Midland G12 Manual

Midland Walkie-talkies G12

Læs gratis den danske manual til Midland G12 (64 sider) i kategorien Walkie-talkies. Denne vejledning er vurderet som hjælpsom af 15 personer og har en gennemsnitlig bedømmelse på 3.6 stjerner ud af 8 anmeldelser. Har du et spørgsmål om Midland G12, eller vil du spørge andre brugere om produktet?

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Side 1/64

English

In this manual…

1 Introduction 3

2 Safety First 4

2.1 Conventions and Symbols in this manual 4

2.2 Warning notes 4

2.3 Service 5

3 Parts description 6

3.1 Description of parts and of the commands 6

3.2 Symbols on the display 8

4 Preparing to use 9

4.1 Fixing/removing the belt clip 9

4.2 Installing/removing the batteries 9

4.3 Recharging the batteries 10

4.4 Proper use of rechargeable batteries 11

5 Standard operations 12

5.1 Turning on/off 12

5.2 Back light of the display 12

5.3 Checking the remain battery charge 12

5.4 Volume regulation 13

5.5 Selection of the operational channel 13

5.6 Reception and transmission 14

5.7 Operationalmodes(openorrestrictedtrafc) 15

5.8 Monitor function 16

5.9 Selection of transmission power 16

5.10 Keypad lock 17

5.11 Audio call function 17

5.12 Enabling/disabling keypad tones 17

5.13 Enabling/disabling roger beep 17

6 Functions of the MENU button 18

6.1 Selection of melody call 19

6.2 VOX Mode 19

6.3 Scanning of favourite channels 21

6.4 Vibration alert 22

6.5 Dual Watch 22

6.6 Transmission lock when channel is busy 22

6.7 Compander 22

6.8 Timeout timer 23

6.9 Forced reception time 23

7 Programming frequencies and CTCSS/DCS codes 24

7.1 Programming modes 24

8 Cleaning and maintenance of your radio 25

8.1 Cleaning the radio 25

8.2 Contacts of desk battery charger 25

8.3 Connectors 25

9 Troubleshooting 26

9.1 Troubleshooting table 26

9.2 Reset 28

English

10Technicalspecication 29

11 Frequencies and codes tables 30

11.1 Equivalent number of reference

- PMR446 channels radio frequencies 30MIDLAND G12

11.2 Equivalence of reference number of

- frequencies of CTCSS tones 30MIDLAND G12

11.3 Equivalence of reference number

- DCS codes 31MIDLAND G12

English

1 Introduction

MIDLAND G12 is a high-quality handheld transceiver. Its robust and

reliable design makes it ideally suitable for professional use and free

timepleasure.It’ssuitableforinniteapplications:frombuildingsites,

shoppingcentres,hotels,theatres,tradefairs,discos,seasideresorts

etc.Moreoverit’sidealfortrailblazing,sport,communicationamong

vehicles,gameseldsandmuchmore.MIDLAND G12 enables you

to communicate on all channels of the PMR446 band using a great

number of functions. The main features of your transceiver are the

following:

• A total of 16 channels - 8 channels for open trafc and an

additional 8 with CTCSS (Continuous Tone Code Squelch

System)

• Large, automatically backlit LCD display - makes using the

device easier, even in poor lighting condition, by constantly

displaying parameters and settings

• Status LED - shows the device’s current operation status

(reception,stand-byortransmission)

• Automatic background noise suppressor (squelch) - when

the device is in reception mode waiting for calls (standby), it

automatically eliminates the annoying background noise

• Automatic power saver - when in standby mode it enables

energy saving thus lengthening battery life

• CTCSS/DCS codes - restrict communication to only those users

who have set the same code of yours

• Channel scan - automatically searches radio signals on your

favourite channels

• Dual Watch -allowsmonitoringofradiotrafcontwochannelsof

your choice

• VOX (Voice Operated eXchange) - activates transmission just

with your voice without the need to press the

PTT button. When

usedinconjunctionwithoptionalaudioaccessories,thisfeature

enables the user to operate completely hands-free

• Call button - puts the transceiver into transmission mode,

generating one of the 10 audio call tones of your choice.

• Vibrating alert - used in conjunction with the call button it enables

the sending/receiving of silent calls

• High/low power selection - enables two levels of transmission

power(reducedforshort-distancecommunication),savingenergy

and extending battery life

• Reception signal indicator - indicates signal strength by the

number of LCD bars

• Battery charge indicator - indicates remaining battery charge

• Keypad lock - avoids change of settings by the accidental

pressing of buttons

• Can be also powered by 3 AA batteries - the type of AA batteries

(notincluded)usedcaneitherberechargeableoralkaline,giving

totalexibilityandeconomyofuse

• Speaker and microphone/battery charger connector

(SPK, MIC/CHG) - these connectors enable the use of various

microphone accessories, as well as the use of an optional

standard wall battery charger

• Belt clip - for a more convenient use

2 The manufacturer, in its effort to constantly improve product

quality, reserves the right to change characteristics and features

without prior notice.

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2 Safety First

2.1 Conventions and Symbols in this manual

For ease and convenience of use, this manual uses symbols to

highlight,practicaladviceandcriticaloressentialinformation.

! This symbol marks ‘caution’. These special notices - relating

to technical information, danger, safety, cautionary advices

and/or information - are of the utmost importance. You should

pay careful attention to this type of information to avoid

possible damage to your equipment and to avoid potential

danger to yourself or other people.

2 This symbol marks a ‘note’. Notes are hints or tips offering

additional information you are advised to follow to get the best

performance out of the device.

Important words sentences are underlined.

2.2 Warning notes

! Be careful to follow strictly all warnings in this chapter

2.2.a General

• Before using the transceiver, carefully read all instructions

contained in this manual in the order in which they are written.

Cross-reference to paragraphs and chapters is provided for ease

of use only. After reading this manual keep it for future reference.

• Read and follow all warnings and instruction labels found on the

radio and its accessories.

• Always observe laws and regulations regarding the use of

transceivers,whichmaychangefromcountrytocountry.Where

prohibited,orinareaswheretheradiomaycauseinterferenceor

danger,turnoffyourradio.

• Do not use your transceiver if the antenna is damaged - although

theradioisprotected,thismayseriouslydamageits R.F.power

stages.

• During transmission keep the antenna at least 2.5cm from your

head and body and maintain a distance from other electrical/

electronic devices. Your transceiver contains a radio transmitter.

Beawarethat,whenyoupressthe

PTT or CALLbutton,theradio

emitsradiofrequency(RF)energy.Ifyouusecardiacstimulators,

hearingaids,orothermedicaldevices,consultyourdoctororthe

manufacturer of the device to ensure the device is adequately

protected from RF energy. Your doctor will be able to suggest

ways of obtaining these information.

• Keep a tight grip on your radio to prevent falls and consequently

possible damage. Ensure the

PTT CALL or button is not pressed

accidentally when you do not need to transmit. Do not hold the

transceiver by the antenna! This is a delicate part of the device

and it is vital for the proper functioning of the radio.

• Be aware of environmental conditions - although the transceiver

wasdesignedtooperateunderthemostsevereconditions,itis

important to avoid exposure to environments that are excessively

humid or dusty, or to temperatures outside the -20° to +55°

Celsiusrange.Alsoavoidexposuretodirectsunlight,jarring,and

excessive vibration.

• Beforeusingtheradio,ensurethatallprotectivecoversandparts

are inperfect operatingcondition, in order to ensuremaximum

protection against humidity and atmospheric agents.

• Although this radio was designed to be used in extreme weather

conditions,avoid gettingitwetasmuchas possible anddonot

let any type of liquid fall on it. If the transceiver or one of the

English

accessoriesgetswet, dryit off assoonaspossiblewithasoft,

clean cloth. If you feel that liquid may have penetrated the radio’s

housing,contactaservicecentreforacheck.

• Do not use the radio, its accessories, and/or substitute the

batteries in potentially explosive environments. A single spark

may cause an explosion.

• Do not take apart the radio or its accessories for any reason! The

equipment has already been calibrated for maximum performance

inthefactory.Onlyqualiedexpertsequippedwithspecializedtools

and workinginauthorizedcentres, canhandlethetransceiver’s

precision mechanics and electronics. Unauthorized dismantling of

the transceiver will void the warranty. Any service operation must

be carried out only in an authorised centre. For further information

contact your local dealer.

• Use original accessories only; otherwise you may seriously

damage your handheld transceiver.

• Turn off the radio and unplug the power supply before cleaning it.

Forfurtherinformation,refertoChapter8.

2.2.b Batteries and chargers

• Before using thebattery chargers, carefully read all notes and

cautions regarding this equipment.

• Donotshort-circuitthebatteryterminals:doingsomayresultin

re,burns,orexplosions.

• Never throw batteries into a re. Do not expose them to high

temperatures;doingsomaycauseresorexplosions.Becareful

to always follow local regulations (which may not be the same as

thoseofthecountryofyourhabitualresidence).

• Use only original rechargeable batteries and battery charger. Use

ofunapprovedaccessoriesmaycauseburns,res,orexplosions,

and may cause serious damage or injuries to people.

• Battery chargers should only be used indoors and with suitable

rechargeable batteries.

• Ensure your power supply conforms to the one required for your

batterycharger(ACadaptor).Ifyouareunsure,checkwithyour

vendor or your local electricity supplier.

• To avoid damaging the power cord of your battery charger,

connect it where it will not be stepped on and where nothing will

be placed on top of it. Insert the prongs into a socket that has

been grounded.

• Avoid shocks and excessive vibrations. Do not use the battery

chargerifithasbeenknocked,hadafallorappearsdamaged.In

this case immediately contact an authorized service centre.

• To reduce the risk of electrical shocks, disconnect the power

cable before performing cleaning or maintenance. Take hold of

the plug (not the cord!) whenremoving it fromthe socket. Use

of inappropriate extension cords may cause re or electrical

shocks.

• Do not expose the batteries directly to temperatures outside the

-20°C to +55°C range during storage. Do not charge them in

temperaturesoutsidethe+5to+55°Crange.

2.3 Service

You are advised to write down the serial number of your transceiver

in the space provided below. This number is found on a label sticker

inside the batteries compartment of the transceiver and will be useful

in the event of repair/servicing and/or loss and/or theft.

Serial number _______________________

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3 Parts description

3.1 Description of parts and of the

commands

Refer to the following pictures to locate the

variouspartsandgetfamiliarwiththedevice:

English

[1] Antenna(cannotbedetached)-receivesandtransmitradio

signals.

[ - turns the equipment on/off and 2] ON/OFF/VOLUME knob

adjusts audio volume reception.

[3] LCD display - the liquid crystal display constantly displays

operating status of the device and functions currently in use.

For further details see paragraph 3.2.

[4] SCAN/MON button - enables memory scanning. When kept

pressed it enables the monitor function.

[5] MENU button - enables the access to program functions and

settings.

[6] The – button-setsvariousfunctions,forexampleitreduces

the number of the currently tuned radio channel. If this

buttonispressedwhile thedevice is beingswitched on,the

conrmationsoundwhichisaudiblewhenabuttonispressed

is enabled/disabled.

[7] Integrated microphone - Here is where the microphone is

housed.

[8] Integrated speaker - Here is where the speaker is housed.

[9] The + button -setsvariousfunctions,forexampleitincreases

the number of the currently tuned radio channel. If this button

is pressed while the device is being switched on, the roger

sound is enabled/disabled.

[10] CALL/LOCK button-whenbrieypresseditsendsanaudio

call of your chosen melody on the currently selected channel.

If it is kept pressed blocks/unblocks the keypad.

[11] Push To Talk PTT button - press this button to switch to

transmission.

[12] Status LED - shows the operative state of the device in the

followingway:

• Waiting for calls (standby) - ashes every 4/5 seconds

(ref.par.5.6.a)

• Receiving signals -asheseverysecond(ref.par.5.6.b)

• Transmission-constantlylit(ref.par.5.6.c)

[13] Connectors SPK, MIC/CHG (on the side of the device

under the rubber protection) - connectors for speaker and

external microphone. Their purpose, whenused together,is

for connecting optional accessories, such as microphones,

earphones etc. Also, the MIC CHG socket is used for

connecting the optional wall battery charger.

[14] Removable belt clip - for the convenience of attaching the

device to the belt.

[15] Batteries compartment cover - this compartment holds 3 AA

batteries(optional)-rechargeable1.2VNiMH,oralkaline1.5V

(nonrechargeable)-tosupplyyourhandheldtransceiver.The

compartment can also house the battery pack that comes with

the desktop charger supplied.

[16] Contact points for charging batteries (on the rear of the

device) - used to connect to the desktop battery charger

supplied.

[17] Battery cover clasp - holds the battery cover in place.

English

3.2 Symbols on the display

The liquid crystal display of your PMR446 transceiver constantly

displays the operating status of the device and the function currently

inuse.Possiblesymbolsandtheirsettingaredescribedbelow:

Symbol Meaning Description Ref.

Battery charge

level

Shows remaining level of battery

charge.

5.3

Signal strength During reception the level of

signal strength is shown on the

basis of the number of bars

displayed. During broadcast all

barsash.

5.6.b

Radio channel

/multifunction

Wheninstandby,thesethree

large digits show the channel

currently selected. During

programming they show

different parameters and their

values (e.g. = level of power

transmission).

5.5

Power Save It shows when power save is

active

5.6.a

Multifunction

indicator

Wheninstandby,thesmall

digits to the right of the display

show the CTCSS tone or DCS

code currently set (e.g. =

toneCTCSSNum.16).During

transmission it shows different

parameters and their values

accordingly. For example

meansON(functionisactive)

and means OFF (function is

disabled).

5.7

Low power

transmission

Lower power transmission is

selected.

5.9

Keypad locked Keypad is locked. 5.10

VOX VOX function is active (Voice

OperatedeXchange)-itenables

hands free use of your device.

6.2

Channel

scanning

Channel scanning is taking

place(automaticsignalsearch)

on the preset channels.

6.3

Call vibrate Call vibration is active 6.4

Dual watch Dual Watch (quick search of

signalsontwochannels)is

active.

6.5

Timeout Timer Timeout Timer is active. 6.8

Programming The device is in programming

mode.

7.1

English

4 Preparing to use

4.1 Fixing/removing the

belt clip

The rear belt clip allows the user to

easily clip the transceiver to a belt.

However, it may be necessary to

remove the clip in order to make

radio maintenance or battery

substitution easier to carry out.

To remove the clip lift the release

lever and drag the clip upwards until

it comes free.

To fasten the clip to the device,

position it above the groove found

ofthebackofthetransceiver,then

drag it downwards until it locks into

place.

! Ensure the belt clip is correctly attached; otherwise the

transceiver may become unattached and accidentally fall.

4.2 Installing/removing the batteries

The transceiver is powered by 3 optional batteries AA type. There are

twobatteryoptionsavailable:

• Rechargeable 1.2V NiMH - available in various capacities (in

mAh).Higherbatterycapacityallowsforgreaterduty,butrequires

longer recharging time.

• Non-rechargeable 1.5V alkaline.

MIDLAND G12 can also be powered by a battery pack that ships

with the supplied desktop battery charger

2 For installing/removing the batteries, it is not necessary to remove

the belt clip (procedure outlined in par. 4.1), however, this does

make it easier to access the batteries

! Do not install a combination of rechargeable and alkaline

batteries in your transceiver. Always use 3 AA batteries of

the same type, brand, and from the same stock. Always use

the same batteries, as a set in order to ensure their level of

charge is the same.

! If you are not using the transceiver for an extended period,

remove the batteries.

4.2.a Installing the AA batteries:

1) Carefully unhook the rear clasp by slightly raising it and

catchingthedepressionwithangernail,thenrotatingtheclasp

downwards.

2) Carefully lift the rear protective

cover from the battery

compartment and remove it.

3) Insertthebatteries(rechargeable

or alkaline) in the battery

compartment, ensuring the

batteries are correctly oriented

in their polarity, as indicated

on the inside of the battery

compartment.

4) Carefully insert the cover’s tabs into the slots at the topof the

battery compartment, and then slowly press the cover down

Lever

Groove

Slot

English

against the battery compartment until it is perfectly aligned with

the transceiver body.

5) Carefullyreturntheclaspontotheprotectivecover,pressinguntil

it clicks into place.

! Ensure you have placed the batteries with the correct polarity

and that you have properly closed the battery compartment

cover.

4.2.b To remove the batteries:

1) Followsteps1and2asoutlinedabove.

2) Removethebatteriesfromtheradio.

3) Followsteps4and5asoutlinedabove.

4.2.c To install the battery pack

1) Followsteps1and2ofparagraph4.2.a.

2) Placethebatterypackwiththelabelandthecontactsfacingyou

3) Carryoutsteps4and5ofparagraph4.2.a.

4.3 Recharging the batteries

Two types of battery chargers are available. Each one is able to

chargeNiMHbatterieswithoutremovingthemfromtheradio:

• - this is the least Standard optional wall battery charger

expensive and it is used with the AA batteries and the battery

packsupplied.Forfurtherdetails,refertopar.4.3.a.

• Desktop battery charger - for greater exibility of use the

transceiver is simply slotted inside the battery charger. It can only

be used with the battery pack . For details consult par. 4.3.b.

If the batteries are new it is necessary to charge them fully before

using them. For subsequent recharges please refer to par. 4.4.

2 New batteries do not immediately allow for maximum duty, as

they must be “run in” through at least 3 complete cycles of charge/

discharge.

! Use the battery charger only if you have installed 3

rechargeable NiMH batteries. Never attempt to charge other

types of batteries (particularly alkaline) - doing so may cause

explosion and/or personal injury.

! Do not overcharge the batteries! The charging process does

not stop automatically even when the batteries have been

fully charged. Do not forget therefore, to remove the charger

from the transceiver as soon as the batteries are charged.

! In order to get the best out of your batteries for subsequent

recharges consult par 4.4. Also consult the warning relative

to the use of batteries in par. 2.2.b.

4.3.a Standard optional wall battery charger

1) Ensure the radio is turned off (it must remain off for the entire

periodofrecharge).

2) Carefully liftthe rubber ap on theright side of the transceiver,

slippingangernailintothecentreleftpart,androtatingittowards

theright,asindicatedinthegure.

3) Insert the plug at the end of the battery charger cable into the

MIC/CHGsocket(thelower,smallerone),andthenconnectthe

battery charger to an AC power source.

4) Once the batteries are charged (see table in the next page for

charging times), disconnect the battery charger from the AC

power source, and then disconnect the transceiver from the

battery charger.

5) Returntherubberaptoitsplace.

English

! Donotforgettoreplacetherubberapaftercharging.

Battery capacity (mAh) Time (hours)

1.200 10

1.800 15

APPROXIMATETIMESFORACOMPLETERECHARGE

ACCORDINGTOTHETYPEOFBATTERYUSED

4.3.b Supplied desk top battery charger

1) Ensure that the battery pack is installed (the charger does not

workwithAAtypeNiMHbatteries).

2) Ensurethattheradioisturnedoff(itmustremainturnedoffforthe

wholechargingcycle)

3) Insert the transceiver, with the front facing you into the battery

chargerslot,andthenconnectthebatterychargertoanACpower

source.Chargingwillbegin,andtheappropriateLEDindicatorwill

light up.

4) When charging is complete take out the transceiver from the

housing and unplug the battery charger from the mains.

The battery pack is 1800mAh and takes approximately 10 hours for

a full charge.

4.4 Proper use of rechargeable batteries

Whenpossible,rechargebatteriesonlywhenat least two of the icon

bars have disappeared (the remaining battery charge icon should

indicate ).Beawarethatchargingtimevariesinproportiontothe

amountofresidualchargeremaininginthebattery,therefore,when

onlytwobarsappearintheicon,thisindicatesyouwillrequireabout

66% of time indicated on the table in par. 4.3.a. This is particularly

important otherwise you risk undercharging or overcharging the

batteries.

Ifyouusethebatteriesproperly,youwillobtainatleast400cyclesof

charge/discharge at maximum duty.

2 Rechargeable batteries lose their charge over time even if they

are not used (auto-discharge); this is normal. A NiMH (Nickel

Metal Hydrate) battery may lose 10 - 20% of its energy within a

few days.

4.4.a Memory effect

Rechargeable NiMH (Nickel-Metal-Hydrate) batteries are virtually

unaffected by the “memory effect”. This phenomenon is associated

with a drastic reduction of battery autonomy and is triggered if the

batteries are regularly charged before having lost at least 50-75% of

their power and/or they are not completely recharged. To avoid the

memoryeffect:

• When possible, recharge the batteries only when they are

completely discharged; i.e. when the battery indicator will be

.ashing

• Do not disconnect the battery charger before battery charging is

complete.

• Discharge and recharge your batteries completely at least twice a

month.

In any case, the bestsolution for avoiding the memory effect is to

useinturntwo batterysets:whileonein usethesparesetcanbe

fully charged.

Memory effect can be easily cancelled after 3-4 complete cycles of

charge/discharge.

2 The memory effect should not be confused with the normal

English

battery life, which is 400 cycles of charge/discharge on average.

It is completely normal for operating duty to decrease when the

batteries have reached the end of their life; at this point, you will

need to substitute the battery set.

5 Standard operations

5.1 Turning on/off

To switch on the transceiver, turn the ON/OFF/VOLUME knob

clockwiseuntilyouhearitclick:theLCDdisplaywilllightupandyou

willhearabeep(acousticsignal).Ifthevibratingfunctionhasbeen

previously activated it will also vibrate for about one second (ref. par.

6.4).

2 The LCD display backlighting will automatically turn off after

approx. ve seconds in order to save energy, though the display

itself will remain active.

Toturnoffthetransceiver,turntheknobcounter-clockwiseuntilyou

hear another click.

5.2 Back light of the display

Whenever you turn the device on and every time you press a

key (excluding PTT CALL/LOCK o  keys), the display backlight is

automaticallyswitchedonforaboutvesecondssoastoallowyou

to read even in poor lighting conditions. If during the ve seconds

you press another key, you extendthedurationof the backlight by

anotherveseconds.

2 The display backlight absorbs additional battery charge. For this

reason you are advised to make moderate use

5.3 Checking the remain battery charge

When the transceiver is on standby (waiting for call), the battery

charge indicator shows the remaining level of charge according to

thefollowingchart:

English

Indicator Meaning Notes

Full charge The symbol will show when batteries

are completely charged (e.g. Soon after

recharging)

2/3 of

charge

remaining

1/3 of

charge

remaining

Low level of remaining charge. It is

advisable to reduce consumption in

order to extend battery life and get the

most out of remaining charge.

Battery

completely

discharged

Insufcientchargetoallownormal

functioning of the device which will turn

itself off after a short period. Recharge

the batteries or change them with

another set.

2 The remaining charge indicator does not update the reading

during charging or transmission.

2 When the level of remaining charge is equal to or less than ,

the device gives a warning signal.

5.4 Volume regulation

Bring the knob to medium position. Once the ON/OFF/VOLUME

transceiverreceivesasignal,adjustthevolumetoacomfortablelevel.

Ifnosignalisreceived,usetheSCAN/MON button as described in

par. 5.8.

2 Battery consumption is directly proportional to the audio level.

5.5 Selection of the operational channel

1) Pressoncethe button.Thedisplaywillstartashing.MENU

2) Pressthe+ – button or to scroll up or down the channel list till

you select the desired channel. To rapidly scroll channels keep

pressed the + – button or untilyoureachthespecicchannel.

2 Obviously the other party must select the same channel otherwise

you cannot establish contact

2 You are advised to consult the following chapter to learn about

which channels to select

5.5.a Which channel should be selected?

Your MIDLAND G12has16channelsintotal(8+8)asshowninthe

followingtable.Pleasenotethat:

• Channels 1 to 8 are programmed with the eight frequencies of the

PMR446 band.

• Channels 9 to 16 are programmed with the same radio frequencies

as the ones from 1 to 8 (e.g. channel 9 has the same frequency as

channel1),withtheadditionhoweverofthetoneCTCSSNr.16.

Therefore,whentheyare selected,thedisplayshowsc16 after

the channel number.

English

Channel Frequency (MHz) CTCSS/DCS

1446.00625 NO

2446.01875 NO

3446.03125 NO

4446.04375 NO

5446.05625 NO

6446.06875 NO

7446.08125 NO

8446.09375 NO

9446.00625 CTCSS Nr. 16

10 446.01875 CTCSS Nr. 16

11 446.03125 CTCSS Nr. 16

12 446.04375 CTCSS Nr. 16

13 446.05625 CTCSS Nr. 16

14 446.06875 CTCSS Nr. 16

15 446.08125 CTCSS Nr. 16

16 446.09375 CTCSS Nr. 16

If you are communicating with a device of a different manufacturer

you are advised to use one of the rst eight channels so as to

guarantee maximum compatibility. Choose obviously the channel

that seems the less busy.

However,iftheotherpartyisalsoequippedwithMIDLAND G12 (or

anotherdeviceequipped with CTCSStones), youcanchoose any

channel. Should all of the eight PMR446 frequencies be busy in your

areathenyoucanchooseachannel(theleastbusy)from9to16so

that the CTCSS only transmits communication from other members

of your group. For further details on CTCSS consult par. 5.7.

5.6 Reception and transmission

Duringtransmissionandreception,ensuretheantennaisasvertical

as possible and free from obstacles in the direction of your party to

get the best radio signal.

2 Reception and transmission mode described below is the

simplest and is the so-called “open trafc”. It is however possible

to operate, in a different way. Consult par. 5.7.

5.6.a Waiting for calls

When the PTTisnotpressed,theradioisinreceptionmodeandit

is ready to receive incoming communication on the currently tuned

channel(stand-by).

When no signals are received,thecircuitcalledsquelchmutesthe

audio of your device in order to cancel the annoying background

noise. In these circumstances, the status LED will ash every 4/5

seconds.

If you are not receiving communications and have not activated any

commands for at least 10 seconds, the  icon will ash on the

display,indicatingthatthepowersaverfunctionhasbeenautomatically

activatedandthestatusLEDwillasheveryfourseconds.

5.6.b Reception

As soon as you receive a signal the squelch function which silences

the audio in the absence of signals will be automatically disabled

allowingyoutohearthemessagereceived.ThestatusLEDashes

morefrequently(onceabout everysecond)andon thedisplay the

icon shows the strength of the signal (the number of bars is

directlyproportionaltothestrengthofthesignal).

2 If reception is broken because of weak signal try to use the monitor

function as described in par. 5.8.

English

5.6.c Transmission

1) Ensurethatnooneelseistalkingontheselectedchannel(consult

previousparagraph).

2) Keep pressed thePTT button. The status LED is constantly lit

indicating that you are transmitting. The icon of the display

ashesonceeverysecond.

3) Waitabriefmoment,andthenspeakinanormalvoice,intothe

transceiver’s microphone at a distance of approx. 5 cm. All stations

that are tuned on the same channel will hear your message.

4) Whenyouhavecompletedyourmessage,releasethe

PTTbutton:

The status LED is turned off and the icon disappears from

the display and the transceiver returns to reception.

2 Radio communication does not normally allow talking and receiving

simultaneously. For this reason complete your messages within a

reasonable time. You will reduce battery consumption and you will

allow users to transmit in turn.

2 Obviously, you can only talk with others who are tuned on your

same channel. However if you can hear someone but cannot

transmit to them it is possible that the other party is making use of

CTCSS tones or DCS codes. For further details consult par. 5.7.

5.7Operationalmodes(openorrestrictedtrafc)

MIDLAND G12canbeusedintwoways:

Mode Pre-set

on channels

Notes

Opentrafc

(without

CTCSS/DCS)

From 1 to 8 It is the mode so far described

whichallowsmaximumexibility

with devices of other manufactures.

However,ifotherswhoarenot

part of your line of communication

use the channel you are using in

yourarea,youwillalsoheartheir

conversation.Opentrafcisnot

idealforprofessionalpurposes,as

communication which is not relevant

for you may distract you.

Restricted

trafc

(with

CTCSS/DCS)

From 9 to 16

(with CTCSS

Nr.16tone)

You and anyone else within your

line of communication can hear only

the conversations which use the

same CTCSS tone or DCS code

that you have previously set on all

the devices of the group. CTCSS

and DCS are a sort of access code

which restricts communication only

to devices which are tuned on your

frequency and have set your same

code.

2 If you wish to change the CTCSS tone or the DCS code of a

channel programmed in restricted trafc mode follow the

procedure set out in par. 7.1.

English

2 Restricted trafc mode does not guarantee privacy of

communication. Indeed, when using CTCSS/DCS, anyone

operating in open trafc mode can hear your conversation, they

cannot however take part, as they would not be heard from you.

2 Restricted trafc mode allows the use of the same radio frequency

by more than one group. For example, group A using CTCSS No.

16 tone will not hear conversations of group B who uses CTCSS

No. 20 tone and vice versa. However, if more than one user

transmits at the same time (e.g. one user from group A together

with one user from group B) on the same channel, there will be

interference. For this reason do not transmit if the radio signals

that the channel is busy even if you do not hear anything, waiting

instead for it to be free. If in doubt use the monitor function.

2 If you have to use in the proximity of electrical MIDLAND G12

equipment which generates electrical noise causing the squelch

to open frequently, it is advisable that you use the restricted trafc

mode.

5.8 Monitor function

Inordertolistenforextremelyweaksignals,asexplainedinpar.5.6.b,

thecircuitwhichsilencesaudioreception(squelch)isautomatically

turned off as soon as you receive a signal. However extremely poor

signalsmaynottriggerittoswitchoffand,asaconsequenceofthis,

you will hear broken conversation. In this case the function monitor

will help by disabling temporarily the squelch.

Moreover if the channel you are using has been programmed to

operate in restricted trafc (ref. par. 5.7), with the function monitor

you can temporarily disable CTCSS or DCS in order to monitor all

communication on the channel you are tuned in.

Inordertoactivatethefunctionmonitor,keeppressthe

SCAN/MON

button for about three seconds until you hear a faint background

noise(oreventuallytheweaksignal).

Inordertodisablethemonitorfunction,repeattheoperation.

2 Do not use the monitor function for too long as this will use up the

battery. The energy saving function (ref. par. 5.6.a) functions only

when the audio of your device is silenced (squelch enabled).

5.9 Selection of transmission power

The transmission phase absorbs the most energy. To extend the

batteryduty,youcanselectlowtransmissionpowerwhentransmitting

over short distances. When low transmission power is activated

willappearonthedisplay.Toselectlowtransmissionpower:

1) Presssixtimesthe

MENU button. The display shows Po (power of

transmission)followedbyLo Hi(low)or (high)ashingaccording

to the pre-set values.

2) Pressbuttons+ – o until you have selected the desired power.

3) PressPTTbuttontoexit,orwaitforfewseconds.Thedevicewill

go back to standby mode storing the new value set.

2 If you are transmitting to someone who is nearby, try always low

power of transmission. In this way you will extend battery life

and reduce the risk of being heard by others outside your line of

communication.

English

Menu Function Display

1 Selection of the operational channel (Channel)

2 Selection of melody call CA

3 Settings of internal VOX I

4 Settings of external VOX E

5 Selection of channels to be scanned

6 Selection of transmission power Po

7 Vibration alert VIb

8 Dual Watch

9 Transmission lock when channel is busy bLo

10 Compander CPd

11 Timeout timer tot

12 Forced reception time PtY

6.1 Selection of melody call

Asdescribedinpar.5.11,abriefpressingoftheCALL/LOCK button

sends an audio call. To choose one of the 10 available melodies do

thefollowing:

1) PresstwicetheMENU CA button. The display shows (CALL)on

therightandaashingnumber( )ontheleftwhichfrom 0 to 10

refers to the melody currently in use.

2) Press the + – button or until you have selected the desired

melody: during the selection each selected melody is played

through the speaker.

3) PressthePTT button to escape or wait for a few seconds. The

device will go back to standby mode having memorised the

chosen setting.

2 If at step 2 you select number 0, you will disable the call function

(briey pressing CALL/LOCK button will not carry out any

function).

6.2 VOX Mode

With VOX (Voice Operated eXchange) you can transmit without

pressinganybuttons:allyouneedtodoistalkintothemicrophone

at a short distance. If you rest the radio on a surface therefore you

can operate entirely hands free with VOX.

Moreover,byclippingthedevicetoyourbeltwiththeoptionalaudio

accessories (e.g. headphones with integrated microphone) which

connect to jacks SPK MIC/CHG and ,youcan operatehandsfree

even while you move around. This is the most suitable way for VOX

to work since your mouth will be at a constant distance from the

microphone.

You can enable/disable VOX and independently regulate its sensitivity

accordingto its use: with theoptional accessoriesor whether you

use it by itself.

Produkt Specifikationer

Mærke:	Midland
Kategori:	Walkie-talkies
Model:	G12

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