Vl-1000 Linear Amplifier Interconnections; Interfacing To Other Linear Amplifier - Yaesu FT-450D Operation Manual

VL-1000 L
Be sure that both the FT-450D and VL-1000 are turned off, then follow the installation recommendations con-
tained in the illustration.
Note
Ì Please refer to the
VL-1000 Operating
Manual for details re-
garding amplifier op-
eration.
Ì Please do not at-
tempt to connect or
disconnect coaxial
cables when your
hands are wet.
I
The T/R control line is a transistor "open collector" circuit, capable of handling positive amplifier relay coil volt-
ages of up to +50V DC and current of up to 400 mA. If you plan on using multiple linear amplifiers for different
bands, you must provide external band-switching of the "Lin Tx" relay control line from the "TX GND OUT" line
at the LINEAR jack.
Important Note!
Do not exceed the maximum volt-
age or current ratings for the "TX
GND OUT" line at the LINEAR jack.
This line is not compatible with
negative DC voltages, nor AC volt-
ages of any magnitude.
Most amplifier control relay systems
require only low DC voltage/current
switching capability (typically, +12V
DC at 25 ~ 75 mA), and the switch-
ing transistor in the FT-450D will eas-
ily accommodate such amplifiers.
Linear Amplifier Connection Cable ( SCU-28 )
Color Code Information
LINEA Jack ( Pin Number )
Wire Color
Orange 1
Yellow 2
Green 3
Red 4
White 5
Blue 6
Violet 7
Brown 8
Black 9
Gray 10
Light Blue Case
FT-450D O
PERATION
A
INEAR MPLIFIER
ANT
INPUT
DC 13.8V
22A
EXT
GND
SPKR
DATA TUNER LINEAR CAT
To link the FT-450D and VL-1000
Power switches, set the VL-1000 RE-
MOTE switch to the "ON" position.
O
NTERFACING TO THER
Function
+13.8 V
TX GND OUT
GND
BAND DATA A
BAND DATA B
BAND DATA C
BAND DATA D
TX INH
EXT ALC IN
TX REQ IN
Shield
M
ANUAL
I
NSTALLATION
I
NTERCONNECTION
ANTENNA CABLE ( Not Supplied )
Set the front panel's
INPUT switch to the
"INPUT2".
ANT 1
ANT 2 BAND DATA 1
ANT 3
ANT 4
BAND DATA 2
CT-118 CONNECTION CABLE (Option)
L A
INEAR MPLIFIER
INPUT 1
REMOTE
PTT 1
ON
OFF
PTT 2
INPUT 2
ALC 1
CONTROL
ALC 2
DC48V IN
GND
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