Cessna 152 - Supplement: Cessna 400 Transponder and Optional Encoding Altimeter (Type EA-401 A)

PIWT'S
OPERATING HANDBOOK
SUPPLEMENT
CESSNA 800 TRANSPONDER
AND ENCODING ALTIMETER
SUPPLEMENT
CESSNA
300
TRANSPONDER
(Type
RT-359A)
AND
OPTIONAL
ENCODING
ALTIMETER
(Type
EA-401A)
SECTION
1
GENERAL
The
Cessna
300
Transponder
(Type
RT-359A), shown
in
Figure
1,
is
the
airborne
component of
an
Air
Traffic
Control
Radar
Beacon
System
{ATCRBS).
The
transponder
enables
the
ATC
ground
controller
to
"see"
and identify the
aircraft,
while in flight, on
the
control
center's
radar-
scope
more
readily.
The
Cessna
300
Transponder
consists
of a
panel-mounted
unit
and
an
externally-mounted
antenna.
The
transponder
receives
interrogating
pulse
signals
on 1030
MHz
and
transmits
coded
pulse-train
reply
signals
on 1090
MHz.
It
is
capable
of
replying
to
Mode
A
(aircraft
identification) and
Mode C (altitude
reporting)
interrogations
on a
selective
reply
basis
on any
of 4,096
information
code
selections.
When
an
optional
panel-mounted
EA-401A Encoding
Altimeter
(not
part
of
a
standard
300
Transponder
sys-
tem)
is
included
in
the
avionic configuration,
the
transponder
can
provide
altitude
reporting
in
100-foot
increments
between
-1000
and
~5.
000
feet.
All
Cessna
300
Transponder
operating
controls,
with
the
1.
xcention
of
the
optional
altitude
encoder's
altimeter
setting
knob,
are
locateu
on
the
front
panel
of
the
unit.
The
altimeter
setting
knob
is
located
on
the
encoding
altimeter.
Functions
of
the
operating
controls
are
described
in
Figure
1.
1
July
1978
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