A SERVICE OF

logo

Open as PDF
next previous
8 FT-857 Operating Manual
POWER CONNECTIONS
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.
INSTALLATION
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
t
e
n
n
a
T
o
1
4
4
M
H
z
/
4
3
0
M
H
z
A
n
t
e
n
n
a
Supplied DC Cable
T
o
H
F
/
5
0
M
H
z
A
n
t
e
n
n
a
T
o
1
4
4
M
H
z
/
4
3
0
M
H
z
A
n
t
e
n
n
a
V
A
0
0
5
5
10
20
15
30
20
40
CONTINUOUS CURRENT 25A
OVERLOAD
POWER
ON
OFF
FP-1030A
RED
BLACK
FUSE: 25A