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VHF COMMUNICATION
DESCRIPTION
The VHF-4000 is a remote-mounted very high frequency (VHF) communications transceiver. Two VHF radios are standard,
with an option for a third VHF radio. VHF radio displays are integrated into the lower part of the left and right MFDs.
The radios can be controlled through the display control panels on the glareshield or the FMS central display unit. The radios
operates in the domestic VHF communications band from 118.000 through 136.991 MHz. When tuning in 25kHz increments
tuning is from 118.000 to 136.975MHz. In 8.33 kHz increments, tuning is from 118.000 to 136.991 MHz.
GENERAL MFD TUNING
The MFD and the Display Control Panel (DCP) provide single point control of both the on-side and cross-side radios from
the pilot’s and copilot’s position. The radio menu provides an “at a glance” summary of the radios as well as control for
each.
1. Push the RADIO button on the DCP to show the MFD radio menu if another menu/list is active.
2. Push the 1/2 button if necessary to alternately select the side 1 radios and the side 2 radios.
3. Turn the MENU knob on the DCP to move the selection box on the radio menu to the radio (COM, NAV, ATC/
TCAS, etc.) frequency or channel that is to be tuned.
4. Turn the TUNE knob on the DCP to tune the desired frequency or channel.
- The larger (outer knob) tunes the digits to the left of the decimal point.
- The smaller (inner knob) tunes the digits to the right of the decimal point.
5. To activate the new frequency/channel:
- Push the transfer button in the center of the tune knob.
6. To change modes, adjust squelch, and other non-tuning functions of a radio:
- Turn the MENU knob to move the selection box to the appropriate radio (COM1, NAV2, ATC/TCAS, etc.)
- Push the RADIO button on the DCP to select the submenu.
- Turn the MENU knob to move the selection box on the submenu.
- Turn the DATA knob to change the mode or select an option)i.e, tune mode, squelch level, traffic mode, etc.)
- Push the PUSH SELECT button to step through available options. (the PUSH SELECT button acts the same
as the DATA knob in selecting options)
- To exit the sub menu, push the RADIO button. The display returns to the radio menu.
NOTE: The menu is automatically removed 20 seconds after the last activity of the MENU, DATA, or PUSH SELECT
knob, or when another menu or list button is pushed.
COMMUNICATIONS
Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6 06-01-07
VHF COMMUNICATION (Cont)
DISPLAY CONTROL PANEL COM RADIO OPERATION
The radio menu provides basic COM radio tuning control. The COM submenu provides control display for other COM
radio operation. Each COM radio installed on the aircraft has its own submenu. The active frequency, recall frequency, and
squelch status displays are identical to the display on the radio menu.
The current control location is indicated by a cyan control box. The default location is the last tuned communication radio
(VHF or HF). After 20 seconds of inactivity, the cyan control box returns to the default location.
Selecting the 1/2 button results in the cross side radios being displayed and the radio legends being displayed in yellow.
.
- Push the RADIO button on the DCP to show the radio menu on the MFD if another menu/list is active
- Turn the MENU knob on the DCP to move the selection box to the desired radio (COM 1, COM 2, COM 3 if
installed) display on the radio menu.
- Push the RADIO button on the DCP to show the appropriate submenu on the MFD
- The following operations are performed on the submenu
- Change the SQUELCH mode
- Turn the MENU knob to move the selection box to the SQUELCH control.
- Turn the DATA knob or push the PUSH SELECT button to select the squelch ON or OFF
- Change the frequency spacing for radio tuning
- Turn to MENU knob to move the selection box to the FREQ SEL control.
- Turn the DATA knob or push the PUSH SELECT button to select 8.33 or 25 kHz spacing for tuning
- Select the COM TEST mode
- Turn the MENU knob to move the selection box to the TEST control.
- Turn the DATA knob or push the PUSH SELECT button to select the TEST mode
- Change the COM 3 mode (only if Voice/Data option is enabled)
- Turn the MENU knob to move the selection box to the COM 3 MODE control.
- Turn the DATA knob or push the PUSH SELECT button to select the VOICE or DATA mode. When
DATA mode is selected, the squelch annunciation, squelch status, transfer arrow, frequency selections
8.33 and 25, and TEST selection do not show on the COM 3 CONTROL menu
1/2 DME/H NAVSRC
RADIO BRGSRC
FRMT TFC TR/WX
REFS RADAR
TUNE MENU DATA TILT RANGE
SUP
H
AUTOTL I T
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Bombardier_Challenger_Global_00-Communications(4)
