UM435 - Radio UNIDEN - Free user manual and instructions

Product Type	Marine VHF Radio with Digital Selective Calling (DSC) Class D
Brand	Uniden
Model	UM435
Dimensions (without heat sink)	75 mm (H) x 167 mm (W) x 129 mm (D)
Weight	1 kg (2.2 lb)
Power Supply	13.8 V DC nominal (10.5 V to 16 V DC), negative ground
Power Consumption	360 mA (standby) / 920 mA (full audio power) at 13.8 V DC
Transmit Power	1 W or 25 W (selectable)
Display	Matrix LCD screen with adjustable backlight
Frequency Range	156 to 163 MHz (transmit and receive)
Channels	All USA, Canada and International marine VHF channels
DSC Functions	Individual, group, all ships, automatic distress, position request/send, test call
Weather Monitoring	10 NOAA channels with alert and FIPS code filtering
Scan Mode	Memory channel scan with activity pause
Triple/Watch Mode	Monitoring channels 16 and 9 (tri) or 16 only (dual)
GPS Input	NMEA 0183 (4800 baud) for automatic position
NMEA Output	Outputs DSC/DSE frames for received calls
Directory	Up to 20 names and MMSI numbers
Call Log	Last 10 distress calls, last 20 general calls
Waterproof Rating	IPX8 (submersible up to 1.5 m for 30 minutes)
Operating Temperature	-20 °C to +50 °C
Antenna	PL-259 connector, 50 Ω impedance
Built-in Speaker	1.77 inch, 8 Ω, audio power 2.5 W
Warranty	3 years limited

Frequently Asked Questions - UM435 UNIDEN

How to make a voice distress call with the Uniden UM435 radio?

Lift the red cover and press the DISTRESS button for automatic call. For a voice call, switch to channel 16 with the 16/9-TRI key, hold PUSH TO TALK, say 'MAYDAY MAYDAY MAYDAY', give the ship's identity, position, nature of distress, number of people on board, and end with 'OVER'. Release the button and listen on channel 16. If no response after 30 seconds, repeat.

How to enter my MMSI number in the radio?

Access the menu by pressing CALL-MENU, then select Setup > User MMSI. Use CHANNEL UP/DOWN to enter the 9 digits, confirm each digit with ENT-1W/25W. Confirm the save. Caution: the user MMSI can only be entered once.

Can I receive weather alerts even in normal mode?

Yes, enable weather alert monitoring in the Setup > WX Alert Mode > ON menu. The radio will check the last used weather channel every 7 seconds and switch automatically if an alert is issued in your area.

How to use scan mode to monitor multiple channels?

First save channels to memory: tune to the channel, hold WX-MEM for 2 seconds. To start scanning, hold CLR-SCAN. The radio stops on channels where activity is detected. To resume, press CHANNEL UP or wait for the end of transmission.

What to do if the radio displays 'Input Position' or 'Check GPS'?

'Check GPS' indicates a faulty GPS connection. Check the wiring. 'Input Position' means no valid GPS data has been received in 4 hours. You can manually enter the position via the Setup > GPS Setup > Position Set menu. Make sure the position is correct for a distress call.

How to adjust the squelch level?

Turn the SQUELCH knob on the radio. Start fully counterclockwise, then slowly turn clockwise until background noise disappears. Do not set too high to avoid missing weak signals.

Can I use the radio without an antenna?

No, the antenna is essential for transmitting and receiving. Use a marine VHF antenna with PL-259 connector and 50 Ω impedance. Without an antenna, you risk damaging the transmitter.

How to make an individual DSC call?

Press CALL-MENU, select Individual, choose a contact from the directory or manually enter the MMSI. Select a response channel (e.g., channel 72), confirm with Send. The radio sends the call on channel 70, then automatically switches to the chosen channel if the other station accepts.

What is the maximum range of the radio?

In 25 W mode, typical range is about 30 to 50 km (20-30 nautical miles) between two elevated antennas. Actual range depends on antenna height, power, and weather conditions. In 1 W mode, range is reduced to a few kilometers.

How to put the radio in standby mode to not answer DSC calls?

Press CALL-MENU, select Standby. The radio will automatically reply 'unattended' to individual calls. To exit standby mode, press any key.

USER MANUAL UM435 UNIDEN

Uniden®	UM435
SUBMERSIBLE DSC MARINE RADIORADIO MARITIME ASN SUBMERSIBLE
OWNER'S MANUALGUIDE D'UTILISATION

MAKING A DISTRESS CALL

Lift the red cover. Press and hold the DISTRESS button for three seconds. Your radio transmits your boat's location every few minutes until you receive a response.

NOTE: If the radio displays Enter User MMSI, cancel the automatic distress call and make a normal voice distress call.

MAKING A VOICE DISTRESS CALL

Speak Slowly — Clearly — Calmly.

For future reference, write your boat's name & call sign here:

1. Make sure your radio is on.
2. On the microphone, press the 16/9-TRI button to switch to Channel 16 (156.8 MHz). (If the corner of the display does not show 16, press the 16/9-TRI button again until it does.)
3. Press the PUSH TO TALK button on the microphone and say: MAYDAY - MAYDAY - MAYDAY."
4. Say "THIS IS {name or call sign of your boat}."
5. Say "MAYDAY {name or call sign of your boat}."
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 fire, 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 flooding or fire or proximity to shore).
11. Briefly describe your ship (length, type, color, hull).
12. Say: "I WILL BE LISTENING ON CHANNEL 16."
13. End message by saying "THIS IS {name or call sign of your boat}, OVER."
14. Release the PUSH TO TALK button and listen.

If you do not get an answer after 30 seconds, repeat your call, beginning at step 3, above.

FAIRE UN APPEL DE DÉTRESSE

MAKING A VOICE DISTRESS CALL....ii

FAIRE UN APPEL DE DÉTRESSE VOCAL....III

CÓMO HACER UNA LLAMADA DE APURO POR VOZ......IV

INTRODUCTION 1

CARACTÉRISTIQUES....1

EXPLICATION DES TERMES .... 1

COMMENT DÉBUTER....2

INCLUS DANS L'EMBALLAGE....2

NOMENCLATURE DES PIÈCES DE LA RADIO.... 3

NOMENCLATURE DES PIÈCES DU MICROPHONE....5

METTRE LA RADIO EN FONCTION .... 5

COMMENT FONCTIONNE LA RADIO ....6

FONCTIONNEMENT EN MODE NORMAL 7

RACCORDER AU CÂBLE ACCESSOIRE....35

Technical line drawing of a mechanical support bracket with two separate components (no text or symbols)

Technical line drawing of a mechanical bracket with screws and gear (no text or symbols)

Illustration of various bolt and nut components including hex nuts, washers, and hex nuts (no text or labels)

Coiled cable with two connectors and a black tie (no text or symbols)

Illustration of a coiled cable with a connector (no text or symbols)

NOMENCLATURE DES PIÈCES DE LA RADIO

graph TD
    A["CALL MENU"] --> B["Setup"]
    B --> C["ENT 1W/25W"]
    C --> D["USA/CAN/INT"]
    D --> E["ENT 1W/25W"]
    E --> F["UIC Channels USA Mode Canada Mode Intl Mode Back[CLR"] Select["ENT"]]

graph TD
    A["CALL MENU"] --> B["Setup"]
    B --> C["ENT 1W/25W"]
    C --> D["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"]]
    A --> E["System"]
    E --> F["ENT 1W/25W"]
    F --> G["Contrast Lamp Adjust Key Beep [Exit"]]
    A --> H["[Exit"]]
    H --> I["ENT 1W/25W"]
    I --> J["(Fermer le menu)"]

Utilisation du menu

graph TD
    A["CALL MENU"] --> B["Setup"]
    B --> C["ENT 1W/25W"]
    C --> D["User MMSI"]
    D --> E["ENT 1W/25W"]
    E --> F["[New"]]
    F --> G["ENT 1W/25W"]
    G --> H["Back[CLR"] 0]
    G --> I["Forward[ENT"] 16]

RACCORDER AU CÂBLE ACCESSOIRE

Your radio supports an external speaker with the following specifications:

No. can. É.-U. INT CAN TRANS RÉCEP Type de canal/Nom
01 x x 156	.050 16	0.650			Public Correspondence (Marine Operator)
01A* x			156.050	156.0500	Port Operation and Commercial (VTS (Vessel Traffic System) in some areas.
02 x x 156	.100 16	0.700			Public Correspondence (Marine Operator)
03 x x 156	.150 16	0.750			Public Correspondence (Marine Operator)
04 x	156.200		160.800		Public Correspondence (Marine Operator)

No. can. É.-U. INT CAN TRANS RÉCEP Type de canal/Nom
04A x 156.200	156.200					Canadian Coast Guard: West CoastCommercial Fishing: East Coast
05 x 156.250	160.850					Public Correspondence (Marine Operator). Ship Movement, Port Operations
05A x x 156.250	156.250					Port Operations, Ship Movement, VTS in some areas
06 x x	x 156.300	156.300	Inter-ship	safety
07 x 156.350	160.950					Public Correspondence (Marine Operator)
7A	x x 156.350	156.350	50 Commercial
08	x	x	156.400	156.400		Commercial (Inter-Ship Only)
09 x x	x 156.450	156.450				Boater Calling, Commercial and Non-Commercial
10 x x	x 156.500	156.500	Commercial
11 x x	x 156.550	156.550				Commercial, VTS in selected areas
12 x x	x 156.600	156.600				Port Operations, VTS in selected areas
13 x x	x 156.650	156.650				Intership Navigation Safety (Bridge-to-Bridge). Ships >20m length maintain a listening watch on this channel in US waters.
14 x x	x 156.700	156.700				Port Operation, VTS in some areas
15	x			INHIBIT	156.750	Environmental (Receive Only)
15 x	x 156.750	156.750				Inter-ship, Port Operations, Commercial, Non-Commercial, Ship Movement (1 Watt Only)
16 x x	x 156.800	156.800	Distress, Safety, Calling
17 x x	x 156.850	156.850				State and Local Govt Maritime Control (1 Watt Only)
18 x 156.900	161.500					Port Operations, Ship Movement
18A x x 156.900	156.900					CommercialCanada: Towing West Coast
19 x 156.950	161.550	Commercial
19A x x 156.950	156.950	Commercial

No. can. É.-U. INT CAN TRANS RÉCEP Type de canal/Nom
20 x x x 157.000	161.600				Port OperationsCanada: 1 Watt Only
20A x 157.000 157.000	7.000	Port Operation
21 x	157.050 161.650	Port Operations
21A x		x 157.050 157.050 Coast Guard Only
21B			x INHIBIT 161.650		Canadian CG ContinuousMarine Broadcast (CMB)Service
22 x	157.100 161.700				Port Operations, ShipMovement
22A x		x 157.100 157.100			US and Canadian CoastGuard Liaison and AirtimeSafety Information BroadcastsAnnounced on Channel 16
23 x x 157.150 161.750					Public Correspondence(Marine Operator)
23A x 157.150 157.150	7.150	US Coast Guard Only
23B			x INHIBIT 161.750		Canadian CG ContinuousMarine Broadcast (CMB Service
24 x x x 157.200	161.800				Public Correspondence(Marine Operator)
25 x x x 157.250	161.850				Public Correspondence(Marine Operator)
25B			x INHIBIT 161.850		Canadian CG ContinuousMarine Broadcast (CMB)Service
26 x x x 157.300	161.900				Public Correspondence(Marine Operator)
27 x x x 157.350	161.950				Public Correspondence(Marine Operator)
28 x x x 157.400	162.000				Public Correspondence(Marine Operator)
28B			x INHIBIT 162.000		Canadian CG ContinuousMarine Broadcast (CMB)Service
60 x x 156.025 160.625					Public Correspondence(Marine Operator)
61 x	156.075 160.675				Public Correspondence(Marine Operator)

No. can.	É.-U. INT CAN TRANS RÉCEP				Type de canal/Nom
61A x 156	.075 15	6.075				Canadian Coast Guard: West CoastCommercial Fishing: East Coast
62 x 156.1	25 160	725				Public Correspondence (Marine Operator)
62A x 156	.125 15	6.125	Canadian Coast Guard
63 x 156.1	75 160	775				Public Correspondence (Marine Operator)
63A x x 15	6.175	156.175	VTS,	Port Operations
64 x x 15	6.225	160.825				Public Correspondence (Marine Operator)
64A x 15	6.225	156.225				Canada: Commercial Fishing Only
65 x 156.2	75 160	875				Public Correspondence (Marine Operator)
65A x x 15	6.275	156.275				Port OperationsCanada: Towing West Coast
66 x 156.3	25 160	925				Public Correspondence (Marine Operator)
66A x x 15	6.325	156.325				Port OperationsCanada: 1 Watt Only
67	x	xx	156.375	156.375		US: Commercial, Bridge-to-Bridge, VTS in some areasCanada: Search and Rescue, Commercial in some areas, Non-Commercial on West Coast
68	x	xx	156.425	156.425	Non -Commercial
69	x	xx	156.475	156.475		Non-CommercialCanada: Commercial East Coast. Non-Commercial West Coast
70	x	xx	156.525	156.525		DSC (Digital Selective Calling) Only. No Voice Communications Allowed
71	x	xx	156.575	156.575		US: Non-CommercialCanada: Ship Movement West Coast, Non-Commercial East Coast
72	x	xx	156.625	156.625		Non-Commercial (Ship-to-Ship)

No. can.	É.-U.	INT CAN	TRANS RÉCEP	Type de canal/Nom
73 x x x 1	56.675	156.675	Port Operations
74 x x x	156.725	156.7	25 Port Operations
75 x x x 1	56.775	156.775	Port Operations (1 Watt Only)
76 x x x 1	56.825	156.825	Port Operations (1 Watt Only)
77 x x x 1	56.875	156.875	Port Operations (Ship-to-Ship)
78 x 156.9	25 161	525 Port Operations
78A x		x 156	925 156.925 Non-Commercial, Inter-Ship
79 x 156.9	75 161	575 Port Operations
79A x		x 156	9750 156.975 Commercial, Inter-Ship
80 x 157.0	25 161	625 Port Operationsx
80A x		x 157	025 157.025 Commercial, Inter-Ship
81 x 157.0	75 161	675 Port Operations
81A x		x 157	075 157.075		Government, Canadian Coast Guard
82 x 157.1	25 161	725 Port Operations
82A x		x 157	125 157.125		Government, Canadian Coast Guard
83 x 157.1	75 161	775 Port Operations
83A x		x 157	175 157.175 Coast Guard
83B			x INHIBIT 161.775		Canadian CG Continuous Marine Broadcast (CMB) Service
84 x x x	157.225	161.825			Public Correspondence (Marine Operator)
85 x x x 1	57.275	161.875			Public Correspondence (Marine Operator)
86 x x x 1	57.325	161.925			Public Correspondence (Marine Operator)
87A x x x	157.375	157.375			Public Correspondence (Marine Operator)
88A x x 1	57.425	157.425			Public Correspondence (Marine Operator)
1019	x x 1	56.950	156.950 Commercial
1020	x x 1	57.000	157.000 Port Operations
1078	x x 1	56.925	156.925 Non-Commercial, Inter-Ship
1079	x x 1	56.975	156.975 Commercial, Inter-Ship
2019		x 161.550	161.550 Commercial
2020		x 161.600	161.600 Port Operations
2078		x 161.525	161.525 Port Operations
2079		x 161.575	161.575 Port Operations

CANAUX ET FRÉQUENCES MÉTÉOROLOGIQUES (ÉTATS-UNIS, CANADA, ET INTERNATIONAL)

No. can.	Fréq. récep.	Non affiché
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.	5000 162.500 MHz
WX07 162.	5250 162.525 MHz
WX08 161.	6500 161.650 MHz
WX09 161.	7750 161.775 MHz
WX10 163.	2750 163.275 MHz

CODES DES ÉVÉNEMENTS "S.A.M.E." (ENCODAGE DES MESSAGES D'UNE RÉGION SPÉCIFIQUE)

Types d'événements

QUESTIONS? Visit our website at www.uniden.com.