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English

General

Shock and Vibration

Meets or exceeds EIA standards, RS152B and 

RS204C

FCC Approvals

Type accepted under part 80 of the Rules; meets Great 

Lakes Agreement and party boat requirements

Transmitter

Power Output

1 watt or 25 watt (user selectable)

Power Requirement

25 watts output: 6A@13.8V DC

Modulation

±5 kHz deviation

Hum and Noise Signal-to-

Noise

45 dB@1 kHz with 3 kHz deviation with 1000 Hz 

modulating frequency (nominal)

Audio Distortion

Less than 8% with 3 kHz deviation with 1000 Hz 

modulating frequency

Spurious Suppression

–25 dBm @ Hi, –25 dBm @ Lo

Output Power Stabilization

Built-in automatic level control (ALC)

Frequency Range

156 to 158 MHz

Frequency Stability

±10 ppm @ –20°C to + 50°C

Receiver

Frequency Range

156 to 163 MHz

Sensitivity

0.25 μV for 12 dB SINAD (nominal)

Circuit

Dual Conversion Super Heterodyne PLL (Crystal for 

DSC)

Squelch Sensitivity

0.2 μV Threshold

Spurious Response

75 dB (nominal)

Adjacent Channel Selectivity

78 dB @ ±25 kHz (nominal)

Audio Output Power

2.5 watts (10% Distortion, 8 Ω load)

Power Requirement

360 mA @ 13.8V DC at squelched, 920 mA @ 13.8V 

DC at maximum audio output

IF Frequencies

1st 41.925 MHz, 2nd 455 kHz (1st 21.7 MHz, 2nd 455 

kHz for DSC)

reFerenCe taBles 

this radio does not support ais channels.

Channel descriptions and what they mean

The table below lists the display name or channel description used in the following tables 

and what each description means. 

Summary of Contents for GMR1235-2

Page 1: ...UM415 RADIO MARITIME ASN GUIDE D UTILISATION SUBMERSIBLE DSC MARINE RADIO OWNER S MANUAL ...

Page 2: ...e Repeat MAYDAY name of your boat once Tell where you are what navigational aids or landmarks are near or read the latitude and longitude from your GPS State the nature of your distress e g are you sinking medical emergency man overboard on fire adrift etc State the type of assistance you need medical towing pumps etc Give number of persons aboard and conditions of any injured persons Estimate pre...

Page 3: ...dicatif d appel de votre bateau une fois Donnez votre position quels sont les points de repère ou aides à la navigation près de vous ou lisez les coordonnées de longitude et de latitude apparaissant sur votre dispositif GPS Révélez la nature de votre détresse par exemple nous sommes en train de couler urgence médicale un homme à la mer un incendie nous sommes à la dérive etc Révélez la nature de l...

Page 4: ... su navío Describa donde se encuentra ayudas de navegación o marcas destacadas cercanas o lea la latitud y la longitud en su GPS Describa la clase de su apuro ej se está hundiendo emergencia médica hombre al agua hay fuego está a la deriva etc Describa la cantidad de personas abordo y las condiciones de cualquier persona lesionada Estime la navegabilidad actual de su navío ej cuanto de inmediato e...

Page 5: ...anced DSC features 21 What is an MMSI number 21 Entering MMSI numbers 22 Using the Directory 23 Making DSC Calls 24 Making an automatic distress call 26 Receiving a DSC call 27 Test Calls 28 Position Request and Reply 29 Putting the radio into standby 31 Disabling automatic channel switching 31 Renaming Channels 32 Installing the Hardware 32 Mounting the radio 32 Connecting the radio 33 Connecting...

Page 6: ...view Conventions This manual uses several different type styles to help you distinguish between different parts of the radio BOLD SMALL CAPITALS indicates an actual button or knob on the radio or microphone Upper and Lower Case bold indicates a connector or label on the radio Italics indicate text on the display such as menu options prompts and confirmation messages Term Meaning DSC Digital Select...

Page 7: ... English Getting Started What s included Mounting Bracket and Knobs Mounting Hardware Microphone Hanger and Mounting Hardware ...

Page 8: ...tions in your area Save a channel into memory or remove a channel from memory CALL MENU Display the call menu Display the normal menu DISTRESS Select the nature of your distress for a distress call Transmit a distress call SQUELCH knob turn clockwise to decrease channel noise 16 9 TRI triple dual watch button CLR SCAN channel scan button WX MEM button CALL MENU button DISTRESS button LCD display E...

Page 9: ...sories see page 34 Parts of the Microphone Button Press to Press and hold to Move up one channel at a time Move quickly up the channels Move down one channel at a time Move quickly down the channels 13 8V DC ANTENNA Black wire Red wire Power Cable Antenna connector SO238 Heat sink Accessory cable 13 8V DC ANTENNA Black wire Red wire Power Cable Antenna connector SO238 Heat sink Accessory cable 16 ...

Page 10: ...ays MMSI not entered When it powers on the radio selects the last channel used Setting the UIC Channel Mode USA CAN INT The radio comes preset to use the UIC channels assigned for the United States If you are operating in an area that uses Canadian or international UIC channels you will need to change the channel mode Press and hold CALL MENU to display the normal menu and choose the Setup sub men...

Page 11: ...Mode What It Does Use It When To Turn it on off Weather Alert Checks for alerts on the last weather channel you used every seven seconds You want to be made aware of severe weather conditions in your area conditions in your area Select WX Alert Mode in Setup submenu and then choose ON or OFF Triple Checks for activity on channels 16 and 9 every two seconds You want to monitor a channel yet maintai...

Page 12: ...the transmit power press and hold the ENT 1W 25W for two seconds The transmit power switches between 1 watt and 25 watts each time you press and hold ENT 1W 25W Normal mode with Weather Alert Watch If you activate Weather Alert Watch while operating in normal mode the radio checks the most recently used weather channel every seven seconds If it detects a weather alert for your area it will change ...

Page 13: ...ly used weather channel with WX Alert on Monitoring Channel 25 wx Every 7 seconds the radio checks the most recently used weather channel with WX Alert on Monitoring Channel 25 wx WX Alert Every 7 seconds the radio checks the most recently used weather channel 09 16 09 16 09 16 Triple Watch Every 2 seconds the radio checks channels 9 16 Monitoring Channel 25 wx WX Alert Every 7 seconds the radio c...

Page 14: ...ch while operating in scan mode the radio checks channels 16 and 9 every two seconds then goes on to scan the next channel with Dual Watch turned on the radio only checks channel 16 Press and hold 16 9 TRI on the radio or the microphone for two seconds to turn Triple Dual Watch on or off To change between Triple or Dual Watch see page 18 Press and hold the CLR SCAN key to turn off Scan mode and se...

Page 15: ...and mutes the speaker If an alert is detected for your area the radio sounds an alert tone and turns the speaker back on This mode is very useful when you are anchoring for the night but want to stay informed of any hazards in your area To turn Weather Alert Watch on or off press and hold CALL MENU while the radio is idle Select Setup and then WX Alert Mode Use CHANNEL UP and CHANNEL DOWN to choos...

Page 16: ... microphone to move down a line in the menu if you are at the bottom line of the menu the cursor jumps to the top of the menu Press CLR SCAN to go back to the previous menu screen From any menu screen choose Exit or press and hold CALL MENU to close the menu screen USA CAN INT Dual TriWatch GPS Setup FIPS Codes Auto CH SW POS Reply Test Reply Channel Name Group MMSI User MMSI WX Alert Mode Exit Co...

Page 17: ...having difficulty hearing a transmission try setting the squelch level lower Changing the channel Press CHANNEL UP and CHANNEL DOWN briefly to scroll through the channels one channel at a time Press and hold CHANNEL UP or CHANNEL DOWN to quickly scroll through the channels Making a transmission To make a transmission press and hold the microphone PUSH TO TALK button Release the PUSH TO TALK button...

Page 18: ...tempting to use the channel at the same time If you switch to one of these channels the radio changes back to 1 Watt automatically See the channel lists beginning on page 40 for a list of power restricted channels Choosing Triple Watch or Dual Watch In Triple Watch mode the radio briefly checks channels 16 and 9 every two seconds In Dual Watch mode the radio checks channel 16 only Generally Triple...

Page 19: ...n store up to 30 different FIPS codes in your radio Display the normal menu and choose the Setup sub menu Select FIPS Codes The screen displays any previously entered FIPS codes To add a new FIPS code select New Use CHANNEL UP and CHANNEL DOWN to change the first of the six digits CHANNEL UP increases the number and CHANNEL DOWN decreases it When the first digit is correct press ENT 1W 25W The cur...

Page 20: ... DSC distress call you will be telling the arrows to adjust each of the values in turn Display the normal menu and choose the Setup sub menu Select GPS Setup and then choose Position Set The GPS manual input screen displays the fields to be entered blink The cursor highlights the hour Use CHANNEL UP and CHANNEL DOWN to set the displayed hours to match coordinated universal time UTC also called Gre...

Page 21: ...ons require less bandwidth voice transmissions channel 70 avoids the problems of busy voice channels Advanced DSC features Your radio supports the following DSC features Feature Menu Item Function Individual Call Individual Contact another vessel from your directory Group Call Group Contact all vessels that share your group MMSI code All Ships Call All Ships Broadcast to all vessels within range u...

Page 22: ... for contact information Use CHANNEL UP and CHANNEL DOWN to enter the first of the nine digits CHANNEL UP increases the number and CHANNEL DOWN decreases it When the first digit is correct press ENT 1W 25W The cursor moves to the next digit Enter the remaining eight digits of the MMSI number in the same way If you make a mistake while entering a number press CLR SCAN to erase the wrong number and ...

Page 23: ...he new MMSI number and asks you to confirm To save this MMSI number select Yes and confirm the entry To cancel this MMSI number select No The radio returns to the Setup menu Using the Directory The directory lets you store up to 20 MMSI numbers of other stations so you can call them quickly Follow the steps below to edit the MMSI numbers in your directory Press CALL MENU to display the call menu S...

Page 24: ... ENT 1W 25W without entering a name the radio uses the MMSI number in the directory list If you make a mistake while entering a number press CLR SCAN to erase the wrong number and the cursor is moved to left digit When you finish entering the name the radio displays the new MMSI number and name and asks you to confirm To save this directory entry select Yes to cancel this directory entry select No...

Page 25: ...oose the directory entry you want to call and press ENT 1W 25W If you want to call a station that is not in your directory select Manual The radio prompts you to enter the MMSI number you want to call Enter the MMSI number the same way you enter directory entries see page 22 Enter all nine digits and press ENT 1W 25W The radio prompts you to select a response channel Use CHANNEL UP and CHANNEL DOW...

Page 26: ...t in distress Open the call menu Select All Ships and then choose whether this is an Urgency call or a Safety call The radio asks you to confirm the call Select Send to continue with the call or select Cancel to cancel the call The radio automatically switches to channel 70 to transmit the call request then automatically switches to channel 16 the designated response channel for all ships calling ...

Page 27: ... off your boat or away from your radio and want to see who has tried to contact you The radio displays the last 10 distress calls and the last 20 non distress calls that it received If you have unread incoming DSC calls the radio displays a Message icon When you display all Distress and Other receiving logs the message icon disappears Press CALL MENU to display the call menu Select Receive Log Sel...

Page 28: ...irectly from the receive log From the call detail screen press CHANNEL DOWN until Call Back appears at the bottom of the display Press ENT 1W 25W to return that station s call Test Calls Making Test Calls Test You can use the test call feature to make sure your radio is working and configured correctly To avoid overloading coastal receiving stations you should limit test calls to these stations to...

Page 29: ...automatically reply to all test call you can enable automatic test call reply Press and hold CALL MENU to display the normal menu Select Setup and then Test Reply Choose Auto and press ENT 1W 25W The radio will automatically send an acknowledgement when it receives a test call To disable automatic test call reply repeat the steps above and select Manual Position Request and Reply Requesting anothe...

Page 30: ...e other station select Reply the radio transmits your latitude and longitude to the other station If you select Reply but the radio does not have valid GPS data it transmits the reply code with No Position To reject the position request select Cancel Enabling automatic position reply If you want the radio to automatically transmit your current position whenever it receives a position request you c...

Page 31: ...put your radio in standby Display the Call menu Select Standby to place your radio in standby mode The radio displays the standby screen above To cancel standby and return to the mode your radio was in press any button Disabling automatic channel switching If you are involved in a bridge to bridge call you may not want the radio to automatically switch channels when it receives a DSC call In cases...

Page 32: ... If you make a mistake while entering a number press CLR SCAN to erase the wrong number and the cursor is moved to the left digit When you finish entering the name the radio displays the new channel name and asks you to confirm To save this new channel name select Yes to cancel the change select No The radio returns to the channel list To restore a channel back to its original name select the chan...

Page 33: ...na Requirements Nominal 13 8 VDC power supply with a negative ground 10 5 VDC to 16 0 VDC Power leads should be kept as short as possible A direct connection to the power supply is ideal Minimum of 14 AWG copper wire for extensions up to 20 feet 12 AWG wire for extensions from 20 to 35 feet or 10 AWG wire for extensions from 35 to 60 feet Male PL 259 connector 50 Ω impedance Minimum 4 foot 3 dB ra...

Page 34: ...the antenna lead in wires to the SO238 connector labeled ANTENNA on the back of your radio Connecting to a GPS receiver If you connect the radio to a GPS receiver the radio can automatically transmit your current position during an automated distress call or during a normal DSC call Your radio supports a standard NMEA0183 input from a GPS receiver Follow the steps below to connect your radio to yo...

Page 35: ...unt Models Blue Black Garmin Portable Models Brown Black JRC 100 Series Green Black JRC 200 Series White Black JRC GPS500 Yellow Green Lowrance Eagle Fixed Mount Models White Black Lowrance Eagle Portable Models Orange Black Magellan Fixed Mount Models Gray Black Magellan Portable Models Orange Black Northstar All Models Yellow Black RayMarine 420 Yellow Brown RayMarine 520 620 Blue Brown RayMarin...

Page 36: ...p menu If your local area observes Daylight Savings Time choose Daylight Save and press the ENT 1W 25W button If Daylight Savings Time is currently in effect select On If Daylight Savings Time is not currently in effect select Off Press ENT 1W 25W The radio activates the new time setting and returns to the GPS Setup menu Connecting to a Chartplotter Your radio provides a standard NMEA0183 GPS outp...

Page 37: ...overed NOTE To extend the life of the radio use waterproof tape to seal electrical connections Maintenance and Troubleshooting Due to its rugged design your radio requires very little maintenance However it is a precision electronic instrument so you should follow a few precautions If the antenna has been damaged you should not transmit except in the case of an emergency A defective antenna may ca...

Page 38: ...n I m not getting any GPS data on my display Make sure your GPS receiver is correctly connected see Connecting to a GPS receiver page 34 Make sure your GPS receiver is working properly Make sure that your GPS receiver supports the NMEA parameters described in NMEA Operation on page 49 I m not getting any hazard alerts Make sure Weather Alert Watch is turned on Check to make sure the FIPS codes in ...

Page 39: ... you purchased the radio for more information Specifications All speficifations are subject to change without notice Radio Specifications General Controls Volume Pwr Squelch Status Indicators Transmit power Scan mode Triple Watch mode Battery High Battery low USA CAN INT Alert Memory GPS Message Weather band GPS status and Channel Display Display LCD Full Dot Matrix Buttons ENT 1W 25W Channel UP C...

Page 40: ... automatic level control ALC Frequency Range 156 to 158 MHz Frequency Stability 10 ppm 20 C to 50 C Receiver Frequency Range 156 to 163 MHz Sensitivity 0 25 μV for 12 dB SINAD nominal Circuit Dual Conversion Super Heterodyne PLL Crystal for DSC Squelch Sensitivity 0 2 μV Threshold Spurious Response 75 dB nominal Adjacent Channel Selectivity 78 dB 25 kHz nominal Audio Output Power 2 5 watts 10 Dist...

Page 41: ...or ports some channels may be restricted to specific types of port operations messages NAVIGATIONAL BRIDGE TO BRIDGE messages about ship navigation for example passing or meeting other ships maneuvering through locks or navigating around drawbridges Messages must be short STATE CONTROL messages about government regulation and control boating activities or assistance to ships also used to talk to s...

Page 42: ...tor 28 162 0000 157 4000 Duplex Marine operator 63A 156 1750 156 1750 Simplex Vessel traffic system 65A 156 2750 156 2750 Simplex Port operation 66A 156 3250 156 3250 Simplex Port operation 67 156 3750 156 3750 Simplex 1W Bridge to bridge 68 156 4250 156 4250 Simplex Non commercial 69 156 4750 156 4750 Simplex Non commercial 70 156 5250 156 5250 DSC Only DSC 71 156 5750 156 5750 Simplex Non commer...

Page 43: ...implex Inter ship safety 7A 156 3500 156 3500 Simplex Commercial 8 156 4000 156 4000 Simplex Commercial 9 156 4500 156 4500 Simplex Boater calling channel 10 156 5000 156 5000 Simplex Commercial 11 156 5500 156 5500 Simplex Vessel traffic system 12 156 6000 156 6000 Simplex Vessel traffic system 13 156 6500 156 6500 Simplex 1W Bridge to bridge 14 156 7000 156 7000 Simplex Vessel traffic system 15 ...

Page 44: ...50 156 7250 Simplex Port operation 75 156 7750 156 7750 Simplex 1W Port operation 76 156 8250 156 8250 Simplex 1W Port operation 77 156 8750 156 8750 Simplex 1W Port operation 78A 156 9250 156 9250 Simplex Inter ship 79A 156 9750 156 9750 Simplex Inter ship 80A 157 0250 157 0250 Simplex Inter ship 81A 157 0750 157 0750 Simplex Canadian coast guard 82A 157 1250 157 1250 Simplex Canadian coast guard...

Page 45: ...6 9500 Duplex Commercial 20 161 6000 157 0000 Duplex Port operation 21 161 6500 157 0500 Duplex Port operation 22 161 7000 157 1000 Duplex Port operation 23 161 7500 157 1500 Duplex Marine operator 24 161 8000 157 2000 Duplex Marine operator 25 161 8500 157 2500 Duplex Marine operator 26 161 9000 157 3000 Duplex Marine operator 27 161 9500 157 3500 Duplex Marine operator 28 162 0000 157 4000 Duple...

Page 46: ...rator 87 157 3750 157 3750 Simplex Marine operator 88 157 4250 157 4250 Simplex Marine operator Channels 87 88 revert from duplex to simplex operation AIS channels are not supported Weather Channels and Frequencies US CAN and INT Ch No RX Freq Name on display WX01 162 5500 162 550 MHz WX02 162 4000 162 400 MHz WX03 162 4750 162 475 MHz WX04 162 4250 162 425 MHz WX05 162 4500 162 450 MHz WX06 162 5...

Page 47: ...od Watch FFA Watch Flash Flood Warning FFW Warning Flash Flood Statement FFS Statement Flood Watch FLA Watch Flood Warning FLW Warning Flood Statement FLS Statement Freeze Warning FZW Warning High Wind Watch HWA Watch High Wind Warning HWW Warning Hurricane Watch HUA Watch Hurricane Warning HUW Warning Hurricane Statement HLS Statement Severe Thunderstorm Watch SVA Watch Severe Thunderstorm Warnin...

Page 48: ...Administrative Message ADR Statement Practice Demo DMO Test Required Monthly Test RMT Test Required Weekly Test RWT Test Biological Hazard Warning BHW Warning Boil Water Warning BWW Warning Chemical Hazard Warning CHW Warning Dam Watch DBA Watch Dam Break Warning DBW Warning Contagious Disease Warning DEW Warning Emergency Action Notification EAN Warning Emergency Action Termination EAT Statement ...

Page 49: ...rate 4800 bps Data bits 8 Parity None Stop bits 1 Data amplitude Over 3 0 V Drive capability Over 10 mA The radio supports RMC GLL GNS GGA and ZDA sentences When these sentences are received the radio displays latitude longitude date time course and speed If any sentence except an RMC or GLL sentence is received the radio uses the information based on the following priority order Status RMC GLL GN...

Page 50: ...iliarize yourself with the rules on marine radios and be aware of which rules apply to your boat Complete guidelines for all ship and marine radio types can be found at the US Coast Guard website under the topic Radio Info for Boaters the direct link is http www navcen uscg gov marcomms boater htm Here are a few guidelines that affect nearly all boaters If you have a VHF radio on your boat you mus...

Page 51: ... the original retail owner this Uniden roduct to be free from defects in materials and craftsmanship with only the limi tations or exclusions set out below WARRANTY DURATION This warranty to the original user shall terminate and be of no further effect 36 months after the date of original retail sale The warranty is invalid if the Product is A damaged or not maintained as reasonable or necessary B...

Page 52: ...ic legal rights and you may also have other rights which vary from state to state This warranty is void outside the United States of America PROCEDURE FOR OBTAINING PERFORMANCE OF WARRANTY If after following the instruc tions in this Operating Guide you are certain that the Product is defective pack the Product carefully preferably in its original packaging Include evidence of original purchase an...

Page 53: ...UTZZ01630ZZ 0 QUESTIONS Contactez nous au www uniden com ou appelez 1 800 297 1023 Imprimé en Chine QUESTIONS Visit our website at www uniden com or call 1 800 297 1023 Printed in China ...

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