Garmin GTX 335 Series Pilot's Manual - Page 15
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2.3 Squawk Code Keys
There are eight squawk code entry keys (0 – 7). They provide access to all ATCRBS codes.
Pressing one of the squawk code entry keys begins the code selection sequence. Digits
that are not yet entered appear as underscored blanks. When the fourth digit is entered
the new code is activated.
Press the CLR key to move the cursor back to the previous digit.
Press and hold the CLR key to move the cursor back to the first digit.
Pressing the CLR key when the cursor is on the first digit removes the cursor and cancels
the code entry, retaining the last code entered.
Pressing the CRSR key when entering the code removes the cursor and cancels the code
entry. The last code entered is retained.
190-01499-00 Rev. C
Table 2-2 Squawk Code Key Functions
Figure 2-1 Squawk Code Entry Field
GTX 335/345 Pilot's Guide
GTX 3X5 XPDR
1 – GTX 3X5 SERIES XPDR
2-3