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ATC/TCAS ADF1
TCAS DSPY 1
COM1 NAV1
121.90 131.10
1605 620.0
2000
To EXIT
Press and hold
HF1
NB
TEMP−1
112.00
2000
STANDBY ANT
UV
ALT:REL
NORMAL
ADF1
NAV1
131.10
620.0
2000
ATC/TCAS
TCAS DSPY 1
COM1
121.90
1605
COMMUNICATIONS
Flight Crew Operating Manual REV 41, Jul 08, 2004
CSP 700−6
Volume 2
06−10−18
COM MEMORY
Any of the memory locations displayed inside the cursor can be changed by tuning and storing a new
frequency. When the new frequency is tuned, the identifier will change from “MEMORY” to “TEMP”.
GF0610_042
121.90
MEMORY−1 TEMP−1
113.10
COM1 NB
118.00 112.00
ATC/TCAS ADF1
NAV1
TEMP−1
130.27
TEMP−1
113.10
COM1 NB NAV1
118.00 112.00
ATC/TCAS ADF1
To recall stored frequencies, select the cursor to the memory location annunciator on the main radio
page, by pushing the line select key adjacent to the preset com frequency two times. Rotate the tune
control knob to view the frequencies stored (1−12) in memory.
GF0610_043
Recall Stored
Frequencies
MEMORY−1
130.27
TEMP−1
121.90 113.10
TEMP−1 TEMP−1
113.10
COM1 NB NB
118.00 112.00
ATC/TCAS ADF1
NAV1 COM1 NAV1
118.00 112.00
ATC/TCAS ADF1
The temporary preselect frequency is assigned a numbered location, provided the cursor has been
first placed around the identifier. While on the main tuning page, press the “PGE” function key to go
to page menu, then select the com memory page. The COM MEMORY page provides the following:
GF0610_044
COM1
118.00
130.27
151.67
133.00
2
3
1 4
5
6
INSERT
DELETE
MORE
RETURN
MEMORIES
NB NARROW
BANDWIDTH
SELECT
Active COM
Frequency
Bandwidth Select Annunciator
Memory
Location
Selectable from
Function Keys
Pressing the top right
transfer key while on the
COM memory page will
toggle the receiver
bandwidth from narrow
to wide or vice versa.
Comm Memory
Page NOTE
COMMUNICATIONS
REV 41, Jul 08, 2004 Flight Crew Operating Manual
CSP 700−6
Volume 2
06−10−19
HIGH FREQUENCY (HF) COMMUNICATION SYSTEM
The HF communication system is a dual configuration integrated with the radio system on the
airplane. The system provides long range air-to-air and air-to-ground communications, operates in
the 2.0000 to 29.9999 Mhz range and consists of:
• Two transceivers/antenna couplers.
• One antenna.
The basic radio control functions are:
• HF COM mode and frequency.
• Audio selection and volume control.
Frequency and mode control of the remotely located HF radios can be input from either the RMUs or
the Flight Management System (FMS) CDUs. Both normal Simplex Tuning mode and Emergency
Tuning mode are supported by the FMS. The audio control panels provides microphone selection,
radio headset/speaker audio selection, volume control and audio control switching.
The HF transceiver units (HF COM 1 and HF COM 2) are located in the Aft Avionics Bay. The HF
antenna coupler units are located in the upper Aft Fuselage. The antenna is located in the Vertical
Stabilizer (forms the leading edge).
The RMUs are the central control for the HF Communication System, providing complete capability
for controlling the operational mode and frequencies. Each RMU has the capability to control
operation of its primary (on-side) radio or its secondary (cross-side) radio.
The HF information on each RMU is displayed at the lower right of the radio tuning page. HF
emission mode and status are displayed in the HF window. In order to tune a frequency on HF, one
of the two line select keys on the lower right side of the RMU is pressed. This selection will place the
“cursor tune box” around the frequency to be tuned and using the RMU tuning knobs will accomplish
the desired frequency. The HF System can operate in the following modes: Upper Sideband Voice
(UV), Lower Sideband Voice (LV), Amplitude Modulation Equivalent (AM) and Continuous Wave
(CW).
RMU HF DISPLAY
GF0610_045
ATC/TCAS ADF1
HF1
COM1 NB NAV1
118.00 131.10
131.27
MEMORY−1 TEMP−1
1605 620.0
2000
STANDBY ANT
UV
112.00
HF Line Select Keys
Cursor Box
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