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BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Emergency Calls
All Selcall emergency calls are
transmitted by pressing the
and
buttons together for more
than two seconds. The emergency
call sequence commences when the
buttons are released.
The action of the emergency call depends on how the Transceiver has been pro-
grammed. For example:
•
Selective Call alarm that only transmits on the currently selected channel
Transmits the emergency Selcall sequence once on each press of
the
and
buttons.
•
Selective Call alarm that transmits and automatically changes to a selec-
tion of channels
Transmits the emergency Selcall sequence twice on each channel pro-
grammed as an emergency channel.
•
Royal Flying Doctor Service (RFDS) alarm
Two-tone alarm 880 Hz + 1320 Hz continuous (Australian use only) –
alerts the Royal Flying Doctor Service on RFDS channels.
The RFDS alarm will continue transmitting for ten seconds even if you
have released the
and
buttons.
To cancel the RFDS alarm, press the
PTT
button or the
button.
Note: A momentary press of the
and
buttons initiates an RFDS
alarm test mode which emits the audio tones but does not transmit them.
Another momentary press of the
and
buttons or
PTT
cancels the
RFDS alarm test mode.
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call.
Note: After the emergency call has been activated, there is no indication that an
alarm is being sent for security purposes.
Содержание 4050 HF SDR
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