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Page 13FT-450 OPERATION MANUAL
I
NSTALLATION
VL-1000 LINEAR AMPLIFIER INTERCONNECTION
INPUT
DC 13.8V
22A
ANT
GND
EXT
SPKR
CATLINEARTUNERDATA
ANT 1
ANT 2
ANT 3
ANT 4
REMOTE
ON
OFF
BAND DATA 1
BAND DATA 2
GND
ALC 2
ALC 1
PTT 2
PTT 1
INPUT 1
INPUT 2
CONTROL
DC48V IN
A
N
T
I
N
P
U
T
D
C
1
3
.
8
V
A
N
T
1
H
F
V
e
r
t
i
c
a
l
A
n
t
e
n
n
a
H
F
D
i
p
o
l
e
A
n
t
e
n
n
a
H
F
B
e
a
m
A
n
t
e
n
n
a
A
N
T
2
A
N
T
3
I
N
P
U
T
1
L
I
N
E
A
R
B
A
N
D
-
D
A
T
A
2
G
N
D
G
N
D
D
C
4
8
V
I
N
C
O
N
T
R
O
L
A
L
C
2
CT-118 CONNECTION CABLE
(Option)
ANTENNA CABLE
(
Not Supplied
)
V
P
-
1
0
0
0
V
P
-
1
0
0
0
EERYALC
ACFUSEGND
RF INRF OUT
A
N
T
1
A
N
T
1
H
F
A
n
t
e
n
n
a
I
N
P
U
T
1
G
N
D
G
N
D
INPUT
DC 13.8V
22A
ANT
GND
EXT
SPKR
CATLINEARTUNERDATA
I
N
P
U
T
D
C
1
3
.
8
V
EXT ALC IN
GND
TX GND OUT
INTERFACING TO OTHER LINEAR AMPLIFIER
Be sure that both the FT-450 and VL-1000 are turned off, then follow the installation recommendations con-
tained in the illustration.
Note:
Please refer to the VL-1000 Operating Manual for details regarding amplifier operation.
Please do not attempt to connect or disconnect coaxial cables when your hands are wet.
To link the FT-450 and VL-
1000 Power switches, set
the VL-1000 REMOTE
switch to the “ON” position.
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-450 will eas-
ily accommodate such amplifiers.
15


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