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Ext. Monitor Function
Specifies whether the external monitor mirrors the LCD screen or
shows only panadapters.
Ext. Monitor Location
Specifies where the external monitor is physically located in relation to
the K4 (left, right, above, below). This allows the mouse cursor to be
moved between the LCD screen and external monitor in an intuitive
way.
Fan Speed Min
Sets the slowest speed the rear-panel fans are allowed to run.
Regardless of setting, fan speed will increase as required based on the
K4's own internal temperature measurements, including PA devices
and various modules. NOTE: The "OFF" setting is not recommended,
even if ambient room temperature is low. The resulting higher internal
temperatures may degrade performance.
FM Deviation, Voice
Sets the deviation for voice signals in FM mode.
FM Deviation, Tone
Sets the deviation for PL tones in FM mode (CTCSS).
FSK Dual-Tone RX Filter
When ON, provides separate DSP mark and space filters, which may
improve copy in some conditions. The default (OFF) is recommended
for use with external software decoders. NOTE: At present this filter is
only available when using a mark tone of 915 Hz (see FSK Mark Tone
menu entry, below).
FSK Mark Tone
Selects one of eight possible FSK mark tones (used in FSK and AFSK
modes). Space tones are 170 Hz higher in pitch. (Note that FSK and
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