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To auto-tune from the nearest airport page, press
ENT.
To select a frequency from a list, highlight the
desired frequency and press ENT.
During the course of navigating with the GNC 250, there may be times when you
need to quickly select a comm frequency while you are entering data in the GPS win-
dow. Whenever data entry in the GPS window is interrupted by activating the stand-
by frequency field, the GPS field in use will become ‘splatted’, or blocked out.
Once the standby frequency has been entered, you may return to data entry by
pressing the CRSR key. The flashing cursor will return you to the active GPS field at
the point where you stopped data entry.
The GNC 250’s auto-tune feature allows you to quickly select any database fre-
quency in the GPS window as your standby frequency.
To auto-tune a single frequency displayed in the GPS window:
1. Press
E
with the cursor inactive.
2. To make the standby frequency the active frequency, press
@
.
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REFERENCE
Entering Waypoints
SECTION
2
COMM FEATURES
Overview/
Auto-Tuning
250 real 7/14/98 9:32 AM Page 30