Cessna 1980 182Q - Audio Control Panel for Use with One or Two Transmitters

PILOT'S OPERATING HANDBOOK
SUPPLEMENT
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CESSNA 400 MARKER BEACON
(TYPE R-402A)
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AUDIO CONTROL PANEL FOR USE WITH ONE OR TWO TRANSMITTERS
1. MARKER BEACON ANNUNCIATOR LIGHTS:
OUTER - Light illuminates blue to indicate passage of outer marker beacon.
MIDDLE - Light illuminates amber to indicate passage of middle marker beacon.
INNER and FAN - Light illuminates white to indicate passage of inner and fan
marker beacon.
2. SPEAKER/OFF/PHONE SELECTOR SWITCH:
SPEAKER POSITION - Turns set on and selects speaker for aural reception.
OFF POSITION - Turns set off.
PHONE POSITION - Turns set on and selects phone for aural reception.
3. ANNUNCIATOR LIGHTS SWITCH:
NITE POSITION - Places the annunciator lights in a dim lighting mode for night
flying operations. Light intenSity of the NITE position is controlled by the
RADIO LT dimming rheostat.
DAY POSITION - Places the annunciator lights in the full bright position for
daylight flying operations.
TEST POSITION - Illuminates all marker beacon annunciator lights (and other
annunciators) in the full bright position to verify operation of annuncia-
tor lights.
4. HIGH/LO/MUTE SELECTOR SWITCH:
HIGH POSITION - Receiver sensitivity is positioned for airway flying.
LO POSITION - Receiver sensitivity is positioned for ILS approaches.
~rLTE POSITION - The marker beacon audio signals are temporarily blanked out
(for approximately 30 seconds) and then automatically restored. over the
speaker or headset in order to provide voice communications without
interference of marker beacon signals.
Figure 1. Cessna 400 Marker Beacon Operating Controls and
Indicator Lights Supplied with Two or Less Transmitters
1 October 1979
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