon on the LCD will displayed for 3 seconds and then go out.
Up Channel/Volume Button (10)
In the standby mode, pressing this button will increment the listening
volume. When in function edit mode this button will be used to adjust the
unit's settings.
Down Channel/Volume Button (11)
In the standby mode, pressing this button will decrement the listening
volume. When in function edit mode this button will be used to adjust the
unit's settings.
MODE Button (12)
Thisbutton is usedto select variousfeature settings in the GMRS and FRS.

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External Speaker (SPK) / Microphone (MIC) Jacks (6)
This set of jacks accepts an Audiovox headset/microphone connector.
Scan Button (13)
Press this Button momentarily to enable or disable the scan mode.
Operating Modes and Features
GRMS/FRS Operation
- From GMRS/FRS standby mode, press and hold the (PWR) button
for 2 seconds to turn on power.
- Press the MODE button so the Channel number flashes.
- Select the desired channel with the Up (10) and Down (11) Buttons.
When receiving a call, the BUSY icon on the LCD appears to indicate
incoming received signal
- Press and hold the PTT button (4) to transmit, then speak into the
microphone clearly and slowly.
- Release PTT Button (4) to receive.
- Communication can only be accomplished when the channel and
CTCSS tone frequency of at least two parties are the same.

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Channel Selection
In order to communicate with other GMRS/FRS units, both transmitting
and receiving party must be on the same frequency.
The GMRS122-2CH has 22 channels (frequencies) (1-22) indicated by
the large digits on the LCD display panel. Channels 1 through 7 are
the shared GMRS/FRS channels. Channels 8-14 are FRS only chan-
nels,while channels 15-22 are assigned GMRS only channels.If a FRS
only channel(8-14) has been selected, the HI or LO icon will not be
displayed on the LCD panel; otherwise,for channels 1-7(GMRS/FRS)
and 15-22(GMRS only), the HI or LO icon will be displayed.
Communication with Audiovox GMRS/FRS and compatible units is possible
on these 22 channels. Before transmitting on the selected channel, press
the Monitor (M) Button(2) to check the activity on that channel. If there
is activity on the selected channel,change to another channel that is clear.
To change the channel,
- From GMRS/FRS standby mode, press the MODE button (12)
until the channel number flashes.
- Press the Up Button (10) briefly to move to the next higher main
channel number.
- Press the Down Button (11) briefly to move to the next lower main
channel number.
CTCSS Mode (Sub-Channel) Selection
Coded Tone Controlled Squelch System (CTCSS) with 38 Sub-Frequencies.
This feature allows you to utilize the coded squelch tones (01–38) within a
main channel. This enables you to communicate with another party on the
same main channel using the same subcode. (This filters out unwanted
transmissions without the same coded squelch tone). There are 38 CTCSS
Sub-channels for each main channel. A different subcode may be
selected for each of the 22 channels.

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- Press the Up or Down button to select the desired sub-channel
for use (1-38).
- Press the PTT or Power On/Off button to confirm selection.
The CTCSS mode can be turned off by selecting the oF icon as the setting.
NOTE: To communicate with other GMRS/FRS units, they must be switched
to the same channel and CTCSS subcode. To communicate with
other GMRS/FRS units that do not have subcodes, switch your unit
to the same channel with the subcode set to oF
.
The CTCSS subcodes do not prevent others from hearing your
transmission. This will only allow you to ignore all traffic on a
given channel not using the same subcode.
VOX Selection Mode
This option enables you to have hands-free conversation. Your voice or
nearby sound is detected and the radio transmits without the need to
press the PTT button.
To set radio for VOX operation,
- From GMRS/FRS standby mode, press and hold the MODE button until
VOX
the icon display on the LCD.
VOX can be turned off by pressing the MODE button for 3 seconds.
- From GMRS/FRS standby mode, press the MODE twice;
a flashing oF or sub-channel number is displayed.
To change the CTCSS Sub-channel,

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Channel Scan Operation
This feature allows you to monitor all channels automatically for valid
signals. While scanning, you can transmit and receive. When a signal is
received, the scan is interrupted and will return to scan mode 5 seconds
after reception is terminated.
NOTE:
While the scan function is active,the MODE button will be inoperative.The
scan mode will reduce the overall battery life due to the battery save
function is overridden.
To enable the channel scan mode,
- From GMRS/FRS standby mode,momentarily press the power Button;
(SCAN) will appear on the LCD display.
- The radio will display each channel (1-22) in order as the scan mode
operates to find an active main channel.
- When unit doesn't find any signals and you want to transmit, press
the PTT switch to return to home channel operation. The transceiver
will automatically resume scanning approximately 5 seconds after
the communication is completed.
- If there is no activity and you want to leave the scan mode, press the
power button momentarily and the unit will return to normal operation;
(SCAN) icon will disappear from the LCD display.
Key Tone
This feature allows the transceiver to sound a confirmation tone whenever
thefollowing keysare pressed: Monitor(M) Button,Up/DownButton, MODE
Button, SCAN Button.The key tone is always on,not available to OFF.

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Transmit Power Selection Mode
This feature permits selection of the transmitting power level to high
or low. Using low power the unit will have a lower transmit range but
battery life will be increased.
To access the transmitter power selection function:
- From GMRS standby mode, press the Function Button until thePo icon
appears with a flashing HI or Lo indication on the display.
- Press the Up or Down button to toggle between the High and Low se-
lections.
- Press the PTT or Power On/Off button to confirm selection.
The display will indicate the current setting in standby mode.
Roger Beep Tone
The Roger Beep is a tone which is automatically transmitted whenever the
PTT button is released. This tone alerts the receiving party that the trans-
mission has been terminated intentionally.
To enable and disable the Roger Beep tone:
- From GMRS/FRS standby mode, press the Function Button until rb
appears on the display with the flashing Roger Beep icon ( ) and
OnoroF.
- Press the Up or Down Button to select the tone on or off as desired.
- When enabled, the tone icon ( ) appears steady on the display.
- Press the PTT or Power On/Off button to confirm selection.
Battery Alert
When the battery icon ( ) blinks on the LCD panel, recharge unit or
install fresh batteries.

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NOTESFOR GOOD COMMUNICATION
1 . The GMRS122-2CH 22 channels are shared on a ‘take turns’ basis.
This means other groups may be talking on any of the channels.
A common code of ethics/courtesy is to switch to another vacant
channel and not to attempt to talk over someone who is already using
the channel you first selected.
2. The GMRS122-2CH has been designed to maximize performance
and improve transmission range in the field. To avoid interference,
it is recommended that you do not use the units closer than 5 feet
apart.
3. For best transmission results, always keep your mouth about 2-3
inches from the microphone (9) and speak slowly in a normal voice.
4. To increase battery life, avoid features such as Scan, Dual Watch.
These features will reduce operating time considerably.
Warning
•Do not operate the transceiver unless you are licensed to do so.
•Remove the batteries from the transceiver if it is not expected to be used
for long periods. This will eliminate the possibility of chemicals leaking
from the batteries and corroding the transceiver.
•Avoid exposing the transceiver to water or extremes of temperature.
•Do not use this device in or near a mining facility, which uses remotely
triggered explosives or in areas labeled “Blasting Area”. Premature or
accidental detonation may result.
•Do not attempt to modify or in any way increase the output of this
transceiver. Its output is designed to meet the legal limits set by the FCC.
•Do not use this device or change its batteries in potentially explosive
atmospheres as sparks in such areas could result in an explosion.
•Turn your transceiver off wherever posted notices restrict the use of radios
or cellular telephones. Facilities such as hospitals may use equipment
that is sensitive to RF energy. 16
•
•
•
•
•
•

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Troubleshooting
17
Weak or no Weak batteries Charge or replace batteries
signal received Channel and privacy Adjust the transceiver’s
code not set the same settings to match those
as target transceiver settings of the target
transceiver
Volume leveltoolow Increasevolumelevel
PTT Button inadvertently ReleasePTTButton
depressed
Excessive radio interference Change to a different
on a particular channel channel
Obstruction of radio signal Avoid operating in or near
large buildings or vehicles
Unit beeps, but Batteries extremely Charge or replace batteries
will not function discharged
when turned on
Reception of CTCSS privacy mode Turn on the CTCSS privacy
unwanted signals not on mode and set code number to
match the setting of the
target transceiver.
Interference from Turn the devices off or move
electronic devices such farther away from them.
as computers or TVs
Problem Possible cause Correction
No transmission Weak batteries Charge or replace batteries
while pressing Incorrect battery polarity Install the batteries
thePTTButton following the directions in
paragraph Installing the
Batteries.
•Turn your transceiver off on board aircraft when requested to do so.
•Do not place your radio in front of a vehicle’s air-bag. If the air-bag
deploys, it could propel the transceiver like a projectile causing bodily
injury.

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General
Frequency Range:
Channels 1 through 7 are
shared with FRS radios. Referto frequencychart on nextpage.
Channels 8 through 14 are
FRS only. Refer to frequencychart onnext page.
Channels 15 through 22 are
GMRS only. Refertofrequency charton nextpage.
Channel Spacing 12.5kHz
Privacy Codes 38 for each main channel
Dimensions (W x H x D) 1.89 W x 3.6 H x 1.12 D
(Without Antenna) (48.0 mm x 93 mm x 28.6 mm)
PowerSupply
Power Source Alkaline Batteries, AAA (4), 6 VDC
Ni-MH rechargeable, AAA (4),
4.8 VDC, 650 mAh
Operating Time 30 hours Low Power
(Transmit: Receive: Standby) 14 hours High Power
(5: 5: 90 ratio)
(Based on alkaline batteries)
Receiver
Useable Sensitivity >-119 dBm
Maximum Audio Output Power > 0.3 Watt maximum (8 Ohm )
Modulation Distortion < 5% (1 kHz 70%)
Transmitter
RF Output Power 1.8 Watts maximum (high power)
0.5 Watt maximum (low power)
Maximum Deviation +/- 2.5 kHz
Modulation Distortion < 5% (1 kHz 70%)
18
TechnicalSpecifications;

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CHANNEL/TYPE FREQ(MHz)/PWR CHANNEL/TYPE FREQ(MHz)/PWR
1 GMRS/FRS 462.5625 / 2W-0.5W 12 FRS 467.6625 / 0.5W
2 GMRS/FRS 462.5875 / 2W-0.5W 13 FRS 467.6875 / 0.5W
3 GMRS/FRS 462.6125 / 2W-0.5W 14 FRS 467.7125 / 0.5W
4 GMRS/FRS 462.6375 / 2W-0.5W
5 GMRS/FRS 462.6625 / 2W-0.5W
6 GMRS/FRS 462.6875 / 2W-0.5W
7 GMRS/FRS 462.7125 / 2W-0.5W
8 FRS 467.5625 / 0.5W
9 FRS 467.5875 / 0.5W
10 FRS 467.6125 / 0.5W
11 FRS
467.6375 / 0.5W
15 GMRS 462.5500 / 2W-0.5W
16 GMRS 462.5750 / 2W-0.5W
17 GMRS 462.6000 / 2W-0.5W
18 GMRS 462.6250 / 2W-0.5W
19 GMRS 462.6500 / 2W-0.5W
20 GMRS 462.6750 / 2W-0.5W
21 GMRS 462.7000 / 2W-0.5W
22 GMRS 462.7250 / 2W-0.5W
This transceiver complies with FCC regulations for use in the United
States of America. Use in other countries may be prohibited or restricted
by local regulation.Please check with the local regulating agency before
using this device outside the United States of America.
Main Channel Frequencies :
NOTE :Channels 1 through 7 are shared with FRS radios.
Channels 8 through 14 are FRS only.
Channels 15 throuhg 22 are GMRS only.

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Continuous Tone Coded Squelch System Tone
Frequencies (in Hz)
CTCSS Freq. Hz CTCSS Freq. Hz
1 67.0 20 131.8
2 71.9 21 136.5
3 74.4 22 141.3
4 77.0 23 146.2
5 79.7 24 151.4
6 82.5 25 156.7
7 85.4 26 162.2
8 88.5 27 167.9
9 91.5 28 173.8
10 94.8 29 179.9
11 97.4 30 186.2
12 100.0 31 192.8
13 103.5 32 203.5
14 107.2 33 210.7
15 110.9 34 218.1
16 114.8 35 225.7
17 118.8 36 233.6
18 123.0 37 241.8
19 127.3 38 250.3
*oF =No Tone
20