2-22 Pilot’s Guide 190-02488-01 Rev. B
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Channel Spacing Option
The GNC 355A supports channel tuning for both 8.33 kHz and 25 kHz channels
within radio-frequency range. The GNC 355 supports frequency-channel pairings
for 25 kHz channels only.
AVAILABLE WITH: GNC 355A
If flying in a region where 8.33 kHz channel spacing is available, set the COM
radio to 8.33 kHz to prevent the loss of any stored or recently used frequencies.
Tapping this key toggles the transceiver channel spacing
between 8.33 kHz and 25.0 kHz.
8.33 kHz 25.0 kHz
8.33 kHz step configuration is
available for European
operations.
On GNC 355A, channel
spacing is set to 8.33 kHz
by default.
COM radio operates in the
aviation voice band, between
118.000 and 136.975 MHz,
in 25.0 kHz steps.
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