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tone lasting longer than 7 seconds indicates failure of the system to tune. Data is
stored in memory for the last 100 tuned frequencies. Stored frequencies may tune
quickly and a tone may not be noticeable.
Both HF radios use a common antenna. When either HF radio is transmitting, the
antenna is disconnected from the other HF radio, and it cannot be used to transmit
or receive. However, both HF radios can receive simultaneously if neither is being
used for transmitting.
HF Main Menu
Push – Up
• increases HF sensitivity in increments up to 100 or full volume
• holding key down slews sensitivity up to desired volume.
Push – Down
• decreases HF sensitivity in increments down to 0 or minimum volume
• holding key down slews sensitivity down to desired volume.
Push - Toggles between upper side band (USB) and amplitude modulation (AM)
modes.
1 HF Sensitivity Keys
2 HF USB/AM Key
X XXXXXXXXX HFXXXXXXXX 1 / 4
<11.167 X L XX 10.048>
X A C T I V E X X X X X X X X X X X X S T B Y X
X X X X X X X X X X X X X X X X X X X X X X X X
< DATAXXXX--R--XX 5.667>
X X X X X X X X X X X X X X X X H F X S E N S X
< 118.525X--R--XX UP>
X HF MODEX X X X X X X X X X X X X X X X
< USB AMXXXXXXXXXXXDOWN>
1 28.500XXXXXXXXXXXXXXXXX
1 0 0
TUNING AND CONTROL PANEL
2
1
787 Flight Crew Operations Manual
Communications -
System Description
Boeing Proprietary 5.20.5
Stuck Mic Protection
In the event a VHF or HF radio transmits for more than 30 seconds, the EICAS
advisory message RADIO TRANSMIT CAPT, F/O or OBS is displayed. The
message is removed when the transmission stops.
On the ground with both engines shut down, any radio that transmits for more than
35 seconds is automatically disabled and dashes (-------) appears in the TCP
frequency line for that radio. That radio is enabled when the microphone switch
for that radio is released.
Selective Calling (SELCAL) System
The SELCAL system monitors the three VHF radios. When the system receives a
call from a ground station, the crew is alerted through the communication crew
alerting system.
The SELCAL system monitors the three VHF radios and the two HF radios. When
the system receives a call from a ground station, the crew is alerted through the
communication crew alerting system.
Satellite Communication (SATCOM) System
The SATCOM system provides both data and voice communications. The system
is managed by the satellite data unit. Flight deck voice calls are controlled using
the TCPs and audio control panels.
The SATCOM control pages are displayed by selecting SAT on the TCP.
Directories of airline-defined numbers are line-selectable or numbers may be
manually entered if function is enabled by the operator.
Incoming SATCOM calls are annunciated by a SELCAL chime and illumination
of a CALL light on the audio control panel. Pressing the respective transmitter
select switch connects the call to the pilot headset/hand mic.
SATCOM calls are terminated when the CALL light extinguishes (ground party
hang-up or pilot ends call).
The EICAS communication message SATCOM CALL displays when a SATCOM
message requires flight crew attention. Servicing the message clears the EICAS
message.
The Rockwell SATCOM system (as installed) provides three priority levels:
• Emergency (EMG) - emergency and distress calls (activates ground
station alarm)
• Operational high (HGH) - regulatory and flight safety calls
• Operational low (LOW) - non-safety related service calls.
787 Flight Crew Operations Manual
Communications -
System Description
5.20.6 Boeing Proprietary
SATCOM Main Menu Pages [Rockwell, Typical]
The SATCOM main menu pages allow the flight crew to initiate, answer and
terminate calls, monitor call status, and access lower-level pages. Control
functions are active when displayed with a caret (< or >).
SATCOM Main Menu
Displays associated SATCOM channel (-1 or -2) status
• READY - system ready to make call
• CABIN USE - system in use by cabin attendants
• DIALING - system is dialing or placing the call
• RINGING - call is ringing and waiting for ground station to answer
• ANSWERED - call has been picked up by ground station
• CALL FAIL - call failed to be received
• NOT READY - system is not ready to make a call
• GND CALL - there is an incoming call
• IN QUEUE - an incoming call has been placed in SATCOM queue.
Push – MAKE CALL
• initiates a SATCOM call to the identifier / number listed below call key
　
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