Marker Beacon Operation; Telephone Operation (If Equipped With Approved System) - Honeywell BENDIX/KING KMA28 Installation And Operation Manual

Table 3-1 Intercom Modes
Mode Pilot Hears
Isolate A/C Radios
Pilot Sidetone
(during radio transmis-
sion)
Entertainment 1
Muted
Pilot
All
Copilot
A/C Radio
Passengers
Entertainment #1
Pilot
Crew
Copilot
A/C Radio
Entertainment #1

3.5 Marker Beacon Operation

The Marker Beacon Receiver uses visual and audio indicators to alert you when the air-
craft passes over a 75 MHz transmitter.
The audio from the Marker Beacon Receiver can be heard by selecting the "MKR" push-
button switch.
A three-position switch is used to set the receiver sensitivity and to test the indicator
lamps. Use "H
about a mile out. Then select the "L
of the Marker. When used only for approach markers, many pilots choose to leave the
switch in the low sensitivity position.
The momentary down switch position is labeled "T/M" (Test/Mute) and illuminates all
three lamps simultaneously to assure they are in working order.
The "T/M" position is also a Marker Beacon "Mute" function. Pushing this switch while
receiving a marker beacon signal will cause the audio to be temporarily silenced. No ac-
tion is required to restore the audio in time for the next beacon.

3.6 Telephone Operation (if equipped with approved system)

Each intercom position has a "hook switch." The pilot's hook switch is the "TEL" mode
on the mic selector, the others are individual switches mounted adjacent to the headset
jacks.
006-10565-0000
Audio Amplifier/Intercom/Marker Beacon Receiver
Copilot Hears
Copilot and passenger
intercom
Entertainment #1
is
Copilot
Pilot
A/C Radio
Passengers
Entertainment #1
Copilot
Pilot
A/C Radio
Entertainment #1
" sensitivity initially. This allows you to hear the outer marker beacon
IGH
Bendix/King
KMA28
Passenger Hears Telephone
Passenger and Copilot "Phone Booth" mode
intercom
Pilot has exclusive use of
Entertainment #2 the telephone.
In TEL, Pilot connected to
Com 1 for PTT TX and re-
ceive.
Passengers All have access to phone
through Hook Switch. Pilot
Pilot
access through TEL switch.
Copilot
All hear telephone audio.
A/C Radio
Entertainment #2
Passengers Pilot and copilot don't have
phone access, unless mic
Entertainment #2
sel
have phone through Hook
Switch,
phone audio.
" sensitivity to give you a more accurate location
OW
3-7
Comments
This mode allows the
pilot
without the others both-
ered by the conversa-
tions. Copilot and pas-
sengers can continue to
communicate and listen
to music
This mode allows all on
board to hear radio re-
ception as well as com-
municate on the inter-
com. Music and intercom
is muted during intercom
and radio communica-
tions
This mode allows the
pilot and copilot to con-
in TEL. Passengers centrate on flying, while
the
Passengers hear communicate
themselves.
Rev. 0, Sept. 00
to communicate
passengers can
amongst