202-890-0202
Page 3
Feb. 2009 PMA8000B Pilot Guide
The PMA8000B-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 C
OM
2 trans-
mitter selector pushbutton. Note that the associated Com 2 receive
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 “remembers” the receiver selection, so that when
switching transmitters from C
OM
1 to C
OM
2, if C
OM
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 C
OM
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 gives priority to the pi-
lot’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
C
OM
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 C
OM
1 is not
possible.
NOT E : 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.