Operation Manual

Page 8 FT-450 OPERATION MANUAL
R EAR P ANEL J ACKS
INPUT
DC 13.8V
22A
ANT
GND
EXT
SPKR
CATLINEARTUNERDATA
DC IN Jack
This is the DC power supply
connection for the transceiver.
Use the supplied DC cable to
connect directly to the car bat-
tery or to a DC power supply,
which must be capable of sup-
plying at least 22 A @13.8
VDC.
ANT Jack
Connect your antenna here, using a type-M (PL-259) co-
axial connector and 50 Ohm coaxial feedline.
Warning!: High Power RF voltage is present at the TX RF
section of the transceiver while transmitting. Absolutely!
Do not touch the TX RF section while transmitting.
DATA Jack
This 6-pin input/output jack provides receiver audio and squelch sig-
nals, and accepts transmit (AFSK) audio and PTT control, from an
external packet TNC.
LINEAR Jack
This 10-pin output jack pro-
vides band selection data,
which may be used for control
of the optional VL-1000 Solid-
State Linear Amplifier.
CAT Jack
This 9-pin serial DB-9 jack allows ex-
ternal computer control of the FT-
450. Connect a (straight) serial cable
here and to the RS-232C COM port
on your personal computer (no ex-
ternal interface is required).
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 Ohms and
the level varies according to the setting of the front panel’s
[
AF GAIN
]
knob. Inserting a plug into this jack disables the internal loudspeaker.
GND Terminal
For safety and optimum performance, use this termi-
nal to connect the transceiver to a good earth ground.
Use a large diameter, short braided cable for making
ground connections. Refer to page 12 for other notes
about proper grounding.
SQL OUT
 FSK IN
 GND DATA IN
 DATA PTT
DATA OUT
 TXD
 TX GND OUT +13.8V OUT
 GND
 TUNER SENSE
 TX INH IN
 RXD
 RESET OUT
BAND DATA-A (LSB)
TX GND OUT
+13.8V OUT
TXREG IN
GND
BAND DATA-B
BAND DATA-C
BAND DATA-D (MSB)
TX INH IN
EXT ALC IN
CTS RTS
GND
SERIAL IN
SERIAL OUT
Connect to 

 Connect to 

N/A
 Connect to 

TUNER Jack
This 8-pin jack is used for Connection to
the FC-30 or FC-40 External Automatic
Antenna Tuner.
COOLING FAN
Turns at low speed in receive mode.
Turns at high speed when the temperature begins to
rise or in transmit mode.
(viewed from rear panel)
(viewed from rear panel)
(viewed from rear panel)
(viewed from rear panel)
(viewed from rear panel)
+
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