GME TX670 User manual

2 watt handheld UHF CB radio
INSTRUCTION MANUAL

PA G E 2 I N S T R U C T I O N M A N UA L T X 6 7 0 T X 6 7 0 I N S T R U C T I O N M A N UA L PA G E 3
The TX670 is a radio transmitting device.
 •Whentransmitting,keeptheantennamorethan25mmfrom
anypartoftheheadorbody.
 •Donottransmitnearelectricalblastingequipmentorin
explosiveatmospheres.
 •Donotallowchildrentooperatearadiotransmitterunsupervised.
CONTENT S
WARNING - SA FE T Y INFORMATION
IMPORTANT
ACCESSORIES
SUPPLIED
•TX6702/1wattUHF
handheldradiowithexible
antenna
•3.6VNi-MHrechargable
batterypack
•240VACadapter
•Instructionmanual
OPTIONAL
•Speakermicrophone
•Hands-freeearmicrophone
•Necklanyard
•Vehiclecigarettelighter
tricklecharger
•Leathercase
READ ALL INSTRUCTIONScarefullyandcompletelybefore
operatingyourradioandretainthismanualforfuturereference.
NEVERconnecttheradiotoapowersourceotherthanthe
suppliedbattery.Thismaydamageyourproduct.
DO NOTplaceyourradioinfrontofavehicleairbag.
DO NOTuseyourradiowithadamagedantenna.
DO NOT attempttomodifyyourradioinanyway.
ALWAYS chargeyourradioatnormalroomtemperature.
ALWAYSswitchoffyourradiowherenoticesrestricttheuse
oftwo-wayradioormobiletelephones.
ONLYuseGMEapprovedrechargeablebatterieswiththe
suppliedcharger.
AVOID exposingyourradiotowater.Itisnotwaterproof.
AVOIDstoringorchargingyourradioindirectsunlight.
AVOIDstoringorusingyourradiowheretemperatures
arebelow-20°Corabove+60°C.
IMPORTANT INFORMATION
CONCERNING UHF CB RADIO
 TheuseoftheCitizenBandradioserviceislicensedinAustraliaby
theACMARadiocommunications(CitizensBandRadioStations)
ClassLicenceandinNewZealandbytheMinistryofEconomic
DevelopmentNewZealand(MED).AGeneralUserRadioLicence
forCitizensBandradioandoperationissubjecttoconditions
containedinthoselicences.
 TheclasslicenceforusersandequipmentoperatingintheCB/PRS
477MHzbandhasbeenamended.Thisradiomeetsthenew80
channelstandard.
Insimpletermsthesameamountofspectrumisavailable;however,
radiotransceiverscannowoperateinanarrowerbandwidthand
henceuselessspectrum.Theseradiosaregenerallyreferredtoas
narrowbandor12.5kHzradios.Byusing12.5kHzchannelspacing
insteadof25kHz,the40channelsoriginallyallocatedcannowbe
IMPORTANTINFORMATION.........2
 PossibleIssues ........................4
TELEMETRYCHANNELS...............5
FEATURES...................................5
RADIOCONTROLS.......................6
 LCDDisplay ...........................7
POWERINGTHERADIO ...............8
GENERAL OPERATION...............10
 PowerOn/Off........................10
 AdjustingtheVolume ............10
 DisplayLighting ....................10
 ReceivingSignals ..................10
Transmitting..........................10
 Duplex/MonitorKey...............10
 Scan/MemoryKey.................13
 Mode/Key-LockFunction .......14
 1.CTCSSCodeSelection .......15
 2.TransmitterPower..............16
 3.VOXSettings.....................16
 4.DualWatchSettings ..........17
 5.SquelchSettings................18
 6.RogerBeepToneSettings..18
 7.ButtonBeepToneSetting ..18
 8.CallAlarmSelection .........19
UHFCBOPERATING
FREQUENCIES...........................20
CTCSSTONEFREQUENCIES.......22
SPECIFICATIONS .......................23
GMECONTRACTWARRANTY
AGAINSTDEFECTS ....................24

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TElEMETRY CHANNElS
ACMAregulationshaveallocatedchannels22and23fortelemetry
onlyapplicationsandhaveprohibitedthetransmissionofspeech
onthesechannels.ConsequentlytheTX670hasatransmit-inhibit
appliedtochannels22and23.
Intheeventthatadditionaltelemetry/telecommandchannelsare
approvedbytheACMA,thesechannelsshallbeaddedtothose
currentlylistedwherevoicetransmissionisinhibited.Currently
transmissionsonchannels61,62and63arealsoinhibitedand
thesechannelsarereservedforfutureallocation.
FEATURES
•Microprocessor Controlled Frequency Synthesiser:Allows
userprogrammablecontrolofscanning,channelmemoriesand
selectedfeatureoptions.
•
Programmable Scan Function:Scansupto80UHF
CBchannels.
•In-built CTCSS:UserselectableContinuousToneCoded
Squelchsystemforquietchanneloperation.
•2 watts/1 watt RF Power: Whentransmittingincloserange
youcanconservebatterypowerbyusingtheLowPowersetting.
•Individually Programmable Duplex Function: User
selectableforthoseindividualrepeaterchannelsinyourarea.
•Power-Save Feature: Sleepsduringperiodsofinactivity.
•Keypad Lock: Preventsaccidentalbuttonpresses.
•Backlit LCD: Fornightviewing.
•Calling Tone/Roger Beep: Alertsyoutoincomingcalls.
•Dual Watch: Monitorstwochannelssimultaneously.
•VOX: Voiceactivatedtransmitforhandsfreeoperation.
expandedto80channelstherebydoublingthechannelcapacity
andrelievingcongestionintheUHFCB/PRSband.
Original40channelwidebandRadioswillcontinuetooperateonthe
original40channels,howevertheywillnotbeabletoconverseonthe
newerchannels41–80.Thenewernarrowbandradioswillbeable
toconversewithallolder40channelwidebandradiosonallchannels
1to40aswellasthenewerchannelsallocatedfrom41to80.
 Themixingofnarrowbandandwidebandradiosinthesame
spectrumcancausesomepossibleoperatingissuesofinterference
andvaryinglevelsofreceivedvolume.
POSSIBLE ISSUES
Whenanewnarrowbandradioreceivesatransmissionfromanolder
widebandradiothespeechmaysoundloudanddistorted–simply
adjustyourradiovolumeforbestperformance.
Whenanolderwidebandradioreceivesasignalfromanew
narrowbandradio,thespeechmaysoundquiet-simplyadjustyour
radiovolumeforbestperformance.
Dependingonhowcloseyourreceivingradioistoanother
transmittingradio,therecanbeinterferencefromthetransmitting
radioifitisusingachanneladjacenttothechannelyouarelistening
to.Simplytrygoingupordownafewchannelsfromthecurrently
selectedchannel.
Theabovesituationsarenotafaultoftheradiobutasymptomof
operatingwidebandandnarrowbandradiosinthesamebandwidth.
Thispossibleinterferencewilldecreaseovertimeasthepopulationof
widebandradiosagesanddecreases.
FurtherinformationandupdatesareavailablefromtheAustralian
CommunicationsandMediaAuthority(ACMA)atwww.acma.
gov.auandtheMinistryofEconomicDevelopment(MED),Radio
SpectrumManagementatwww.rsm.govt.nz
TheACMAhasallocatedchannels5/35foremergencyuseonly.
Channel5istheprimarySimplexEmergencyChannel.Wherea
Channel5repeaterisavailable,youshouldselectDuplexonCH5.
NOTE: Channel35istheinputchannelfortheChannel5repeater
thereforeChannel35shouldalsonotbeusedforanythingotherthan
emergency transmissions.

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RADIO CONTROlS LCD DISPLAY
Push-to-
talk(PTT)
Duplex/
Monitor
Battery/
Compartment
Belt
Clip
1 Receiver Busy Icon:
Appearswhenreceiving.
2
Transmit Icon:Appears
whentransmitting.
3
Memory Icon:Appears
whentheselectedchannel
is stored in the Scan
memory.
4 
Scan Indicator Icon:
AppearswhenSCANis
enabledandtheradiois
scanning.
5 
Button Beep Tone Icon:
Appearswhenthebutton
beepconrmationtoneis
selected.
6
Roger-Beep Tone Icon:
AppearswhentheRoger-
Beeptoneisenabled.
7
Battery Level Icon:
Indicatesbatterycharge
level.Flasheswhenbattery
isalmostempty.
8 
Dual Watch Icon:Appears
whenDualWatchmodeis
active.
9 High Power Icon:Appears
whenHightransmitter
powerisselected.
10
Duplex Icon: Indicates that
Duplexcommunicationhas
beenenabled.
11
Key-Lock Icon:Appears
whenthekeypadislocked.
12
Monitor Icon:Appears
whenMonitorfunctionis
activated.
13
Power Save Icon:Appears
whentheradioisinthe
powersavemode.
14
Voice Activated
Transmission (VOX) Icon:
AppearswhentheVOX
mode is activated.
15
CTCSS Tone:Displaysthe
selectedCTCSStone
(from00–38)onthe
selectedchannel.
16Channel Display: Indicates
thechannelnumberinuse.
12 3 4 5 6 7
8
10
11
1213141516
9
LCD
External
Speaker
Mic
Mic
LED
Antenna
Speaker
Mode/
LockKey
Scan/
Memory
Volume
On/Off
Channel
Up
Channel
Down
Duplex/
Monitor

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PAGE8I N S T R U C T I O N M A N U A L T X 6 7 0
POWERING THE R AD IO
YourTX670ispoweredbyaNi-MHrechargeablebatterypack.
Ifleftunused,thebatterieswilldischargewithinafewmonths.
IfyouhavenotusedyourTX670forsometime,youwillneedto
rechargeyourbatterypackbeforeuse.
Installing the Batteries
Batteryinstallationismoreconvenientwhenthebeltclipis
removed.Todothis,releasethespringclipandslidethebelt
clipdownwardandawayfromtheradiobody.
1.Pressthecentre-topareaofthebatterycoverand
 slidedownwards.
2.Installtherechargeablebatterypackinthedirection 
indicatedonthepackuntilit‘clicks’intoplace.
3. Replacethebatterycoverandbeltclip.
Charging the Batteries
YourTX670issuppliedwithanACadapterwhichwillrecharge
afullydischargedbatterypacktofullcapacityinaround15-16
hours.
1.Plugthechargerintoastandard240voltACoutlet.
2.Connectthechargertomic/chargesocketontheradio.
Battery Low Alert
Whenthebatteryiconblinksonthedisplay,thebatterylevel
islowandthebatteriesshouldberechargedorreplaced.Ifthe
batteriesarenotcharged,anaudiotonewillthensoundtowarn
theuserthatthebatteriesarealmostdischarged.
Battery Usage
Thetimetakentodischargethebatterieswilldependonhow
youusetheTX670.The1500mAhbatterypacksuppliedis
powerfulenoughforafulldaysuseunderaverageconditions.
Conserving Battery Power
TheTX670hasbuilt-inpowersavingfeaturestohelpyouget
themaximumamountoftimebetweencharges.Ifyouneedto
operateyourTX670inasituationwhereyourequiremaximum
batterylife(e.g.aremotesitewherethereisnoconvenient
rechargingfacilitynearby)thefollowinghintscangreatlyreduce
theamountofpowerdrawnfromthebatteries.
Standby Mode
TheTX670willautomaticallyenterthe‘Standby’modewhen
itisinactive(i.e.nottransmittingorreceivingsignals).Whilein
Standbymodeitwillstillcheckforincomingsignalsbutitwill
drawconsiderablylesspowerfromthebatteries.Assoonasa
signalisheardorthekeysarepressedtheTX670will‘wakeup’
again.ThisStandbymodeisautomaticandbyitselfcanextend
thebatterylifebymanyhours.
Using CTCSS
Ifyouareexpectingtoreceivesignalsonabusychannel,you
canprogramthatchannelforCTCSSoperationandgettheother
persontocallyouusingthesameCTCSStone.Yourradiowill
thenremaininStandbyandignoreallothersignalsuntilyour
selectedCTCSStoneisreceived.
Belt
Clip
SpringClip
Battery
Cover
This side
facesup

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IftheincomingsignalisencodedwithaCTCSStonethatmatches
theonesetinyourradio,theLEDindicatorwilllightorangeand
youwillbeabletohearthesignalinthespeaker.
IftheLEDindicatorlightsgreenandthe iconappearsbut
youcannothearthesignal,itislikelythatyourradiohasCTCSS
enabledandtheincomingsignalisnotusingyourselectedCTCSS
tone(see‘ModeSettings’formoredetailsonCTCSSsettings).
Ifnofurthersignalsarereceived,theunitwillreturnto
Standbymode.
TRANSMITTING
Totransmit,pressandholdthePush-To-Talk(PTT)switch.The
otherradioyouaretalkingtomustbesettothesamechannel
(andCTCSScodeifapplicable).HoldtheTX670approximately5
to8cmsfromyourfacewiththeantennaverticalandspeakinto
thebuilt-inmicrophone.
WhilethePTTswitchispressed,theLEDindicatorontheupper
edgeoftheradiowilllightredandthe iconwillappearon
theLCD.
Whenyouhavenishedspeaking,releasethePTTswitchto
receiveincomingsignals(itisnotpossibletotransmitandreceive
atthesametime).Ifnofurthersignalsarereceived,theunitwill
reverttoStandbymode.
TIP: The PTTswitchcanalsobeusedtotransmitaCallAlarm
melody.WhentheCallAlarmmelodyisenabled(seeModesettings
formoredetailsontheCallAlarmsettings),pressingthePTTswitch
twicequicklywillcallanotherpartyonthesamechannelandplaythe
CallAlarmmelodyintheirradio’sspeaker.Whenthishappens,the
iconwillappearandtheLEDindicatorwilllightredforabout3
seconds.Thecallalarmcanonlybesentonceperminute.
DUPLEX/MONITOR KEY
The DUP/MON keyisadualfunctionkeythatcontrolsboththe
DuplexandMonitorfunctions.
DUP Key
PressthisbuttontoselectDuplexmodeonchannels1–8and
41–48.Duplexcanbeenabledordisabledseparatelyon
individualchannels.
Scanning
TheTX670drawsmorepowerfromthebatterieswhenscanning
thanwhenmonitoringasinglechannel.Thisisbecauseitmust
‘wakeup’moreoftentomonitoreachchannelforactivity.
Youcanlengthenthebatterylifebyavoidinganyunnecessary
scanning.Inaddition,scanningincreasesthechanceofndinga
signaltherebykeepingthereceiver‘awake’andtheSquelchopen
moreoften.
Low Transmit Power Settings
Thetransmitterhasbothhighandlowpowersettings.Ifyou
areonlyoperatingovershortdistances,areinareasonably
highlocationorareclosetoalocalrepeater,tryusingthe
lowtransmitterpowersetting.Thisreducesthetransmitter
powerfrom2wattsto1watteffectivelydoublingthetalktime
available.
GENERAl OPER ATION
POWER ON/OFF
Rotate the Volumecontrolclockwisepastthe‘click’toturnthe
radio ON.Rotatethecontrolcounter-clockwisepasttheclickto
turntheradioOFF again.
ADJUSTING THE VOLUME
Withtheunitpoweredon,rotatetheVolumecontrolclockwise
toincreasethevolumeandcounter-clockwisetodecrease
thevolume.
DISPLAY LIGHTING
TheLCDbacklightingactivatesautomaticallywheneverakeyis
pressedandturnsoffautomaticallyafterabout5seconds.
RECEIVING SIGNALS
WhiletheTX670isnotreceivingsignals,itwillremaininthe
Standbymodetoconservebatterypower.
Whenasignalisreceived,theLEDindicatorontheupperedge
oftheradiowilllightgreenandthe iconwillappearonthe
display.AdjusttheVolumecontrolforacomfortable
listeninglevel.

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DuplexoperationallowstheTX670totransmitonadifferent
frequencytothatwhichitreceives.Thisallowsoperation
throughrepeaterstationsinyourarea.Repeatersautomatically
re-transmityoursignaloveramuchwiderarea,providinggreatly
increasedrange.TheDuplexmodeonlyworksonchannels
1–8and41–48.WithDuplexselected,yourTX670actually
transmits30channelshigherthanitreceives.
*Emergencychannelonly
Channel
Selected
Receive
Channel
Transmit
Channel
1 1 31
2 2 32
3 3 33
4 4 34
5* 5* 35*
6 6 36
7 7 37
8 8 38
41 41 71
42 42 72
43 43 73
44 44 74
45 45 75
46 46 76
47 47 77
48 48 78
ToswitchbetweenSimplexandDuplexmodes,selectaduplex
channel(1–8,41–48)thenbrieypresstheDUPbutton.
WhenDuplexmodeisselected,‘DUP’appearsonthedisplayon
thatchannel.
Mon Key
ToopentheSquelch,pressandholdtheMONkey.Thisallows
youtocheckthecurrentchannelforactivitybeforetransmitting,
particularlyifyouhaveCTCSSenabled.WhentheSquelchis
open,theLEDindicatorontheupperedgeoftheradiowilllight
green,the iconappearsonthedisplayandyouwillhear
staticorhissifthechannelisclear.Donottransmitifyouhear
anyconversations.PressandholdtheMONkeyagaintoclose
theSquelch.
CTCSS
ToactivateordeactivateCTCSS,thecurrentchannelmusthavea
CTCSScodeselectedviatheMODEkey,(seeMODEkeysettings
formoredetails).
SCAN/MEMORY KEY
The SCANkeyisadualfunctionkeythatcontrolsbothScanand
MemoryFunctions.
Scanning Function
ChannelScanningallowsyoutomonitorchannelsthathave
beenincludedintheactivescanlist.Theactivescanlistincludes
allchannelswhichdisplaytheicon‘M’ontheLCD.
Toenablechannelscanning,brieypresstheSCANkey.‘SCAN’
willbedisplayedandtheradiowillshowrapidlychanging
channelnumbersasitscansthroughthechannels.While
scanning,brieypressthe or keystoselectthe
scan direction.
ToexittheScanmode,brieypresstheSCANkeyagain.The
TX670willreturntonormaloperationand‘SCAN’willdisappear
fromthedisplay.
Scanning Features
• Ifasignalisreceived,thescanispaused,allowingyou
totransmitandreceiveonthatchannel.Theradiowill
automaticallyresumescanningafewsecondsafterthelast
receptionortransmission.
• PressthePTTswitchwhiletheunitisscanningtojumptothe
homechannel(thehomechannelisthechanneltheradiowas
onatthetimescanningwasactivated).Youcanthentransmit
andreceiveonthatchannel.Theradiowillautomatically
resumescanningafewsecondsafterthelastreceptionor
transmission.

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• Whentheunithasstoppedonabusychannel,pressthe or
keysto‘skip’overthebusychannelandcontinuescanning.
TIP: TheScanmodewillreducetheoverallbatterylifebecause
theStandby(batterysaver)featureisoverridden.Youshouldavoid
scanningifthebatteriesarerunninglowandyouneedtoconserve
power.
Memory Function
TheMemoryfunctionenablesanddisablesthecurrentchannel
tobememorisedintothescanninglist.Whenthechannelis
memorisedwiththe‘MEM’iconontheLCD,scanningwill
includethechannel.Whenthechannelisdeletedfromthe
scanninglist,thechannelwillbeskippeduponscanning.All
channelsaresavedtoMemoryduringmanufacture.Todisable
theMemory,pressandholdtheSCAN/MEMkey.
MODE/KEY-LOCK KEY
Mode Function
The MODEkeyisusedtosetthevariousfeaturesettingsofthe
TX670.Thefollowingchartshowstheorderoftheseselections:
Standby Mode:
  1.CTCSSCodeSelection
  2.TransmitterPower
  3.VOXSettings
  4.DualWatchChannel
  5.SquelchSettings
  6.RogerBeepToneSelection
  7.ButtonBeepToneSelection
  8.CallAlarmSelection
Key-Lock Function
TheKey-Lockfunctiondisablesthekeystopreventaccidentalkey
pressesfromchangingthepreferredsettingsoftheradio.When
thekeysarelocked,the Iconisdisplayedandall keypresses
areignoredexceptforthePTTandKey-Lockfunctions.
ToactivatetheKey-Lock,pressandholdtheMODEbuttonfor
about2seconds.The iconwillappearonthedisplay.
TocanceltheKey-Lock,pressandholdtheMODEbuttonagain.
The iconwilldisappearfromthedisplay.
Selecting Channels
Inthe‘Standby’mode,pressthe or keytostepup/down
onechannel.Pressandhold the or keystoquicklyscroll
up/down throughthechannels.
In‘Mode edit’mode,pressthe or keytostepupwardsor
downwardsthroughtheselectedmodesettings.
1. CTCSS CODE SELECTION
TheContinuousToneCodedSquelchSystem(CTCSS)isaSquelch
quietingsystemthatallowsgroupsofuserstosharethesame
channelwithoutdisturbingeachother.Ituses1of38lowfrequency
tonestoopenandclosetheSquelchontheradio.TheCTCSScodes
donotpreventothersfromhearingyourtransmission.Theysimply
provideyouwithaquieterchannelbypreventingyoufromhearing
transmissionsthatarenotusingthesamecodeasyouandare
thereforenotdirectedatyou.
NOTE: TocommunicatewithotherUHFradiosusingCTCSS,all
radiosyouwishtocommunicatewithmustbeswitchedtothesame
channelandhavethesameCTCSScodeselected.Ifyouwishto
receivesignalsfromUHFradiosthatarenotusingCTCSSyouwill
needtoeitherdisableCTCSSonthatchannelorsettheCTCSScode
to‘oF‘asdescribedinthefollowing‘note’.
To select a CTCSS Code
Fromthe‘Standby’mode:
1.Selecttherequiredchannelusingthe or keys.
2. Press the MODEkeyONCE(1)toselectthe CTCSS setting
mode.‘CTC’willashonthedisplay.
3. Press the or keystoselecttherequiredCTCSScode.
(Alistofavailablecodesisshowninthechartonpage22).
NOTE: To turnCTCSSoffonthischannel,settheCTCSScodeto‘oF‘.

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3.TodisabletheVOXcompletely,settheVOXsensitivityto‘oF’.
4.PresstheMODE or PTTkeymomentarilytoconrmandstore
yourselection.WhentheVOXisenabled,‘VOX’isvisibleon
thedisplay.
4. DUAL WATCH SETTINGS
TheDualWatchmodeletsyoumonitortwochannelsatthesame
time.WhileinDualWatchmode,theunitwillmonitorboththe
currentlyselectedchannelandaseconddualwatchchannel.
To set the Dual Watch Mode
Fromthe‘Standby’mode:
1.PresstheMODEkeyFOUR(4)timestoselecttheDualWatch
settingmode.The‘DW’iconwillashonthedisplay.
2. Press the or keystoselecttheDualWatchchannel
number(1–40).TodisabletheDualWatchModealtogether
select‘oF‘.
3. Press the MODE or PTT keymomentarilytoconrmandstore
yourDualWatchchannelselection‘DW’ willbedisplayedat
thetopoftheLCDandthedisplaywillnowalternatebetween
thecurrentlyselectedchannelandtheDualWatchchannel.
ToEXITtheDualWatchmode,momentarilypresstheSCANkey.
ThisisequivalenttosettingtheDualWatchmodeto‘oF‘.
Dual Watch Operation
• IfasignalisreceivedontheDualWatchchannel,theradio
willpauseonthatchannelforaslongasitremainsbusy,
thenresumetheDualWatchve(5)secondsafterthelast
transmission has ceased.
• Ifyouwishtotalkonthebusychannel,pressthePTTswitch
whiletheradioislockedontothatchannelthentalkinthe
usualway.
• Ifyouwishtotalkontheselectedchannel,pressthePTT
switchwhilenosignalsarebeingreceived.Theradiowill
switchtotheselectedchannel.
4.PresstheMODE or PTTkeymomentarilytoconrmandstore
yourselection.
NOTE: CTCSSisonlyenabledonthosechannelswithCTCSScodes
selected.Allotherchannelswillcontinuetooperatenormally.
2. TRANSMITTER POWER
ThetransmitterpowercanbesettoHigh(2watts)orLow
(1watt).Thepowersettingappliestoallchannels.
To set the Transmit Power
Fromthe‘Standby’mode:
1.Pressthe MODEkeyTWICE(2)toselectthepowersetting
mode.‘Po’willbedisplayedand‘HI’or‘LO’willbeashingon
thedisplay.
2. Press the or keystoselecttherequiredpowersetting.
Select‘HI’forhighpoweror‘LO’forlowpower.
3. Press the MODE or PTTkeymomentarilytoconrmandstore
yourselection.
TheTX670shouldnowdisplaytheselectedchannelnumber
alongwith‘HI’ifyouhaveselectedhighpower.Ifyouhave
selectedlowpower,thissettingwillnotbeindicated.
3. VOX SETTINGS
TheVOXfeatureletsyouhavehands-freeconversations.When
youspeak,themicrophoneautomaticallydetectsyourvoice(or
othernearbysound)causingtheradiototransmitwithoutthe
needtopressthePTTswitch.
To set radio for VOX Operation
Fromthe‘Standby’mode:
1 PresstheMODEkeyTHREE(3)timestoselecttheVOXsetting
mode.‘VOX’willashonthedisplay.
2. Press the or keystoselectthesensitivityfrom1
(minimum)to3(maximum).Theminimumsettingrequiresa
loudervoicetoactivatetheVOX.Themaximumsettingwill
activatetheVOXwithamuchsoftervoice.

PAGE18 I N S T R U C T I O N M A N UA L T X 6 7 0 T X 6 7 0 I N S T R U C T I O N M A N UA L PAGE19
To turn the Button Beeps Tones On or Off
Fromthe‘Standby’mode:
1.PresstheMODEkeySEVEN(7)timestoselecttheButton
Beepsettingmode.‘bP’willbedisplayedalongwithaashing
icon.
2. Press the or keystosetthebeepto‘On‘or‘oF‘
as desired.
3. Press the MODE or PTTkeymomentarilytoconrmandstore
yourselection.IftheButtonBeepfunctionison,the icon
willremainsteadyonthedisplayandabeepwillbeheardin
responsetokeyactivation.
8. CALL ALARM SELECTION
TheTX670provides5userselectablecallalarmmelodiestoalert
otheruserstoyourincomingcall.Whenenabled,themelody
canbetransmittedtoanotheruserwhereitwillbeheardinthe
speakerofthereceivingradio.
To select your favourite Call Alarm Melody
Fromthe‘Standby’mode:
1.PresstheMODEkeyNINE(9)timestoselecttheCallAlarm
settingmode.‘C’willbedisplayed.
2. Press the or keystopreview(listen)tothe5available
callmelodies.
3.Toturnthecallmelodiesoff,select‘oF‘.
4.PresstheMODE or PTTkeymomentarilytoconrmandstore
yourselection.
To send the Call Alarm Melody
Press the PTTswitchtwicequickly.TheLEDindicatorwilllight
redforafewsecondsasthemelodyissent.Themelodywillbe
heardinthespeakerofthereceivingradio.
5. SQUELCH SETTINGS
The‘Squelch’modeletsyouadjustthereceivingsensitivity.The
highertheSquelchlevelisset,thestrongerthesignalneedsto
beforittobereceivedbytheradio.
To set the ‘Squelch’ Mode
1.PresstheMODEkeyFIVE(5)timestoselecttheSquelch
settingmode.The‘ ’iconwillashonthedisplay.
2. Press the or keystoselecttheSquelchlevelfrom01
(lowest)to03(highest)setting.
3. Press the MODE or PTTkeymomentarilytoconrmandstore
yourSquelchmodeselection.
6. ROGER BEEP TONE SELECTION
TheRogerBeepisatonewhichisautomaticallytransmitted
wheneverthePTTswitchisreleased.Thistonealertsthe
receivingpartythatyourtransmissionhasended.
To enable or disable the Roger Beep Tone
Fromthe‘Standby’mode:
1.PresstheMODEkeySIX(6)timestoselecttheRogerBeep
settingmode.‘Rb’willbedisplayedalongwithaashing .
2. Press the or keystosetthebeepto‘On‘or‘oF‘
as desired.
3. Press the MODE or PTTkeymomentarilytoconrmandstore
yourselection.IftheRogerBeepfunctionison,the icon
willremainsteadyonthedisplay.
7. BUTTON BEEP TONE SELECTION
TheButtonBeeptonefeatureallowstheradiotosounda
conrmationtonewhenevertheMON, SCAN, MODE, or
keysarepressed.