Rx Nac Operation: Normal; Table 5: Digital Access Code Table - Futurecom PDR8000 Manual

Within each digital Access Code Table, exists a Multi-NAC table defining the particular NAC
values used to govern squelch operation on the configured channel. The table consists of 8
rows, having an Rx NAC and corresponding Tx NAC value (each value 0-$FFF). In most
cases, only one row of values is used. If the configured operation is for Multi-NAC (see Table
4) then all 8 rows are available for use (each row can be enabled/disabled for use during
configuration.)
Rx NAC Operation
Tx Last Rcvd NAC
Tx Last Rcvd NAC Duration
Within each digital Access Code Table is a setting for the Rx NAC Operation mode to be
utilized by channels pointing to this table. The four modes of Rx NAC Operation are:
•
Normal
•
Receiver Monitor
•
Community Repeater
•
Multi NAC
6.6.2.1.1 R NAC O
X
If the active PDR8000 channel is programmed for Rx NAC Operation of Normal then the
PDR8000 only processes messages received over the air with Rx NAC that is equal to the
PDR8000's configured Rx NAC found in the first enabled row of the Multi-NAC table. (Packets
received with other NAC values are ignored.) When the PDR8000 sends a transmission, it
typically uses Tx NAC found in the first enabled row of the Multi-NAC table. Console-originated
transmissions initiated via DFSI may either provide the specific Tx NAC to be used as part of
the transmission information, or the console may defer to the PDR8000's configured Tx NAC by
specifying a Tx NAC of $F7E.
Note that in many radio systems, no degree of filtering based on NAC is desired. In these
systems, the Tx NAC and Rx NAC codes are set to use the Default NAC ($293). In systems
where there may be adjacent radio agencies on the same RF Frequency, it is suggested that
each agency utilize a different NAC code, to keep radios in the adjoining systems from
unsquelching on unintended traffic.
2021-11-15
Rx NAC
Rx NAC 1
Rx NAC 2
Rx NAC 3
Rx NAC 4
Rx NAC 5
Rx NAC 6
Rx NAC 7
Rx NAC 8

Table 5: Digital Access Code Table

: N
PERATION ORMAL
PDR8000® Portable Digital Repeater Product Planner
Normal / Rcvr Monitor /
Community Rptr / Multi-NAC
Enabled / Disabled
Time (minutes)
Tx NAC
Tx NAC 1
Tx NAC 2
Tx NAC 3
Tx NAC 4
Tx NAC 5
Tx NAC 6
Tx NAC 7
Tx NAC 8
Document 8K088X02 R5.0
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