Back MARINE VHF RADIOTELEPHONE FM-2721
Your Local Agent/Dealer 9-52 Ashihara-cho, Nishinomiya, Japan Telephone : 0798-65-2111 Telefax : 0798-65-4200 All rights reserved. Printed in Japan FIRST EDITION : MAR. 2000 E PUB.No. OME-56163 ( HIMA ) FM-2721 : FEB.
DISTRESS Call Procedure 5. When you receive the distress acknowledgement call, you are automatically connected to CH16. Hook off the handset if it is not already off hook. Press the PTT switch and say: a) MAYDAY three times. b) This is [name of your vessel]. c) MAYDAY d) This is [name of your vessel]. e) Position f) Nature of Distress g) Kind of assistance needed h) Number of crew i) Other info such as description of your vessel j) Over.
Receiving Distress Alert from Other Ship General When the FM-2721 receives a distress alert from other vessel the LED (Red) lights and the FM-2721 sounds the distress alarm. 1. Silence the alarm by pressing the [Cancel] key (or wait for two minutes). 2. Press the [Log] key to show the Sel. Log file menu. 3. Select Rcvd. DISTRESS, and then press the [Enter] key to view the contents of the distress message. 4. Wait up to three minutes until the DIST ACK signal from a coast station is received. 5.
Should I transmit DIST ACK by voice or not? Distress alert received. Press the [Cancel] key to silence alarm. Read DISTRESS message. Acknowledge received from coast station? (Wait 3 mins.) Yes Press the [Cancel] key to silence alarm. Successively to check receive message contents. No Is your vessel near vessel in distress? No Yes If you can assist the vessel in distress, transmit acknowledge by voice to vessel in distress on CH 16. 1. Say "MAYDAY" ... Once 2. Say ID number of vessel in distress ...
SAFETY INSTRUCTIONS For the operator CAUTION CAUTION Do not open the equipment. Handle the handset carefully. Only qualified personal should work inside the equipment. Rough handling may affect its watertight integrity. Do not disassemble or modify the equipment. Fire, electrical shock or serious injury can result. Turn off the power immediately if waterleaks into the equipment or the equip-ment is emmitting smoke or fire. Continued use of the equipment can cause fire or electrical shock.
For the installer WARNING WARNING ELECTRICAL SHOCK HAZARD Be sure that the power supply is compatible with the voltage rating of the equipment. Do not open the equipment unless totally familiar with electrical circuits and service manual. Connection of an incorrect power supply can cause fire or equipment damage. The voltage rating of the equipment appears on the label above the power connector. Only qualified personnel should work inside the equipment.
Table of Contents DISTRESS Call Procedure................................ i 3.5 Selecting Channel ............................................. 15 3.6 Adjusting Squelch .............................................. 15 Receiving Distress Alert from Other Ship...... ii 3.7 Adjusting Loudspeaker Volume ......................... 16 3.8 Muting the Loudspeaker .................................... 16 SAFETY INSTRUCTIONS................................ iv 3.9 Setting Transmitter Power ........................
4.9 Manual Entry of Position and Time.................... 28 PRIVATE CHANNELS (NORDIC)............................ 47 4.10 Storing IDs ...................................................... 29 PRIVATE CHANNELS (NETHERLANDS-INLAND). 47 4.11 Storing Telephone Numbers ............................ 30 General Notes on Operating Marine VHF......48 4.12 Storing Messages ........................................... 31 Rules and Manners ................................................. 48 4.13 Message Log.....
(150M-W2VN) VHF & CH70 RX ANT CH70 RX ANT (OPTION) (5D-2V) (OPTION) (5D-2V) (150M-W2VN) System Configuration 12V DC GROUND SPEAKER + - 12VDC ANT (OPTION) SPKR (SEM-21Q) REMOTE 1 5m (HS-2721) (RB-2721A) REMOTE 2 CH70 RX ANT IEC61162-1(NMEA) MAX 50m (OPTION) (HS-2721) TRANSCEIVER UNIT FM-2721 GGA,RMC,GLL,ZDA (RB-2721B) (IEC61162-1) NAV device DISTRESS POWER REMOTE HANDSET A REMOTE HANDSET B (OPTION) viii
Equipment Lists Standard Supply Name Type Code No.
Optional Supply (cont.) Name Code No.
Introduction A Word to the Owner of the FM-2721 Congratulations on your choice of the FURUNO FM-2721 Marine VHF Radiotelephone. We are confident that you will enjoy many years of trouble-free operation with this fine piece of equipment. For more than 50 years FURUNO Electric Company has enjoyed an enviable reputation for quality and reliability throughout the world. This dedication is furthered by our extensive global network of agents and dealers.
Features • • • • • 25 W radiotelephone with control in palm Intercom facility Compact transceiver unit allows installation where space is limited • ATIS (Automatic Transmitter Identification System) mode enables use of the radiotelephone on inland waterways, also use with the class D DSC (ID registrations required). • “Dual watch” monitors CH16 while watching on another channel.
1. Installation 1.1 Mounting Standard Steering Transceiver unit 0.95 m 0.65 m Handset and Bracket 2.05 m 1.40 m Loudspeaker (option) 2.20 m 1.50 m Transceiver unit The transceiver unit can be mounted on the overhead, a desktop or on a bulkhead. Select the mounting location considering the following: • • • It is recommended to install the equipment in the cabin so as to avoid spray.
bulkhead, and screw slots of the unit. Then fasten upper screws and washers.
Handset (Hanger) The length of the hanger cable is 5 m (optional HS-2721/RB-2721B: 50 m), so locate the handset hanger within 5 m of the transceiver unit. (77) 65 22 42 145+0.5 208 12 Cable entrance hole 57 2- 4.5 Fixing hole Remove six screws to remove the hanger cover, and fasten the hanger with two tapping screws (supplied) on the desktop or bulkhead. Note: The magnet inside the hanger may pull the screwdriver when mounting the hanger.
Antenna Connection (option) Provide a location as high and clear as possible, free from the influence of nearby antenna, rigging and masts. However, any good quality antenna, complying with the following requirements, may be arranged locally. A high-gain antenna is preferable. If you are not sure, consult with your dealer.
1.2 Transceiver Connections HS-2721 RB-2721A ANT Connect the optional antenna. CH70 RX ANT Connect the optional CH70 RX antenna. Ground Transceiver Unit FM-2721 SPKR Connect the optional loudspeaker. 12 VDC ANT SPKR REMOTE 1 REMOTE 2 Remote 1 Connect the handset bracket. CH70 RX ANT IEC61162-1(NMEA) IEC61162-1 (NMEA) Connect the navigator. 12VDC Connect the power cable (05S0388, option). Ship's mains Remote 2 Connect the optional handset bracket.
Power Connection Connect the power cable to the connector attached at the rear of the transceiver unit. The RED wire and the BLACK wires, with inline fuses (10A), connect the transceiver unit to the ship’s 12 VDC power supply. Note:The power cable supplied is 3 meters in length; however it could be shortened as much as possible to prevent power loss. Remote1, 2 Connect the 10P cable (supplied) here.
Lay the coaxial cable and attach an M-type plug (if necessary) to the cable as right. 1. Remove the sheath by 30 mm. 2. Bare 23 mm of the center conductor. Trim braided shield by 5 mm and tin. 30 mm Sheath 5 mm 2 mm 3. Slide coupling ring onto cable. 4. Screw the plug assembly on the cable. Conductor 5. Solder plug assembly to braided shield through solder holes. Solder contact sleeve to conductor. 6. Screw coupling ring into plug assembly. Braided shield Plug assembly Insulator Contact sleeve 7.
CH70 RX ANT Connect the optional CH70 RX antenna kit. For detail, ask your dealer. SPKR Connect the optional loudspeaker here. IEC61162-1 (NMEA) Connects navigator here. The FM-2721 can input/output the following sentences in NMEA/IEC61162-1 format. Use the 17JE-23090 connector (option) and interconnection cable type EV-SA7/0.16TAx2P (local supply).
1.3 Handset Connection Take appropriate measures to ensure water does not leak through hole in bulkhead made for handset cable. 10P cable between the hanger and transceiver unit 10P cable (supplied, 5 m) should be fabricated as below. GRN/ BLU/ ORG/ YEL/ BRW RED ORG YEL WHT WHT WHT BLK 80 Anticorrosive Sheath Push the appropriate switch down to insert/pull out the cable. 6 Connect to the appropriate terminal block in the hanger. Connect to the terminal block #16 in the hanger.
2. Controls 2.
Control, LED description [Scan] key: Starts/stops scanning. Press this key over one second. POWER switch (in hanger): Turns the system on/off. DISTRESS button (in hanger): Sends the distress alert when pressed more than three seconds. [H/L key]: Alternately selects transmitter output power of 1 W or 25 W. Press this key over one second. Alarm LED: Lights when a DSC call is received. (The alarm sounds also when a DSC call is received.) [ ] key: Adjusts LCD contrast and panel backlighting.
Indications Off hook state Channel Mode (INTL, USA, WX, AT I S * o r P R I V ) T x ( Tra n s m i t ) o r R x ( R e c e i ve ) Scan (scanning) or DW ( D u a l Wa t c h ) D i s a p p e a r e d n o r m a l l y. C h a n n e l D i s p l ay ( S i m p l ex o r D u p l ex ) INTL SIMP Rx SCAN VOL:08 WatchVHF Tra n s m i t t e r Powe r (1W or 25W) 25W 16 SQ:03 CH70 L o u d s p e a ke r vo l u m e setting (MUTE appears w h e n l o u d s p e a ke r i s o f f. ) C H n o.
On hook state Channel Mode (INTL, USA, WX, AT I S * o r P R I V ) R x ( r e c e i ve ) a n d C H n o. Lat/lon, and UTC (only when GPS is connected. If not, hy p h e n a p p e a r e s. ) C h a n n e l D i s p l ay (SIMP or DUP) Tra n s m i t t e r Powe r (1W or 25W) INTL SIMP 25W Rx 16 Lat: 45.23 N Lon:121.88 E Time:10:57UTC VOL:08 SQ:03 WatchVHF CH70 L o u d s p e a ke r vo l u m e setting (MUTE appears w h e n l o u d s p e a ke r i s o f f.
3. VHF Telephone Operation 3.1 Turning the Power On/Off 3.3 Adjusting the Dimmer, Contrast To turn on the FM-2721 press the [POWER] switch in the hanger. The illumination LED in the [POWER] switch lights. Press the switch again to turn off the power. 1. Press the [ ] key over one second to show the display for adjustment of dimmer. INTL Rx SCAN 3.2 Listening for Telephony Calls SIMP 25W 16 Dimmer:03 WatchVHF CH70 International rules require that all ships monitor channel 16 continuously.
Setting channel 16 3.4 Selecting USA, INT, WX Channel 2. Press the [CH16] key. Press the [CH /INT/USA] key over three seconds to show INTL, USA, WX or ATIS (for inland waterways) at the top of the display. Mode sequence is depending on the initial setting. Please ask your dealer. (Only the international mode is available at the shipment.) 3.6 Adjusting Squelch The squelch can be adjusted automatically or manually. Automatic squelch adjustment 3.
manual. 3.7 Adjusting Loudspeaker Volume 2. To change the transmitter power, press the [H/L] key over one second to show 1W or 25W on the display. The loudspeaker can be adjusted by pressing [ ] or [ ] adjust volume. The setting range is 00-10, with three sub-levels between each main levels. Each pressing of [ ] or [ ] key changes the volume, however the volume indication changes only when reaching a next whole number.
3.11 Making a Telephone Call 3.12 Dual Watch (except ATIS mode) 1. Select channel 16 or another channel specified or agreed upon. The dual watch mode allows you to monitor CH16 and another channel. To activate the Dual Watch set the squelch and then do the following: 2. Hook off the handset. 1. Select a channel. 3. Press the PTT switch and say a) Called station name 3 times b) This is [your station name] 3 times c) Over 2. Press the [DW] key over one second.
3.14 Intercom 3.15 Keyboard Lock The intercom facility enables communication between two handsets on board your ship. Some keys can be locked to avoid accidental channel changes during telephone operation. When the keyboard is locked the only functions which can be operated are [CH16] and [DISTRESS] keys. 1. Press the [IntC] key over one second to turn the intercom on. The indication Intercom appears at the bottom of the display when the intercom facility is on.
4. DSC Operation Distress button pressed!! Nature: UNDESIGNATED KEEP PRESSED FOR 3SEC. This chapter shows you how to set up and send DSC calls. For each type of call the display shows the message “XXX call in progress” (XXX = name of call) while the call is being sent. If, when preparing a DSC call, no data is entered for five seconds, the equipment reverts to standby. After 3 seconds Distress call in progress Nature: UNDESIGNATED Position:12:34 12.34.E123.45N 4.
Do nothing until you receive the distress acknowledge call. If the call is not acknowledged, this sequence is repeated. The distress call can be canceled by using the [Cancel] key. 4.2 Distress Call by [Call] Key This method of sending the distress call allows you to specify nature of distress. 1. Press the [Call] key to show the Call type menu. Wait for ack. Auto re-Xmit DISTRESS CALL Nature: UNDESIGNATED Pos.
4. Scroll the display with [ ] or [ ] to select appropriate nature of distress among Undesignated, Fire, Flooding, Collision, Grounding, Listing, Sinking, Abandoning, Piracy, and Man Overboard. Manual input Key in Ship ID with the numeric keys and press the [Enter] key. Send message Call type: SHIP CALL Ship ID: 5. Press the [Enter] key to send the distress call. 6. Follow from step 4 in “Distress Call by DISTRESS Button” on page 19. Com channel: 06 Manual entry 4.
4. Press the [Enter] key to open the Com channel menu. 06 08 10 13 09 72 Com 73 69 67 77 15 17 4.4 Sending DSC Call to a Coast Station channel No INFO To send a DSC call to a coast station, do the following: 1. Press the [Call] key to open the Call type menu. MANUAL Call type COAST CALL SHIP CALL PSTN CALL GROUP CALL ALL SHIPS CALL DISTRESS CALL CH Busy NO INFO: Receiving station sets channel. MANUAL: Enter channel w i t h n u m e r i c k e y.
Manual input Key in Coast ID with the numeric keys and press the [Enter] key. 4.5 Sending PSTN Call to a Shore Station To connect to a office or home via a PSTN (Public Switched Telephone Network), do the following: Automatic input Press the [File] key to show the “Addr. Sel.” file. Scroll the display with [ ] or [ ] to select the registered coast station name which you desire and press the [Enter] key. 1. Press the [Call] key to open the Call type menu.
Send message Call type: PSTN CALL Coast ID: 00 Send message Call type: PSTN CALL Coast ID: 00 Tel No.: Manual entry Manual entry Addr. sel. 01:TOKYO COAST 02:KOBE Tel. No. sel. 01:FURUNO OFFICE 02:HOME COAST 03: 03:Dealer Automatic entry from Addr. sel. file Automatic entry through Tel. No. sel. file Manual input Key in telephone number with the numeric keys and press the [Enter] key. Automatic input Press the [File] key.
Send message Call type: GROUP CALL Groupe ID: 00 Com channel: 06 Manual entry 4.6 Sending a Group DSC Call To send a group DSC call, do the following: 1. Press the [Call] key to open the Call type menu. Call type COAST CALL SHIP CALL PSTN CALL GROUP CALL ALL SHIPS CALL DISTRESS CALL Addr. sel. 01:GROUP1 02:GROUP2 03:GROUP3 2. Scroll the display with [ ] and [ ] to choose GROUP CALL and press the [Enter] key. Automatic entry through Addr. sel. file 3.
06 08 10 13 09 72 Com channel 73 No INFO 69 67 MANUAL 77 15 CH Busy 17 4.7 When an urgent but not life threatening situation arises on your ship, for example, engine trouble, send an all ships call to request assistance. 1. Press the [Call] key to open the Call type menu. NO INFO: Receiving station sets channel. MANUAL: Enter channel w i t h n u m e r i c k e y. "CH BUSY" means the selected c h a n n e l i s bu s y n o w.
16 12 14 11 13 68 2. Press the [Cancel] key to silence the beep. Com channel 71 No INFO 74 69 MANUAL 79 80 CH Busy RCVD. MESSAGE SHIP ROUTINE NMSI123456789 SIMPLEX TP:12 Err. check:OK ANSWER DEL NO INFO: Receiving station sets channel. MANUAL: Enter channel w i t h n u m e r i c k e y. "CH BUSY" means the selected c h a n n e l i s bu s y n o w. Sending station ID Designated channel 3. Select ANSWER and press the [Enter] key.
4.9 5. Press the [ ] key to clear digits. Each pressing crears a digit from the right. Manual Entry of Position and Time Position and time data are required when sending a distress alert call, either automatically by a navigation device or manually through the keyboard. If there is no navigation device or the navigation device fails enter position and time manually as follows: Position Input:MANUAL Lat : ˚ Lon :123˚45 E Time:12:34UTC Unable rcv. new data. 1.
9. Enter UTC time with the numeric keys same as latitude entering and press the [Enter] key. The display shows position and time. 03:Addr.entry 03: 10. Press the [Enter] key. Address: Station type: SHIP 4. Enter file name (max. 20 characters) with the alphanumeric keys and press the [Enter] key. For entry of alphabet or symbol. Every pressing of [1] key changes the symbol mark. The symbol mark sequence is as shown below. 4.
Station type 2. Press [ ] to select Tel. NO. entry and press the [Enter] key. COAST SHIP GROUP TEl. No. Entry 01:FURUNO OFFICE 02:HOME 7. Select station type desired and press the [Enter] key. For example, select COAST. 03: 03:Addr.entry 03:FURUNO Station 3. Press the [ ] or [ ] to select vacant number and press the [Enter] key. type: COAST Tel. 03: Address: 00 Tel 8. Enter ID number (Group ID, 8 digits; Coast ID, 7 digits, Ship ID, 9 digits) and press the [Enter] key. 9.
4. Enter the message name with alphanumeric keys ([ ] [ ]keys for cursor movement) and press the [Enter] key. For example, enter “ABC”. 4.12 Storing Messages You previously learned how to send various DSC calls. In this section you will learn how to prepare, store and send DSC file messages. (Max. storage: 25 messages) 5. Confirm that call type is selected and press the [Enter] key to open the call type menu.
Mess. entry 12:ABC Call type: SHIP CALL Ship ID: 8. Confirm that Com channel is selected, and then press the [Enter] key. 06 08 10 13 09 72 Manual entry Sel. ship ID 01:FURUNOMARU Com channel 73 No INFO 69 67 MANUAL 77 15 CH Busy 17 NO INFO: No infor mation MANUAL: Enter channel w i t h n u m e r i c k e y. "CH BUSY" means the selected c h a n n e l i s bu s y n o w. 02:FRIEND SHIP 03: Automatic entry through Sel. Ship ID 9. Select channel by pressing [ ] or [ ] key and press the [Enter] key.
4.13 Message Log Sending stored messages The message log stores 50 each of the latest received routine messages (other than Distress), received distress messages, and transmitted messages, each type in its own memory. When a message log memory becomes full the oldest message in that memory is automatically erased to make room for the latest. The log file with the message of “ Not read log” has unread or unacknowledged Rx messages, unacknowledged Tx messages and unread distress messages.
RCVD MESSAGE SHIP CALL ROUTINE MMSI123456789 SIMPLEX TP:16 Err. check:OK RESEND DEL RCVD.ORDINARY 01.Ship Call 23-12:40 02.Coast call 23-12:34 03.Coast call 23-12:11 Received ordinary log 5. To delete the message, press the [ ] to select DEL, and then press the [Enter] key. RCVD.DISTRESS 01.Acknowledge 23-12:40 02.Distress 23-12:34 03.Distress 23-12:11 Received distress log 6.
5. Maintenance The FM-2721 is designed to provide years of troublefree operation. It is, however, recommended to inspect and maintain the following points to minimize the possibility of equipment failure and assure optimum performance. Be sure to disconnect the power cable at the fuse holders before performing any maintenance work. 5.1 5.3 Fuse Replacement A 10A fuse in the snap-in fuse holder on the power cable protects the equipment from reverse polarity and equipment fault.
6. Troubleshooting 6.1 Easy Troubleshooting Most VHF troubles are caused not by the transceiver itself but by the ANT/feeder or power supply system. The list below provides simple troubleshooting that can be done by the operator. DO NOT ATTEMPT TO CHECK INSIDE THE EQUIPMENT. CARELESS HANDLING MAY CAUSE PERMANENT DAMAGE TO THE TRANSCEIVER. Symptom [POWER] switch pressed but power does not come on. Possible Cause Remedy Power is off at the mains switchboard. Turns mains switch on.
(Continued from previous page) Symptom Possible Cause LCD looks normal but no sound. Squelch setting too high. Noise but no or poor signal reception. Lower squelch. Loudspeaker volume too low. Raise loudspeaker. ANT connector (on transceiver unit) is loose or disconnected. Fasten ANT connector tightly. Antenna has broken. Replace antenna. Antenna cable is damaged or immersed in water. Lay new cable (50 ohm coaxial cable). Radio barrier (large vessel, crane, etc.) in the signal path.
6.2 Diagnostics A diagnostic test facility checks the equipment for proper operation. 1. Press the [Setup] key to display the Setup menu. Setup menu Message entry Addr.entry Tel.NO. entry Position Test System 2. Select Test and press the [Enter] key twice. The test results appear as below. Daily test FSK Loop Check: OK! Results displayed as OK or NG (No Good) 3. To quit the diagnostic test, press the [Cancel] key several times.
6.3 Self check Messages The display shows the following messages to alert to possible equipment trouble. INTL Rx SCAN SIMP 25W 16 VOL:08 SQ:03 PLL unlock Rx SCAN SIMP Rx SCAN SIMP 25W 16 VOL:08 SQ:03 Remote Remote Error (Handset Priority) PLL unlock INTL INTL INTL Rx SCAN SIMP 25W 16 VOL:08 SQ:03 EPFS Error Position Error Press the [Cancel] key, and "Update pos.!!" replaces "EPFS Error." Then, enter position manually.
6.4 Menu Tree [Setup] key Message entry Addr. entry Tel. No. entry Position Test System MMSI Key click Auto revert (ON/OFF) Program ver.
Appendix How to fabricate the cable for optional connector 17JE-23250-02/17JE-23090-02 When connecting the optional handset for REMOTE2 and/or navigational equipment to port IEC 61162-1 (NMEA), optional connector 17JE-23250-02 (for handset)/17JE-23090-02 (for NMEA) and appropriate cable are required. Fabricate them as below. 1. Remove the vinyl sheath. 7. Solder the cores to the connector pins referring to the schematic diagram at back of the operator’s manual. 2.
VHF Channel Frequencies (Marine and Inland waterways) International & Inland waterways Channels: CH 01 02 03 04 05 06 07 08 09 10 11 12 13 14 Ship Tx 156.050 156.100 156.150 156.200 156.250 156.300 156.350 156.400 156.450 156.500 156.550 156.600 156.650 156.700 Ship Rx 160.650 160.700 160.750 160.800 160.850 156.300 160.950 156.400 156.450 156.500 156.550 156.600 156.650 156.
International & Inland waterways Channels (cont.): CH 60 61 62 63 64 65 66 67 68 69 71 72 73 Ship Tx 156.025 156.075 156.125 156.175 156.225 156.275 156.325 156.375 156.425 156.475 156.575 156.625 156.675 Ship Rx Remarks 160.625 160.675 160.725 160.775 160.825 160.875 160.925 156.375 156.425 156.475 156.575 (Inland waterways) 1 W only 156.625 (Inland waterways) 1 W only 156.675 CH 74 77 78 79 80 81 82 83 84 85 86 87 88 43 Ship Tx 156.725 156.875 156.925 156.975 157.025 157.075 157.125 157.175 157.
USA Channels: CH 01 05 06 07 08 09 10 11 12 13’ 14 15# 16 17* 18 19 20 21” 22 23’ Ship Tx 156.050 156.250 156.300 156.350 156.400 156.450 156.500 156.550 156.600 156.650 156.700 --156.800 156.850 156.900 156.950 157.000 157.050 157.100 157.150 Ship Rx 156.050 156.250 156.300 156.350 156.400 156.450 156.500 156.550 156.600 156.650 156.700 156.750 156.800 156.850 156.900 156.950 161.600 157.050 157.100 157.150 CH Ship Tx 24 157.200 25 157.250 26 157.300 27 157.350 28 157.400 61” 156.075 63 156.
USA Channels (cont): CH 80 81” 82” 83” 84 85 86 87 88 Ship Tx 157.025 157.075 157.125 157.175 157.225 157.275 157.325 157.375 157.425 Ship Rx 157.025 167.075 157.125 157.175 161.825 161.875 161.925 161.975 157.425 Type of Operation Com’l ------Public Corresp. Public Corresp. Public Corresp. Public Corresp. Com’l # Transmitting is disabled. * 1 W only “ 1 watt initially. Can be switched to high power (25 W) while [H/L] key is pressed. ‘ These channels are not for use by the general public in US waters.
VHF Weather Channel Frequencies CH WX0 WX1 WX2 WX3 WX4 WX5 WX6 WX7 WX8 WX9 Receive Freq. 163.275 162.550 162.400 162.475 162.425 162.450 162.500 162.525 161.650 161.775 Service NOAA Weather NOAA Weather NOAA Weather NOAA Weather NOAA Weather NOAA Weather NOAA Weather NOAA Weather Canadian Weather Canadian Weather (Transmitting is disabled when WX0 - WX9 is displayed.
PRIVATE CHANNELS (U.K. MARINERS) Coast Guard M1 (37P) M2 Ship Transmit 156.000 157.850 161.425 Ship Receive 156.000 157.850 161.425 Application for contact with U.K. C.G. for pleasure boat for pleasure boat PRIVATE CHANNELS (NORDIC) FISHING BOATS CH F1 F2 F3 Ship Transmit 155.625 155.775 155.825 Ship Receive 155.625 155.775 155.825 Application Fishing boat F1 Fishing boat F2 Fishing boat F3 L1 L2 L3 155.500 155.525 155.650 155.500 155.525 155.
General Notes on Operating Marine VHF Rules and Manners The FM-2721 fully complies with the requirements for international maritime VHF radio service. It is intended to be used by a person who holds a valid radio operator’s license and station call sign.Below are some important rules, regulations and manners for operating the equipment. • Whenever the radio is turned on, keep watch on CH16 for distress or calling message. • Distress communications have absolute priority.
Communication Distance The FM-2721 operates on the VHF band assigned for maritime mobile stations. The VHF radio wave, unlike LF or HF, propagates like a light ray. Thus communication is only available with another VHF antenna which is above the horizon. This is called line-of-sight. Even if a clear line-of-sight condition exists, the radio wave is attenuated along the signal path. The communication distance is limited also by transmitter power, antenna efficiency and receiver sensitivity.
SPECIFICATIONS OF MARINE VHF RADIOTELEPHONE FM-2721 1. GENERAL Number of Channels Communication System Class of Emission 2. TRANSMITTER Frequency Range: Output Power: Frequency Deviation: Antenna Impedance: AF Response: Spurious Emission: Modulation Frequency: INLAND WATERWAYS (ATIS): INTL: USA: Weather: Private: Semi-duplex & Simplex G3E (Voice), G2B (DSC) 55 55 55 10 20 155.000 to 161.475MHz 25W max., 1W at power reduction ±5 kHz max. 50 ohms 6 dB/oct.
