VX-3R/E O
PERATING
M
ANUAL
75
E
MERGENCY
A
UTOMATIC
ID
(
EAI
)
F
EATURE
The Emergency Automatic ID (EAI) feature can be used to aid in searching for persons
who are incapacitated in disasters like earthquakes, especially search-and-rescue person-
nel who may have become injured in a debris field. When using the EAI feature, a searcher
transmits a unique command (CTCSS tone pair), which will automatically cause the in-
jured party’s radio to transmit, so others may perform direction-finding and effect a rescue.
The incapacitated party may not be able to speak or even press the
PTT
switch. The callsign
of the incapacitated person may also be transmitted, to assist the rescue team.
If an emergency group is working in a dangerous area, all members should engage the EAI
feature on their transceivers, so that others can assist a fallen team member, if necessary.
The Emergency Automatic ID (EAI) Feature has two operating modes: (1) Interval mode
and (2) Continuous mode.
In the Interval mode
(when the
VX-3R/E
receives the CTCSS tone pair), the radio will
transmit a loud (0.5 second) beep every 2.5 seconds until the EAI timer expires.
In the continuous mode
, the radio will automatically transmit a continuous signal (with
maximum microphone gain), until the EAI timer expires.
The EIA is activated when the CTCSS tone pair stored in the Receiving Pager Code Memory
(configured via Set Mode Item 61:
PAG.CDR
) is received for 5 seconds on the frequency,
which is stored in Memory Channel “
EAI
”. It is NOT necessary for the incapacitated per-
son to press the
PTT
switch.
A call sign may be stored in the radio and the CW identifier enabled via Set Mode Item 21:
CW ID
. Then, when the EAI feature is activated in the Interval mode, the radio will trans-
mit the callsign once each minute. In addition, the bright LED will blink the call sign in
Morse code. The “callsign” ID can be changed to any desired sequence up to 16 charac-
ters, such as a name. The radio will transmit a loud (0.5 second) beep every 2.5 seconds,
and send the call sign each minute, until the EAI timer expires.
The Emergency Automatic ID (EAI) Feature requires that you:
(1) Store the CTCSS Tone Pair into the Receiving Pager Memory (see page 34 for the
procedure),
(2) Store the desired UHF coordination frequency into Memory Channel “EAI” (see page
42 for procedure). (We suggest using a frequency different from your normal operat-
ing channel.)
(3) Activate the EAI function “Set Mode Item 30:
EIA
” to “
ON
”.
The
VX-3R/E
radio may now be used normally. The EIA function will monitor the EIA
memory channel in the background, and it will be activated when the Pager Memory Tone
Pair is received on the EIA memory channel.
E
MERGENCY
F
EATURE