Garmin gns 500w Manuale Utente

2

190-00356-00 Rev E

f

 

The small left knob (COM/VLOC)
(420W/430W only) is used to tune the kilo-
hertz (kHz) value (to the right of the decimal 
point) of the standby frequency for the com-
munications transceiver (COM) or the VLOC
receiver, whichever is currently selected by the 
tuning cursor. Press this knob momentarily 
to toggle the tuning cursor between the COM 
and VLOC frequency fields.

W

 

The COM flip-flop key (420W/430W only) 
is used to swap the active and standby COM 
frequencies. Press and hold to select emer-
gency channel (121.500 MHz). 

V

  The VLOC flip-flop key (430W only) is 

used to swap the active and standby VLOC
frequencies (i.e., make the selected standby 
frequency active). 

Key and Knob Functions

The 400W-series unit is designed to make operation 

as simple as possible. The key and knob descriptions on 
the next three pages provide a general overview of the 
primary function(s) for each key and knob. This Takeoff 
Tour section is intended to provide a brief overview of 
the primary functions of your 400W-series unit. Experi-
ment with the unit and refer to the Reference sections 
for more information. 

k

  The COM power/volume knob (420W/430W 

only) controls unit power and communications 
radio volume. Press momentarily to disable 
automatic squelch control. In the GPS 400W, 
this control is used only for power. 

j

 

The VLOC volume knob (430W only) 
controls audio volume for the selected VOR/
Localizer frequency. Press momentarily to 
enable/disable the ident tone. 

h

  The large left knob (COM/VLOC)

(420W/430W only) is used to tune the mega-
hertz (MHz) value (to the left of the decimal 
point) of the standby frequency for the com-
munications transceiver (COM) or the VLOC
receiver, whichever is currently selected by 
the tuning cursor.