User`s guide

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Squelch Type Use the UP/DOWN arrow keys to select Receive, Transmit and/or
Direct (Talkaround) squelch type from among the following:
A data field for a Receive code will be displayed if PL or DPL is selected.
PL Code Enter the PL (Private-Line) code directly in Hz (192.8 for instance) or
use the alphanumeric code (7A for instance). Alternatively, the UP/
DOWN arrow keys may be used to scroll through standard frequencies
and codes. Press F1 HELP while in this field to view a list of standard
frequencies and their respective codes.
Note: A low-level hum or buzz in the received audio MAY be
experienced when TPL code OZ (254.1 Hz) is used. This PL code
is at the high end of the sub-audible frequency range and may
be heard in the audio under certain circumstances. Use of this
code should be avoided if possible.
DPL Code Enter the DPL (Digital Private-Line) code directly (023 for instance).
Leading zeros are required . Alternatively, the UP/DOWN arrow keys may
be used to scroll through the standard codes. Press F1 HELP while in
this field to view a list of standard frequencies and their respective
codes.
DPL Invert This field will be active (or can be accessed) only if the Squelch Type field is
set to DPL. Use the UP/DOWN arrow keys to invert the received DPL
code for this personality.
CSQ Carrier Squelch (Receive Only)
PL Tone Private-Line
DPL Digital Private-Line
Disabled (Transmit and Direct Only)