Garmin GNS 530 Manual page 22

DA 40 AFM
Once you have entered the active frequency, simply repeat steps 1 and 2, above, to
enter the standby frequency. After both communication frequencies have been
entered, you may select to keep the COM window 'hot' by leaving the cursor on the
standby frequency, or move the cursor to the VLOC window by pressing the small left
knob (1).
When selecting VLOC frequencies, the tuning cursor will
automatically return to the COM window after 30 seconds of
inactivity.
To change the standby VLOC frequency:
1. Press the small left knob (1), if needed, to activate the tuning cursor in
the VLOC window.
2. Rotate the large left knob (2) to select the MHz, and the small left
knob (1) to select the kHz of the desired frequency.
To place the standby frequency in the active field, press the VLOC flip-flop key
(4).
Doc. # 6.01.01-E
NOTE
Rev. 0 01 Dec 2001
Supplement A21
GNS 530
Page 9 - A21 - 21