G1000 V8.XX S/W Load and Post Install Checkout – Columbia 350/400 Page 3-49
190-00577-04 Revision 1
3.19 COM Setup Page
The com transceivers in the GIA’s are preset at the factory. The following is only provided to allow for
further refinement of the com parameters as determined by the technician.
Figure 3-14. COM Setup Page
SELECT GIA UNIT
This window shows the currently selected GIA 63, which can be selected using the FMS knob.
CALIBRATION
FREQUENCY: Selects a VHF communication frequency. For purposes of setting squelch and sidetone
levels, only the frequencies 118.00, 127.00, 136.975 can be used.
NOTE
If a frequency other than 118.00, 127.00 or 136.975 is selected, the values cannot be stored and
the STORE softkey is grayed out, indicating that it is unavailable. If one of these three
frequencies is selected, and one of the items below is changed, the STORE softkey will no longer
be grayed out.
SPACING:
Selection Description
25.0 kHz Selects the traditional 25 kilohertz spacing (760 channel)
8.33 kHz Selects 8.33 kilohertz channel spacing, required in certain areas of the
world.
SQ 250:
Sets the squelch threshold for 25 kHz channel spacing operation. May be set to any value
between 0 (zero) and 63. The higher the number, the less signal is required to break squelch.
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