曝光台 注意防骗
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application of power to the aircraft.
CIPHER Enables CIPHER relay mode.
OFF Relay mode disabled.
PLAIN Enables PLAIN voice relay mode
23.2.1.2.2 G XMIT (Guard Transmit) Switch. The G XMIT switch, located on the COMM control
panel, is used to manually tune the COMM 1 or COMM 2 receiver-transmitter to the guard frequency
of 243.0 MHz (AM). This function is provided in case the normal (UFCD) and primary backup modes
A1-F18EA-NFM-000
VII-23-5 ORIGINAL
(UFC BU format) of frequency selection are lost.
COMM 1 Selects COMM 1 transmit.
OFF Normal COMM operation selected.
COMM 2 Guard frequency manually selected on COMM 2.
23.2.1.3 COMM 1 ANT SEL (Antenna Select) Switch. The COMM 1 ANT SEL switch, located on the
ANT SEL panel on the outboard left console, is used to manually select the upper or lower blade
antenna for COMM 1 reception/transmission.
UPPER Manually selects the upper blade antenna.
AUTO COMM 1 automatically selects the antenna receiving a usable signal.
LOWER Manually selects the lower blade antenna.
COMM 1 receiver-transmitter automatically selects the antenna receiving a usable signal.
23.2.1.4 COMM Throttle Switch. The COMM throttle switch, located on the inboard side of the
right throttle, is used to enable radio transmission on COMM 1 or COMM 2. The switch is
spring-loaded to the center position.
Up
(Unmarked)
Selects COMM 1 transmit.
Center
(Unmarked)
Both COMMs in receive.
Down
(Unmarked)
Selects COMM 2 transmit.
23.2.1.5 COMM Foot Pedal Switches (F/A-18F). In the missionized configuration the COMM
switches, located on the fixed foot pedals of the rear cockpit, are used to enable radio transmission on
COMM 1 and COMM 2. Each switch is spring-loaded to the up position.
Left
Down
(Unmarked)
Selects COMM 1 transmit.
Both Up
(Unmarked)
Both COMMs in receive.
Right
Down
(Unmarked)
Selects COMM 2 transmit.
23.2.2 COMM 1 AND 2 OPERATION. The operation of COMM 1 and 2 is identical. The following
description addresses only COMM 1; however, it should be understood that the description is
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VII-23-6 ORIGINAL
applicable to COMM 2. Power to COMM 1 is applied by rotating the VOL 1 COMM control knob
clockwise. Power application is identified by a corner highlight in the upper left corner of the COMM
1 touch option/display. The channels and preset frequencies (CH 1 thru 20), CH G, CH M, CH C and
CH S may be selected by rotating the COMM 1 channel select knob until the desired CH sub level and
fixed frequency are displayed in the COMM 1 touch option/display. In the anti-jam mode, the fixed
frequency is replaced with H1, H2 or SG. When COMM 1 is actively receiving, the upper half of the
touch option/display is half intensity highlighted. The active receive indication is available only if the
radio is powered.
23.2.2.1 Top Level CNI Format Channel or Manual Frequency Change. In the top level CNI
format, the preset channel number is changed by touching the desired channel number on the keypad
and then touching the COMM 1 touch option/display (fast data entry). If an invalid channel entry is
made, ERROR is displayed in the scratchpad.
The manual frequency can be changed using the fast data entry mechanization. The manual
frequency is entered by entering the desired frequency on the keypad display and touching the COMM
1 or COMM 2 touch option display. Trailing zeroes need not be selected. If an invalid manual
frequency entry is made, ERROR is displayed in the scratchpad and the radio does not go to the CH
M (manual) channel. Highlighting the MAN option and subsequently touching the desired radio,
changes that radio to the programmed MAN frequency.
23.2.2.2 COMM Sublevel Selection. Touching the COMM 1 touch option/display while on CH 1
thru 20, CH G, CH M, CH C, or CH S selects that sublevel mode. When applicable, the sublevel mode
is used to:
1. Change a fixed frequency,
2. Change ship maritime preset,
3. Change the guard or cue frequency,
4. Enable or disable cipher mode,
5. Adjust squelch,
6. Enable or disable guard receive,
7. Enable or disable ADF,
8. Select modulation type (AM or FM),
9. Enter anti-jam mode (AJ or AJ MENU),
10. Access Have Quick, Have Quick time, SINCGARS coldstart, Have Quick manual data fill, or
SINCGARS zeroize.
23.2.2.3 COMM Sublevel - Ship Maritime Preset. The Ship Maritime Preset COMM Sublevel is
selected by touching the COMM 1 touch option/display with CH S previously selected (see figure 23-2).
This sublevel is used to enable or disable squelch, cipher mode, guard receive, or ADF operation.
Selecting this sublevel displays a 1: (selected radio) followed by an S and the current ship maritime
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NATOPS Flight Manual 飞行手册 2(75)
