55
FT-1802M O
PERATING
M
ANUAL
The ARTS™ feature uses DCS signaling to inform both parties when you and another
ARTS™-equipped station are within communications range. This may be particularly use-
ful during Search-and Rescue situations, where is important to stay in contact with other
members of your group.
Both stations must set up their DCS codes to the same code number, then activate their
ARTS™ feature using the command appropriate for their radio. Alert ringers may be acti-
vated, if desired.
Whenever you push the
PTT
switch, or every 25 (or 15) seconds after ARTS™ is activated,
your radio will transmit a signal which includes a (subaudible)
DCS signal for about 1 second. If the other radio is in range,
the beeper will sound (if enabled) and the display will show
“
IN RNG
” as opposed to the out of range display “
OUTRNG
”
in which ARTS™ operation begins.
Whether you talk or not, the polling every 15 or 25 seconds will continue until you de-
activate ARTS™. Every 10 minutes, moreover, you can have your radio transmit your callsign
via CW, so as to comply with identification requirements. When ARTS™ is de-activated,
DCS will also be deactivated (if you were not using it previously in non-ARTS™ operation).
If you move out of range for more than one minute (four pollings), your radio will sense that
no signal has been received, three beeps will sound, and the display will revert to “
OUTRNG
.”
If you move back into range, your radio will again beep, and the display will change back to
the “
IN RNG
” indication.
During ARTS
™
operation, your operating frequency will continue to be displayed, but no
changes may be made to it or other settings; you must terminate ARTS
™
in order to resume
normal operation. This is a safety feature designed to prevent accidental loss of contact due
to channel change, etc.
Basic ARTS
™
Setup and Operation
1. Assign the ARTS™ feature to the microphone’s programmable button ([
P1
], [
P2
], [
P3
],
or [
P4
]), per the discussion on page 63.
2. Set your radio and the other radio(s) to the same DCS code number, per the discussion
on page 25.
3. Press the assigned microphone’s programmable button momentarily. You will observe
the “
OUTRNG
” display on the LCD. ARTS™ operation
has now commenced.
4. Every 25 seconds, your radio will transmit a “polling” call to the other station. When that
station responds with its own ARTS™ polling signal, the display will change to
“
IN RNG
” to confirm that the other station’s polling code
was received in response to yours.
ARTS™
(
A
UTOMATIC
R
ANGE
T
RANSPONDER
S
YSTEM
)
