Operating instructions
202-066-0002 5 PMA6000 –Mono Pilot Guide 
Split Mode 
Turning the rotary switch to COM 1/2 puts the PMA6000 into 
"Split Mode". This places the pilot on Com 1 and the copilot 
on Com 2. Pilot and copilot are isolated from each other and 
do not have intercom capability, but can use their respective 
radios simultaneously. An example of this useful feature is 
when the pilot may want to talk to Air Traffic Control, while 
the copilot may be speaking to Flight Watch. 
The "Split Mode" radio selection can be reversed by switching 
to COM 2/COM l. The pilot will be on Com 2 and the copilot 
will be on Com 1. 
Turning the mic selector clockwise to the C
OM 3 position 
places both pilot and copilot on Com 3, and exits the split 
mode. All selected audio inputs and intercom function return. 
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 transmission bleed-over in the Split mode, particu-
larly on adjacent frequencies. 
PS Engineering makes no warranty about the suitability of Split 
Mode in all aircraft conditions. 
Note: 
In all PMA6000-series, Split Mode turns off all other (Nav, 
ADF, etc.) selected audio to pilot and copilot. Additionally, 
there is no intercom function between pilot and copilot. Pas-
sengers still have intercom capability among themselves. 
Intercom Operation 
Volume Control 
The pilot volume control knob 
adjusts the loudness of intercom 
and music in the pilot’s head-
phones only. It has no effect on 
selected radio audio levels. The 
Figure 4 Volume Controls 










