Function display (pgs. 6, 7) !7 !6 !5 !4

q w e r t

DISTRESS
y q DISTRESS SWITCH [DISTRESS] (p. 18) Push and hold for 5 sec. (approx.) to make a distress call. w CALL SWITCH [CALL] Push and hold for 1 sec. to start calling after DSC contents are setup. e CANCEL SWITCH [CANCEL] Cancels a distress or DSC repeat call. r HEADPHONE JACK [ ] Accepts headphones.
Output power: 2.5 mW with a 16 load (stereo/monaural)
i RX/CLARITY SWITCH [RX CLAR] After pushing [F], turns the clarity function ON and OFF. (p. 12)
[CH] is used for clarity control.
During DSC watch mode, enters Received Call Log screen. (p. 29)
[CH] is used for distress and other call selection.
o POWER SWITCH [POWER] Push to turn the power ON. Push and hold for 1 sec. to turn the power OFF. !0 TX/TRANSMIT FREQUENCY SWITCH [TX TXF] After pushing [F], displays the transmit frequency, and opens the squelch. Checks and monitors the transmit frequency while holding. (p. 10) During DSC watch mode, enters TX memory select screen. (p. 40)
[CH] is used for memory selection.
t MICROPHONE CONNECTOR [MIC] Accepts the supplied or optional microphone.
See p. 65 for appropriate microphones. See p. 62 for microphone connector information.
y GROUP SELECTOR [GRP] Selects groups in 20 channel steps and ITU marine channel groups. (p. 8) Selects items during quick/initial set mode, etc. u CHANNEL SELECTOR [CH] Selects an operating channel within the selected channel group such as ITU channels. (p. 8)
User channels can be selected from 1 to 160 (max.) in sequence regardless of the channel group.
!1 VOLUME CONTROL [VOL] Adjusts the audio output level.
Audio does not come from the speaker when: - The speaker OFF switch is turned ON. - The squelch function is turned ON and no signal is being received. - Pick the handset up with speaker switch position. (p. 5) - During DSC watch mode.
Changes setting or value of the selected item during quick/initial set mode, etc.
!2 FREQUENCY/CHANNEL SWITCH [FREQ/CH] Selects indication type: (p. 8) When channel comment indication is ON; switches channel comment indication ON and OFF. When channel comment indication is OFF; switches transmit frequency indication ON and OFF. After pushing [F], enters channel name programming mode, when channel comment indication is ON. (p. 13) !3 KEYPAD Inputs numeral 1 for channel number input, etc. Inputs 1, Q, Z, q, z or space for channel comment input. After pushing [F], turns the noise blanker function ON and OFF. (p. 11) Inputs numeral 2 for channel number input, etc. Inputs 2, A, B, C, a, b or c for channel comment input. After pushing [F], turns the squelch function ON and OFF. (p. 11) Inputs numeral 3 for channel number input, etc. Inputs 3, D, E, F, d, e or f for channel comment input. After pushing [F], starts and stops the scan function. (p. 9) Inputs numeral 4 for channel number input, etc. Inputs 4, G, H, I, g, h or i for channel comment input. After pushing [F], turns the external speaker output ON and OFF. (p. 10) Inputs numeral 5 for channel number input, etc. Inputs 5, J, K, L, j, k or l for channel comment input. After pushing [F], turns the AGC OFF function ON and OFF. (p. 11) Inputs numeral 6 for channel number input, etc. Inputs 6, M, N, O, m, n or o for channel comment input. After pushing [F], enters the RF gain adjustment mode. (p. 11) Inputs numeral 7 for channel number input, etc. Inputs 7, P, R, S, p, r or s for channel comment input.

TUNE J3E

y u i o

Frequency indication

TX NB SQL

SP AGC CLAR 0 CH UTC 16:23

u i y !1 o

DSC watch mode indication @2 !5 q !9 !8
MMSI 123456789 12.345.5 F1B GPS 34 34.000N 134 34.000E SP 12:34 Exit Unread MSG

e o @1

q RECEIVE INDICATOR RX appears when signals are received or the squelch is open. w TUNE INDICATOR TUNE blinks while tuning. (p. 10)
TUNE appears after tuning is completed with AT-141. THRU appears when the tuner through function is activated. SWR appears when the antenna SWR worsens during transmit, depending on the transmit output power. If it appears, check your antenna system.
!1 S/ANTENNA CURRENT INDICATOR Shows relative driving antenna current levels during transmit and receiving signal strength during receive. !2 NOISE BLANKER INDICATOR (p. 11) NB appears when the noise blanker function is activated. !3 SQUELCH INDICATOR (p. 11) SQL appears when the squelch is ON. !4 TRANSMIT INDICATOR TX appears during transmit. TX blinks while monitoring a transmit frequency. (p. 10) !5 CHANNEL NAME/RECEIVE FREQUENCY READOUT Shows the programmed channel names. Shows receive frequency when no channel name is programmed, or during frequency indication. During DSC watch mode, displays DSC WATCH. !6 TRANSMIT FREQUENCY READOUT Shows transmit frequency. !7 OPERATING GUIDE INDICATION During DSC watch mode operation, shows several types of guidance, according to the selected condition. !8 SCANNING FREQUENCY READOUT During DSC watch mode operation, shows the programmed scan frequency.

Decimal points blink.

e OPERATING MODE INDICATOR Shows the selected operating mode.
J3E, USB, H3E, AM, LSB, J2B, AFS, F1B, FSK, A1A or CW appears depending on operating mode and setting.
r SIMPLEX/DUPLEX INDICATOR SIMP appears when a simplex channel is selected. DUP appears when a duplex channel is selected. t FUNCTION INDICATOR appears when a secondary function can be accessed. y CLARITY INDICATOR (p. 12) CLAR appears when the clarity function is activated and shows shifting frequency in Hz. u SPEAKER OFF INDICATOR (p. 10) S P appears when the speaker output is turned OFF. i AGC OFF INDICATOR (p. 11) A G C appears when the AGC OFF function is turned ON. o POSITION/UTC TIME INDICATOR (p. 17) Shows position and/or UTC (or local) time. When an IEC61162-1 data is applied to [GPS], the indication is up dated automatically.

[F] [TX TXF] TX blinks and the display shows the transmit frequency.

I Functions for receive

D Squelch function
The squelch function detects signals with voice components and squelches (mutes) unwanted signals such as unmodulated beat signals. This provides quiet stand-by. When you need to receive weak signals, the squelch should be turned OFF. Push [F] then [2 and OFF.
to switch the function ON
[F] [2 SQL] SQL appears when the squelch function is turned ON.
See page 45 for the squelch level adjustment.

D Noise blanker

The noise blanker function reduces pulse type noise such as that coming from engine ignitions, etc. The noise blanker may distort reception of strong signals. In such cases, the noise blanker should be turned OFF. Push [F] then [1 NB] to switch the function ON and OFF.
See page 45 for the noise blanker level adjustment. [F] [1 NB] NB appears when the NB function is turned ON.

D AGC OFF function

The receive gain is automatically adjusted according to received signal strength with the AGC (Automatic Gain Control) function to prevent distortion from strong signals and to obtain a constant output level. When receiving weak signals with adjacent strong signals or noise, the AGC function may reduce the sensitivity. In this situation, the AGC function should be deactivated. Push [F] then [5 AGC] to switch the function ON and OFF.
[F] [5 AGC] A G C appears when the AGC function is turned OFF.

D RF gain setting

The receiver gain can be reduced with the RF gain setting. This may help to remove undesired weak signals while monitoring strong signals. Usually, the AGC function reduces the RF gain according to the receive signal strength and these weak signals are removed. However, during no signal reception, these weak signals may not be heard. In such cases, the RF gain may be useful for setting a minimum level at which to hear signals.
q Push [F] then [6 RF-G] to select the RF gain set mode, as shown below.
w Rotate [CH] to set the desired minimum cutting level.
0 (low sensitivity) to 9 (max. sensitivity) are available. S-meter shows the minimum permitted level.
e Push any key to exit the RF gain set mode.
I Functions for receive (continued)

Turn the power OFF in advance.
u Rotate [CH] to select Position, then push [ENT].

[MODE SET] [POWER]

******* DSC MENU ******* -------- Select -------P o s i t i o n Auto ACK Individual Group Geographical Position REQ SEL OK
w Rotate [GRP] to select the GPS DISPLAY then rotate [CH] to select the desired position indication type from simple and detail.

*** SET MODE ***

i Enter your position and the UTC time via the keypad, then push [ENT].
Push [3 SCAN] for the East, [9] for the West, [6 RF-G] for the North and [7] for the South setting. Rotate [CH] to move the cursor.

S I M P L E DETAIL

ITEM SEL
e Rotate [GRP] to select the OFFSET TIME then rotate [CH] to set the time difference between local and the UTC times within 12 to +12 hours in 10 minute steps.
******* Position ******* --- Position & time ---34 34.343N Latitude Longitude 135 34.343E 12:34 UTC Null OK
o Push [ENT] to program the position and time.
Return to the DSC MENU indication as in step u.
!0 Push [MODE SET] to exit the DSC menu.
Rotate [CH] to select Exit then push [ENT] also exits set mode. MNL appears instead of GPS.
r Turn the power OFF once, then ON again to exit quick set mode.
Simple position indication
Detail position indication
MMSI 123456789 12.345.0 F1B GPS Lat 34 34'N SP Lon135 34'E 12:34 Unread MSG Exit
MMSI 123456789 12.345.0 F1B GPS 34 34.000N SP 135 34.000E 12:34 Unread MSG Exit
I Position and time programming

CALL PROCEDURE

NEVER USE THE DISTRESS CALL WHEN YOUR SHIP OR A PERSON IS NOT IN AN EMERGENCY. DISTRESS CALLS CAN BE USED ONLY WHEN IMMEDIATE HELP IS NEEDED.

I Distress call

Simple distress call

DSC WATCH screen

RX ACK
Push and hold [DISTRESS] for 5 sec.

DISTRESS screen

MMSI 123456789 12.345.0 F1B GPS Lat 34 34'N SP Lon135 34'E 12:34 Exit
< Push 5sec. > 8.414.5 F1B 34 56.789N 123 45.678W 12:34

Regular distress call

DSC menu

Rotate

When receiving a DSC call, the received format specier and its contents are memorized into the received call log. Distress calls (including other calls with a distress category) are stored separately from other calls. q During DSC watch mode, push [RX CLAR] to enter the received DSC memory select screen.
Or, push [MODE SET], rotate [CH] to select Received Call Log then push [ENT].
Up to 20 distress and up to 20 other calls can be memorized.
t Push [ENT] to selects the trafc screen and monitor the trafc frequency.

RX < Traffic >

w Rotate [CH] to select the desired category from Distress and Others then push [ENT].
Unread message is displayed beside category when a message have not been read is available in the category. <No data> is displayed beside category when no received message is stored in the category.
** Received Call Log *** -------- Select -------D i s t r e s s U n r e a d m e s s a g e Others Unread message
GPS Lat 34 34'N Lon135 34'E 12:34 MSG Exit
y Push [RX CLAR] to dispaly the DSC message under the trafc frequency indication.
Rotate [CH] to scroll text to see hidden lines information. Push [RX CLAR] to return to the indication as step t.
e Rotate [CH] to select the desired DSC message.
* means the DSC messages have not been read. DTRS RLY stands for distress relay. Distress memory screen
** Received Call Log *** -------- Select -------123456789 * D i s t r e s s 111111111 *DTRS ACK 123123123 *DTRS RLY 123123123 *Distress DTRS ACK 123123123 Distress 123234234 SEL OK
------- Distress ------Distress ID:123456789 Undesignated Position:Lat 34 34'N Lon134 34'W UTC 12:34 2187.5kHz RX Freq:TX RX 2187.5kHz T r a f f i c :T e l e p h o n y TX 2182.0kHz RX 2182.0kHz Traffic Exit
u Push [FREQ/CH] to return to DSC watch mode. NOTE: When the DSC message with ? symbol is selected in step e, the message DATA ERROR is displayed at the bottom of the line in memory contents screen in step r.

Others memory screen

** Received Call Log *** -------- Select -------123456789 * I n d i v i d u a l 111111111 *Individual 123123123 Geographic 123456788 Individual SEL OK
r Push [ENT] to indicate the contents.
Rotate [CH] to scroll text to see hidden lines information.
** Received Call Log *** ------- Distress ------Distress ID:123456789 Undesignated Position:Lat 34 34'N Lon134 34'W UTC 12:34 Angle:123 Distance:1234nm 2187.5kHz RX Freq:TX RX 2187.5kHz T r a f f i c :T e l e p h o n y TX 2182.0kHz RX 2182.0kHz DEL Cancel OK

I Received information

I Distress acknowledgement call
When a distress acknowledgement call is received
************************ Distress ACK * * 123456789 * * ************************ Exit Traffic

< Traffic >

D Distress acknowledgement call operation
Distress call reception should stop after one sequence since the coast station should send back an acknowledgement to the ship. If the distress call continues even the coast station send back an acknowledgement, the ship in distress may not be receiving the call. In such cases, you should contact the coast station via the phone and send back an acknowledgement on be half of the coast station if the coast station requires.
NOTE: The distress acknowledgement call can be made for the distress call received on 2187.5 MHz only. The Distress ACK selection in DSC menu screen will not be displayed when a distress call on another frequency, such as 8414.5 MHz, is received.
***** Distress ACK ***** --------- Call --------Distress ID:123456789 Undesignated Position:Lat 34 34.000N Lon134 34.000W UTC 12:34 2187.5kHz Call Freq:TX RX 2187.5kHz Traffic:Telephony TX 2182.0kHz RX 2182.0kHz Call
******* DSC MENU ******* -------- Select -------Position Auto ACK Individual Group Geographical Position REQ Distress D i s t r e s s A C K Distress RLY Test Received Call Log TX memory Set up Self test Exit SEL OK
Push and hold for 1 sec. Start calling.
TX Distress ACK < Calling > F1B < Traffic > GPS Lat 34 34'N 'E L o n 4J 3 E 12:34 GPS Lat 34 34'N Exit Lon135 34'E 12:34 Exit
***** Distress ACK ***** -------- Select -------9 123456788
When a distress relay call is received
************************ Distress RLY * * 001234567 * * ************************ Exit Traffic
D Distress relay acknowledgement call operation (available only when individual distress relay call is received)
******* DSC MENU ******* -------- Select -------Position Auto ACK Individual Group Geographical Position REQ Distress Distress RLY Distress RLY ACK Test Received Call Log TX memory Set up Self test Exit SEL OK
Distress relay call selection Received DSC contents screen
*** Distress RLY ACK *** -------- Select -------7 007654321

J3E SEL OK

----- Distress RLY ----From:001234567 Distress ID:123456789 Undesignated Position:Lat 34 34'N Lon134 34'W UTC 12:34 2187.5kHz RX Freq:TX RX 2187.5kHz Traffic:Telephony TX 2182.0kHz RX 2182.0kHz Exit Traffic
*** Distress RLY ACK *** --------- Call --------To:001234567 Distress ID:123456789 Undesignated Position:Lat 34 34'N Lon134 34'W UTC 12:34 2187.5kHz Call Freq:TX RX 2187.5kHz Traffic:Telephony TX 2182.0kHz RX 2182.0kHz Call

ACK selection

******* Auto ACK ******* -------- Select -------Manual set Able to comply U n a b l e t o c o m p l y
About Auto ACK setting When Able to comply or Unable to comply is selected with Auto ACK setting as at right, the acknowledgement call is made automatically no acknowledgement call operation is necessary. When Manual set is selected, acknowledgement call operation is necessary, however, the acknowledgement call with the reason No operator is made automatically when no operation is performed for 25 sec. from the call reception.
******* Auto ACK ******* -------- Reason -------No reason given Busy C h a n n e l u n a b l e Mode unable Operator unavailable No operator Station barred Equipment disable Congestion Queue indication OK SEL
When a group call is received
************************ Group * * ICOM M801 * * ************************ Exit Traffic

Traffic screen

RX Group < Traffic > J3E GPS Lat 34 34'N Lon135 34'E 12:34 MSG Exit
Calling stations name appear when the same ID is preprogrammed.

I Polling call

When a polling request call is received
************************ Polling REQ * * 001234567 * * ************************

Exit ACK

** Received Call Log *** ----- Polling REQ -----From:001234567 Category:Routine RX Freq:TX 2177.0kHz RX 2177.0kHz Cancel ACK

Conrimation screen

***** Polling ACK ****** --------- Call --------To:001234567 Category:Routine RX Freq:TX 2177.0kHz RX 2177.0kHz Call
When a position request is received
************************ Position REQ * * ICOM M801 * * ************************ Exit ACK
Appears and operation is necessary only when Manual set is selected for Auto ACK setting. (p. 48)
***** Position ACK ***** --------- Call --------To:ICOM M801 Category:Safety Position:Lat 34 34.567N Lon134 34.567W UTC 12:34 Call Freq:TX 12345.0kHz RX 12345.0kHz Call
** Received Call Log *** ----- Position REQ ----From:ICOM M801 Category:Safety RX Freq:TX 12345.0kHz RX 12345.0kHz Cancel ACK
Position & UTC time confirmation
***** Position ACK ***** --- Position & time ---34 34.567N Latitude Longitude 134 34.567W 12:34 UTC Null OK

I Geographical area call

NOTE: The IC-M801GMDSS will not function for the geographical call when your position is out of the specied area.
When a geographical call is received
************************ * * * * * *G e o g r a p h i c a l * * * * * * ************ Geographic * * ************************ ************************ Exit Traffic

RX Geographical < Traffic > J3E GPS Lat 34 34'N Lon134 34'E 12:34 MSG Exit

MEMORY OPERATION

I Memory description
The IC-M801GMDSS has several kinds of memories as follows: Address and group ID code memories (p. 41) Call, trafc and scan frequency memories (p. 42) DSC transmission memory (described in this section) Received message memory (p. 29) 10 DSC transmission memory channels allow you to set often used format speciers and contents such as for routine calls, group calls, etc.

I Memory writing

q During DSC watch mode, select the desired format category (except distress and test), and set the message, call and trafc frequencies until the call stand-by screen is displayed as described in the CALL PROCEDURE section (pgs. 1827). w Push and hold [ENT] for 1 sec. to select the TX memory write condition. e Rotate [CH] to select the desired memory channel.
--- TX memory write ---1: 2: 3: 4: 5: SEL
r Push and hold [ENT] for 1 sec. again to store the condition into the selected memory channel.
The set DSC format and calling station ID/name appear.
0 : I n d i v i d u a l 1
1: 2: 3: 4: 5: SEL --- TX memory write ----
t Push [ENT] to return to the calling stand-by condition, or push [MODE SET] to return to DSC watch mode.
I Memory reading/transmitting/deleting
q Push [DSC] to select DSC watch mode, if necessary. w Push [TX TXF] to enter the DSC transmit memory screen.
Or, push [MODE SET], rotate [CH] to select TX memory then push [ENT], also selects the transmit memory screen.
r Push [ENT] to display the memory contents.
****** TX memory ******* ------ Individual -----To:987654321 Category:Routine Call Freq:TX 2187.5kHz RX 2187.5kHz Traffic:Telephony TX 2134.0kHz RX 2134.0kHz Call DEL
e Rotate [CH] to select the selected memory channel to be read.
****** TX memory ******* -------- Select -------0 : I n d i v i d u a l 1 1: 2: 3: 4: 5: SEL OK
t Operate as follows: When reading the memory contents only; Push [MODE SET] to return to DSC watch mode. When transmitting the memory contents; Push and hold [CALL] for 1 sec. When clearing the memory contents; Push and hold [CE] for 1 sec.

DSC MENU OPERATION

I General
Up to 100 ID codes with frequency and name can be programmed in MENU mode for easy recall during DSC call setting.

Quick Reference 17

In addition, the following settings/operation are available in DSC setup menu. Manual position/time setting (p. 17) Self-ID (MMSI code) indication (described in this section; p. 43)

I ID input

A total of 100 ID codes can be programmed as Address ID (for ships and coast stations) and Group ID (for group stations). A pair of frequencies (both transmit and receive) and ID name are also programmed together with the ID code which are used as call frequencies when using the ID code.

D SETTING PROCEDURES:

q During DSC menu indication, rotate [CH] to select Set up then push [ENT] to select setup menu.
The select screen is displayed as below.
******** Set up ******** -------- Select -------A d d r e s s I D Group ID Call frqeuency Traffic frqeuency Scan frqeuency Watch keeping receiver MMSI check OK SEL
r Push the numeral keys to input the desired 10-digit ID name, 9-digit code and both transmit and receive frequencies, then push [ENT].
Rotate [CH] to move the cursor. When entering group code, enter 0 (zero) for the rst digit. The frequencies entered should be within the marine frequency ranges as follows. 1.6 2.9999 MHz 4.0 4.9999 MHz 6.0 6.9999 MHz 8.0 8.9999 MHz 12.013.9999 MHz 16.017.9999 MHz 18.019.9999 MHz 22.022.9999 MHz 25.027.5000 MHz
******** Set up ******** ------ Address ID -----******** Set up ******** ------- Group ID ------Name:ICOM_M801_ ID:012345678 TX:_2345.0kHz RX:_2345.0kHz C an c e l OK
w Rotate [CH] to select the Address ID or Group ID, then push [ENT].
The address/group ID list screen is displayed.
******** Set up ******** ------ Address ID -----******** Set up ******** ------- Group ID ------< a d d >

C an c e l

t Push [ENT] to program the contents into the address or group ID.
Returns to the address/group ID list screen automatically. The ID list is displayed in alphabetical order for ID name, so [CH] rotation may be necessary for the programmed ID conrmation.
******** Set up ******** ------ Address ID -----******** Set up ******** ------- Group ID ------< a d d > 012345678 ICOM M801
When the memory is full: Memory full is displayed beside <add> indication when 100 ID codes have been programmed. Delete any unnecessary IDs in such cases (see p. 44 for delete). e Rotate [CH] to select <add> then push [ENT].

Push [DSC] to select DSC watch mode. Push [MODE SET] to select DSC menu. Rotate [CH] to select Set up then push [ENT]. Push [MODE SET] to return to DSC watch mode, or push [FREQ/CH] to return to the select screen.
******** Set up ******** ------ MMSI check -----ID:123456789 1.00 C an c e l OK

I Self testing

According to regulations, the IC-M801GMDSS has a self testing capability to check the internal AFSK encoder and decoder circuits without signal transmission via the transceiver. q During DSC watch mode, push [MODE set] to select DSC menu. w Rotate [CH] to select Self test then push [ENT] to start the self test.

****** Self test *******

If the circuit has a problem, the following message is displayed.
Both or either message is/are displayed depending on problem. DSC-RX NG : DSC receivers decoder circuit has a problem. TRANSC NG : Transceivers encoder or decoder circuit has a problem.

Testing.

OK DSC-RX NG TRANSC NG C an c e l OK
e OK is displayed when both encoder and decoder functioning correctly.
I Scanning distress frequency selection
w Rotate [CH] to select the Watch keeping receiver, then push [ENT].
Six distress frequencies for DSC operation are displayed.
******** Set up ******** -Watch keeping receiver8 7. 5 k H z 4207.5kHz 6312.0kHz 8414.5kHz 12577.0kHz 16804.5kHz OK SEL
e Rotate [CH] to select the desired distress frequency then push [ENT]. r Rotate [CH] to turn the selected frequency then push [ENT].
2187.5 kHz and 8414.5 kHz cannot be turned OFF.
*Watch keeping receiver* ------ 4207.5kHz ------OFF O N
t Push [MODE SET] to return to DSC watch mode, or push [FREQ/CH] to return to the select screen.
I Memory reading/deleting
q During setup select menu indication, rotate [CH] to select the desired memory item then push [ENT].
Push [DSC] to select DSC watch mode. Push [MODE SET] to select DSC menu. Rotate [CH] to select Set up then push [ENT].
e Operate as follows: When reading the memory contents only; Push [ENT] to return to the appropriate memory list screen. When deleting the memory contents; Push and hold [CE] for 1 sec.
- After deleting, the appropriate memory list screen is displayed automatically.

Voice squelch

This item turns the voice squelch function ON and OFF when operating in J3E and H3E modes. When the function is set to OFF, the squelch acts as an S-meter squelch for J3E and H3E modes. (default: ON)

REMOTE ID

This item selects the ID for the transceiver from 1 to 99. (default: 11)
D Initial set mode items (continued) Position indication type
Select the position indicating type from simple and detail. SIMPLE : Hides second digits (default) DETAIL : Shows second digits

S I M P L E

DETAIL SEL

Offset time

Set the offset time between the UTC and local time within 12:00 to +12:00 in 10 minutes steps. (default: 0:00)

Automatic print out

This item turns the automatic print out function ON and OFF when receiving a DSC call. OFF ON : Prints out the received DSC contents manually. : Prints out the received DSC contents automatically. (default)
Automatic acknowledgement
This item turns the automatic acknowledgement function ON and OFF when receiving a DSC call. OFF ON : Sends back an acknowledgement call manually. : Sends back an acknowledgement call automatically when a DSC call is received. (default)

Medical transport

This item enables medical transport call. OFF ON : No medical transport call is available. (default) : Medical transpot call is available.

Neutral ship

This item enables neutral ship call. OFF ON : No neutral ship call is available. (default) : Neutral ship call is available.

DSC data out

This item selects the DSC and DSE data output to the connected external unit, such as plotter, to [REMOTE] when receiving a DSC call. OFF : No data is output even when a DSC call is received. (default) ADDRESS ID : DSC and DSE data is output when the DSC call includes the stored address ID or group code is received. ALL : DSC and DSE data is output when a DSC call is received, even the call for other stations.

ADDRESS ID ALL SEL

CONNECTION AND INSTALLATION

I Supplied accessories

DMounting the controller/speaker
D Mounting angle attachment
q Attach the supplied rubber feet to the mounting angle, if desired.
w Attach the mounting angles using with the supplied hex head bolts (M615), at and spring washers as illustrated below.
Hex head bolt (M615) Spring washer Flat washer

Mounting angle

D Mounting the main unit
Hex head bolt (M650) Spring washer Flat washer
R WARNING! NEVER mount the transceiver main unit overhead. The weight of the unit is approximately 8.5 kg, but its apparent weight will increase several fold due to wave shocks or vibration. The unit must be mounted on a flat hard surface only.
Drill six holes of 6 mm (14 in) in diameter. Flat washer Spring washer Nut (M6)
I Using the optional MB-108
The optional MB-108 mounting bracket is available for mounting the transceivers main unit. The MB-108 allows you to one-touch attachment/detachment capabilities. q Attach the mounting handles with the supplied hex head bolts (M615), spring and flat washers as below.
CAUTION! WEAR GLOBES when installing the MB-108.
Edges of the MB-108 may be sharp and may easily cut your ngers, hands, etc. r Mount the transceiver main unit (mounting handles has attached) onto the mounting base.

Mounting handle

w Drill 7 holes of 68 mm (14516 in) in diameter, using the template supplied with the MB-108. e Attach the mounting base onto a at surface using with the hex head bolts (M650), spring and flat washers, and nuts, supplied with the MB-108, as below.
Hex head bolt (M650) Spring washer
t Fix the main unit by locking 4 latches on the mounting handles.
x Flat washer Mounting base z
Flat washer Spring washer Nut (M6)
The optional MB-75 ush mount is available for mounting the controller and speaker to a at surface such as an instrument panel. q Using the template on the page 67 for the remote controller (RC-25GMDSS), and page 69 for the speaker (SP-24E), carefully cut a hole into the instrument panel (or wherever you plan to mount the controller or the speaker). w Slide the controller or the speaker through the hole as shown below.
CAUTION: KEEP the transceiver and handset or microphone at least 1 meter away from your ships magnetic navigation compass.
t Tighten the end screws on the clamps (rotate clockwise) so that the clamps press rmly against the inside of the instrument control panel. y Tighten the locking nuts (rotate counterclockwise) so that the controller or speaker is securely mounted in position as below. u Connect the control cable then return the instrument control panel to its original place.
e Attach the supplied 2 screws (M58) and spacers on either side of the controller or speaker. r Attach the clamps on either side of the controller or speaker.

ANTENNA GROUND PRINCIPLES, TECHNICALLY SPEAKING
The marine antenna system for low, medium, and high frequency applications will utilize both the seawater as well as radiator for its entire operation. Like two kids on a teeter-totter, the system works well if there is a balance between the antenna radiator and the seawater ground. This balanced antenna system may electrically be compared to a dipole antenna system one-half wavelength long on the frequency band of operation with voltage and current loops equally distributed throughout the half-wave length system. In marine applications where a vertical antenna is used, this system is more precisely referred to as a Hertz antenna set-up. The white fiber glass whip is tuned to an electrical one-quarter wavelength and the ground system will make up the other one-quarter wavelength. We technically call the RF ground system a counterpoise, and the antenna the radiator. If either a one-quarter wavelength antenna or ground system is missing or inadequate, radio reception and transmission range will be severely reduced. How good was your car radio reception when someone broke off your whip antenna? The same degradation of range also takes place when there is little or no RF ground system for antenna to work against in a marine installation. Imagine a swimmer making a flip turn, but not having the side of the pool to push off from. The same thing happens with radio wave transmissions on single sideband. The most powerful antenna will not radiate a signal if it has not counterpoise to push off the signal from. In technical terms, the less RF ground, the higher the radiation resistance of the antenna system. This radiation resistance will lead to substantial power loss and single sideband equipment will not only perform poorly, but also get quite hot in the transmitter section. An inadequate single sideband RF ground will also lead to hot mikes where the operator actually receives a radio frequency burn each time the mike is held next to his mouth. Poor RF grounding will also lead to erratic movement of analogue dial instruments, bizarre behavior of automatic pilots while transmitting on the sideband 72
While this may also seem to be an insurmountable problem in running foil, rather than wire, foil handles quite nicely, even in tight places. The foil is easily soldered to the below waterline ground system, and then routed up the side of the hull into the area of the NAV station. It may be glassed into the hull, painted over, glued in, or even left resting on the side of the hull. The foil may be bent in order to accomplish a 90-degree turn. If the foil must absolutely pass through a small hole, it may be rolled up in a not-so-tight conguration and squeezed through the orice. Avoid a concentric type, for that type tends to cancel oscillating radio frequencies. Flat is best. There are several sticky marine compounds that will allow the foil to adhere to the underside of a hatch, or to the side of a hull. Almost anything will work, and there is little danger of any substantial amounts of voltage developing on your ground foil run. The ground foil and your complete RF ground system, which run inside the hull, also will not substantially change your corrosion exposure to the seawater. Galvanic corrosion problems occur when dissimilar metals are immersed in seawater. The ground system is not actually immersed, its coupling is only capacitive. Electrolysis is another form of corrosion where stray currents may begin to eat up underwater metals. Good wiring techniques for your 12-volt system independent of your RF ground system will eliminate electrolysis. Now lets get back to nding a spot to terminate that threeinch wide copper foil that emanates from the below waterline ground system. Most manufacturers of Loran weather fax and marine single sideband sets dont provide an easy way of adding ground foil to the stern end of their electronics! The best method is to run the foil up to the back of the equipment and use existing sheet metal screws to make a rm connection. Where a ground post stud with nuts and a washer are provided, all the better run the foil up to the stud, double it back on itself several times for strength, punch a hole in it, and then make the connection. Never negate all your hard work of running the foil by using a small jumper wire to interconnect the foil to the radio set-up. You will be putting a weak link in your ground system at radio frequencies. We usually accordion up the excess foil in back of the equipment so that we might remove the equipment for servicing with the foil attached. If you put the bends in the right spot, the foil will resume its natural collapsed state when the equipment is put back in place. Watch out for the sharp corners on the ground foil, they are capable of piercing through the plastic protective covering on electrical wires. Make sure that red and black voltage carrying wires are not allowed to rub up against the side of the ground foil. We usually ground everything with foil at the navigation station. This would include the casing of the wind and speed equipment, pilot control box, GPS, sideband, radar, VHF, and just about everything else that lights up. The more grounding you provide for your central electronics, the less problems you will have with stray RF. The ground foil must also run to remote tuners. This includes the ICOM single sideband tuner thats usually several feet away from the equipment. These tuners may be all the way back aft, adding another dimension to your ground foil run.

MF/HF MARINE TRANSCEIVER

* The above photo includes optional AT-141, automatic antenna tuner.
Class A DSC safety func Icoms technology and v

Meets GMDSS requirements

The IC-M801GMDSS is designed for Class A DSC operation. With the optional AT-141 antenna tuner, it provides a complete GMDSS MF/HF communication system as required for Commercial Solas regulated vessels voyaging in the A2 sea area. The radio also meets MED 96/98/EC, wheel mark requirements for European merchant MED ships.
Large LCD with full dot-matrix characters
The IC-M801GMDSS has a large full dot-matrix display which displays frequency or channel name. You can easily read the alphanumeric channel name, operating frequency, DSC setting, time, position, etc. In addition, dimmer and contrast level of the LCD are all adjustable to 10 different levels.

Numerous operating modes

The IC-M801GMDSS provides SSB, AM, CW, FSK and AFSK mode operation. The advanced DSP provides exible filter settings and optional filters are no longer required for narrow band mode operation.

Versatile conguration

The controller and speaker are separated from the main (RF) unit. The supplied 5m separation cable or optional 10m separation cable (OPC1575) can be used with the controller.

Powerful output power

A powerful 125W* (PEP) transmitter provides long distance communication you can rely on. A large aluminum chassis keeps the radio cool even during high duty cycle operation such as RTTY or E-mail operation.
* 85W (PEP) between 1.63.999MHz

Built-in ITU Class A DSC

An independent DSC receiver constantly watches MF/HF DSC channels, while using another channel. The DSC allows you to call intended ship(s) or coast station(s) directly as well as all ships in the geographic area. A total of 100 MMSI IDs can be stored with a 10-character name. In addition, the self test function allows you to check the DSC functions.

Rugged construction

The main unit is covered with a rugged aluminum casing, protecting internal parts from impact or salt corrosion. With the optional stainless steel one-action bracket, the main unit can be tightly installed or easily removed from a at surface.

Simplied operation

All channels are grouped in 20 channel groups. Large independent group and channel knobs provide quick and easy channel selection. You can also directly enter a channel number from the 10-keypad.

Built-in DC-DC converter

The IC-M801GMDSS has a built-in DC-DC power converter, which provides stable 13.6V DC converted from a 24V DC power supply. A floating ground system is employed.
General coverage receiver
Wide band, general coverage receive capability is available from 0.5 to 29.999MHz.
Optional automatic antenna tuner, AT-141
The optional AT-141, automatic antenna tuner, tunes all frequencies in all modes. It easily connects to the ICM801GMDSS with the optional shielded cable. If the tuner cannot tune the antenna, the IC-M801 GMDSS bypasses the tuner and displays an alert on the display.
ctionality combined with value

Voice squelch control

The VSC (Voice squelch control) function* only opens the squelch, when the radio detects voice componets contained in the signal, while ignoring noise or an unmodulated signal.

* J3E and H3E mode only.

Versatile extensibility
The IC-M801GMDSS has various connectors to connect with external equipment. (See right gure) GPS connector D-SUB connector for NBDP/FSK RS-232C/NMEA connector for PC remote control Printer connector

SP-24E

RC-25GMDSS

To HF Antenna

To HF Antenna (For DSC reception)

AT-141 Antenna Tuner

Optional hand microphone, HM-135
The optional HM-135 can be assigned a P (programmable) button from which one of the radio functions such as tune, mode or scan can be selected. This function can then be remotely controlled from the microphone.

DSC ANT

Controller

AF/MOD

REMOTE

PRINTER

Other features
CW full break-in and semi break-in Scan resume, program scan and adjustable scan speed Max 160 programmable channels RF gain control

Speaker GPS

Parallel Printer Remote control with RS-232C or NMEA format

24V power supply

Position and time data (NMEA 0183)

Modem, NBDP, FAX system

SPECIFICATIONS

GENERAL

Frequency coverage (Unit : MHz): Receive 0.529.9999 (continuous) Transmit 1.62.9999, 4.04.9999, 6.06.9999, 8.08.9999, 12.013.9999, 16.017.9999, 18.019.9999, 22.022.9999, 25.027.5000 DSC 2.1875, 4.2075, 6.3120, 8.4145, 12.5770, 16.8045 Type of emission : J3E (USB/LSB*), J2B (AFSK), F1B (FSK, DSC), A1A* (CW), H3E* (AM)

* LSB, A1A, H3E modes are receive only

TRANSMITTER

Output power (at AT-141 output power) : 1.63.999MHz 85W PEP 4.027.500MHz 125W PEP Spurious emissions : 43dB below peak output power Carrier suppression : 40dB below peak output power Unwanted sideband : 55dB below peak output power
(With 1kHz AF input; at Max. power)

Microphone connector

: 8-pin connector (2.4k)

Number of channels

: 1205 (max.)
(160 programmable channels; 249 ITU SSB duplex; 124 ITU SSB simplex; 662 ITU FSK duplex; 10 Semi/auto channels)

RECEIVER

Sensitivity (at 20dB SINAD; emf) :
0.5 1.5999MHz 1.6 1.7999MHz 1.8 3.9999MHz 4.0 29.9999MHz J3E, A1A 30dBV 13dBV 8dBV J2B, F1B 13dBV 8dBV H3E 44dBV 30dBV 24dBV DSC 0dBV

(at 1% error rate)

Antenna impedance : 50 (SO-2392) Power supply requirement : 21.631.2V DC (oating ground) Current drain : Tx Max. power 30A Rx Max. audio Less than 3.0A Operating temp. range : 15C to +55C Frequency stability : 10Hz (Approx. 5 min. after power on) Dimensions (Projections are not included): Main unit 367(W)95(H)260(D)mm Controller (RC-25GMDSS) 220(W)110(H)84.4(D)mm Speaker (SP-24E) 110(W)110(H)84.4(D)mm Weight : Main unit 8.5kg Controller (RC-25GMDSS) 570g Speaker (SP-24E) 370g
Measurements made in accordance with EN300 373-1 and ENfor IC-M801GMDSS. All stated specications are subject to change without notice or obligation.
Spurious response rejection 0.529.9999MHz DSC 1st image Except 1st image Audio output power (at 24V DC) Clarity variable range Headphone connector Speaker connector Supplied accessories:
: More than 70dB More than 60dB More than 50dB : 4.0W typical at 10% distortion with a 4 load : 150Hz : 3-conductor 3.5 (d) mm (18") : 2-conductor 3.5 (d) mm (18") /4
5m Separation cable, OPC-1466 External speaker, SP-24E GPS plugs Mounting brackets Mounting angles Tuner plugs Spare fuses
Handset, HS-98 DC power cables

OPTIONS

AT-141 AUTOMATIC ANTENNA TUNER
Some options may not be available in some countries. Please ask your dealer for details.

DIMENSIONS

mm 84.;3
OPC-1465 SHIELDED CONTROL CABLE

MB-108 MOUNTING BRACKET

Matches the transceiver to a long wire antenna with little insertion loss. Antenna and control cable receptacles are easy to install.
10m shielded control cable connects between AT-141 and transceiver. Protects the transceiver from RF feedback.
Stainless steel one-action bracket. Transceiver main unit is easily attached or removed. The photo shows installation example.

MB-75 FLUSH MOUNT KIT

HM-135 HAND MICROPHONE

HS-98 HANDSET

110 mm; 41132
For mounting the controller, RC-25GMDSS or the SP-24E to a panel.
Remote function microphone equipped with channel and programmable buttons.
Provides clear audio reception. Same as supplied.
OPC-1575 SEPARATION CABLE
44-inch external speaker. Same as supplied. Input impedance: 4. Max. input power: 7W.
10m separation cable between controller and main unit.
5m speaker extension cable for use with SP-24E.
1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan Phone: +81 (06) 6793 5302

Fax: +81 (06) 6793 0013

URL: http://www.icom.co.jp/world/index.html

Count on us!

2380 116th Avenue NE, Bellevue, WA 98004, U.S.A. Phone : +1 (425) 454-8155 Fax : +1 (425) 454-1509 E-mail : sales@icomamerica.com URL : http://www.icomamerica.com
146A Harris Road, East Tamaki, Auckland, New Zealand Phone : +64 (09) Fax : +64 (09) E-mail : inquiries@icom.co.nz URL : http://www.icom.co.nz
Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K. Phone : +44 (01227) 741741 Fax : +44 (01227) 741742 E-mail : info@icomuk.co.uk URL : http://www.icomuk.co.uk
6F No. 68, Sec. 1 Cheng-Teh Road, Taipei, Taiwan, R.O.C. Phone : +886 (02) Fax : +886 (02) E-mail : sales@asia-icom.com URL : http://www.asia-icom.com
Your local distributor/dealer:
Glenwood Centre #150-6165 Highway 17, Delta, B.C., V4K 5B8, Canada Phone : +1 (604) 952-4266 Fax : +1 (604) 952-0090 E-mail : info@icomcanada.com URL : http://www.icomcanada.com
Communication Equipment Himmelgeister Str. 100, D-40225 Dsseldorf, Germany Phone : +49 (0211) 346047 Fax : +49 (0211) 333639 E-mail : info@icomeurope.com URL : http://www.icomeurope.com
Zac de la Plaine, 1, Rue Brindejonc des Moulinais BP 5804, 31505 Toulouse Cedex, France Phone : +33 (5) Fax : +33 (5) E-mail : icom@icom-france.com URL : http://www.icom-france.com
Unit 1 / 103 Garden Road, Clayton VIC 3168 Australia Phone : +61 (03) Fax : +61 (03) E-mail : sales@icom.net.au URL : http://www.icom.net.au
Ctra. Rubi, No. 88 "Edificio Can Castanyer" 08190, Sant Cugat del Valles, Barcelona, Spain Phone : +34 (93) 70 Fax : +34 (93) 46 E-mail : icom@icomspain.com URL : http://www.icomspain.com
Sopot, 3 maja 54, Poland Phone : +48 (58) Fax : +48 (58) E-mail : icompolska@icompolska.com.pl URL : http://www.icompolska.com.pl 06JSIcom Inc. Printed in Japan
OPC-1610 SPEAKER EXTENSION CABLE

RC-25GMDSS REMOTE CONTROLLER
Remote controller head. Same as supplied.

84.4 m

SP-24E EXTERNAL SPEAKER

95 mm ; 334