Cobra MR-HH125 Datasheet download pdf (Page 12)

VHF Marine Radio ProtocolsOperating Your Radio VHF Marine Radio ProtocolsOperating Your Radio

Nothing Comes Close to a Cobra

English

NOAA All Hazards/Weather

Radio and Alert

Standby, Receive

and Transmit

Standby, Receive and Transmit

•

Marine Standby and Receive (Rx) Mode

Marine Standby mode is the default mode for the radio whenever it is turned On.

From this mode, you can change current settings by becoming familiar with the

different key functions that are active in Marine Standby mode. While in Marine

Standby mode, the user will be able to transmit by pressing the Push to Talk (Talk)

button. Users will hear signals on the selected channel(s) in Receive (RX) mode and

can hear alerts broadcast by the Coast Guard and NOAA.

NOTE

Coast Guard alerts are broadcast on Channel 16 and you need to have the WX

Alert turned On to receive NOAA weather alerts. While in Marine Standby mode,

you will receive any messages sent on the channel to which you are tuned.

Transmit (Tx) Mode

Transmit (Tx) mode gives you the ability to interact with safety services, other vessels

and shore stations. When you use this capability, be sure to follow the procedures and to

observe the courtesies that govern its use so everyone benefits. See Appendix to help

you select the proper channels.

To Transmit a Message:

1. Check to see that your radio is set to a proper channel for

the type of message you plan to send.

2. Toggle to the Low Power setting.

3. With the microphone about 2 in. [51 mm] from your

mouth, press and hold the Talk button and speak into the

microphone. The Transmit icon will appear on the LCD.

4. Release the Talk button when you are finished

speaking. Your radio can only operate in either

Transmit (Tx) or Receive (Rx) mode at any

given time. You will not hear the response to

your message unless the Talk button is released.

If the Battery Power icon begins blinking on the

LCD when the Talk button is pressed, the radio

will NOT transmit.

Low Power Mode

Check Channel Number

Talk Button

WX Standby Display

NOAA Weather Channels

Monitoring the weather will probably be a frequent use of your radio. NOAA provides

continuous, around-the-clock broadcasts of the latest weather information. Taped

weather messages run every four (4) to six (6) minutes and are revised every two (2)

or three (3) hours, or as needed. The Coast Guard also announces weather and other

safety warnings on Channel 16. Smart boaters keep an eye on safety and an ear to

the radio — and never let the weather catch them unaware.

NOAA Emergency Weather Alert

In the event of a major storm or other weather condition requiring vessels at sea

or on other bodies of water to be notified, NOAA broadcasts a 1050 Hz tone that

receivers such as your CobraMarine VHF radio can detect and warn you of a weather

alert condition. When the Weather Alert mode on your radio is On, this signal will

produce a loud tone from the speaker in the radio and will automatically switch to

the alerting weather channel so the alert broadcast can be heard.

NOAA Test Alert System

To test this system, NOAA broadcasts the 1050 Hz signal every Wednesday sometime

between 11 a.m. and 1 p.m. in each local time zone. Any receiver that can detect the

weather alert tone may use this service to verify that this system is functioning properly.

These signals will be received in Marine or Weather Standby modes as described below.

Weather (WX) Standby Mode

To enter the WX Standby mode, press and hold the

Power Level/Weather button. All common operating

functions of the radio will work the same in WX Standby

mode as they do in the normal Marine Standby mode. The

radio will be monitoring for all alerts in the background when

in the WX Standby mode.

NOTE

If the Talk button is held down for five (5) minutes,

the radio will automatically sound a series of beeps

and cease transmitting to prevent unwanted signal

generation and battery drain. As soon as the Talk

button is released, it can be pressed again to

resume transmission.

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Cobra MR-HH125 Datasheet Page 12

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