Pactor II
Pactor II is DSP based and is as much
as 8 times faster then Pactor I. A Pactor Level II signal features 2
tones w/200Hz shift using baud rates of 100 or 200 fitting into a 500Hz
channel. Pactor II is a half-duplex synchronous ARQ system and designed
to be backward compatible with the older Pactor Level I protocol. The
system can handle raw 8 bit data and ASCII compression. Depending on
band conditions the data throughput can be increased by changing the
modulation form used. Maximum throughput is 800 bps. Pactor Level II is
operational in Europe and is in the manufacturing stage in the US.
Format Baud rate
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DBPSK Differential Binary PSK 200 bps
DQPSK Differential Quad PSK 400 bps
8-DPSK 8-phase Differential PSK 600 bps
16-DPSK 16-phase Differential PSK 800 bps
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