Midland Handheld VHF Marine Transceiver, Руководство пользователя

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Page 12 of 24
5 S
TANDARD FUNCTIONS
5.1 Turning Ocean on/off
To turn on the transceiver, turn the ON / OFF / VOLUME knob clockwise until it clicks on: the LCD display will come on,
and you will hear a beep (acoustic signal).
The LCD display backlighting will automatically turn off after approx. 10 seconds in order to save energy, though the display itself
will remain active.
To turn off the transceiver, turn the knob counter-clockwise until you hear another click.
5.2 Volume regulation
Bring the ON / OFF / VOLUME knob to medium. Once the transceiver receives a signal, adjust the volume to a
comfortable level. If no signal is received, use the /M button as described in par. 5.5.
5.3 Selecting a channel
Press the or buttons respectively to scroll up or down through the marine channels until finding the desired
channel. To scroll quickly through the channels, hold down the or button until you reach the desired channel.
The marine band does not include some channel numbers. Refer to the frequency table in Chapter 11. Furthermore, channels may
have a frequency reception that is different from the transmission one (duplex channels) or it is the same (simplex channels).
Normally, communication between vessels can only take place on simplex channels.
!
Your transceiver is preset on international channels. Depending on the country you are in, it is your responsibility to
select INT or USA channels, depending on the local regulations in order to avoid interference. For further details, refer to
par. 6.4.
5.4 Transmission and reception
During transmission and reception, ensure the antenna is as vertical as possible and is free from obstacles in the direction of your
party.
5.4.a Reception
When the PTT is not pressed, the radio is in reception and is ready to receive incoming communication on the currently
tuned channel (stand-by). If you are not receiving communications in stand-by and have not activated any commands for
at least 10 seconds, the display will flash
Power Saver , indicating that the power saver function has been automatically
activated. The radio will remain ready to receive signals. In this case:
•
The B
USY
icon will appear on the display, along with the icon, which indicates the strength of the incoming signal (the
number of bars being proportional to the strength of the signal).
•
The device which silences the audio in the absence of signals (squelch) will automatically disable. If reception happens to be
broken, try to use the monitor function as described in par. 5.5.
5.4.b Transmission
The PTT (push to talk) button is located on the top left of your Ocean. To transmit:
1) Ensure the channel you’ve selected is not a reception-only channel (if it is, the transmission will be disabled) and
that no one else is talking (this will appear on your display as the
B
USY
icon).
2) Hold down the PTT button: will appear on the display, and the icon will indicate your relative
transmission power (the number of bars is proportional to your relative transmission power).
3) Wait a second, then speak in a normal voice, facing the transceiver’s microphone at a distance of approx. 5 cm.
4) When you have completed your message, release the PTT button: and will disappear from the display
and the transceiver will return to reception mode.
Obviously, you can only communicate with stations that are tuned on the same channel.
If the B
USY
icon appears on the display, but you don’t hear anything, you may have accidentally turned the volume to the minimum
level.