8
FT-857 Operating Manual
P
OWER
C
ONNECTIONS
The DC power connector for the
FT-857
must only be connected to a DC source providing
13.8 Volts DC (±15%), and capable of at least 22 Amperes of current. Always observe
proper polarity when making DC connections:
The
Red
DC power lead connects to the
Positive
(
+
) DC terminal; and the
Black
DC power
lead connects to the
Negative
(
–
) DC terminal.
In mobile installations, noise pickup may be minimized by connecting the DC cable directly
to your vehicle’s battery, rather than to the ignition switch or “accessory” circuitry. Direct
connection to the battery also provides the best voltage stability.
I
NSTALLATION
12V Battery
Cigarette Lighter Plug
Fuse Box
FUSE: 25A
Supplied DC Cable
RED
BLACK
T
o
H
F
/5
0
M
H
z
A
n
te
n
n
a
T
o
1
4
4
M
H
z
/4
3
0
M
H
z
A
n
te
n
n
a
Supplied DC Cable
T
o
H
F
/5
0
M
H
z
A
n
te
n
n
a
T
o
1
4
4
M
H
z
/4
3
0
M
H
z
A
n
te
n
n
a
V
A
0
0
5
5
10
20
15
30
20
40
CONTINUOUS CURRENT 25A
O V E R L O A D
POWER
ON
OFF
FP-1030A
RED
BLACK
FUSE: 25A
