SECTION 1 - OPERATION INFORMATION
5
All adjustments are to be done once, and corrected slightly if
necessary. There is no need for often corrections e.g. before each
flight.
Pilot Isolate Switch ALL/ISOL:
Function ISOL is for isolation of pilot from co-pilot (passenger) e.g.
for radio transmission. With switch in ISOL position, the internal
communication is blocked, pilot does not hear neither himself nor co-
pilot (passenger) –he can conduct the external conversation instead..
Co-pilot does not hear neither pilot, nor external conversation but he
can hear himself.
With switch set to ALL, both internal an external conversation is
possible. Pilot and co-pilot (passenger) hear the external transmission
incoming, as well as this coming out, provided the transceiver has the
SIDE-TONE listening in function active.
In aircraft transmitters the SIDE-TONE function is set to activated as
a standard.
PTT Transmission System:
Intercom is equipped with dual transmission system, separable and
with higher priority for pilot communication.
When the pilot in command is depressing his PTT switch, he is
blocking the internal communication, suppressing the incoming
external transmission and blocking the transmission of co-pilot. Co-
pilot can conduct communication only when pilot is not doing so.
Depressing the co-pilot PTT switch is blocking the internal