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PK-88 OPERATING MANUAL
2.1
Preliminary Information
This section contains instructions for a 'generic' installation and system
checkout to install and verify the PK-88's operation with both VHF-FM and HF
SSB radios.
2.1.1
Equipment Required
A complete PK-88 Packet Controller system consists of the PK-88 and a 12 to
16-volt DC power supply, a computer, a terminal emulator or communication
program for the computer, a radio transceiver or receiver-transmitter
combination and its power supply.
Your PK-88 Packet Controller is furnished with the cables required for
connection to your radio and to an external power supply. You must add the
microphone connector required by your radio, the power supply and the RS-232
cable that connects the PK-88 to your computer.
RAM battery backup is provided by two internal AA batteries. (user supplied
and installed)
2.1.2
Precautions
We strongly recommend that all RS-232 cables and connectors be made with the
best commercial quality shielded materials, and that careful and correct
grounding and bonding procedures be observed in the installation of the radio
equipment being used with the PK-88.
2.2
Installation
The following sections describe the connectors and their connections to your
computer and your radio.
2.2.1
Power Connections
Power is connected to the PK-88's rear-panel coaxial power receptacle from any
well regulated 12-volt DC power supply (12 to 16 VDC) capable of supplying at
least 600 milliamperes. An optional wall adapter power supply can be used.
Be sure your power supply can furnish the required current with
0
a ripple voltage of less than one volt peak to peak.
Be sure you connect the positive voltage to the center pin of the
0
coaxial power plug.
Check the supplied cord to determine which lead is positive.
0
If you accidentally invert the power cable, an internal fuse will open to
protect the PK-88 from reverse-voltage damage. Note that the 0.1 mfd bypass
capacitor Cl may be damaged. If polarity reversal does occur, open the PK-88,
replace the internal fuse and capacitor Cl with identical components,
CHAPTER 2
INSTALLATION
2-1
INSTALLATION
PK88-19
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