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from this crew station (only one can be selected at a time for each crew
station)
• selects receiver audio on, if not previously selected on manually
• pushing CAB transmitter select switch twice within one second places a
priority call to a selected cabin station.
Note: Do not select VHF C for ATC voice communication withACARS
operational.
2 Push-to-Talk Switch
R/T – keys boom microphone or oxygen mask microphone on the selected radio
transmitter or interphone system.
Center - off.
ADF
VHF
CALL
L C R FLT CAB PA
VOR
MKR
SPKR
CALL CALL
MIC
CALL CALL
CALL CALL CALL CALL
HF
L R L R
SAT
L
L
R
R
V B R
VHF VHF
L
C R
INT
APP
R/T
MIC MIC MIC MIC
MIC MIC MIC MIC
1 MIC
2
5
8
9
3 10
7
4
6
AFT AISLE STAND AND
OBSERVER’S PANEL
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
5.10.2 D6-30151-425
Communications -
Controls and Indicators
INT - keys boom microphone or oxygen mask microphone on flight interphone.
Note: Oxygen mask microphone active when oxygen mask stowage box
left-hand door open. Boom microphone active when oxygenmask stowage
box left-hand door closed and Reset/Test slide lever pushed and released.
3 VOR/ADF Receiver Selector
Selects VOR or ADF receiver to be monitored:
• VORL-leftVOR
• VOR R - rightVOR
• ADF L - left ADF
• ADF R - right ADF.
4 Navigation Filter Selector
Filters VOR, ADF, or ILS audio:
• V (voice) – voice audio is heard
• B (both) – voice and range audio are heard
• R (range) – range audio (navigation aid Morse code identifier) is heard.
5 MIC Lights
Illuminated (white) – indicates related transmitter is selected.
6 CALL Lights
Illuminated (white) - indicates a call on:
• cabin interphone (CAB)
• flight interphone (FLT)
• ACARS (VHF C)
• SATCOM(SAT)
• SELCAL (VHF or HF).
Resets when related transmitter select switch pushed or; when already pushed, by
pressing a MIC/INTERPHONE switch.
SATCOM CALL light remains illuminated until call ends.
PA does not have a call indication.
7 Receiver Lights
Illuminated (green) - indicates related receiver audio manually selected on.
8 Receiver Volume Controls
Push - selects related receiver audio on.
April 01, 2001
747 Operations Manual
Communications -
Controls and Indicators
Copyright © The Boeing Company. See title page for details.
D6-30151-425 5.10.3
Rotate - controls receiver volume.
Second push - deselects related receiver audio.
Note: Will not select off when related transmitter selected ON, or 121.500 tuned
in radio tuning panel Active Frequency indicator.
9 Speaker (SPKR) Volume Control
Push - turns related flight deck speaker on.
Rotate - controls flight deck speaker volume.
Second push - deselects related receiver audio.
10 Approach (APP) Receiver Selector
Selects approach receiver to be monitored:
• APP L - left ILS
• APP C - center ILS
• APPR-rightILS
• MKR - marker beacon.
Radio System
Radio Tuning Panel
AFT AISLE STAND
4
5
9
11
10
2
1 7
8
3
6 12
VHF L VHF C VHF R
ACTIVE STANDBY
HF L AM HF R
HF SENS
OFF
OFF
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
5.10.4 D6-30151-425
Communications -
Controls and Indicators
1 Offside Tuning Light
Illuminated – indicates one of the following conditions:
• the radio tuning panel is being used to tune a radio not normally
associated with this radio tuning panel
• the radio normally associated with this panel is being tuned by another
radio tuning panel
• another radio tuning panel is off
Note: The left radio tuning panel is normally associated with VHF L and HF L.
The right radio tuning panel is normally associated with VHF R and HF R.
The center radio tuning panel is normally associated with VHF C.
2 ACTIVE Frequency Window
Displays tuned frequency of selected radio.
Displays ACARS on VHF C when ACARS selected.
3 HF Sensitivity Control
Rotate – adjusts sensitivity of related HF receiver.
Control not affected by radio tuning panel failure or by OFF switch.
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波音747-441操作手册1(105)
