PRESIDENT MC 6800 DSC - Communication Radio

MC 6800 DSC - Communication Radio PRESIDENT - Free user manual and instructions

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BrandPRESIDENT
ModelMC 6800 DSC
Product TypeMarine VHF Communication Radio with DSC
Dimensions (L x H x D)180 x 50 x 230 mm
Weight1680 g
Power SupplyDC 12 V (10.8 - 15.6 V)
ConsumptionTransmit 5 A (25 W), Receive 0.3 A (standby), 0.9 A (max audio)
Frequency BandTransmit: 156.025 - 157.425 MHz, Receive: 156.300 - 162.025 MHz
Output Power25 W (Hi) / 1 W (Lo)
Number of Channels55 international channels (1-28, 60-88 simplex & semi-duplex)
Emission TypeVoice: 16K0F3E, DSC: 13K5G2B
Main FunctionsDigital Selective Calling (DSC), routine call, urgency, safety, group, distress alert, dual watch (DW), scan, memory scan, call register, MMSI directory (20 entries)
DisplayLCD with indicators (M, D, S, DW, FS, MS, Hi/Lo, TX, RX, Mu, Sq, VL)
Backlight4 adjustable brightness levels
NMEA InputNMEA0183 (position, date, time from GPS)
Antenna ConnectorPL259 (50 Ω)
Audio Output3.5 W (external speaker 8 Ω), 2 W (internal speaker)
Included AccessoriesBracket, microphone hanger, screws, washers
Maintenance and CleaningClean with a soft, dry cloth. Avoid solvents. Protect from moisture and extreme temperatures.
SafetyDo not expose to salt water. Install away from compasses (>1 m). Use a suitable 50 Ω antenna.
Spare Parts and ReparabilityContact an authorized dealer for MMSI replacement or repairs.
General InformationComplies with directive 1999/5/EC (R&TTE). DSC Class D. Marine use.

Frequently Asked Questions - MC 6800 DSC PRESIDENT

How to turn on the PRESIDENT MC 6800 DSC radio?
Press the POWER key. The radio automatically turns on to channel 16 with 25 W power. If it does not turn on, disconnect and reconnect the power and try again.
How to adjust the volume and squelch?
Use the Volume ▲/▼ keys for volume and Squelch ▲/▼ for squelch. Increase squelch until background noise disappears.
How to make a routine call?
Press CALL, select 'Routine', enter the destination MMSI, choose an active channel with ▲/▼, then press ENT to send the call. Wait for a response.
How to send a distress alert?
Remove the protection from the DIST button, select the nature of distress with ◀/▶ (fire, flooding, etc.), then press and hold DIST for about 5 seconds. The radio transmits the alert with your MMSI, position, and time.
How to use dual watch mode?
Select a channel, then press DW. The radio alternates between this channel and channel 16. To exit the mode, press DW or CLR.
How to program the MMSI?
Press MENU, select 'MMSI VIEW', enter your 9-digit number using the keypad, then press ENT twice to confirm. Note: The MMSI can only be entered once.
How to set the date and time manually?
Press MENU, select 'DATE/TIME', enter the date (DD/MM/YYYY) and UTC time (HH:MM) using the keypad, then press ENT.
What are the default active channels and how to modify them?
Channels 06, 08, 72 and 77 are fixed. Five others are programmable via MENU > 'CHANNELS' > 'INS' or 'DEL'. Consult local authorities for authorized channels.
How to add a contact to the directory?
Press MENU, select 'DIRECTORY', choose 'ADD', enter the name and MMSI using the keypad, then press ENT. Up to 20 entries.
How to connect an external GPS?
Connect the brown wire (NMEA OUT +) to the GPS and the blue wire (NMEA common -) to ground. The radio processes RMC, GGA, GLL, and ZDA sentences in version 2.0.

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USER MANUAL MC 6800 DSC PRESIDENT

Inter-modulation ≥65 dB

CHANNELS INS-5 20 01/00:30 S K Hi Mu
  1. INTRODUCTION 36
    2.FRONT PANEL DESCRIPTION 36
  2. LCD DISPLAY CHARACTERS 37
  3. FIST MIKE/CONTROLLER 38
    5.SENDING A CALL 39

  4. Routine Call 39

  5. Urgency Call and Safety Call 39
  6. Group Call 40
  7. Distress Alert 40

  8. RECEIVING A CALL 41

  9. Routine Call 41

  10. Urgency Call and Safety Call 41
  11. Group Call 42
  12. Distress Alert 42

  13. ADDITIONAL FUNCTIONS AND CONFIGURATION 42

  14. Call Log 42

  15. Set MMSI of the radio 43
  16. Set Group ID 43
  17. Set Date and Time 43
  18. Set Manual Position 44
  19. Set call channels 44
  20. Set called MMSI and vessels name 45

  21. TECHNICAL SPECIFICATIONS 46

  22. Receiver 46

  23. Channel 70 Monitor General specification 46
  24. Transmitter 46

  25. INSTALLATION 47

  26. The Set Installation 47

  27. Electrical Installation 47
  28. Antenna Installation Recommendations 48
  29. Interfacing via NMEA 49
  30. Accessories 49

10.INTERNATIONAL VHF MARINE CHANNEL CHART 66

1. INTRODUCTION

The MC 6800 DSC is a class D Digital Selective Calling (DSC) VHF marine radio.

It includes a VHF marine radio and a DSC controller in one set, therefore it is very convenient for use. The MC 6800 DSC support the latest GMDSS requirements for non-SOLAS vessels from the International Maritime Organization (IMO). It will enable you to make digitally selected calls, which are quicker and simpler to make then conventional voice calls using channel 16. Should distress situation occur, with the MC 6800 DSC you can quickly raise an alert, indicating your identity, your position and automatically establish distress communication on the emergency voice channel.

Groupe President Electronics operates a policy of continual development and reserves the right to alter and improve the specification of their products without notice.

2. FRONT PANEL DESCRIPTION

PRESIDENT MC 6800 DSC - FRONT PANEL DESCRIPTION - 1

1. Power switch button

Press the "POWER" button switch on the radio. The VHF starts up automatically on channel 16 at maximal power 25W. (If the radio could not be turned on for the first time after the power source connected, please disconnect the power source, then connect it and turn on the radio again.)

2. Microphone socket

3. Volume up/down ( /)

To increase the volume, Press the volume key. To reduce the volume, Press the volume key.

4. Squelch up/down ( /)

Those keys are used to adjust the receiver muting threshold (squelch) level. To cut noise or weaker signals by pressing the squelch key until the background interference noise disappears. To receive weaker signals, press squelch key.

5. Channel up/down (▲/▼)

Press the channel up key the channels go up. Press the channel down key, the channels go down.

6. LCD Display

7. Speaker

8. Clear (CLR)

Stop task and return to main screen.

9. Channel 16 (16)

It will automatically select channel 16 on high transmission power when pressed. Any function active (Dual watch, scanning etc.) will be cancelled.

10. and 12. Scan (SCN)/Memory scan (M.SCN)

This function scans through each channel sequentially until a signal above the squelch level set is detected. Once the signal ends or drops below the squelch level set, the radio will continue scanning. Press "SCN" or "M.SCN" to enter scan mode, the LCD will show "FS"(Full scan) or "MS"(Memory scan) on the bottom right of the LCD screen.

Note that the radio will not transmit, nor will alternate channels be able to be selected while in scan mode. To restore normal operation, either press "SCN" or "CLR" again. Press "16" the radio will restore normal operation and will select channel 16.

The memory scan operates in the same way as the scan, except that it will only scan channels that have been entered into the scan memory. If no channel has been entered into the memory then this function will not be available.

11. Dual watch (DW)

Dual watch enables the radio to scan between the selected channel and priority channel (CH16), To activate dual watch mode select the channel and press "DW" key, the "DW" legend will be displayed on the bottom right of the LCD.

Note that the radio will not transmit, nor will alternate channels be able to be selected while in dual watch mode. To restore normal operation, either press "DW", "CLR". Press "16" the radio will restore normal operation and will select channel 16.

13. Backlighting (DIM)

There are four steps of brightness levels. When power of the Radio is switched on, the backlighting is brightest.

The LCD backlighting is controlled by pressing "DIM" button.

14. RF High or Low Output Power (H/L)

This "H/L" button operates as a toggle switching between 1W and 25W.

When RF output power is set at 1W or 25W, the "Lo" or "Hi" symbol will show at bottom right of the LCD screen.

Note that some channels are restricted to 1W transmit power. The radio is programmed to switch to low power automatically when one of these channels is selected.

15. Channel Memory Function (M+)

The function of this key will add the currently selected channel into the scan memory. Press the "M+" key the LCD display will show "M" on the bottom right of the LCD display, indicating that the channel has been entered into the scan memory. Press the "M+" key again if the channel is already in the memory, the "M" will be deleted indicating that the channel is not a memory scan channels.

16. Distress call button with a safety guard

3. LCD DISPLAY CHARACTERS

The meaning of characters on the button right of the LCD display are as follows:

M Indicate the displayed channel is the memory-scanning channel

D Indicates the displayed channel is duplex channel

S Indicates the dis played channel is simplex channel

DW Indicates Dual watch scanning operation

FS Scans every channels of current channel list

MS Scans the memory channels
Hi Indicates the TX maximum output power is 25W
Lo Indicates the TX maximum output power is 1W
TX Indicates the Radio is in transmit
RX Indicates the Radio is in reception
Mu Appears when the squelch opens
Sq Squelch control is activated; the Bar indicates the level of the squelch signal
VL Volume control is activated, the Bar indicates the audio output level

The fist mike/controller have mike, PTT switch, Soft-keypad and distress Call button with the safety guard .The telephone style ITU keypad is used for entering numeric data. When required, the keys will automatically switch to character mode allowing letters, numbers and punctuation characters to be entered. Repeatedly pressing a key will cycle through the characters available on that key.

1 pressADGJMPTW0
2 presses,BEHKNQUX(
3 presses.CFILORVY)
4 presses/?!:,S&Z%
5 presses1234567890

The other keys are as follows:

MENU Select menu item.
ENT Confirm the action.
CLR Stop task and return to remain screen or return to the last screen.
CALL Selects Call item.
DIST Distress Call button with a safety guard.

/ Press it to raise or lower the working channel. And it can select the stored working channels.
/ Move the cursor position when setting. And it can view next or last message and select next or last item.

PRESIDENT MC 6800 DSC - LCD DISPLAY CHARACTERS - 1

Distress button cover

5.SENDING A CALL

Making a DSC call is very simple. First, choose the call type (Routine, Safety, Urgency, Group or Distress Alert). If required, enter the destination and working channel and then send the call by pushing "ENT". The digital signal will be sent out in under a second, containing the vessels ID and the call type.

To order for the Radio to function, your MMSI (Maritime Mobile Service Identifier) number will need to be entered. For the Group call, the group ID will need to be entered too.

1. Routine Call

To make a routine call, press "CALL" key on the fist mike/controller keypad to select Routine call .The screen is as below.

PRESIDENT MC 6800 DSC - Routine Call - 1

Then enter a called vessel's MMSI number with the keypad and select a working channel by pressing the or key on the keypad from the channel list.

Press "ENT" the Radio will send a routine call. Then the radio will change to following interface and waiting for a replay. When the reply is received, it will sound a tone and automatically set to the selected working channel. A voice call can then be made in the normal way.

PRESIDENT MC 6800 DSC - Routine Call - 2

2. Urgency Call and safety Call

Press "CALL" key on the fist mike/controller keypad to select safety call or urgency call as follow figure.

PRESIDENT MC 6800 DSC - Urgency Call and safety Call - 1

PRESIDENT MC 6800 DSC - Urgency Call and safety Call - 2

Both urgency and safety calls are all ships calls. You may use the or keys to select a different working channel when making safety call. Urgency calls always use channel 16. Press the "ENT" key, the figure is as follows.

SAFETY CALL SURE SEND?06
01/00:31S K Hi Mu
URGENCY CALL SURE SEND?06
01/00:31 S K Hi Mu

Press the "ENT" key again to make the call. When the call is sent, the radio will be set to the working channel. Allow a few seconds for the stations receiving the call to switch to the working channel. Then make a normal voice call on the selected working channel.

3. Group Call

If a group ID has been set up for the Radio. A call can be made to other members of the group.

Press the "CALL" key on the keypad to select the group call screen as follows.

GROUP CALL TO: 023456789 ON 0606
01/00:30 S I Hi Mu

Select a working channel from the channel list by pressing the or keys on the keypad. Press "ENT" to send the call, allow a few seconds for the other members of the group to reach the radios (all VHF radios in the group should automatically switch to the selected working channel upon acknowledgement), then make a normal voice call using the working channel.

4. Distress Alert

Turn away the protective cover and press "DIST" key on the fist mike or on radio. The Distress Alert screen will be displayed as follows.

DISTRESS ALM MAN OVERBOARD 22°30' S 114°20' E 12:30 UTC 01/00:30 S I Hi Mu

If time permits, press the or keys to select the nature of the distress. There are 10 categories recognized as Distress Alert situations. Which are - fire, flooding, collision, grounding, listing, sinking, adrift, abandoning, piracy and man overboard. There is also a default undesigned category, which is used if no category is selected here.

Press and hold the "DIST" key for about five seconds. An alarm will sound and a countdown to the transmission will be displayed.

The Distress Alert transmission contains the following data:

The vessel's MMSI;
- The vessel's position (either from the NMEA0183 input, or manually entered);
The time (from NMEA or manual);
The nature of the distress.

After the Distress Alert has been sent, the Radio will automatically tune to channel 16 and the Radio will repeat the Alert approximately every four minutes until either an acknowledgement

is received, or "CLR" is pressed (it is not recommended that the Distress Alert is cancelled manually by pressing "CLR" unless you are requested to do so by the rescue authorities).

While the Distress Alert remains active, an intermittent alarm will continue to sound about one time per 15s.

When an acknowledgement is received from the Rescue Co-ordination Center, this will cancel the Distress Alert transmission from the Radio and automatically switch the Radio to the required working channel. The subsequent Rescue Co-ordination will be performed using the voice working channel.

6. RECEIVING A CALL

When a DSC call is received, the radio will switch to the call log screen to display the details of the call and ring or sound the alarm depending on the nature of the call. The procedures that follow describe how to handle the types of calls that can be received.

1. Routine Call

When a Routine call is received, the screen will show the details of the call, which it is from and working channel as follows, and an alarm will sound.

PRESIDENT MC 6800 DSC - Routine Call - 1

Press the "ENT" key on the fist mike keypad, an acknowledgement will be sent to caller and the radio will be automatically switched to working channel for normal voice communication. The **will disappear when the call has been acknowledged..

When looking back at routine call logs, if there is a “” symbol on the screen, you can press directly “ENT” key to send an acknowledgement. After acknowledgement, the “” will disappear.

2. Urgency Call and Safety Call

The procedures for urgency and Safety calls are very similar, an urgency call will sound the distress alarm and switch the radio to Channel 16.

PRESIDENT MC 6800 DSC - Urgency Call and Safety Call - 1

A safety call will sound a normal ring and switch the radio to the specified working channel as follows.

PRESIDENT MC 6800 DSC - Urgency Call and Safety Call - 2

Press the "ENT" key to stop the ringing, and then listen for the voice message.

3. Group Call

When a Group call is received, the radio will sound a ringing and display the details of the call, indicating whom it is from and the working channel as follows.

GROUP CALL FM: 132456789 ON 0816
15/00:30 S K Hi Mu

Press "ENT" key to stop the ringing, then listen for the voice message or speak.

4. Distress Alert

If a Distress Alert or a Distress Relay is received from another vessel, an alarm will sound and the Radio will switch to channel 16, The screen will show the details of the Distress Alert or Distress Relay, the MMSI of the vessel, the nature of the distress, it's position and time, Mute the alarm by pressing "ENT" Key and maintain a listening watch on channel 16 for the distress message. Press "CLR" key to clear the display.

DISTRESS ALM FM: 123456789 MAN OVERBOARD 22°30' N 114°20' E 12:30 UTC 01/00:30 S K Hi Mu
ALERT RELAY FM: 112233445 ID: 123456789 22°30' N 114°20' E 12:30 UTC 01/00:30 S K Hi Mu16

7. ADDITIONAL FUNCTIONS AND CONFIGURATION

In order to access additional functions, Press "MENU" key of fist mike.

1. Call Log

The call log can be used to look back through the previous received call logs, the most recent call first.

Press "MENU" soft key to select the "LOG VIEW" screen. If there is no any message have been received, the screen will be as follows.

LOG VIEW : NO ITEM !!16
15/11:30S K Hi Mu

If a message has been received, the screen will be as follows:

19 CALL LOGS PRESS OR TO VIEW16
15/11:30 S K Hi Mu

The or soft key are used to move back and forward through the log. The bottom left of the screen shows the date time of receiving the call in dd/HH/mm as follows:

PRESIDENT MC 6800 DSC - Call Log - 1

Press "CLR" key to exit from the call log screen.

2. Set MMSI of the radio

In order for the Radio to function, your MMSI (Maritime Mobile Service Identifier) number will need to be entered.

Press "MENU" key to select the "MMSI VIEW" screen as follows and then press numeric soft key enter the MMSI numbers (9 numbers).

PRESIDENT MC 6800 DSC - Set MMSI of the radio - 1

This number can be obtained from your local radio communications authority. If a mistake is made, use the or key move back and edit the error. Then press ^ ENT" key, the Radio will ask for verification. It is important that the MMSI entered is checked carefully, as it can only be entered once!

Then press "ENT" once again to confirm the entered.

To change the MMSI number after it has been programmed the unit must be returned to an authorized dealer to erase the existing number.

3. Set Group ID

To enter a Group ID (if for example, the vessel is part of a flotilla or fishing fleet etc.), press "MENU" key to select the "GROUP ID" screen as follows:

PRESIDENT MC 6800 DSC - Set Group ID - 1

Use the keypad to enter the Group ID and press "ENT" to accept, Pspress "CLR" key to exit to the main screen. Note that the first number must be "0".

4. Set Date and Time

Normally, the date and time is supplied by the NMEA0183 navigational input (from a GPS etc). If a navigator is not connected, or the signal has been lost, the missing data can be manually entered here.

Press "MENU" to select "DATE/TIME" screen as follows, Use the keypad to enter date and time. Press "ENT" key to accept the date and time.

DATE/TIME DD/MM/YYYY 01/01/0000 HH:MM 00:01 01/00:01 S K Hi Mu

Note that the time should be UTC (GMT) and entered in 24 hours clock format.

5. Set Manual Position

If the position of the vessel cannot be obtained from a navigator via the NMEA0183 input, this date can be entered manually. Press "MENU" key to select the "POSITION/UTC" screen as follows, and then use the keypad to enter the required data as follows.

POSITION/UTC 99°99'S 999°99"W 88:88 UTC16
01/00:30 S K Hi Mu

Press "ENT" key to accept the position and time entered.

If no data is being received from the NMEA input, a "!" symbol will appear on the main screen, and will flash 4 hours later after the last position was input and prompt the operator to enter the current position. After 23 hours, if the radio has not received any position data either manually or from the UMEA input, then the position data will disappear from the screen, and it will show "NO POSITION" if a Distress Alert is transmitted.

6. Set call channels

The Radio includes a list of 9 working channels, which can be scrolled through when using the Routine, Safety or Group Calling. The first four channels are preset as 06, 08, 72 and 77. These cannot be amended. The remaining five channels are programmable. Press "MENU" key to select "CHANNELS" screen ssas follows.

CHANNELS INS DEL16
01/00:30 S K Hi Mu

Always consult your local authority requirements when choosing suitable working channels. Be aware of which channels are Duplex and will not allow ship to ship communication. Use or key to select inserting or deleting channel screen, then press "ENT" key for enter. The "CHANNELS-INS" screen is as follows (insert the 5th channel):

CHANNELS INS-5 20
01/00:30SK Hi Mu

Press or key to change the selected channel, and press "ENT" key for acceptance. Then press or keys to enter next channel. Press "CLR" key to return to the main screen. If want to delete a channel, press "MENU", or and "ENT" keys again to select "MENUDEL" screen as follows:

CHANNELS DEL-7 67 1616
01/00:30 S K Hi Mu

Press or key to select channel (the 5th « the 9th) that is wanted to be deleted, then press "ENT" key for confirmation.

7. Set called MMSI and vessels name

The Directory screen is used to add, edit and delete entries from a list of up to 20 stored MMSI numbers, which can be recalled in the Routine call screen.

To access the directory function, press menu in the main "DIRECTORY" screen as follows.

DIRECTORY EDIT DEL ▲ ADD16
01/00:30 S K Hi Mu

To create a new entry, press or keys to move symbol nearby "ADD", then press "ENT" key to enter Directory-add screen as follows.

DIRECTORY ADD-416
0000000001/00:30 S K Hi Mu

Use the keypad to enter a name and number, and use the keys to move backwards and forwards along the line.

When the name and number have been entered, press "ENT" to enter the name and MMSI. To edit an existing entry, press or key to move symbol on the screen nearby "EDIT", then press "ENT" key to enter Directory-edit screen as follows.

DIRECTORY EDIT-1 SIMDN 123456798 01/00:30 S K Hi Mu

Use the or key to select the number of the entry, then press "ENT" key.

Use the or key to move along the name and MMSI fields, using the keypad to edit the date. Press "ENT" to store the modified entry.

To delete an entry, press or key to move symbol on the screen nearby "DEL", then

press "ENT" key to enter Directory-DEL screen as follows.

Use the or key to select the number of the entry, the press "ENT" key to delete the entry.

8. TECHNICAL SPECIFICATIONS

Power supply

DC 12 V +30/-10%

Channel capability

55 international channels

1~28, 60~88 simplex & semi-duplex

Frequency Resolution

25 KHz

Method of frequency generation

synthesizer

Dimension

180(W) x 50(H) x 230(D) mm

Weight

1680 g

1. Receiver

Multi Channel Receiver

The receiver incorporates a dual conversion super-heterodyne design.

Tuning frequency range

156.300-162.025 MHz

IF frequency used:

21.4 MHz; 455 KHz

Maximum useable sensitivity

≤ 6 dBu e.m.f. of 20 dB/SINAD

Adjacent Channel selectivity

≥70 dB

Inter-modulation Rejection

≥68 dB

Current:

0.9 A (Max Audio)

Audio Frequency Response

0.3 A (STBY)

Hum and Noise

+1, -3 dB of +6 dB/octave

Audio output

De-emphasis 300-3000 Hz

≤40 dB

3.5 W at less than 10% distortion

with 8 Ohm external speaker

2 W only internal speaker

2. Channel 70 Monitor General specification

Frequency

CH70 (156.525 MHz)

Sensitivity

≤ 0 dBμ e.m.f. for 20 dB/SINAD

Band width

16 KHz

First IF frequency used

17.9 MHz

Second IF frequency used

455 KHz

Adjacent Channel Selectivity

≥70 dB

Inter-modulation Rejection

≥65 dB

Mode of Reception

16K0G2B

3. Transmitter

Type of emission

16K0F3E(Voice)

13K5G2B(DSC)

Frequency range

156.025 - 157.425 MHz

Output power

25 W, 1 W into 50 Ohms

Audio Harmonic Distortion

≤10%

Audio Frequency Response

+/-3 dB of +6 dB/octave

Hum and Noise

Pre-emphasis 300 - 3000 Hz

Frequency Deviation

≤-40 dB

Spurious Emissions (Radiated)

5 KHz max peak

Current

≤ 0.25 W

5 A (25 W)

9. INSTALLATION

1. The Set Installation

The radio should be sited so that engine noise and vibration or other background noise does not make it difficult for the operator to hear.

It is recommended that it is not installed where it will be exposed to continuous direct sunlight, as this will eventually damage the LCD display.

As microphones and loudspeakers contain powerful magnets, the radio should not be installed within 1m (3ft 3in) of any compasses, whether magnetic or electronic.

The fins on the back of the case act as a heat sink to dissipate heat generated by the set when in use, which maintains the high efficiency of the radio. The free circulation of air is essential - if mounting the radio in an enclosed space ensure that the space is vented.

The MC 6800 DSC Radio is supplied with a reversible mounting bracket. This can be used to mount the radio on the chart table or on an overhead bulkhead (Fig A). The bracket is fixed in place using four screws (supplied). Before installing, ensure that there is at least 88mm(3.5 in) verticals clearance and 127mm (5in) horizontal clearance behind the bracket to allow the radio to fit (Fig B). The rake angle of the radio can be adjusted by slackening the clamp.

Desktop mounting Overhead mounting

PRESIDENT MC 6800 DSC - The Set Installation - 1

PRESIDENT MC 6800 DSC - The Set Installation - 2
Fig A

PRESIDENT MC 6800 DSC - The Set Installation - 3
Fig B

PRESIDENT MC 6800 DSC - The Set Installation - 4
Mounting on dashboard
Fig C

2. Electrical Installation

The MC 6800 DSC Radio has four electrical connections – the handset/fistmike socket is on bottom right of the front panel. On the bottom right of the back of the case there are three flying leads – the first is DC power cord (the red wire is positive, black is negative.), the second is speaker cord (the black wire is ground), the final is the GPS interface cord (the Brown wire is Ground).

PRESIDENT MC 6800 DSC - Electrical Installation - 1
Fig D

PRESIDENT MC 6800 DSC - Electrical Installation - 2
Fig E

The MC 6800 DSC requires a 12v DC supply to operate, This lead should be connected to the vessel's power supply, keeping the cable runs as short as possible. Although the radio draws very little current when receiving, a heavier current is drawn when transmitting which may result in a voltage drop if very long cable runs are used of inadequate core diameter. If the supplied power lead is not long enough, an extension of up to 3m(10ft) can be made using at least 2.5mm (13AWG) wire.

The chassis of the Radio is not connected to either supply rail. This allows a direct connection to the ship's earth connection for voltage and RF interface protection. The red wire is positive and black is negative. If polarity is accidentally reversed, the set will not operate.

The antenna is connected to the radio using a standard PL259 type connector as fitted to most marine antennae. If fitting to an existing antenna, check that the contacts are not corroded before connecting, as this will affect the quality of the signal, Ensure that the retaining collar of the antenna plug is securely tightened to prevent accidental disconnection.

3. Antenna Installation Recommendations

The most important factor in the performance of the MC 6800 DSC radio will be the quality and positioning of the antenna. Most recorded problems with VHF radios are related to poor antenna siting, faulty cabling, poor quality cable joints and low voltage supply. Therefore, if replacing an existing if installation, it is important that these factors are checked when installing the radio.

As the range of VHF signals are governed by line of sight, the antenna should be placed as high as possible, while remaining clear of any metallic objects that could influence the radiation of the antenna.

The most popular antennae for marine use are 1m(3ft 3in) long. On sail boats these are usually mounted on the masthead, where the length of the antenna keeps it clear from the navigation lights and wind vanes etc. This type of antenna can also be mounted on the cockpit roof or garage of powerboats.

Longer whip antennae are recommended for larger boats. These radiate the same total power as smaller antennae, but concentrate it into a narrower beam, which is advantageous on a tall mast at extreme range where concentrating the available power into a narrow horizontal beam becomes more important. However, if the antenna is mot vertical when transmitting, the beam will be angled either too high or too low (Fig G). Here the wider beam of the shorter antenna will be more universally effective, although the signal will be weaker (Fig F):

PRESIDENT MC 6800 DSC - Antenna Installation Recommendations - 1
Fig F

PRESIDENT MC 6800 DSC - Antenna Installation Recommendations - 2
Fig G

Therefore vessels with a large heel angle (small sailboats) would be better choosing a short masthead antenna. Your local agent should be able to provide specific advice on antenna choice for the vessel it is to be fitted to.

The antenna coaxial cable and any connectors used must be rated at 50_1^1 . Under no circumstances should standard domestic TV cable and connectors be used. Incorrectly rated cables and connectors could result in power not reaching the antenna, but also power could be reflected back into the radio, damaging it in the process.

4. Interfacing via NMEA

The MC 6800 DSC Radio incorporates an internal NMEA0183 processor which is used to provide position, date and time data from an external navigator – ideally a GPS.

The Radio can process NMEA0183 version 2.0 sentences RMC, GGA, GLL and ZDA, either of which will provide the necessary data.

Brown : NMEA Data OUT (+)

  1. Mounting Bracket 1 5. Mounting Screws 2
  2. Microphone hanger 1 6. Mic hanger Screws 2
  3. Rubber washers 2 7. Flat washers 2
  4. Mounting Bracket Knobs 2 8. Spring washer 2

PRESIDENT MC 6800 DSC - Interfacing via NMEA - 1

INHALTSANGABE

  1. EINLEITUNG 51
    2.BEDIENFELD 51
  2. ZEICHEN DER LCD-ANZEIGE 52
  3. HAND-MIKROFON/TASTENFELD 53
  4. SENDEN 54

  5. "Routine Call" 54

  6. "Urgency Call and Safety Call" 54
  7. "Group Call" 55
  8. "Distress Alert" 55

  9. EMPFANGEN 56

  10. "Routine Call" 56

  11. "Urgency Call and Safety Call" 56
  12. "Group Call" 57
  13. "Distress Alert" 57

7.ZUSATZLICHE FUNKTIONEN UND KONFIGURATIONEN 57

2. "Urgency Call and Safety Call"

2. "Urgency Call and Safety Call"

6. Set call channels

ChannelTransmitter FrequencyReceiver FrequencyMode S/DChannel AssignmentFunction
Ship To ShipShip To Shore
1156.050160.650DPublic Correspondence, Port OperationYESYES
2156.100160.700DPublic Correspondence, Port OperationYESYES
3156.150160.750DPublic Correspondence, Port OperationYESYES
4156.200160.800DPublic Correspondence, Port OperationYESYES
5156.250160.850DPublic CorrespondenceYESYES
6156.300156.300SSafety (Compulsory)YESNO
7156.350160.950DPort Correspondence, Port OperationYESYES
8156.400156.400SCommercial, inter-shipYESNO
9156.450156.450SCommercial/Non-CommercialYESYES
10156.500156.500SCommercialYESYES
11156.550156.550SCommercial, VTSYESYES
12156.600156.600SPort Operation, VTSNOYES
13156.650156.650SBridge to Bridge,(1W) navigationalYESYES
14156.700156.700SPort Operation, VTSYESYES
15156.750156.750SRecv Only-Coast to ShipYESYES
16156.800156.800SCalling&Safety, CompulsoryYESYES
17156.850156.850SState Controlled Ship to Coast (1W)YESYES
18156.900161.500DPort OperationYESYES
19156.950161.550DPort OperationNOYES
20157.000161.600DPort OperationNOYES
21157.050161.650DPublic CorrespondenceNOYES
22157.100161.700DPublic CorrespondenceNOYES
23157.150161.750DPublic CorrespondenceNOYES
24157.200161.800DPublic Correspondence
25157.250161.850DPublic Correspondence
26157.300161.900DPort Operation,VTS
27157.350161.950DPublic Correspondence, Port Operation
28157.400162.000DPublic Correspondence, Port Operation
60156.025160.625DPublic Correspondence, Port Operation
61156.075160.675DPublic Correspondence, Port Operation
62156.125160.725DPublic Correspondence, Port Operation
63156.175160.775DPublic Correspondence, Port Operation
64156.225160.825DPublic Correspondence, Port Operation
65156.275160.875DPublic Correspondence, Port Operation, VTSYESYES
66156.325160.925DPublic Correspondence, Port OperationYESYES
67156.375156.375SNon-Commercial, VTSYESNO
68156.425156.425SNon-CommercialYESYES
69156.475156.475SNon-CommercialYESYES
70156.525SDSC Distress, urgency, safety and callingYESNO
71156.575156.575SIntership, Port Operation, on CommercialYESYES
72156.625156.625SNon-CommercialYESNO
73156.675156.675SPort Operation, VTSYESYES
74156.725156.725SPort Operation, VTSYESYES
77156.875156.875SIntership, Port OperationYESNO
78156.925161.525DPort Operation, Public CorrespondenceYESYES
79156.975161.575DPort Operation, Public CorrespondenceYESYES
80157.025161.625DPort Operation, Public CorrespondenceYESYES
81157.075161.675DPort Operation, Public CorrespondenceYESYES
82157.125161.725DPort Operation, Public CorrespondenceYESYES
83157.175161.775DPort Operation, Public CorrespondenceYESYES
84157.225161.825DPublic CorrespondenceYESYES
85157.275161.875DPublic CorrespondenceNOYES
86157.325161.925DPublic CorrespondenceNOYES
87157.375161.975DPublic CorrespondenceNOYES
88157.425162.025DPort Operation, Public CorrespondenceNOYES

Déclaration DE CONFORMITE DECLARATION DE CONFORMIDAD CERTIFICATE OF CONFORMITY KONFORMITÄTSERKLÄRUNG

Nous, GROUPE PRESIDENT ELECTRONICS, Route de Sète, BP 100 - 34540 Balaruc - FRANCE,

Nosotros, GROUPE PRESIDENT ELECTRONICS, Route de Sète, BP 100 - 34540 Balaruc - FRANCIA,

We, GROUPE PRESIDENT ELECTRONICS, Route de Sète, BP 100 - 34540 Balaruc - FRANCE,

Wir, GROUPE PRESIDENT ELECTRONICS, Route de Sète, BP 100 - 34540 Balaruc - FRANCE,

is in conformity with the essential requirements of the Directive 1999/5/CE (Article 3) adapted to the national law, as well as with the following European Standards:

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Product information

Brand : PRESIDENT

Model : MC 6800 DSC

Category : Communication Radio