CESSNA
SECTION 7
MODEL 172S NAV III
AIRPLANE AND SYSTEM DESCRIPTION
GFC 700 AFCS
U.S.
AVIONICS SUPPORT EQUIPMENT
(Continued)
MICROPHONE AND HEADSET INSTALLATIONS
Standard equipment for the airplane includes a hand-held microphone,
an overhead speaker, two remote-keyed microphone switches on the
control wheels, and provisions for communications headsets at each
pilot and passenger station.
The hand-held microphone includes an integral push-to-talk switch.
This microphone is plugged in at the center pedestal and is accessible
to both the pilot and front passenger. Pressing the push-to-talk switch
allows voice transmission on the COM radios.
The overhead speaker is located in the center overhead console.
Volume and output for this speaker are controlled through the audio
panel.
Each control wheel contains a push-to-talk switch. This switch allows
the pilot or front passenger to transmit on the COM radios using remote
microphones.
Each seat position of the airplane has provisions for aviation-style
headsets. Microphone and headphone jacks are located on each
respective sidewall panel for communications between passengers and
pilot. The system is designed so that microphones are voice activated.
Only the pilot or front passenger can transmit through the COM radios.
NOTE
To ensure audibility and clarity when transmitting with the
hand-held microphone, always hold it as closely as possible
to the lips, then press the transmit switch and speak directly
into it. Avoid covering the opening on the back side of
microphone for optimum noise canceling.
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172SPHBUS-00
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