Operating instructions

Page 3
October 2010
202-890-0403
ceiver audio. Push the lower button to select the desired COM trans-
mitter.
The PMA8000B MP3-Series has an automatic selector system. Audio
from the selected transceiver is automatically heard in the headsets
and speaker (if selected). You can check this function by switching
from C
OM 1 transmitter to Com 2 transmitter by pressing the COM 2
transmitter selector pushbutton. Note that the associated Com 2 re-
ceive pushbutton indicator light that is located immediately above the
Com 2 transmitter pushbutton turns green. This guarantees that the
pilot will always hear the audio from the transceiver selected for
transmit.
The PMA8000B MP3 “remembers” the receiver selection, so that
when switching transmitters from C
OM 1 to COM 2, if COM 2 audio
was previously selected, C
OM 1 audio will continue to be heard. This
eliminates the pilot having to switch Com 1 audio back on, after
changing transmitters.
When switching from C
OM 1 to COM 2 while Com 2 was not previ-
ously selected, C
OM 1 audio will be switched off. In essence, switch-
ing the mic selector will not override prior selection of COM receiver
audio.
In normal (not split) modes, the PMA8000B MP3 gives priority to the
pilot’s radio Push-To-Talk (PTT). If the copilot is transmitting, and
the pilot presses his PTT, the pilot’s microphone will be heard over
the selected com transmitter.
In TEL mode, the pilot microphone and headphones are connected to
the cell phone. The pilot PTT will switch the pilot mic to the selected
com transceiver, and allow continued aircraft communications to con-
tinue. (See Page 4—TEL—for more details)
The copilot will also be able to transmit on the other selected radio
with his PTT as well.
Split Mode (Pilot and copilot on different radios)
The split mode is activated by pressing
the C
OM 1 and COM 2 XMT buttons at
the same time. This places the pilot on
C
OM 1 and the copilot on COM 2.
Pilot on C
OM 2 and Copilot on COM 1 is
not possible.
When the split mode is activated, the