Icom IC-M220 Instruction Manual Download Page 31

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DIGITAL SELECTIVE CALLING (DSC)

Sending an Individual Acknowledgement

When you have received an Individual call (p. 29)

, send an Acknowledgement to the

calling station. When the Auto Ack is set to “Manual,” you can select an appropriate

acknowledgement type.

1. While an Individual call is being received, push

ALARM OFF

to turn OFF the alarm.

•The received call’s information is displayed.

2. Push

ACPT

•

The Acknowledgement category screen is displayed.

If you want to send an Acknowledgement “Able to

comply” right away, push

ABLE

If you cannot communicate, and want to return to the

operating screen, push

IGN

3. Push

ABLE

UNABLE

, or

NEW CH

to select the

Acknowledgement type.

ABLE

(Able to

Comply)

Sends an Acknowledgement without any

changes.

UNABLE

(Unable to

Comply):

Sends an Acknowledgement but cannot

communicate.

NEW CH

(Propose

New CH)

Able to communicate but proposes

another channel. Specify the channel by

pushing [▲] or [▼].

(Example: Channel 69)

4. Push

CALL

to send the Acknowledgement.

Summary of Contents for IC-M220

Page 1: ...INSTRUCTION MANUAL VHF MARINE TRANSCEIVERS M220 M220G ...

Page 2: ...ll channel Tri watch z z Built in Class D DSC function The transceiver has the DSC functions for distress alert transmission and reception as well as the general DSC calls such as Individual calls All ships calls Group calls and so on z z Built in GPS receiver For only the IC M220G IMPORTANT READ ALL INSTRUCTIONS carefully and completely before using the transceiver SAVE THIS INSTRUCTION MANUAL Th...

Page 3: ...S IS name of vessel z z Say your call sign or other indication of the vessel AND your 9 digit DSC ID if you have one z z LOCATED AT your position z z State the nature of the distress and assistance required z z Give any other information which might facilitate the rescue D D USING DIGITAL SELECTIVE CALLING 1 Lift up the key cover hold down DISTRESS for 3 seconds until the 3 short beeps and then on...

Page 4: ... antenna when persons are within the MPE radius of the antenna unless such persons such as driver or radio operator are shielded from antenna field by a grounded metallic barrier The MPE Radius is the minimum distance from the antenna axis that person should maintain in order to avoid RF exposure higher than the allowable MPE level set by FCC FAILURE TO OBSERVE THESE LIMITS MAY ALLOW THOSE WITHIN ...

Page 5: ...s comme le conducteur ou l opérateur radio ne soient protégées du champ de l antenne par un écran métallique relié à la masse Le rayon d exposition maximale admissible équivaut à la distance minimale que cette personne doit maintenir entre elle et l axe de l antenne pour éviter une exposition aux RF supérieure au niveau d exposition maximale admissible fixé par la FCC LE NON RESPECT DE CES LIMITES...

Page 6: ...érique de classe A conformément au point 15 de la réglementation FCC Ces limites sont définies de façon à fournir une protection raisonnable contre le brouillage préjudiciable lorsque cet appareil est utilisé dans un environnement commercial Cet équipement génère utilise et peut émettre un rayonnement de fréquence radio S il n a pas été installé conformément aux instructions il peut par ailleurs c...

Page 7: ... operation of the vessel may be hindered or where it could cause bodily injury CAUTION DO NOT place or leave the transceiver in areas with temperatures below 20 C 60 C 4ºF 140ºF or in areas subject to direct sunlight such as a dashboard CAUTION DO NOT use harsh solvents such as Benzine or alcohol when cleaning This could damage the equipment surfaces If the surface becomes dusty or dirty wipe it c...

Page 8: ...ISE EN GARDE NE PAS utiliser ou placer l émetteur récepteur dans des zones où la temperature est inférieure à 20 ou supérieure à 60 ou dans des zones soumises au rayonnement solaire direct telles le tableau de bord MISE EN GARDE NE PAS utiliser de dissolvants agressifs tels que du Benzène ou de l alcool lors du nettoyage car ils endommageraient les surfaces de l émetteur récepteur Si l émetteur ré...

Page 9: ...ophone connector is not screwed in completely or the transceiver has been dropped Contact your Icom distributor or your dealer for advice KEY ICON DESCRIPTION The keys are described in this manual as follows The keys that have an words or letters on them are described with the characters Example MENU CLR The Software Keys are described with the words or letters on a dark background such as ENT or ...

Page 10: ... 10 Receiving and transmitting 10 AquaQuake Water Draining function 11 Editing a channel name 11 5 SCAN OPERATION 12 Scan types 12 Setting Favorite channels 13 Starting a scan 13 6 DUALWATCH TRI WATCH 14 Description 14 Operation 14 7 DIGITAL SELECTIVE CALLING DSC 15 DSC address ID 15 Sending DSC calls other 20 Receiving DSC calls Distress 28 Receiving DSC calls other 29 DSC Log 33 Multiple task mo...

Page 11: ...agency for a Ship Radiotelephone license application This government issued license states the call sign which is your craft s identification for radio purposes 2 OPERATOR S LICENSE A Restricted Radiotelephone Operator Permit is the license most often held by small vessel radio operators when a radio is not required for safety purposes The Restricted Radiotelephone Operator Permit must be posted o...

Page 12: ...UME SQUELCH KEY PWR VOL SQL Hold down for 1 second to turn the transceiver ON or OFF Push once to display the volume level setting screen p 9 Push twice to display the squelch level setting screen p 9 7 MENU KEY MENU Push to display or close the Menu screen 8 CHANNEL 16 CALL CHANNEL KEY 16 C Push to select Channel 16 p 7 Hold down for 1 second to select the Call channel p 7 9 SOFTWARE KEYS pp 4 5 ...

Page 13: ...data is received Blinks while no position data is received 6 MAIL ICON p 33 Displayed when there is an unread DSC message Blinks until one of the called messages is read 7 CHANNEL SWITCH ICON p 36 Displayed when the CH Auto SW is set to Ignore after 10 sec or Manual 8 LOCAL INDICATOR Displayed when the RF Attenuation is ON For only the USA version 9 FAVORITE CHANNEL p 13 Displayed when a Favorite ...

Page 14: ...valid for 23 5 hours and then a warning message is displayed 15 SCAN INDICATOR SCAN or SCAN 16 is displayed while scanning p 13 DW or TW and the watched channel number is displayed while using the Dualwatch or Tri watch function p 14 Function Display Continued Software Keys Various often used functions are assigned to the Software Keys for easy access The functions icons are displayed above the So...

Page 15: ...sh to start or stop Dualwatch or Tri watch p 14 HI LO High Low Push to set the output power to high or low Some channels are set to only low power p 19 CH WX Channel Weather channel Push to select regular channels or Weather channels L L The Weather channel is for only the USA version CHAN is displayed for other versions L L While the Call channel or Channel 16 is displayed push this key to return...

Page 16: ... MMSI code The MMSI Input screen is displayed L L Push CLR twice to skip the entry If you skip the entry you cannot make a DSC call To enter the code after skipping turn OFF the power and then turn it ON again 3 Enter the MMSI code TIP Select a number using and Push ENT to enter the selected number Select or on the screen to move the cursor 4 Repeat step 3 to enter all 9 digits 5 Push the software...

Page 17: ...nd used to store your most often used channels in each Channel Group for quick recall See page 10 for details on setting the Call channel z z Hold down 16 C for 1 second to select the Call channel The Call channel number and CALL are displayed L L To return to the previously selected channel push or to display CHAN or CH WX and then push the software key below CHAN or CH WX D D Selecting a Channel...

Page 18: ... operating screen instead of the Channel Group 2 Push or to select a Weather channel The Weather channel list WX channel Frequency MHz WX channel Frequency MHz 1 162 550 6 162 500 2 162 400 7 162 525 3 162 475 8 161 650 4 162 425 9 161 775 5 162 450 10 163 275 D D Setting the Weather Alert To receive the weather alert set the WX Alert to On with Scan or On MENU Radio Settings WX Alert 1 Push MENU ...

Page 19: ...stronger than the set level A higher level blocks weak signals so that you can receive only stronger signals A lower level enables you to hear weak signals 1 Push VOL twice The squelch level adjustment screen is displayed 2 Push or to adjust the squelch level L L If no key is pushed for 5 seconds the screen automatically closes Adjusting the backlight or the display contrast 1 Open the BACKLIGHT o...

Page 20: ...eive CAUTION Transmitting without an antenna may damage the transceiver 1 Push or to select the channel to call on The channel number and name are briefly displayed Only when CH Close up is ON L L is displayed while receiving a signal 2 Hold down PTT and speak into the microphone at your normal voice level is displayed while transmitting 3 Release PTT to receive TIP To maximize the readability of ...

Page 21: ... OFF the function Editing a channel name You can edit the name of each operating channel and weather channel using numbers uppercase letters symbols and a space This enables easy recognition of the channels or stations All VHF marine channels are set with default names L L You can edit channel names only when the CH Close up is set to ON MENU Radio Settings CH Close up 1 Push or to select the chan...

Page 22: ...canned unless it is set as a Favorite channel CH 04 CH 02 CH 03 WX CH 01 CH 05 Priority Scan For the USA version When the Weather Alert function is ON the previously selected Weather channel is also scanned Sequentially searches through all Favorite channels while also periodically checking Channel 16 CH 16 CH 04 CH 02 CH 03 WX CH 01 CH 05 When a signal is received On Channel 16 The scan pauses un...

Page 23: ...fault some channels are preset as Favorite channels The preset channels differ depending on the transceiver version Starting a scan Example Starting a Normal Scan 1 Select a Channel Group on the Menu screen p 7 MENU Radio Settings Channel Group 2 Push or to display SCAN 3 Push SCAN The scan starts is displayed during a Normal Scan and is displayed during a Priority Scan and are displayed when a si...

Page 24: ...dio Settings Dual Tri Watch 2 Push or to select a channel 3 Push or to display DW Dualwatch or TW Tri watch 4 Push DW or TW Dualwatch or Tri watch starts is displayed for Dualwatch or is displayed for Tri watch L L is displayed when a signal is received on the Call channel L L A beep sounds and blinks when a signal is received on Channel 16 5 To cancel Dualwatch or Tri watch push DW or TW again CH...

Page 25: ...Enter an Individual or Group ID TIP Select a number using Push ENT to set the selected number Select or on the screen to move the cursor NOTE For a Group ID the first digit is fixed as 0 For any coast station ID the first two digits are fixed as 0 4 Push FIN The name entry screen is displayed 5 Enter the ID s name TIP Push 123 to use numbers and push to use characters and letters Select characters...

Page 26: ...date and time If no GPS data is received manually enter the position and Universal Time Coordinated UTC time NOTE The manual entry is disabled while valid GPS data is received The manually entered position and time is valid only for 23 5 hours or until turning OFF the transceiver 1 Open the POSITION INPUT screen MENU DSC Settings Position Input 2 Enter the latitude TIP Select a number or a compass...

Page 27: ...n beeps and a long beep sound The backlight blinks 3 After sending wait for an Acknowledgment call Waiting for ACK is displayed The Distress call is automatically sent every 3 5 to 4 5 minutes until an Acknowledgement is received or a Distress Cancel call is sent 4 When you receive an Acknowledgment an alarm sounds Push ALARM OFF to turn OFF the alarm Channel 16 is automatically selected 5 Hold do...

Page 28: ...g the position and time on page 16 for details 4 While lifting up the key cover hold down DISTRESS the red button for 3 seconds until you hear 3 short countdown beeps and a long beep sound The backlight blinks 5 After sending wait for an Acknowledgment Waiting for ACK is displayed L L The Distress call is automatically sent every 3 5 to 4 5 minutes until an Acknowledgment is received or a Distress...

Page 29: ...e wording of the cancellation by pushing 4 After communicating push FINISH L L The screen to the right is displayed 5 Push STBY to finish the Distress Cancel call Returns to the operating screen While waiting for an Acknowledgement CANCEL Cancels the Distress call and enables you to send a Cancel call RESEND Enables you to resend the Distress call by holding down DISTRESS again PAUSE Pauses the co...

Page 30: ... can also select Manual Input to manually enter the target station ID 6 Select Channel and then push ENT 7 Select a channel to assign and then push ENT L L The assigned channels are preset by default 8 Push CALL to send the Individual call Transmitting Individual Call is displayed and then Waiting for ACK is displayed L L If Channel 70 is busy the transceiver stands by until the channel becomes cl...

Page 31: ...ormation is displayed 2 Push ACPT The Acknowledgement category screen is displayed L L If you want to send an Acknowledgement Able to comply right away push ABLE L L If you cannot communicate and want to return to the operating screen push IGN 3 Push ABLE UNABLE or NEW CH to select the Acknowledgement type ABLE Able to Comply Sends an Acknowledgement without any changes UNABLE Unable to Comply Sen...

Page 32: ...3 Select All Ships and then push ENT The All Ships call is selected and returns to the OTHER DSC screen 4 Select Category and then push ENT The CATEGORY screen is displayed 5 Select a category of the call and the push ENT The category is set and returns to the OTHER DSC screen 6 Select Channel and then push ENT 7 Select the channel to assign and then push ENT L L The assigned channels are preset b...

Page 33: ...reen is displayed 3 Select Group and then push ENT The Group call is selected and returns to the OTHER DSC screen 4 Select Address and then push ENT The ADDRESS screen is displayed 5 Select the group to send a Group call and then push ENT L L You can also select Manual Input to manually enter the target group 6 Select Channel and then push ENT 7 Select the channel to assign and then push ENT L L T...

Page 34: ... 2 Select Test and then push ENT The Test call is selected and returns to the OTHER DSC screen 3 Select Address and then push ENT The ADDRESS screen is displayed 4 Select a station to send the Test call to L L You can also select Manual Input to manually enter the calling station 5 Push CALL to send the Test call L L If Channel 70 is busy the transceiver stands by until the channel becomes clear 6...

Page 35: ...ling station p 36 If the function is set to Manual do the following steps to send an Acknowledgement 1 After a Test call is being received push ALARM OFF to turn OFF the alarm 2 Push ACPT The received call s information is displayed 3 Push ACK The Test ACK confirmation screen is displayed 4 Push CALL to send the Acknowledgement Transmitting Test ACK is displayed 5 Push STBY and then push OK to ret...

Page 36: ... Polling Request call select Polling The message type is selected and returns to the OTHER DSC screen 4 Select Address and then push ENT 5 Select a target to send a Position Request call to and then push ENT L L You can also select Manual Input to manually enter the target ID 6 Push CALL to send the Position Request call Position Request call is sent and then Waiting for ACK is displayed L L If Ch...

Page 37: ...equest call is being received push ALARM OFF to turn OFF the alarm 2 Push ACPT The received call s information is displayed 3 Push ABLE to send an Able to Comply Acknowledgement or push UNABLE to send an Unable to Comply Acknowledgement L L If no valid GPS position is received you can manually enter the position and time in Position item on this screen See Entering the position and time on page 16...

Page 38: ...ftware Key below the intended operation IGN Ignore Returns to the operating screen The call is saved in the DSC Log blinks continuously until you display the call message PAUSE Pause PAUSE is not displayed if the CH Auto SW item is set to Manual p 36 Pauses the countdown until the assigned channel is automatically selected Select RESUME to resume the countdown The call is saved in the DSC Log ACPT...

Page 39: ...vidual call is received An alarm sounds RCVD INDIVIDUAL is displayed 1 Push ALARM OFF to turn OFF the alarm 2 Push the Software Key below the next operation IGN Ignore Ignores the call and returns to the operating screen The call is saved in the DSC Log blinks continuously until you display the call message ABLE Able to comply Sends an Individual Acknowledgement right away Automatically switches t...

Page 40: ...N Ignore Ignores the call and returns to the operating screen The call is saved in the DSC Log blinks continuously until you display the call message PAUSE Pause Pauses the countdown until the assigned channel is automatically selected Select RESUME to resume the countdown The call is saved in the DSC Log L L PAUSE is not displayed if the CH Auto SW item is set to Manual p 36 ACPT Accept Accepts t...

Page 41: ...OFF to turn OFF the alarm 2 Push the Software Key below the intended operation IGN Ignore Ignores the call and returns to the operating screen The call is saved in the DSC Log blinks continuously until you display the call message ABLE Able to comply Sends Acknowledgement Able to comply right away UNABLE Unable to Comply Sends an Acknowledgement Unable to Comply The call is saved in the DSC Log Di...

Page 42: ...nd returns to the operating screen The call is saved in the DSC Log blinks continuously until you display the call message ABLE Able to comply Sends a Test Acknowledgement Able to Comply The call is saved in the DSC Log ACPT Accept Accepts the call Displays the received call s information The call is saved in the DSC Log The received call s information is displayed Push ACK and then push CALL to s...

Page 43: ...hers displays the received DSC call log TIP You can also display the Received screen by pushing LOG on the operating screen 4 Select a log and then push ENT to display the detailed information EXIT Returns to the operating screen BACK Returns to the previous screen DEL Deletes the selected call log MMSI Saves the MMSI as an Individual ID D D Transmitted DSC Log The transceiver saves up to 30 DSC t...

Page 44: ...ver automatically exits the Task mode and returns to the operating screen When a Time out Timer activates an alarm sounds and a count down message is displayed for 10 seconds D D Holding a DSC task In the Multiple task mode you can hold or activate the DSC task as follows Example When a Group call is received 1 Push ALARM OFF to turn OFF the alarm The received call s information is displayed 2 Pus...

Page 45: ...st screen by pushing TASK The number of tasks is displayed at the top of the screen The number of tasks On the TASK LIST screen the following Software Keys are displayed STBY Holds the task and returns to the operating screen INFO Displays the task information DEL Finishes the selected task HOLD Holds the selected task ACTIVE Activates the selected task ...

Page 46: ...dgement CH Auto SW Select whether or not to automatically switch to channel 16 or the specified channel or ignore the call Accept After receiving a DSC call the transceiver remains on the operating channel for 10 seconds After that the transceiver automatically switches to the channel that is specified on the DSC call Ignore After receiving a DSC call if you do not push the Software Key below ACPT...

Page 47: ...for 23 5 hours z z Self Terminate An alarm sounds when duplicate Distress calls are received z z Discrete An alarm sounds when a lower priority call is received while receiving a high priority call CH 70 SQL Level Sets the Squelch level for Channel 70 to 1 10 or Open Self Test The Self Test sends DSC signals to the receiving AF circuit to compare the sending and receiving signals at the AF level P...

Page 48: ...sh or to select Configuration and then push ENT The CONFIGURATION screen is displayed L L Holding down or sequentially scrolls up or down through the Menu screen 3 Push or to select Key Beep and then push ENT The KEY BEEP screen is displayed 4 Push or to select Off and then push ENT Off is set and the transceiver returns to the previous screen TIP To exit the Menu screen push EXIT or MENU To retur...

Page 49: ...nnel p 20 GPS p 40 Configuration Backlight p 9 Display Contrast p 9 Key Beep p 40 Key Assignment p 40 UTC Offset p 40 Inactivity Timer p 40 GPS p 40 DSC Log Received Call log p 33 Transmitted Call Log p 33 Radio Settings Scan Type p 41 Scan Timer p 41 Dual Tri watch p 41 Channel Group p 41 Call Channel p 41 WX Alert p 41 FAV Settings p 41 CH Display p 41 CH Close up p 42 DSC Settings Position Inpu...

Page 50: ...ing UTC Offset Set the offset time between Universal Time Coordinated UTC and your local time to between 14 00 and 14 00 in 1 minute steps Inactivity Timer The transceiver automatically returns to the operation screen if you push no key for the set period of time for each mode z z Not DSC Setting for when a screen that is not related to DSC is displayed z z DSC Setting for when a screen that is re...

Page 51: ...elect USA INT CAN or DSC depending on the transceiver version L L See page 7 for details Call Channel You can change your Call channel The default setting differs depending on the transceiver version L L See page 10 for details WX Alert For the USA version an NOAA broadcast station transmits a Weather Alert tone before any important weather information L L See page 8 for details On with Scan The p...

Page 52: ...nging the operating channel On The channel number and the channel name are briefly displayed when changing the channel Off The channel name is not displayed on the screen D D Radio Info Displays your transceiver s MMSI code Software version and GPS version if built in D D Radio Settings Continued ...

Page 53: ...ont panel 2 Rotate the screw connector clockwise until it is completely tightened CAUTION Be sure that the microphone connector is screwed completely otherwise the transceiver may lose its waterproof protection Microphone s screw connector Mounting bracket For mounting bracket Flat washers M5 Spring washers M5 DC power cable Microphone hanger and screws 3 16 mm Screws 5 20 mm Knob bolts Microphone...

Page 54: ...of navigation equipment to receive position data from other ships An NMEA 0183 ver 2 0 or later sentence format DSC or DSE compatible navigation equipment is required The built in GPS outputs RMC GSA and GSV format sentences 2 AF OUT LEADS Connects to an external speaker Blue External Speaker Black External Speaker NOTE for NMEA In Out and AF Out leads The connectors are attached to keep the leads...

Page 55: ...e OPC 2014 cable After connecting an Individual DSC call can be made to the AIS target using the transponder without entering the target s MMSI code The OPC 2014 is supplied with the MA 500TR z z Connect each lead to the appropriate lead of the OPC 2014 as follows Listener A Data H Yellow To lead 3 Listener B Data L Green To lead 2 Talker A Data H White To lead 5 Talker B Data L Brown To lead 4 Fu...

Page 56: ... to the right Be sure that the transceiver is positioned where the GPS receiver has a clear view to receive signal from satellites 1 Mount the bracket securely to a surface which is more than 10 mm thick and can support more than 5 kg using the 2 supplied screws 5 20 mm NOTE When mounting the transceiver on a board fix the bracket to the board using the user supplied bolts and nuts as shown below ...

Page 57: ...iver body 5 Tighten the end bolts on the clamps rotate clockwise so that the clamps press firmly against the inside of the instrument control panel 6 Tighten the locking nuts rotate counterclockwise so that the transceiver is securely mounted in position as shown to the right Torque 2 N m 7 Connect the antenna and power cable and then return the instrument control panel to its original place Clamp...

Page 58: ... 66 5 H 110 1 D mm 6 2 W 2 6 H 4 3 D in Weight approximately 700 g 1 5 lb including microphone Transmitter Output power 25 W or 1 W Modulation system FSK Modulation Maximum frequency deviation 5 kHz Spurious emissions Less than 60 dBc Receiver Receive system Direct conversion system Sensitivity FM 0 22 μV typical at 12 dB SINAD DSC CH70 5 dBμ emf typical 1 BER Squelch sensitivity Less than 0 32 μV...

Page 59: ...an does not start z z More than 2 favorite channels are not set Set at least 2 favorite channels p 13 No beep sounds z z The Key Beep function is OFF Turn ON the function p 38 Individual or Group ID cannot be set z z The entered ID code is incorrect The first digit must be set to between 1 and 9 for an Individual ID Enter a correct ID code p 15 blinks instead of the position and time z z 23 5 hour...

Page 60: ...000 28A 157 400 157 400 28B RX only 162 000 60 60 156 025 160 625 61 156 075 160 675 61A 156 075 156 075 Channel Number Frequency MHz USA INT CAN Transmit Receive 62 156 125 160 725 62A 156 125 156 125 63 156 175 160 775 63A 63A 63A 156 175 156 175 64 64 156 225 160 825 64A 156 225 156 225 65 156 275 160 875 65A 65A 65A 2 156 275 156 275 66 156 325 160 925 66A 66A 66A 2 156 325 156 325 67 1 67 67 ...

Page 61: ...51 1 7 4 10 15 18 2 8 13 5 11 16 3 9 14 6 12 17 13 TEMPLATE R8 5 16 Maximum 156 5 6 5 32 53 2 3 32 66 5 2 5 8 Unit mm inch 139 5 15 32 ...

Page 62: ......

Page 63: ...ding 23 Group ID Deleting 16 DSC setting 36 I ICONS 3 4 Inactivity Timer Configuration 40 Individual Acknowledgement Sending 21 Individual call Receiving 29 Sending 20 Individual ID Deleting 16 DSC Settings 36 Entering 15 K Key Assignment Configuration 40 Key Beep Configuration 40 M MA 500TR Connecting 45 MBF 5 installation 47 Menu screen Items 39 Using 38 Microphone 2 Connecting 43 MMSI code ente...

Page 64: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan A7466H 1EX Printed in Japan 2018 Icom Inc ...

Page 65: ...e detail screen of the AIS target is displayed L L Confirm the transceiver is in the normal operating mode Otherwise you cannot make an Individual DSC call using the transponder 2 Push DSC to display the Voice channel selection screen and then push or to select a Voice channel L L Voice channels are already preset into the transponder in the recommended order L L When a coast station is selected i...

Page 66: ... is received an alarm sounds If Able to comply is received push ALARM OFF to turn OFF the alarm L L If Unable to comply is received push ALARM OFF to turn OFF the alarm then INDIVIDUAL CALL FAILED is displayed 6 Select the Intership channel specified in step 2 L L A different Intership channel will be selected if the station you called cannot use the channel 7 Push PTT and speak at your normal voi...

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