chanencjer
OPERATING MANUAL
KP 601A-6
SECTION 6
COMMUNICATIONS
1. GENERAL
The a i r c r a f t communication systems consist of the following systems:
VHP communication system
HF communication system
Selcal system
Audio integrating system
Flight compartment voice recorder system
2. VHP COMMUNICATION SYSTEM (Figures 1 and 2)
The VHF communication system provides short-range AM voice communication over
the frequency range of 118.000 to 151.975 MHz. The system i s a dual system,
consisting of the VHF communication system No. 1 (VHF 1) and the VHF
communication system No. 2 (VHF 2 ) . Control and selection of the VHF 1 and VHF
2 audio are provided by the audio integrating system.
The VHF 1 and VHF 2 consist of a transceiver, a control unit and an antenna
each.
3. HF COMMUNICATION SYSTEM (Figures 3 through 5)
The HF communication system is used for long-range voice communication over the
high-frequency band (2.000 to 29.999 MHz) and operates in the upper sideband
(USB), lower sideband (LSB), amplitude modulation equivalent (AME), continuous
wave (CW), or optional frequency modulation (FM) mode. Communication is
possible in simplex or half-duplex mode, and the system is monitored by the
selective calling (Selcal) system (refer t o paragraph 4 . ) . The system consists
of two HF radio f a c i l i t i e s (HF1 and HF2) operating through a common notch
antenna.
The HF communication system consists of two HF receiver-exciter units, two
power amplifier-coupler units, two control units and a single notch antenna.
SECTION 6
Page 1
Apr 02/87
chauenaer
OPERATING MANUAL
PSP 601A-6
SELCAL SYSTEM (Figures 6 and 7)
The selcal decoder permits ground stations equipped with tone-transmitting HF
communication equipment to call the aircraft by means of a coded signal. When
the correct coded signal is received, the aircraft decoder produces an output
to the aural warning system to operate the selcal chime tone- The selcal
system also provides outputs for two PRESS TO RESET switch/lights on the selcal
control unit- The PRESS TO RESET switch/lights indicate incoming calls for the
associated HF communication system. Selective calling eliminates the necessity
of continuous monitoring of HF frequencies by the flight crew.
A TEST switch on the selcal control unit permits the selcal system to be tested.
The selcal system consists of the decoder unit and associated annunciators and
the switch/lights.
AUDIO INTEGRATING SYSTEM (Figures 8, 9 and 10)
The audio integrating and interphone are combined into one system. The audio
integrating controls are described in the systems which the controls concern.
The audio integrating system receives audio inputs from the following systems:
VHF navigation systems (VHF/NAV 1 and VHF/NAV 2)
Automatic direction finder systems (ADF 1 and ADF 2)
Distance measuring equipment systems (DME 1 and DME 2)
Aural warning system
VHF communication systems (VHF 1 and VHF 2)
HF communication systems (HF 1 and HF 2)
The interphone provides communication between the pilot, copilot and three
ground crew stations- Interphone communication can be made, without the use of
any controls, between any two stations in the systems, with one exception: if
a pilot's MIC selector switch is in position 1 or 2, the pilot can listen on
interphone but cannot talk on i t . When the switch is in the INPH position, the
microphone output is routed to the interphone line. The INPH position of the
MIC selector switch is a hot mike position for interphone operation.
SECTION 6
Page 2
Apr 02/87
OPERATING MANUAL
PSP 601A-6
The interphone channels do not have volume controls. The microphone circuits
for the nose wheel well and the API! stations are disconnected in flight.
An emergency mode of operation is automatically initiated by the system when a
power supply failure occurs in the pilot's or copilot's audio channel in the
audio electronics unit. In this mode, the pilot's or copilot's microphones and
keylines bypass the audio electronics unit and are connected directly to the
associated VHF radio sets. Also, audio from the associated VHF and NAV
receivers, and from the aural warning and voice advisory systems is connected
directly to the pilot's and copilot's headphones.
6. FLIGHT COMPARTMENT VOICE RECORDER SYSTEM (Figure 11)
The flight compartment voice recorder system continuously records radio
communication, flight crew conversations, and flight compartment sounds. The
audio integrating system (refer to paragraph 5.) supplies the communications
input signals to the flight compartment voice recorder system. The input
signals consist of all signals transmitted and received over the pilot's
microphone headset. Flight crew conversations and flight compartment sounds
are picked up by the microphone monitor and remote microphone. Operation of
the compartment voice recorder is automatic and begins when the aircraft busses
are energized.
SECTION 6
Page 3
Apr 02/87
OPERATING MANUAL
PSP 601A-6
RMT ANNUNCIATOR
indicates when the VHP
communication system is remotely
tuned. Not used in this installation.
S\
ACTIVE ANNUNCIATOR
Rashes while the active frequency is
changed. Continues to flash if the
actual frequency differs from that
shown on the display
ACTIVE FREQUENCY DISPLAY
Displays the active frequency,
diagnostic messages, and memory
channel numbers.
PRESET FREQUENCY DISPLAY
Displays the preset (inactive)
frequency, diagnostic messages, and
memory channel frequencies.
MEM ANNUNCIATOR
Indicates when a stored frequency is
displayed in the lower display.
VOLUME CONTROL
Controls the receiver audio level.
MODE SELECTOR
ON and OFF positions switch system
power. SQ OFF position disables the
receiver squelch.
AUTOMATIC DISPLAY DIMMER
SENSOR
Automatically controls the display
brightness.
SELF-TEST PUSHBUTTON
Inmates the transceiver self "test
TRANSFER/MEMORY RECALL
SWITCH
in the XFR position, the displayed
preset frequency becomes the active
frequency and the transceiver
retunes. in the MEM position, one of
the six memory frequencies is loaded
into the preset display. Six
operations of the switch cycle all
memory frequencies through the
display.
TRANSMIT ANNUNCIATOR
Indicates that the transceiver is
transmitting.
FREQUENCY SELECTORS
Selects the active or preset
frequency. The outer knob changes
two digits to the left of the decimal
point in 1-MHz steps. The inner
knob changes the two digits to the
right of the decimal point in 5t>kH2
steps, or in 2S-kHz steps after the
direction of rotation is reversed.
ACTIVE PUSHBUTTON
Enables the frequency select controls
to directly retune the transceiver
active frequency. Deletes the preset
frequency display while direct tuning
ts m progress.
CENTRE PEDESTAL
VHF Communication System Control Unit SECTION6
Figure 1 Page 4
Apr 02/87
cftanenaer
OPERATING MANUAL
PSP 601A-6
PILOT'S OXYGEN MASK
AND STOWAGE
COPILOT'S OXYGEN
MASK AND STOWAGE
PILOTS AND COPILOT'S
MICROPHONE AND
HEADPHONE JACKS
Selects (up position> VHF 1 audio
for presentation on the speaker
and/or headphones.
©
A SPKR/PHONE SWITCH
Switches audio to speaker.
headphones, or both, but pilot's
speech on interphone is not
transferred to speaker.
VHF 2 MONITOR SWITCH
Selects (up position)
VHf 2 audio for
presentation on the
speaker and/or
headphones.
0 9 9 8 0 0 0 0 0 8
NOTE
A1 \ r f power fate in either channel of the
audio electronics unit, the controls
will not function.
Emergency Operation: PSot can
use VHF 1 and hear NAV 1 without
volume control. Copilot can use VHF
2 and hear NAV 2 without volume
control.
« C
Turns microphone on
continuously by bypassing J1
press-to-transmit switch. J I
SPKR VOL CONTROL
Varies volume of audio to speaker
and headphones except aural
warning. Turn clockwise to increase
volume.
A
BOOM/OXY SWITCH
Connects headset boom • / /
microphone or oxygen
mask microphone to
system.
MIC SWITCH
When set to the 1 or 2
position, connects the
headphones, microphone
and push-to-transrnh (PTT)
switch to the VHF 1 or
VHF 2. respectively.
VHF Communication System Selection/Control -
Audio Integrating System
Figure 2
SECTIONS
Page 5
Apr 02/87
OPERATING MANUAL
PSP 601A-6
1 HF1
1
1
HF2 1
•j SELCAL
m " - ' '
i f
HF
\ ANTENNA
A
^ _i
i
^ — .... ... .
, -^1 SaCAL I
HF 1 SELCAL
SWITCH/UGHT
.... ._^ JPRESS 1
J TO 1
I RESET!
«y
AUDIO
INTEGRATING
SYSTB/I j
i
HF2
swm
r w%
SELCAL
:H/UGK
PRESSl
TO 1
RESET|
M
T
I •*» ••» *©• •» •*• 1
PILOTS AUDIO CONTROL UNIT
3 00088.88 8 88 Q
COPILOTS AUOIO CONTROL UNIT
HF Communication System -
Simplified Block. Diagram
Figure 3
SECTION 6
Page 6
Apr 02/87
canadair
chauenejer
OPERATING MANUAL
PSP 601A-6
FREQ/LD PUSHBUTTON
The FREQ/LD pushbutton performs the functions
described for the following operating modes:
PGM mode (simplex) - Loads selected receive-transmit
frequency and mode into selected channel of
programmable PRESET memory.
PGM mode (duplex) - Loads selected receive frequency
and mode into selected channel of programmable preset
memory. To load the transmit frequency, the FREQ/LD
pushbutton must be pressed while the trarisminer is keyed.
MAR and CHN mode (duplex) - Causes the transmit
frequency to be displayed when pressed while the
transmitter is keyed.
OPR MODE FREQ/CH.l
H
F
M O M B BO/ «
I! OS 00 Nl L J D ' I
PWR
VOL CONTROL
Adjusts the receiver audio
level.
VALUE CONTROL
Alters the field marked
by the cursor.
SQL CONTROL
Eliminates background noise
when the signal is not
received.
Disables the squelch
function.
CURSOR CONTROL
Used to position the cursor
to the left or right.
CHAN SELECTOR
Selects one of ten
preset frequencies for
display on the
FREQ/CHAN display.
The preset frequency
channel number is
indicated by the last
digit of the
FREQ/CHAN display.
CENTRE PEDESTAL
HF Communication System Control Unit SECTION 6
Figure 4 (Sheet 1) Page 7
Apr 02/87
OPERATING MANUAL
PSP 601A-6
OPR DISPLAY
Displays one of the following operating modes, or conditions:
MAN -Manual frequency control mode
CHN - User programmable preset channel mode
MAR - Preprogrammed maritime preset mode
TST - Serf-test mode
PGM - User programmable preset channel program mode
^ R - Emergency pn^ooiamrned preset channel mode
SCN - Scan mode
EXT - External system control mode
SBY - Standby mode
FLT - Fault
WRG -Warning
VOL - Displayed Momentarily after the VOL control is moved
SQC - Displayed momentarily after the SQL control is moved
MODE DISPLAY
Displays the type of RF mode selected by the VALUE control:
- Upper sideband voice
- Lower sideband voice
- Upper sideband data
- Lower sideband data
- Amplitude modulation equivalent
- Continuous wave
- Frequency modulation
OPR MODE// FREQ/CHAN PWR
CURSOR
When positioned under a
field, allows that field's
values to be changed. The
cursor is positioned using the
CURSOR control.
00/ D D U C D 1 5
J o OULJ 0 g
FREQ/LD CURSO!
VALUE
FREQ/CHAN DISPLAY
The first five digits, from the
left, display the selected
frequency. The test digit
indicates the selected
channel. If a faulty module is
detected during a self-test,
the faulty unit number is
displayed.
PWR DISPLAY
Indicates the output power
level selected by the value
control.
Low Power - Bottom bar
Medium Power - Bottom two bars
High Power - Three bars
CENTRE PEDESTAL
HF Communication System Control Unit SECTION 6
Figure 4 (Sheet 2) Page 8
Apr 02/87
chauenejer
OPERATING MANUAL
PSP 601A-6
PILOT'S OXYGEN MASK
AND STOWAGE
COPILOT'S OXYGEN
MASK AND STOWAGE
LJPUSH-
TO-TRANSMIT
SWITCH
Keys the system selected
by the MIC switch.
HF 1 MONITOR SWITCH
Selects Cup position) HF 1
audio for presentation on
the speaker and/or
headphones.
PiLOT'S CONTROL
WHEEL CCOPILOT'S
OPPOSITE)
PILOTS AND COPILOT'S
MICROPHONE AND
HEADPHONE JACKS
©
A SPKR/PHONE SWITCH
Switches audio to speaker.
headphones, or both, bo: pilots
speech on interphone is not
vznsterred to speaker.
| ^ NAV MKR ADF * VHF _j
P 6 99 Q 9 90 9 9 QM
-OFF I
O
|As
HF 2 MONITOR SWITCH
^Selects (up position) HF 2
\ j audio for presentation on
\ 1 the speaker and/or
\ I headphones.
H?\
A
NOTE
If power tails in either channel of the
audio electronics unit, the controls
win not function.
Emergency Operation: Pilot can
use VHF 1 and hear NAV 1 without
volume control. Copdot can use VHF
2 and hear NAV 2 without volume
control.
^SPKR VOL CONTROL
HOT OXY
;OOM
2 HF1,HF2
V-INPH
^
MIC
Varies volume of audio to speaker
and headphones except aural
warning. Turn clockwise to increase
volume. A HOT MIC
Turns microphone on
continuously by bypassing
press-to-transmit switch.
BOOM/OXY SWITCH
Connects headset boom
microphone or oxygen
mask microphone to
system.
A MIC SWITCH
When set to the HF l or
HF 2 position, connects
the headphones.
microphone and push-to
transmit <
TT) switch tothe HF communication
system No. T and HF
communication system
No. 2. respectively.
HF Communication System Selection/Control -
Audio Integrating System
Figure 5
SECTION 6
Page 9
Apr 02/87
OPERATING MANUAL
PSP 601A-6
I HF1
HF2
L RECEIVE AUDIO
RECEIVE AUDIO
SELCAL
SYSTEM
m-- < '--J
fc
! W
HF7
PRESS
TO
RESET
TEST
HF2
PRESS
TO
RESET
w I
AURAL
WARNING
SYSTEM
Selcal System - Simplified Block Diagram
Figure 6
SECTION 6
Page 10
Apr 02/87
"EfiJSieiiQer
OPERATING MANUAL
PSP 601A-6
HF1 PRESS TO RESET
SWITCH/LIGHT
Come on to indicate an
incoming cail on the HF 1.
When pressed, resets the
seicai system, and the
PRESS TO RESET
switch/light goes out.
HF2 PRESS TO RESET
SWITCH/LIGHT
Comes on to indicate an
incoming caii on the HF2.
When pressed, resets the
seicai system, and the
PRESS TO RESET
switch/light goes out.
b PRESS
TO
RESET
TEST
HF
1
SELCAC
d
TEST SWITCH
When set to the TEST
position, simulates an
incoming cat!.
COPILOrS SIDE PANEL
Seicai System Control Unit SECTION6
Figure 7 Page 11
Apr.
OPERATING MANUAL
PSP 601A-6
JQ PILOT'S
[*" MICROPHONE
I AND HEADSET
PILOTS OXYGBI
MASK MICROPHONE
D *
l | -o
PILOTS
PTT SWITCH
MARKER BEACON NO. 1
VHF/NAV1 RXNAV AUDIO
MARKER BEACON NO. 2
VHF/NAV2 KXNAV AUDIO
ADF1
ADF2
RX AUDIO
RX AUDIO
TXAUDIO/PTT
HF1 HI RX AUDIO
TXAUDIO/PTT
HF2 ERX AUDIO
VHF1
TXAUDIO/PTT
RX AUDIO
TXAUDIO/PTT
VHF2 [«RX AUDIO
«IH>
COPILOTS
PTT SWITCH
COPILOTS OXYGBY
MASK MICROPHONE
Vb2
COPILOTS
MICROPHONE
AND HEADSET
AURAL WARNING A U D !0
S Y S T ^
A NOTE
The APU and wheel well interphone
units are inoperative while in tight.
AUDIO
INTEGRATING
SYSTBU
Audio Integrating System -
Simplified Block Diagram
Figure 8
TO FLIGHT
- • COMPARTMENT VOICE
RECORDER
FLIGHT
COMPARTMENT
SPEAKER
P 6 Q 0 Q QoQ 8 8 Q 0 H
PILOTS AUDIO CONTROL UNIT
88 ©0 O d
COPILOTS AUDIO CONTROL UNIT
FUGHT
COMPARTMENT
SPEAKER
J> RADIO RACK
INTERPHONE
MICROPHONE AND
HEADSET
J) APU INTERPHONE
MICROPHONE AND
HEADSET
J>. WHKLWELL
^ INTERPHONE
A MICROPHONE AND
/ 7\HEADSET
SECTION 6
Page 12
Apr 02/87
ctiaiientjer
OPERATING MANUAL
PSP 601A-6
PILOTS OXYGEN
MASK AND
STOWAGE COPILOT'S OXYGEN
MASK AND
STOWAGE
MIC SWITCH
When set to 1NPH position.
connects the headphones and
microphone to the interphone. The
audio output selected by the monitor
switches can also be heard. The PTT
switch is not operational.
When in the 1, 2. HF 1 or HF 2
position the pilot/copitot can
monitor the interphone but cannot
talk on the interphone.
PILOTS AND COPILOTS
MICROPHONE AND
HEADPHONE JACKS
O
NAV MKR ADF
P 0 0000 666 00 <?j
SPKR DME
SPKR/?=^\ l 2
A SPKR/PHONE SWITCH
Switches audio to speaker,
headphones, or both, but pilot's
speech on interphone is not
transferred to speaker.
PHONE v/n. V^OFF J
A
A NOTE
If power late in either channel of the
sudk> electronics unit, the controls
wffl not function.
Emergency Operation: Pilot can
use VHF 1 and hear NAV 1 without
volume control. Copilot can use VHF
2 and hear NAV 2 without volume
control.
1 ^ SPKR VOL CONTROL
Varies volume of audio to speaker
and headphones except aural
warning. Turn clockwise to increase
volume.
O
B00M/OXY SWITCH
Connects headset boom microphone
or oxygen mask microphone to
system.
Interphone Audio Selection/Control -
Audio Integrating System
Figure 9
SECTION 6
Page 13
Apr 02/87
OPERATING MANUAL
PSP 601A-6
NOSE WHEEL
WELL STATION
HDPH MIC
o , ® o
INTERPHONE UNIT FOR WHEEL WELL. APU.
RADIO RACK
No controls on the unit. Operator talks and listens to
aO stations that are using the interphone.
NOTE
Although units are for use on the ground, imenjhone is functionaJry complete in the
air. except that the microphone circurts of the nose wheel and APU stations are
disconnected.
Audio Integrating System - Interphone Units
Figure 10
SECTION 6
Page 14
Apr 02/87
cftanenqer
OPERATING MANUAL
PSP 601A-6
REMOTE MICROPHONE
Picks up voice
communication in the
flight compartment.
METER
Used to monitor tone burst
during test.
TEST SWITCH
inmates operational test of
voice recorder.
ERASE SWITCH
When activated for at least two
> seconds. Erases the entire
recorded information, provided
the aircraft has landed and the
parking brake is on.
HEADSET
600 OHMS
COCKPIT VOICE RECORDER
HEADSET MONITOR JACK
Provides for connection of a
headset for continuous and
simultaneous monitoring of aH
four recorded channels.
Flight Compartment Voice Recorder System -
Controls and Indicators
Figure 11
SECTION 6
Page 15
Apr 02/87
