Rear Panel Connectors - Yaesu FT-818ND Operating Manual

①
:
INPUT DC13.8V
GND
INPUT:13.8V
This is the DC power supply connection for the transceiver, used when operating the
transceiver with an external power supply. Use the supplied DC cable to connect this
jack to the car battery or base station DC power supply, which must be capable of
supplying at least 3A @ 8 - 16 VDC. This jack is also used for battery charging (when
using the supplied SBR-32MH battery pack).
GND Terminal
For best performance and safety, this Ground lug may be connected to a good earth
ground using a short, heavy, braided cable.
KEY Jack
This 3.5-mm, 3-pin jack
is used for connection to
a CW keyer paddle or a
straight key.
DATA Jack
This 6-pin, mini-DIN jack accepts AFSK input from a Termi-
nal Node Controller (TNC); it also provides fixed-level Re-
ceiver Audio Output, Push-To-Talk (PTT), Squelch Status,
and ground lines.
ACC Jack
This 8-pin, mini-DIN jack provides a closure to ground
during transmission, ALC, a transmitter-inhibit pin, and
"band data" for connection to an external amplifier. It is also
used for Transceiver-to Transceiver Cloning and for control
of this transceiver using a personal computer.
ANT Jack
Connect your HF and/or 50 MHz antenna's 50-ohm coaxial cable to this M-type ("SO-
239") connector. In its default setting, this jack does not function on 50/144/430 MHz
bands. If you want to enable this jack on 50/144/430 MHz bands, recall and change
the settings of Menu #07.
②
Jack (
DOT DASH COMMON
When connecting an electronic keyer paddle

Rear Panel Connectors

③ ④ ⑤
KEY DATA ACC
)
DOT DASH
COMMON
ANT
⑥
KEY
KEY NC GND
When connecting a single straight key
DATA OUT
SQL
1200bps
DATA OUT
PTT
9600bps
GND DATA IN
ALC
TX INH BAND DATA
RX D GND
TX D
+13.8V
TX GND
GND
15