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Yaesu FT-897D Manual

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Page 36 FT-897D OPERATING MANUAL
DCS Operation
Another form of tone access control is Digital Code Squelch,
or DCS. It is a newer, more advanced tone system that is
less susceptible to false triggering than CTCSS. A DCS En-
coder/Decoder is built into your transceiver, and operation
is very similar to that described above for CTCSS.
1. Press the
[
F
]
key momentarily, then rotate the MEM/
VFO CH knob, as needed, until Multi Function Row
“e”
[
TON, -----, TDCH
]
appears on the display.
2. Press the
[
A
](
TON
)
key four times to activate the DCS
Encoder/Decoder (the “DCS” icon will appear on the
display). The receiver will remain muted until a match-
ing DCS code is received on an incoming signal.
3. Press and hold in the
[
B
]
key for one second. This in-
stantly recalls Menu Mode No-033
[
DCS CODE
]
.
4. Rotate the DIAL to select the desired DCS code, then
press and hold in the
[
F
]
key for one second to save new
setting and exit to normal operation.
FM TRANSMISSION
TRANSMITTER OPERATION
Split Tone Operation
The FT-897D can be configured in a “Split Tone” configu-
ration via the Menu mode.
This allows you to encode a CTCSS Tone, decode a DCS
code, encode (only) a DCS code, etc.
1. Press and hold in the
[
F
]
key for one second to enter the
Menu mode.
2. Rotate the MEM/VFO CH knob to select Menu Mode
No-079
[
SPLIT TONE
]
.
3. Rotate the DIAL knob to select “ON” (to enable the Split
Tone feature).
4. Press and hold in the
[
F
]
key for one second to save the
new setting and exit to normal operation.
When the Split Tone feature is activated, the Multi Function
Row “e” selection changes to
[
ENC, DEC, TDCH
]
. So, you
can set the desired encoder (by pressing
[
A
](
ENC
)
key, re-
peatedly, if necessary) and decoder (by pressing the
[
B
](
DEC
)
key) separately.
When the Split Tone feature is activated, you can see the
following additional parameters.
T-T:Encodes a CTCSS Tone and Decodes a CTCSS Tone
T-D:Encodes a CTCSS Tone and Decodes a DCS Code
T :CTCSS Tone Encode only
D :DCS Encode only
D-T :Encodes a DCS Code and Decodes a CTCSS Tone
D-D:Encodes a DCS Code and Decodes a DCS Code
D:DCS Decode only
T :CTCSS Tone Decode only
Split Tone Frequency or DCS Code Setup
1. Press and hold in the
[
A
](
ENC
)(if you use CTCSS)
or
[
B
](
DEC
)(if you use DCS)
key for one second. This in-
stantly recalls Menu Mode No-083
[
TONE FREQ
]
or No-
033
[
DCS CODE
]
.
2. Press the MEM/VFO CH knob momentarily, then rotate
the DIAL knob to select the “R” option. This is the tone
you Receive, i.e. the “Decode” tone.
3. Rotate the DIAL knob to select the desired Decode
CTCSS frequency (or DCS code).
4. Press the MEM/VFO CH knob momentarily, then rotate
the DIAL knob to select the “T” option. This is the tone
you Transmit, i.e. the “Encode” tone.
5. Rotate the DIAL knob to select the desired Encode
CTCSS frequency (or DCS code).
6. Press and hold in the
[
F
]
key for one second to save the
new setting and exit to normal operation.
5. Press the
[
A
](
TON
)
key once to cancel DCS operation
(the “DCS” icon will disappear).
DCS Search Scanning
In operating situations where you don’t know the DCS code
being used by another station, you can command the radio
to listen to the incoming signal and scan in search of the
code being used.
To scan for the DCS code in use:
1. Press the
[
F
]
key momentarily, then rotate the MEM/
VFO CH knob, as needed, until Multi Function Row
“e”
[
TON, -----, TDCH
]
appears on the display.
2. Press the
[
A
](
TON
)
key to activate DCS (the “DCS” icon
will appear on the display).
3. Press the
[
C
](
TDCH
)
key to start scanning for the in-
coming DCS code.
4. When the radio detects the cor-
rect DCS code, it will halt on that
code, and audio will be allowed
to pass.
5. The DCS code detected will be stored as the “current”
code, so it may be used for memory storage purposes,
and you may now exit to normal operation.
DCS CODE
023 025 026 031 032 036 043 047 051 053
054 065 071 072 073 074 114 115 116 122
125 131 132 134 143 145 152 155 156 162
165 172 174 205 212 223 225 226 243 244
245 246 251 252 255 261 263 265 266 271
274 306 311 315 325 331 332 343 346 351
356 364 365 371 411 412 413 423 431 432
445 446 452 454 455 462 464 465 466 503
506 516 523 526 532 546 565 606 612 624
627 631 632 654 662 664 703 712 723 731
732 734 743 754
… 38 …


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