Uniden

UM435BK

A fixed-mount VHF marine radio with selectable 1 or 25 watt output, a dedicated distress button, and USA/Canada/International channel coverage.

Brand: Uniden
Category: Marine
Manufacturer: Uniden website ↗
Availability: Enquire for lead time

Technical

Specifications

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, Channel DOWN, CALL-MENU, WX-MEM, CLR-SCAN, 16/9-TRI, and DISTRESS
Connectors and Cables	Antenna, accessory, and DC power
Size	H 75 mm x W 167 mm x L 129 mm (without Heat Sink) / H 2.95 in x W 6.58 in x L 5.08 in
Weight	1.0 kg (2.2 pounds)
Supply Voltage	Nominal 13.8V DC, negative ground (10.5 VDC to 16.0 VDC)
Standard Accessories	Mounting bracket and hardware, microphone hanger
Antenna Impedance	50 Ω nominal
Microphone	Rugged 2 kΩ condenser mic element with coiled cord
Speaker	1.77 inch, 8 Ω
Operating Temperature Range	-20°C to +50°C (-4°F to +122°F)
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)
Transmitter Power Requirement	25 watts output: 6A@13.8V DC
Modulation	±5 kHz deviation
Hum and Noise Signal-to-Noise	50 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	-45 dBm @ Hi, -55 dBm @ Lo
Output Power Stabilization	Built-in automatic level control (ALC)
Transmitter Frequency Range	156 to 163 MHz
Frequency Stability	±10 ppm @ -20°C to +50°C
Receiver Frequency Range	156 to 163 MHz
Receiver Sensitivity	0.25 μV for 12 dB SINAD (nominal)
Receiver Circuit	Dual Conversion Super Heterodyne PLL (Crystal for DSC)
Squelch Sensitivity	0.2 μV Threshold
Spurious Response	75 dB (nominal)
Adjacent Channel Selectivity	70 dB @ ±25 kHz (nominal)
Audio Output Power	2.5 watts (10% Distortion, 8 Ω load)
Receiver 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)

Overview

About this product

The UM435BK is a fixed-mount VHF marine radio with a full dot matrix LCD display and selectable 1 watt or 25 watt transmit power output. It covers the 156 to 163 MHz marine band with USA, Canada and International channel sets, scan and triple-watch modes, weather channel access, and a dedicated DISTRESS button, alongside status indicators for GPS and battery condition. It runs on a nominal 13.8 Vdc supply (10.5 to 16.0 Vdc), weighs 1.0 kg, and is built to meet EIA shock and vibration standards RS152B and RS204C across an operating range of minus 20 to plus 50 degrees C.

Questions

Frequently asked questions

What output power does the Uniden UM435BK offer?

It offers 1 watt or 25 watts, user selectable.

What frequency range does the UM435BK cover?

It transmits and receives across 156 to 163 MHz.

What operating temperature is the UM435BK rated for?

It's rated for -20C to +50C (-4F to +122F).

How much does the UM435BK weigh?

It weighs 1.0 kg (2.2 pounds).

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