Analog Code Table
Multi-Coded Squelch (PL/DPL)
Multi-Coded Squelch is a feature commonly used in analog radio operation. Operation is driven by the
addition of a sub-audible tone on the RF carrier in addition to the voice payload. When an RF signal is
received, the receiver checks for presence of PL/DPL, and modifies its behavior based upon detection of
the decoded PL/DPL tones. In most cases, the receiving radio will choose to either unsquelch, or mute
the incoming signal based on the presence of the detected PL/DPL.
PDR8000 allows each of its analog-enabled channels to be configured with a desired behavior for
utilizing PLs/DPLs. These behaviors are captured in Analog Code Tables. Each configured channel in the
PDR8000 can point to one of the configured Analog Code tables. Each table can be used to define
PL/DPL operation for a specific channel or may capture behavior shared by multiple channels.
Within each Analog Code Table, exists a Multi-PL/DPL table defining the particular PL/DPL values used to
govern squelch code on the configured channel. The table consists of 14 rows, having an Rx Squelch
Code, a corresponding Tx Squelch Code, as well as parameters to control Squelch Tail Elimination. In
most cases, the table is configured for Normal operation, allowing only the first row of the table to be
used (see Table 1). If, however, the table is configured for Multi-PL/DPL operation (see 0) then all 14
rows are available for use (each row can then be individually enabled/disabled as desired.)
Row
Rx Squelch Tail
Enabled
Elimination (STE)
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
Y/N
Off / DPL / -135 / +135 / 180
2021-11-0
PDR8000® Portable Digital Repeater Programming Guide
Rx PL Operation
Rx Squelch
Code
Rx Code 1
Rx Code 2
Rx Code 3
Rx Code 4
Rx Code 5
Rx Code 6
Rx Code 7
Rx Code 8
Rx Code 9
Rx Code 10
Rx Code 11
Rx Code 12
Rx Code 13
Rx Code 14
Table 1: Analog Code Table
Normal / Multi-PL/DPL
Tx Squelch
Code
Tx Code 1
Tx Code 2
Tx Code 3
Tx Code 4
Tx Code 5
Tx Code 6
Tx Code 7
Tx Code 8
Tx Code 9
Tx Code 10
Tx Code 11
Tx Code 12
Tx Code 13
Tx Code 14
8K088X04 R5.00
Tx Squelch Tail
Elimination (STE)
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Off / DPL / -135 / +135 / 180
Page 62 of 98
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