Specifications

UBIT 18: OFF: In Packet operation, the FRACK (or FRICK if enabled) timer is
used to retry packets that were not acknowledged.
ON: An experimental Master/Slave relationship is established when a
Packet connection is made. This is designed for meteor scatter
operation and is described in detail under the FRICK command.
UBIT 19: ON: The "p1" and "p2" radio port designators are shown ahead of
monitored data on each radio port.
OFF: The "p1" and "p2" radio port designators are not displayed.
UBIT 20: OFF: In the Analog receive mode, each 8 bit sample is sent to the
computer as an 8 bit byte of data.
ON: In the Analog receive mode, each 8 bit sample is truncated to
the 4 Most Significant bits. Two 4 bit samples are then packed
together to form an 8 bit byte before being sent to the computer.
UBIT 21: Not used in the PK-900.
UBIT 22: ON: In the Packet mode, the PK-900 will respond to the receipt of
an UNPROTO frame addressed to QRA by sending an UNPROTO ID
packet frame within 1 to 10 seconds. This feature is compatible
with TAPR's ANSWRQRA command.
OFF: The PK-900 does not respond to UNPROTO frames addressed to QRA.
UBIT 23 ON: The TEST function halts at the end of each test measurement.
Pressing any key except "Q" starts the next test. Pressing "Q"
halts the test and returns to command mode.
OFF: The TEST function will halt for the discriminator adjustment
functions only. The rest of the test will continue until
complete or may be stopped by pressing the "Q" key.
UBIT settings 24 and above are unused at the present time but are reserved for
future expansion.
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