Operating instructions

202-890-0602 Page 3
July 2008 PMA8000MP3 Pilot Guide
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 it 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
The split mode can be activated at any time 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 C
OM 2.
Pilot on C
OM 2 and Copilot on COM 1 is not possible.
NOTE: Due to the nature of VHF communications signals, and the size
constraints in general aviation aircraft, it is probable that there will be some bleed-
over in the Split mode, particularly on adjacent frequencies. PS Engineering
makes no warranty about the suitability of Split Mode in all aircraft conditions.