CESSNA SECTION 7
MODEL
208B
(675 SHP) AIRPLANE AND SYSTEMS DESCRIPTION
VACUUM SYSTEM AND INSTRUMENTS
(Continued)
MICROPHONEISPEAKER AND MlClPHONE JACKS
Radio communications are accomplished by the use of a hand-held
microphone and the airplane speaker. The microphone stows in a
hanger on the front of the pedestal and plugs into a mic jack located on
the right side of the pedestal. The airplane speakers are located above
the pilot's and front passenger's positions in the cabin headliner.
Microphone and headset jacks are located on the left side of the
instrument
oanel for the oilot and the riaht side of the instrument Dane1
for the froni passenger. ~hese jacks are used when oxygen masks are
In use. Audio is controlled bv the indiv~dual audio selector switches and
~~--
~~~~
~~~
~
~~
adjusted for volume level' by using the selected receiver volume
controls.
NOTE
To ensure audibility and clarity when transmitting with the
hand-held
micro~hone, always hold it as closelv as ~ossible
to the lips, then key the microphone and speak directly into
it. Avoid covering the opening on the back side of
I
microphone for optimum noise cancelling.
STATIC DISCHARGERS
As an aid in IFR flights, wick-type static dischargers are installed to
improve radio communications during flight through dust or various
forms of precipitation (rain, snow or ice crystals). Under these
conditions, the build-up and discharge of static electricity from the
trailing edges of the wings, rudder, elevator, propeller tips, and radio
antennas can result in loss of usable radio signals on all
communications and navigation radio equipment. Usually the ADF is
first to be affected and VHF communication equipment is the last to be
affected.
Installation of static dischargers reduces interference from precipitation
static, but it is possible to encounter severe precipitation static
conditions which might cause the loss of radio signals, even with static
dischargers installed. Whenever possible, avoid known severe
precipitation areas to prevent loss of dependable radio signals. If
avoidance is impractical, minimize airspeed and anticipate temporary
loss of radio signals while in these areas.
(Continued Next Page)
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