Kantronics KPC–3 Plus User Manual page 31

personal mailbox inside the KPC-3 Plus without using your computer. And your KPC-3
Plus can serve as a relay station for other stations without your computer being
connected. This independence from the computer is possible because the TNC
contains the intelligence necessary to carry out these functions, once it is appropriately
configured and attached to a transceiver.
The Transceiver
Your KPC-3 Plus will operate with most FM transceivers.
There are currently hundreds of models of FM transceivers. You will need to refer to
the documentation for your transceiver to determine how it must be connected to
external devices, such as the KPC-3 Plus.
Specifically, you will need to know:
what type of microphone connector to use with your transceiver, and
which pins connect to which in the cabling between the KPC-3 Plus and your
transceiver's microphone
Wiring diagrams for some common transceivers are included later in this chapter for
your assistance.
The Computer
Your KPC-3 Plus can work with any computer that can communicate with it through a
standard RS232 serial modem port.
Technical note: You need to be sure the wiring is as shown in the installation section
below. You may, of course, make your own cable; make sure it is correctly wired and
shielded.
The Serial Port on Your Computer
You will be using a standard (RS232) modem cable (or making a cable with the same
wiring) to connect your KPC-3 Plus to a serial (COM) port on your computer. The
connector needed at the computer-end of the modem cable has to fit the connector on
your computer's serial (COM) port. Therefore, you will need to know the following:
1. Is your computer's serial (COM) port DSUB-9 or DSUB-25? (most contemporary
computer serial ports are DSUB-9 Male). The computer-end of your RS232 cable
must have the same number of terminals, as does your serial (COM) port.
DSUB-9 (9 pins)
2. Note that your computer's serial (COM) port is male.
DSUB-25 (25 pins)
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