Download FT-250 V4 Programmer Help

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FT-250 V4 Programmer Help
Auto Range Transponder System
The Automatic Range Transponder System (ARTS) uses DCS signaling to inform you
and another ARTS-equipped station that they are within range for communication. You
need not have two matching radios to use this function. Any two radios equipped with
the ARTS function can be used.
ARTS is used in simplex mode. The radio must receive on the same frequency as that
transmitted by the other radio.
When setting up a channel for ARTS (VFO or memory),
Enter the receive frequency
Set the Offset Direction to SIMPLEX,
Set Tone Mode to DCS,
Set the DCS code to the same value in each radio.
Besides its value in search and rescue operations, ARTS makes a great "did you hear
me" feature. As long as the two radios show "IN RANGE", you can be sure that the
radio received your audio . Presuming that the volume on the receiving radio is
sufficient, you can be sure that your signal was heard. Especially when driving, the other
operator may not be able to respond immediately to your communication. If ARTS
remains successful, you can be sure that the voice transmission was heard (just as the
ARTS signal is heard).
During the ARTS function, your radio will transmit a signal every 15 (or 25) seconds.
This transmission includes the DCS tone. The receiving radio will hear only the signal
with the tone. An extraneous signal that lacks the tone will not interfere with the ARTS
functionality between these two radios.
The other radio does the same in a comparable time period. As long as the two remain
within range, the displays will show "IN RANGE". Should one of the radios move too far
from the other, three beeps will sound and the display changes to "OUT RANGE". Once
with radios are again within range, a single beep will sound and the display will change
to "IN RANGE". Whether or not you talk, the ARTS function continues until you deactivate it.
During ARTS operation, it is impossible to change the operating frequency or other
settings of the radio. This prevents accidental loss of contact. You must terminate
ARTS operations to resume normal operations including access to menu settings on
the radio. The radio can be turned off even with ARTS engaged. This will cause an outof-range situation for other radios.
© 2013 RT Systems, Inc.