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Some channels (for example, channels 13 and 67) limit the transmission power to 1W.
When you tune to a limited-power channel, the radio automatically switches to 1W.
Changing the Channel
Press the ▲ or ▼ keys briefly to scroll through the channels one channel at a time. Press
and hold the ▲ or ▼ keys to quickly scroll through the channels.
Saving the Channel into Memory
1.
When you are on a channel you want to save to memory, press ◄ or ► to scroll
through the soft keys until you find the MEM soft key.
2.
Select the MEM soft key. The channel you are on is saved to memory and the MEM
icon displays
3.
Select the MEM soft key when you are on a saved channel to delete that channel
from memory.
Using the LED Light
This feature turns on an LED light. If you press
high-intensity LED strobe on your radio. The LED flashes "S O S" in international Morse
Code.
NOTE: Your radio operates normally when the SOS strobe is activated.
1.
Press
LOCK
2.
Press
LOCK
3.
Press
LOCK
DIGITAL SELECTIVE CALLING FEATURES (DSC)
WHAT IS DSC?
Digital Selective Calling (DSC) is a standard that allows you to call other ships using their
unique identification code (the Maritime Mobile Service Identity or MMSI number), just
like you would call a phone number. To call another station, just enter that station's MMSI
number and choose the voice channel you want to talk on. The radio uses channel 70 to
transmit your MMSI number to the other station along with the voice channel you requested.
If the other station accepts your call, both radios automatically switch to the requested voice
channel so you can talk to the other station.
DSC provides a system for automated distress calls. At the touch of a key, the radio can
transmit your MMSI number, the nature of your distress, and your current position based on
data from your GPS receiver. The radio repeats the distress call every few minutes until it
receives an acknowledgement.
The DSC standard dedicates a VHF channel—channel 70—to digital transmissions only.
Since digital transmissions require less bandwidth voice transmissions, channel 70 avoids
the problems of busy voice channels.
MMSI NUMBERS
In order to use DSC features, you must be assigned an individual User MMSI number and
program that number into your radio.
twice. The LED turns on like a flashlight.
again (three times). The LED blinks in a Morse code SOS pattern.
again (four times). The LED goes off.
Uniden MHS335BT Radio Owner's Manual
twice, the radio turns on the
LOCK
E-29
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