Vertex Standard VX-4500 Operating Manual page 25

ARTS (Auto Range Transpond System)
TM
This system is designed to inform you when you and another ARTS
station are within communication range.
During ARTS operation, when the radio receives an incoming ARTS
TM
a short beep will sound, and "IN SERV" ("In Service") will be indicated on the
display for 2 seconds
radio senses that no signal has been received; a short triple-beep will sound, and
"OUT SERV" ("Out of Service") will be displayed on the display for 2 seconds
you subsequently move back into communication range, as soon as the other sta-
tion transmits, a short beep will sound and "IN SERV" will be indicated again on
the display for 2 seconds
VX-4500/-4600 S
a
dVanced
. If you move out of range for more than two minutes, your

.

O
erieS perating
o
peratIon
M
anual
-equipped
TM
signal,
TM
. If

: VX-4600 only.
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