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Page 18 FT-897 OPERATING MANUAL
INPUT Jack
This is the DC power supply connection for the trans-
ceiver, used when operating the transceiver with an ex-
ternal power supply. Use the supplied DC cable to con-
nect this jack to the car battery or DC power supply,
which must be capable of supplying at least 22A @ 13.8
VDC. For base station operation, the optional FP-30
External AC power supply may be attached to the bot-
tom of the transceiver and connect the output pigtail of
the FP-30 to this jack.
GND Terminal
For best performance and safety, this Ground lug may
be connected to a good earth ground using a short, heavy,
braided cable.
CAT/LINEAR Jack
This 8-pin mini-DIN jack is used for connection to the
FC-30 External Automatic Antenna Tuner or ATAS-100/
-120 Active-Tuning Antenna System. It is also used for
interfacing to a personal computer for control of the trans-
ceiver using the CAT system, and for interconnection
to the VL-1000 Linear Amplifier.
ACC Jack
This 3.5-mm 3-pin jack accepts external ALC (Automatic
Level Control) voltage from a linear amplifier on the tip
connection, and accepts a “Transmit Request” command
on the ring connection. The main shaft is the ground re-
turn.
The “TX Request” connection, when shorted to ground,
puts the FT-897 into the transmit mode, and sends out a
steady CW carrier, for linear amplifier or manual an-
tenna tuner adjustment.
REAR PANEL CONNECTORS
KEY Jack
This 3.5-mm, 3-pin jack is used for connection to a CW
keyer paddle or a straight key.
EXT SPKR Jack
This 3.5-mm, 2-pin jack provides variable audio output
for an external speaker. The audio output impedance at
this jack is 4 ~ 16 and the level varies according to
the setting of the front panel’s AF control.
CAT
/TUNER
+13.8V
BAND C
RESE
T
TX INH
RX D
TX D
TX GND
GND
LINEAR
+13.8V
BAND C
BAND D
TX INH
BAND B
BAND A
TX GND
GND
DATA Jack
This 6-pin, mini-DIN jack accepts AFSK input from a
Terminal Node Controller (TNC); it also provides fixed-
level Receiver Audio Output, Push-To-Talk (PTT),
Squelch Status, and ground lines.
DATA
DATA OUT
1200bps
DATA OUT
9600bps
SQL
GND
PTT
DATA IN
144/430 MHz Antenna Jack
Connect your 144 and/or 430 MHz antenna’s 50 co-
axial cable to this M-type (“SO-239”) connector.
HF/50 MHz Antenna Jack
Connect your HF and/or 50 MHz antenna’s 50 co-
axial cable to this M-type (“SO-239”) connector.
SIGNAL GND
EXT ALC GND
TX REQ
20


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