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Page 5-16
400W Series Installation Manual
Rev. G
190-00356-02
5.3.12 COM SETUP Page (GNC 420W and GNS 430W Only)
Select the COM SETUP Page (see Figure 5-15). These
values are set at the factory and seldom require
calibration.
FREQ
Selects a VHF communication frequency. For purposes
of setting the squelch and sidetone levels, only the
frequencies 118.000, 127.000, and 136.975 MHz can be
used.
SPACING
Selection Description
25.0 kHz
Selects traditional 25 kilohertz spacing (760 channel).
8.33 kHz
Selects 8.33 kilohertz channel spacing, which is required in some
areas of the world.
CAUTION
8.33 kHz channels are not authorized for use in the United States.
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.
NOTE
For GNC 420W or GNS 430W units with COM software 2.00 or earlier, the operation of
the SQ 250 setting is reversed. The higher the SQ 250 number, the more signal is
required to break squelch.
SQ 833
Sets the squelch threshold for 8.33 kHz channel spacing operation. May be set to any value between 0
(zero) and 63. The higher the number, the more signal is required to break squelch.
SIDE
Sets the sidetone audio output level. May be set to any value between 0 (zero) and 63.
NOTE
The sidetone audio output level is independent of the COM volume knob on the 400W
Series unit.
Store Calibration?
Select this field and press the ENT key to accept the squelch threshold and sidetone audio settings on this
page. If you wish for the squelch and sidetone settings to return to their previous values,
do not
select this
field. Simply change to the next configuration page, or turn off the unit if you are done with
configuration.
Selection Verify
That:
PTT
The box is filled in while the COM push-to-talk switch is pressed.
XFR
The box is filled in while a remote COM transfer switch is pressed.
RX
The box is filled in while the COM is receiving a signal.
TX
The box is filled in while the COM push-to-talk switch is pressed.
Figure 5-15. COM SETUP Page
Содержание GNC 420AW
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