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Audio Panel Controls
The COM 1 through COM 5 MIC buttons are used to select the associ-
ated radio transmitter. The receiver audio for the selected transmitter is
A lighted arrow located above each button indicates that the button has
been pressed and that the mode is active for the left (pilot) side, right
(copilot) side, or both sides. This depends upon the mode of the audio
panel operation split or duplex mode. Refer to the Split Mode Operation
in this Pilot’s Guide for additional information on the Split Mode.
COM 5 can be configured for duplex, which simulates the operation of a
telephone. Refer to the Telephone Mode Operation in this Pilot’s Guide
for additional information on the Telephone Mode.
SPLIT MODE BUTTON
NOTE: The Split Mode is used only in a single audio panel environ-
ment. It allows the pilot and copilot to transmit and receive on
different COM radios.
The audio panel has two modes of operation, Normal and
Split. In the Normal Mode the pilot and copilot transmit on
the same selected COM radio. The Split Mode operation
allows the pilot and copilot to transmit and receive on sep-
arate COM radios.
The SPLIT Mode button is a rocker switch used to select which crew
member is on a given radio. The selection is initiated by pressing the
left (pilot) side or right (copilot) side of the SPLIT button. The LED above
the SPLIT button indicates who can select the COM radio for transmis-
sion. For example, the SPLIT Mode button that is shown above illus-
trates that the copilot is making the COM selection. The person in con-
trol can then select the specific COM radio to be connected to that per-
son’s PTT switch. The LED located above each COM button indicates
which PTT switch is connected to that radio. When the Split Mode is
active, the split operation can be toggled between the pilot and copilot
by pushing the desired side of the SPLIT button. The audio panel
remains in the Split Mode until it is cancelled by the pilot and copilot
selection of the same COM MIC radio.
KMA 29 Audio Panel Pilot’s Guide