Kantronics KPC-2 - Page 24

5-Pin
Din
Radio
Connector
(KPC-1
-
Packet
Communicator)
5-Pin
Din
o ©
959
Female (Looking at Holes)
Pins
1,
2, 3,
and
Audio
In
must
be
connected
to
your
radio.
Pin
1
-
AFSK
Out
-
white
lead.
This
line
carries
the
AFSK
tones
generated
by
the
TNC
to
the
Audio
Input
(microphone)
line
of
your
transceiver.
If
your
transceiver
provides
a
DC
voltage
on
its
microphone
input,
you
must
isolate
this
voltage
from
the
TNC.
This
is
normally
true
for
hand-held
radios.
(See
the
Interfacing
Hand-Held
Radios
section.)
Pin
2
-
Ground/Shield
-
black
and
stranded
lead.
Connect
the
push-to-talk
ground
and
AFSK
shield
to
this
line.
With
some
transceivers
which
do
not
reference
PTT
and
audio
shielding
to
a
common
ground,
it
may
be
necessary
to
leave
the
AFSK
shield
(braided
wire)
disconnected.
Note:
All
TNC
grounds
are
common.
Pin
3
-
Push-To-Talk
-
Brown
lead.
This
line
controls
the
PTT
line
in
your
transceiver
allowing
the
TNC
to
switch
the
transceiver
from/to
transmit
or
receive.
Connect
directly
to
the
PTT
line
of
the
mic-jack
connector.
(See
the
section
on
Interfacing
Hand-Held
Radios
for
special
notes
concerning
this
pin.)
Audio
in
—
Attach
a
cable
from
the
external
speaker
jack
of
the
transceiver
to
the
Audio
In
jack
on
the
rear
panel
of
the
Packet
Communicator.
Do
not
use
a
headphone
or
—
phone
patch
output
from
your
transceiver.
External
Speaker
Jack
-
This
jack
can
be
used
to
loop
the
audio
through
the
Packet
WA
SR
OE
Use
a
3.5
mm
plug
and
shielded
audio
cable
to
connect
to
an
external
speaker.
©
Copyright
1989,
1990,
Kantronics,
Inc.
All
Rights
Reserved.
Aug.
13,
1990
Duplication
of
this
manual
or
the
firmware
without
permission
of
Kantronics,
Inc.
is
prohibited.
Version 3.0
Installation Manual