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PK-88 OPERATING MANUAL
2.8
Radio Connections and Setup
DISCONNECT ALL POWER BEFORE MAKING ANY OTHER CONNECTIONS!
Use this simple step-by-step routine to verify that all cables and connectors
are properly installed, and that the PK-88 Packet Controller is operating
correctly. The procedure will also help you become familiar with the software
commands and responses.
If you cannot solve a problem after carefully reading this manual and checking
all cables and connectors, please refer to the instructions for calling the
manufacturer in the beginning of the manual.
During these initial checkout procedures, do not connect the PK-88's PTT and
AFSK lines to your radio until instructed to do so. Make all the other
connections as described below.
After all the cables between the PK-88, your radio and your computer have been
installed, apply power to your equipment in this order: radio, computer,
PK-88.
The installation procedure uses the simplest method of connecting the PK-88 to
your radio, via the radio's microphone jack. However, unless you have an
auxiliary speaker-mike jack, you may not be able to monitor the channel or
conveniently use the radio on voice.
This type of connection may also be susceptible to RFI from nearby
transmitters. After your first trials with the installation routines in an
initial test phase, you can consider alternate methods shown later in this
Operating Manual for permanent station installation.
Use only shielded wire for microphone audio circuits. If you notice
significant hum in the monitored audio during modulation adjustments, verify
ground and shield connections in the cable between the radio and the PK-88.
The cable supplied with the PK-88 is shielded for these applications.
This method requires a second receiver at the same site so that you can listen
to your own signal. Read the remainder of this chapter carefully before
connecting the PK-88 to your radio.
In this method, the PK-88 is connected directly to the radio; initial tests
are performed without making any adjustments in the radio or adding any
signal-level balancing devices in the cables.
2-7
INSTALLATION
PK88-25
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