Uniden MHS335BT User manual

RADIO VHF MARITIME FLOTTANTE
OWNER’S MANUAL
GUIDE D’UTILISATION
FLOATING VHF MARINE RADIO
MHS335BT

MAKING A DISTRESS CALL
Lift the red cover. Press and hold the DISTRESS key
for three seconds. Your radio transmits
your ship’s location every few minutes until you
receive a response.
NOTE: If the radio displays Enter User MMSI , cancel the automac
distress call and make a normal voice distress call.
Making a Voice Distress Call
Speak slowly - clearly - calmly.
For future reference, write your ship’s name & call sign here:
1. Make sure your radio is on.
2. Press the 16/P key to switch to Channel 16 (156.8 MHz). (If the corner of the
display does not show 16, press the 16/P key again until it does.)
3. Press the PUSH-TO-TALK key and say: “MAYDAY -- MAYDAY -- MAYDAY.”
4. Say “THIS IS {name of your ship (three times)} and call sign/ship registration
number (once). ”
5. Repeat “MAYDAY {name of your ship} ” once.
6. Tell where you are: (what navigational aids or landmarks are near, or read
the latitude and longitude from your GPS).
7. State the nature of your distress (e.g. are you sinking, medical emergency,
man overboard, on re, adrift, etc. ).
8. State the type of assistance you need (medical, towing, pumps, etc.).
9. Give number of persons aboard and conditions of any injured persons.
10. Estimate present seaworthiness of your ship (e.g. how immediate is the
danger due to ooding or re or proximity to shore).
11. Briey describe your ship, giving ship name (e.g. “Blue Duck is 32 foot cabin
cruiser, white hull, blue deck house”).
12. Say: “I WILL BE LISTENING ON CHANNEL 16.”
13. End message by saying “THIS IS {name or call sign of your ship} , OVER.”
14. Release the PUSH-TO-TALK key and listen.
If you do not get an answer aer 30 seconds, repeat your call, beginning at step 3, above.
Lift the red cover
and press the white
DISTRESS button
underneath.

FAIRE UN APPEL DE DÉTRESSE
Soulevez le couvercle noir. Maintenez DISTRESS enfoncé
pendant trois secondes. Votre radio transmettra
l’emplacement de votre bateau toutes les quelques
minutes jusqu’à ce que vous receviez une réponse.
Remarque : Si la radio ache Enter User MMSI , annulez l’appel de
détresse automaque et eectuez un appel de détresse vocal
normal.
Faire un appel de détresse
Parlez lentement – clairement – calmement.
Pour toute référence ultérieure, écrivez ci-dessous le nom et l’indicatif d’appel de votre
bateau:
1. Vériez si votre radio est en marche.
2. Appuyez sur la touche 16/P an de commuter au canal 16 (156,8 MHz). (Si le canal
16 n’apparaît pas à l’a󰀩chage, appuyez de nouveau sur la touche 16/P jusqu’à ce qu’il
soit a󰀩ché.)
3. Appuyez sur le bouton Push-to-Talk et dites:“MAYDAY -- MAYDAY -- MAYDAY”.
4. Donnez l’identité de votre navire en disant : “ICI {nom de votre bateau (trois fois) ou
indicatif d’appel et le numéro d’identication de votre bateau (une fois)}”.
5. Dites “MAYDAY {nom ou indicatif d’appel de votre bateau} une fois”.
6. 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).
7. 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.
8. Révélez la nature de l’aide désirée (médicale, remorquage, essence, etc.)
9. Donnez le nombre de personnes à bord et les conditions des blessés, s’il y en a.
10. Donnez la condition de navigabilité actuelle de votre navire, tel que le degré de
l’urgence par rapport une inondation, et une incendie.
11. Donnez une brève description de votre navire en donnant le nom du bateau (par
exemple, “Blue Duck est un yacht de croisière de 32 pieds, avec une coque blanche
et un rou󰀪e bleu.).
12. Dites : “JE VAIS ÉCOUTER SUR LE CANAL 16”.
13. Terminez le message en disant “ICI {nom ou indicatif d’appel de votre bateau}, À
VOUS”.
14. Relâchez le bouton Push-to-Talk du microphone et écoutez.
Si vous n’obtenez pas de réponse après 30 secondes, répétez l’appel en commençant à l’étape 3
ci-dessus.
Soulevez le
couvercle et
appuyez sur le
bouton DISTRESS
blanc en dessous.

Table of Contents
INTRODUCTION.......................E-3
FEATURES ................................E-3
WHAT'S INCLUDED ..................E-4
PARTS OF THE MHS335BT......E-5
Front View.................................E-5
Back View .................................E-6
Charger..................................... E-6
READING THE IDLE SCREEN..E-6
Display Icons and
What They Mean ...................E-7
HOW IT WORKS.......................E-7
USING THE POP-UP
KEYBOARD ...........................E-8
MENUS ......................................E-8
DISTRESS MESSAGE Menu...E-10
GENERAL SETUP Menu .........E-10
RADIO SETUP Menu............... E-11
GPS Menu............................... E-12
WAYPOINT SETUP Menu ....... E-12
BLUETOOTH Menu.................E-12
DSC SETUP Menu ..................E-12
ABOUT Menu ..........................E-13
RESET (To Factory Defaults)
Menu ................................... E-13
USING SOFT KEYS.................E-13
MOB Soft Key ......................... E-13
WX Soft Key............................E-14
CALL Soft Key ........................E-14
HILO Soft Key......................... E-16
TRI Soft Key............................E-16
MEM Soft Key......................... E-16
SCAN Soft Key .......................E-16
COMP Soft Key....................... E-17
NAV Soft Key ..........................E-17
WPT Soft Key .........................E-17
BT Soft Key.............................E-17
SPKR Soft Key........................E-18
OPERATION MODES ..............E-18
Normal ....................................E-19
Scan........................................E-20
Weather ..................................E-22
SETTING UP THE
HARDWARE ....................E-23
ATTACHING THE ANTENNA... E-23
INSTALLING THE BATTERY ...E-23
USING THE ALKALINE
BATTERY TRAY ....................E-23
CONNECTING POWER ..........E-24
MOUNTING THE CHARGER...E-24
Charging the Battery............... E-25
Charging the Radio with
Battery Pack Installed.......... E-25
Charging the Battery
Pack Only ............................E-25
Important Notes on
Charging the battery............E-25
SETTING UP YOUR RADIO...E-25
TURNING IT ON .....................E-25
ENTERING THE USER
MMSI .....................................E-25
SETTING IT UP........................E-26
Acquiring GPS Location..........E-26
Changing the Volume ............. E-26
Setting the Squelch Level ....... E-26
Setting the UIC Channel
Mode (USA/CAN/INTL) ....... E-27
Setting Key Lock..................... E-27
Setting WX Alert Mode............E-27
Setting FIPS Codes ................E-27
Adjusting the Backlight............E-27
Adjust the LCD Contrast ......... E-28
Turning the Key Beep On
and O󰀨................................. E-28
OPERATING THE RADIO .......E-28

Making a Transmission ...........E-28
Changing the Transmission
Level....................................E-28
Saving the Channel into
Memory ............................... E-29
Using the LED Light................ E-29
DIGITAL SELECTIVE
CALLING FEATURES
(DSC) ................................E-29
WHAT IS DSC? .......................E-29
MMSI NUMBERS..................... E-29
Entering MMSI Numbers ........E-30
USING THE DIRECTORIES ....E-30
Individual Directory .................E-30
Group Directory.......................E-31
MAKING DSC CALLS ..............E-32
Calling a single station
(Individual Call) ................... E-33
Calling a particular group
of ships (Group Call) ...........E-33
Calling all ships
(All-Ships Call)..................... E-34
MAKING AN AUTOMATIC
DISTRESS CALL .................. E-34
Canceling an automatic
distress call ......................... E-35
Resending an automatic
distress call ......................... E-35
Receiving an automatic
distress call
acknowledgement ............... E-35
Receiving a distress call ........E-35
DSC CALLS .............................E-35
Individual DSC Call................. E-35
Group DSC Call ...................... E-35
Answer a DSC Call ................. E-36
DSC Call Logs ........................E-36
Making or Returning a Call .....E-37
TEST CALLS............................E-37
Making Test Calls (Test) ......... E-37
Receiving Test Call Setup .......E-37
POSITION REQUEST
AND REPLY...........................E-38
Enabling Automatic
Position Reply ..................... E-38
POS Request.......................... E-38
Position Send ......................... E-38
AUTO POLLING.......................E-38
GPS FEATURES.....................E-39
GPS OPERATION
OVERVIEW ...........................E-39
GPS MENU ..............................E-39
NMEA FEATURES..................E-40
Chartplotter Connection ......... E-41
NMEA Output ......................... E-41
ADDITIONAL FEATURES ......E-41
Renaming Channels ................E-41
UNIDEN MARINE APP ...........E-42
MAINTENANCE AND
TROUBLESHOOTING.........E-42
SPECIFICATIONS...................E-43
REFERENCE TABLES ............E-44
Channel Descriptions and
What They Mean .................E-44
MARINE RADIO CHANNEL
CHART ..................................E-45
WEATHER CHANNELS AND
FREQUENCIES (US, CAN,
AND INTL) .............................E-50
EMERGENCY ALERT
(SAME) SYSTEM ..................E-50
Types of Events ......................E-50
No Response Event Code ......E-52

REGULATIONS AND SAFETY
WARNINGS..........................E-52
Maritime Radio Services
Operation..................................E-52
Basic Radio Guidelines ............E-52
RBRC Information .................E-54
COMPLIANCE ........................E-54
Three-Year Limited
Warranty ..............................E-55

E-3Uniden MHS335BT Radio Owner’s Manual
UNIDEN®
FLOATING VHF MARINE RADIO
MHS335BT
INTRODUCTION
Uniden's MHS335BT is a oating, hand-held class D DSC radio with an integrated GPS
receiver. It is also Bluetooth capable so you can use Uniden's smartphone app (iOS and
Android) to set up the radio and text message other VHF text message capable radios.
You can enter other information such as DSC directory information and update the radio's
rmware.
FEATURES
Your radio provides the following key features:
xSubmersible design. Complies with oating JIS8/IPX8 water-resistant standards,
which means the radio can be submerged in 4.9 feet of water for up to 30 minutes
without damage.
NOTES:
The radio will only meet this rating if fully assembled and all rubber seals and
bungs are well maintained and correctly tted. This means that the speaker
microphone bung is inserted, and the battery pack (or case) and antenna are
attached and securely fastened.
After your radio is submerged in water, the sound might be distorted. This
is because there is still water remaining in and around the speaker and
microphone. Just shake the radio to clear excess water, and the sound should
return to normal.
If your radio is exposured to salt water, clean it thoroughly with fresh water
and dry it before turning it on.
The charger is not waterproof.
xMemory Scan mode. Lets you save channels to memory and monitor them in quick
succession.
xHigh/LO power level select. Lets you boost the transmitter power from 1W to 2.5 or
6W for added transmission distance.
xBattery level display and low battery alert.
xDual and Triple Watch operation. These di󰀨erent watch modes let you monitor up to
two Coast Guard Distress/Hailing channels and one weather channel along with one
regular marine channel.
xAll marine VHF channels for the U.S., Canada, and international waters
xEmergency 16/09 Channel monitoring. Set unit to scan one or both of these
emergency channels regularly within normal scanning cycles.
xClass D second receiver is dedicated to monitoring the DSC watch channel 70 to
ensure that no incoming messages are missed.

E-4 Uniden MHS335BT Radio Owner’s Manual
xNational Oceanic and Atmospheric Administration (NOAA) Weather Channel
watch. Sounds a warning tone when a hazard alert is issued.
xLCD and key backlight/Flashlight/SOS Strobe. Pressing the Light/Lock ( /LOCK)
key initiates various light options (see page E-5).
xKey Lock. Locks keys to prevent accidentally changing channels or entering data.
xSelectable Backlight Timer. Lets you select the length of time the backlight will be
on.
xDSC. Lets you call other ships or groups using their unique identication code. This
radio complies with International Class D DSC standards for Handheld GPS/VHF
marine transceivers.
xGPS (Favorite Position mode). Lets you save your current position as well as
manually enter other positions.You can save positions into a directory to return to them
as desired.
xWaypoints. Create a list of coordinates and use that list to navigate to various
destinations.
xNMEA input/output. Lets you connect to a chartplotter and, through menus,
determine what NMEA data you want to receive.
x10 weather channels available for monitoring.
xMOB (Man Overboard). Lets you lock onto the current position when a Man
Overboard situation occurs.
xCompass Display. Lets you determine the way you want the radio to display your
course - by showing your course and direction or by showing location on an north-
south-east-west display. Automatically auto-plots to a received DSC distress call.
WHAT'S INCLUDED
NOTE: Some of the graphics in this manual may vary slightly from the actual product.
If any pieces are missing or damaged, contact Customer Service at www.uniden.com.
Antenna
MHS335 Radio
Charging Cradle
AC Adapter DC Adapter
Lithium Ion
Rechargeable Battery
Not shown:
1 meter NMEA
cable
Belt Clip
Wrist Strap
Mounting Hardware

E-5Uniden MHS335BT Radio Owner’s Manual
PARTS OF THE MHS335BT
Front View
Key Press to... Press and hold to...
POWER N/A Turn radio on and o󰀨.
Push-to-Talk N/A Transmit on a current TX power.
MON Quickly open and close
squelch (single press/release). Open Squelch.
Soft Function Keys (3)
Activate function assigned to
that key. Function displays on
screen above key. See page
E-13.
NA
MENU Open the menus. NA
◄ / ▲ / ► / ▼Move up, down, left, or right
on a screen. NA
CLR Returns to the IDLE screen. NA
Light/LOCK
(/LOCK)
- Press once to activate the
LCD and key backlight.
- Press twice to activate LED
steady on (Flashlight).
- Press three times to activate
the SOS strobe light.
- Press a fourth time to turn
the LED o󰀨.
Lock key input to prevent input
errors.
16/P
Cycle through call channel,
channel 16, channel 9, and
back to the starting channel.
NA
VOL/SQ Press once: Adjust volume.
Press twice: Adjust squelch. NA
DISTRESS Activate DISTRESS screen. Send out default distress signal.
Note: Thermal sensor on back.
Screen
Ext. Speaker/
Mic jack
Antenna
Power
Push-
to-Talk
Monitor Menu
Direction
Arrows
CLR Light/Lock
Speaker
16/P
VOL/
SQ
Function
Keys
LED
DISTRESS
Microphone

E-6 Uniden MHS335BT Radio Owner’s Manual
Back View
Charger
READING THE IDLE SCREEN
The Idle screen shows di󰀨erent information depending on what you are doing. Not all icons
display on every screen. This dummy Idle screen displays many of the possible icons. The
table below shows possible icons and what they mean.
ALT
INTL
6W
TRI
MEM
WX 15
COMMERCIAL
MOB WX CALL
< >
TX
LAT:32˚53,6604N
LON:096˚59,3158W
TIME:20:47 Local
DATE:Aug 23,2017
1
8
9
7
65432
101112
16
15
14
13
17
Belt clip
Battery
Battery charging
contacts
Battery
latch
Wrist strap slot
Charging
contacts
CHARGE LED
Screw holes
NMEA
contacts
Screw hole