To Select Comm Frequencies; To Exchange Active And Standby Frequencies; To Adjust The Audio Volume; To Override The Automatic Squelch - Garmin GNC 250 Pilot’s Quick Reference Manual

TO SELECT COMM FREQUENCIES

C repeatedly to highlight the standby field (e.g., "<121.75>").
Press
O to select the desired megahertz (to the left of the decimal).
Rotate
K to select the desired kilohertz (to the right of the decimal).
Rotate
C twice to remove the cursor from the comm and GPS windows.
Press

TO EXCHANGE ACTIVE AND STANDBY FREQUENCIES

@ button.
Press the

TO ADJUST THE AUDIO VOLUME

B power/volume knob.
Rotate the

TO OVERRIDE THE AUTOMATIC SQUELCH

Q squelch key. Press Q again to return to automatic squelch.
Press the
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