Differences from the KAM Plus
KAM Plus users will be especially interested in this section, which summa
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rizes differences between the KAM’98 and the KAM Plus.
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Kantronics now produces the KAM’98 in addition to the KAM Plus. Since the
KAM’98 uses a totally redesigned multi-layer printed circuit board and a new
microprocessor (the Motorola HC11), the KAM Plus may not be upgraded to a
KAM’98.
The KAM’98 is a single-port multi-mode controller that advances the state of
the art beyond the pioneering Kantronics KAM and KAM Plus in a number of
ways:
• The radio port AFSK modem supports baud rates from 50 to 1200 baud.
The KAM Plus HF modem supported a maximum rate of 300 baud. The
modem’s increased rate allows the KAM’98’s single radio port to be
cabled to transceivers that may be used for 1200 baud packet (on VHF
FM), not just 300 baud for HF packet operation. The Icom 706, which
covers HF and 2-meters with the flip of a switch, is one such radio.
• The AFSK modem is also enhanced compared to the KAM Plus.
All 4 and 6-pole filters have been replaced with sharper, 8-pole filters.
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The KAM’98 radio port uses a DB-9 connector (retaining the pin
assignments used in Kantronics’packet units), whereas the KAM Plus HF
port used a 8-pin DIN. Hence, with the radio port capable of 1200 baud,
users may use existing radio-cable combinations used before for
VHF/UHF 1200 baud packet operations with the KAM’98 .
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With the HC11 processor aboard, the serial port expects to see 8,N, 1
serial communication. Also, with this added processing power available,
compared to the 6303 used in the KAM Plus, future upgrades/modes are
possible.
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The KAM’98 adds an auxiliary (AUX) port, also a DB-9 connector, that
supports two FET output control lines and four A/D input lines, for
remote control and data acquisition. The AUX port also supports the
attachment of a GPS device (using a firmware-based serial port), thereby
Introduction Differences from the KAM Plus
User’s Guide 16 KAM’98 v 8.3
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