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BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
When you receive a Selcall, your
station sends a revertive tone (to alert
the calling station that its call was
received), an audible alarm sounds,
the mute (squelch) (if selected) opens
and the display shows who the call
is from.
The audible alarm will sound for 60 seconds and then time out. To cancel the
alarm before the time out period and to acknowledge the call, press the PTT
button or tap
Ok
. When the audible alarm times out, the call received icon
displays
p
and a periodic audio reminder is emitted.
For details of previously received Selcalls, press
and then tap
to dis-
play the Call History screen. Refer to the Call History section on page 47.
Receiving Allcalls, Group Calls and Sub-group Calls
Stations can send a Selective Call that will alert different groupings of mobiles
as follows:
In four digit format
Allcall - A station sending X000 will be received by stations X000 - X999 (up to
890 stations*)
Group call - A station sending XX00 will be received by stations XX00 - XX99
(up to 89 stations*)
Sub-group call - A station sending XXX0 will be received by stations XXX0 -
XXX9 (up to 9 stations*)
In six digit format
Allcall - A station sending XXX000 will be received by stations XXX000 -
XXX999 (up to 890 stations*)
Group call - A station sending XXXX00 will be received by stations XXXX00 -
XXXX99 (up to 89 stations*)
Sub-group call - A station sending XXXXX0 will be received by stations XXXXX0
- XXXXX9 (up to 9 stations*)
Содержание 4050 HF SDR
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