Honeywell Bendix/King Silver Crown Plus Pilot's Manual page 76

There are three special functions. "INTERCOM" function is related to the
intercom audio distribution, and allows the crew to mute passengers' inter-
com feed when radios are active.
The "MONITOR" function mutes the secondary communication radio audio
when the primary radio (the one selected to transmission) is active.
"MUSIC" function controls how music is distributed in your airplane.
There are two music sources available to the KMA 30, in addition to the
Bluetooth stream. Music 1 input at the rear connector) and Music 2 is wired
into the rear connector).
The volume of the function selection annunciations and recorder playback
can be adjusted through a hole on the top of the unit marked "ANN VOL."
"INTERCOM" Function
Function controls the distribution of aircraft radio
INTERCOM
and passenger intercom. In the "Standard Intercom Function"
mode, aircraft radios are distributed to all, when the intercom is
in the ALL mode. In CREW mode, only the pilot and copilot
positions will hear aircraft radios.
When in "Alternate Intercom Function," the passengers will NEVER hear
aircraft radios, even in the ALL mode. In addition, when in the ALL inter-
com mode, passengers will be able to converse with the crew, unless the
aircraft radio becomes active, when the intercom audio from the passengers
to the pilot and copilot is stopped, so the crew can focus on the radio. Pas-
sengers will always be able to talk to each other.
To activate this function, hold the TEL button until the audio announces
"Alternate Intercom Function," when activated, or "Standard Intercom
Function" when deactivated." The alternate mode is announced at power up,
unless the power on announcement has been defeated. (See pg 17.)
"MONITOR" Function
This function turns the MONITOR Function on and off.
When the Monitor is on, the audio from the COM that is selected for
reception only (only top LED illuminated) will be muted when the
radio that is selected to transmit becomes active.
This function is useful if you are copying weather from AWOS on
COM 2, but have clearance delivery tuned in on COM 1. With the
monitor active, the AWOS audio will be silenced when clearance de-
livery starts to speak.
To activate the Monitor Function
press and hold AUX. The audio will announce
Page 16 KMA 30 Pilot Guide 202-890-5464