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

VL-1000 L
Be sure that both the FT-450 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 regarding amplifier operation.
Ì Please do not attempt to connect or disconnect coaxial cables when your hands are wet.
INPUT
DC 13.8V
22A
DATA TUNER LINEAR
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-450 will eas-
ily accommodate such amplifiers.
FT-450 O
A
INEAR MPLIFIER
ANTENNA CABLE ( Not Supplied )
ANT 1
ANT 2
ANT
ANT 3
ANT 4
EXT
GND
SPKR
CAT
CT-118 CONNECTION CABLE (Option)
O
NTERFACING TO THER
ANT
INPUT
DC 13.8V
22A
EXT
SPKR
DATA TUNER LINEAR CAT
GND
EXT ALC IN
TX GND OUT
M
I
NSTALLATION
I
NTERCONNECTION
To link the FT-450 and VL-
1000 Power switches, set
the VL-1000 REMOTE
switch to the "ON" position.
REMOTE
ON
OFF
BAND DATA 1
BAND DATA 2
L A
INEAR MPLIFIER
RF OUT RF IN
GND
INPUT 1
PTT 1
PTT 2
INPUT 2
ALC 1
CONTROL
ALC 2
DC48V IN
GND
GND FUSE AC
E ALC E RY
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