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Garmin G1000 Cockpit Reference Guide for the Mooney M20M & M20R
5-3
SECTION 5 – AUDIO PANEL
Figure 5-5  Navigation Radios
5.4  INTERCOM SYSTEM (ICS) ISOLATION
Press the PILOT and/or COPLT key to select who is 
isolated from hearing the Nav/Com radios and music.  Se-
lection scenarios are addressed in Table 5-1.
Figure 5-6  ICS Isolation
Mode
PILOT KEY
ANNUNCIATOR
COPLT KEY
ANNUNCIATOR
Pilot Hears
Copilot Hears
Passenger 
Hears
ALL
OFF
OFF
Selected radios;  
pilot; copilot;  
passengers; 
MUSIC 1
Selected radios;  
pilot; copilot;  
passengers; 
MUSIC 1
Selected radios;  
pilot; copilot;  
passengers; 
MUSIC 2
PILOT
ON
OFF
Selected radios;  
pilot
Copilot;  
passengers; 
MUSIC 1
Copilot;  
passengers;  
MUSIC 2
COPILOT
OFF
ON
Selected radios;  
pilot; passengers; 
MUSIC 1
Copilot
Selected radios;  
pilot; passengers; 
MUSIC 2
CREW
ON
ON
Selected radios;  
pilot; copilot
Selected radios;  
pilot; copilot
Passengers;  
MUSIC 2
Table 5-1  ICS Isolation Modes
5.5  INTERCOM SQUELCH CONTROL
Select manual squelch for intercom audio by pressing 
the MAN SQ key to light the annunciator.
Pressing  the  small  VOL/SQ  knob  now  toggles  be-
tween volume and squelch adjustment by lighting VOL 
or SQ respectively. 
Figure 5-7  Volume/Squelch Control