29
Nothing
Comes Close to a Cobra
®
VHF Marine Radio Protocols
Operating Your Radio
Standby/Receive
and Transmit
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.
Battery Power
icon is held at the level it was at
during receive.
S
X
LO
MEDHI
A
B
I
U
Low Power Mode
SAM
ATIS
VOX
LO
MEDHI
T
R
A
B
X
C
I
U
Check Channel Number
Talk Button
VHF Marine Radio Protocols
Operating Your Radio
Standby/Receive
and Transmit
28 English
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.
NOAA Weather Channels and Alert
•
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.
V
T
R
A
G
X
Transmit (Tx) Icon
V
T
R
A
G
X
Receive (Rx) Icon
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