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EA-18G. FLIGHT MANUAL (2008) - page 10

A1-E18GA-NFM-000

Figure 23-1. Aft Cockpit Rudder Pedal Switches

Frequency Band (MHz)

Modulation

Guard Channel (MHz)

30 to 87.995

FM

121.5

*108 to 135.995

AM

−

136 to 155.995

AM/FM

−

156 to 173.995

FM

−

225 to 399.975

AM/FM

243.0

(AM)

*Cannot transmit on 108 thru 117.995 MHz

Transmission and reception of amplitude and frequency modulated signals (AM and FM) occur in

the respective frequency bands on spaced channels of 5 kHz. Twenty channels in the 30 to 400 MHz

band may be pre-set to assigned frequencies.

23.3.1 VHF/UHF Controls and Indicators. The COMM 1 and COMM 2 are operated by

1. Controls on the UFCD,

2. Controls on the ICS,

3. COMM 1 and 2, MIDS A and B transmit switches on the right (inboard) throttle grip,

4. COMM 1 and 2 transmit switches on the left and right rear cockpit rudder pedals respectively.

The PTT panel controls the rudder pedal selection of Comm 1 or MIDS A, and Comm 2 or MIDS

B. The PTT panel is located on the left hand outside bulkhead.

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must be manually entered. Rotating either knob with any AJ MENU sublevel selected returns the

UFCD to the COMM sublevel.

Figure 23-2. Top Level CNI Format on Up Front Control Display (UFCD)

23.3.1.1.3 COMM Keypad Options and Scratchpad Display. In the top level CNI format twelve

keypad options and a scratchpad display may be used to change the CH 1 thru 20 preset channel

numbers, CH G (guard) frequency, CH M (manual frequencies), CH C (cue channel/frequency) or CH

S (ship maritime frequencies). The keypad options are 0 thru 9, CLR (clear) and N-E-W-S (shifted).

23.3.1.1.4 COMM Touch Option/Displays. On the top level CNI format ten touch option/displays

may be used to select COMM 1, COMM 2, or other sublevel formats. The upper right and lower right

touch option/displays are dedicated to the COMM 1 and COMM 2 radios respectively. Selecting other

sublevel formats does not remove the COMM 1 and 2 touch option/displays.

The COMM 1 and COMM 2 channel displays are also utilized to visually identify which audio

sources are currently active. When an active radio transmission is occurring, the upper half of the

COMM 1/2 option is background shaded. When an active MIDS transmission is occurring, the lower

half of the COMM 1/2 option is background shaded.

Both UFCDs indicate an active transmission in progress when either cockpit initiates the

communication. The active transmission indication is a rectangular border around the source (upper

for COMM, lower for MIDS). When the active transmit cue is illuminated, the frequency of the related

radio is partially covered on the aft UFCD.

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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.

Figure 23-3. COMM Sublevel - Ship Maritime Preset

23.3.2.3 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 23-3).

This sublevel is used to enable or disable squelch, cipher mode, or guard receive. Selecting this sublevel

displays a 1: (selected radio) followed by an S and the current ship maritime preset number. The ship

maritime preset number is changed by touching the desired number(s) on the keypad options

(numbers 1 thru 28 or 60 thru 88), verifying the new number in the scratchpad, and touching the CH

S option. If an invalid number is entered, ERROR is displayed in the scratchpad. CPHR (cipher),

SQCH (squelch), and GRCV (guard receive) are enabled or disabled by touching the respective touch

options/displays. An enabled option has a highlighted border. CPHR operation is available for only one

radio at a time. Enabling CPHR on COMM 1 automatically disables CPHR on COMM 2 if previously

enabled.

The modulation type (AM or FM), AJ, or AJ MENU options are not available on this sublevel.

23.3.2.4 COMM Sublevel - Guard and Cue Presets. The Guard or Cue Preset COMM Sublevel is

selected by touching the COMM 1 touch option/display with CH G or CH C previously selected (see

figure 23-4). This sublevel is used to change the G (guard) or C (cue) frequency, to enable or disable

squelch, cipher mode, guard receive, or to select modulation type (AM or FM). Selecting this sublevel

displays a 1: (selected radio) followed by a G or C and the current fixed frequency. The fixed frequency

is changed by touching the desired numbers on the keypad options, verifying the new number in the

scratchpad, and the desired Comm option. Valid frequencies are:

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Figure 23-4. COMM Sublevel - Guard and Cue Presets

1.

30 thru 87.995 MHz (FM) - at increments of 0.005, 0.025 MHz for C

2.

108 thru 135.995 MHz (AM) - at increments of 0.005, 0.025 MHz for C

3.

136 thru 155.995 MHz (AM/FM) - at increments of 0.005, 0.025 MHz for C

4.

156 thru 173.995 MHz (FM) - at increments of 0.005, 0.025 MHz for C

5.

225 thru 399.975 MHz (AM/FM) - at increments of 0.025 MHz.

If an invalid number is entered, ERROR is displayed in the scratchpad.

SQCH (squelch), GRCV (guard receive), and AM/FM are enabled or disabled by touching the

respective touch options/displays. An enabled option has a highlighted border. The AM/FM option is

always border highlighted and toggles between AM and FM. If the current frequency is available only

in AM or FM, the AM/FM option is not displayed. While in the UHF AM mode, the cipher option

cycles as follows: CPHR (no highlighted border-cipher disabled), CPHR (border highlighted-cipher

baseband enabled), CPDP (border highlighted-cipher diphase enabled). The CPHR and CPDP

options are mutually exclusive. Continued selection of this option repeats the above cycle. CPHR (both

diphase and baseband) is available for only one radio at a time. Enabling CPHR on COMM 1

automatically disables CPHR on COMM 2 if previously enabled.

The AJ and AJ MENU options are not available on this sublevel.

23.3.2.5 COMM Sublevel - Manual Preset. The Manual Preset COMM Sublevel is selected by

touching the COMM 1 touch option/display with CH M previously selected (see figure 23-5). This

sublevel is used to change the M (manual) frequency, to enable or disable squelch, cipher mode, guard

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receive, select modulation type (AM or FM) or to access Have Quick, Have Quick time, SINCGARS

coldstart, Have Quick manual data fill, and SINCGARS zeroize. Selecting this sublevel displays a 1:

(selected radio) followed by an M and the current fixed frequency. The fixed frequency is changed by

touching the desired numbers on the keypad options, verifying the new number in the scratchpad, and

touching the desired option.

Valid frequencies are:

1.

30 thru 87.995 MHz (FM) - at increments of 0.005 MHz,

2.

108 thru 135.995 MHz (AM) - at increments of 0.005 MHz,

3.

136 thru 155.995 MHz (AM/FM) - at increments of 0.005 MHz,

4.

156 thru 173.995 MHz (FM) - at increments of 0.005 MHz,

5.

225 thru 399.975 MHz (AM/FM) - at increments of 0.025 MHz.

Figure 23-5. COMM Sublevel - Manual Preset

If an invalid number is entered, ERROR is displayed in the scratchpad.

SQCH (squelch), and GRCV (guard receive) are enabled or disabled by touching the respective

touch options/displays. An enabled option has a highlighted border. The AM/FM option is always

border highlighted and toggles between AM and FM. If the current frequency is available only in AM

or FM, the AM/FM option is not displayed. While in the UHF AM mode, the cipher option cycles as

follows: CPHR (no highlighted border-cipher disabled), CPHR (border highlighted-cipher baseband

enabled), CPDP (border highlighted-cipher diphase enabled). The CPHR and CPDP options are

mutually exclusive. Continued selection of this option repeats the above cycle. CPHR (both diphase

and baseband) is available for only one radio at a time. Enabling CPHR on COMM 1 automatically

disables CPHR on COMM 2 if previously enabled.

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The AJ option is not available on this sublevel.

23.3.2.6 COMM Sublevel - Presets 1 Thru 20 (Fixed Frequency). The Preset 1 Thru 20 COMM

Sublevel is selected by touching the COMM 1 touch option/display with CH (1 thru 20) previously

selected (see figure 23-6). This sublevel is used to change the frequency, to enable or disable squelch,

cipher mode, guard receive, to select modulation type (AM or FM), to enter anti-jam mode or to access

Have Quick, Have Quick time, SINCGARS coldstart, Have Quick manual data fill, or SINCGARS

zeroize. Selecting this sublevel displays a 1: (selected radio) followed by the current channel number

and fixed frequency. The fixed frequency for any channel number (1 thru 20) is changed by touching

the desired numbers on the keypad options, verifying the new frequency number in the scratchpad, and

touching the desired option.

1.

30 thru 87.995 MHz (FM) - at increments of 0.005 MHz,

2.

108 thru 135.995 MHz (AM) - at increments of 0.005 MHz,

3.

136 thru 155.995 MHz (AM/FM) - at increments of 0.005 MHz,

4.

156 thru 173.995 MHz (FM) - at increments of 0.005 MHz,

5.

225 thru 399.975 MHz (AM/FM) - at increments of 0.025 MHz.

Figure 23-6. COMM Sublevel - Presets 1 Thru 20 (Fixed Frequency)

If an invalid number is entered, ERROR is displayed in the scratchpad. SQCH (squelch) and GRCV

(guard receive) are enabled or disabled by touching the respective touch options/displays. An enabled

option has a highlighted border. While in the UHF AM mode, the cipher option cycles as follows:

CPHR (no highlighted border-cipher disabled), CPHR (border highlighted-cipher baseband enabled),

CPDP (border highlighted-cipher diphase enabled). The CPHR and CPDP options are mutually

exclusive. Continued selection of this option repeats the above cycle. CPHR

(both

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diphase and baseband) is available for only one radio at a time. Enabling CPHR on COMM 1

automatically disables CPHR on COMM 2 if it was previously enabled.

Selecting the AJ option on this sublevel selects COMM 1 anti-jam mode. If Have Quick is

pre-defined for the current preset, the radio enters Have Quick mode. If SINCGARS is pre-defined for

the current preset, the radio enters SINCGARS. If no data/waveform or time is stored in the radio for

the current preset, NO FILL is displayed in the scratchpad and the radio is in neither Have Quick or

SINCGARS. For Have Quick or SINCGARS data entry, see Have Quick or SINCGARS System

paragraphs, this chapter. Once the radio is in the anti-jam mode it remains in the anti-jam mode, even

if the preset channel is changed using the COMM channel select knob or the Top Level CNI Format

Channel Change paragraph procedure (fast data entry). The anti-jam mode is disabled by touching the

border highlighted AJ touch option/display.

23.3.3 Anti-Jam Operation. There is no AJ or AJ MENU option on the Ship Maritime Preset, Guard

Preset, or Cue Preset Sublevels. The Manual Preset Sublevel has an AJ MENU option but does not

have an AJ option. Anti-Jam operation is described in the Have Quick and SINCGARS System

paragraphs, this chapter.

Figure 23-7. AJ MENU From Fixed Frequency COMM Sublevel

23.3.3.1 AJ MENU From Fixed Frequency COMM Sublevel. Touching the AJ MENU touch

option/display while on the COMM sublevel with a fixed frequency selects the AJ MENU From Fixed

Frequency COMM Sublevel (see figure 23-7). This sublevel initializes with no options selected and

displays a 1: (selected radio) in the scratchpad but does not display the fixed frequency. The AJ fixed

frequency sublevel is used to control Have Quick time, to control SINCGARS coldstart, to manually

load Have Quick fill, and to control Have Quick and SINCGARS zeroize.

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Figure 23-8. Have Quick Fixed Frequency Sublevel

Quick fixed frequency sublevel (see figure 23-8). This sublevel initializes with no options selected and

displays a 1: (selected radio) in the scratchpad. This sublevel is used for manual fill operation.

The HQ TIME option is used to transmit or receive Have Quick time. Touching the HQ TIME touch

option/display border highlights the option and enables the use of the RCV and XMIT options. With

HQ TIME selected, touching the RCV touch option/display border highlights the RCV option until

time is received, or until 60 seconds has elapsed. With HQ TIME selected, touching the XMIT touch

option/display border highlights the XMIT option for 2 seconds and time is transmitted. The HQ

TIME option remains border highlighted until HQ VDAY, HQ WOD or HQ TNET is selected.

The HQ VDAY option is used to verify that a Have Quick word-of-day is loaded for a particular day

(see figure 23-9). Touching the HQ VDAY touch option/display border highlights the option and

enables calendar day data entry by touching the desired numbers on the keypad options (01 thru 31),

verifying the new calendar day data entry and then touching the HQ VDAY option. If there is a stored

word of day for the entered calendar day a tone sounds in the head set. The HQ VDAY option remains

border highlighted until HQ TIME, HQ WOD or HQ TNET is selected.

The HQ WOD option is used to manually enter the Have Quick word of day. Touching the HQ WOD

touch option/display border highlights this option and enables Have Quick word-of-day entry by

touching the desired numbers on the keypad options (WOD segments 200.000 thru 399.975 in

increments of 0.025), verifying the word of day in the scratchpad, and touching the WOD # option.

Each word-of-day is six-segments that look like frequencies. When the HQ WOD is first selected, 20

is displayed in the scratchpad followed by the first six-segments of data. There are six individual

word-of-day segments identified by the numbers 20 thru 15. As each six-segment data is entered, the

number decrements thru 15. Trailing zeros need not be entered.

• 1st Segment - 20 000.000 HQ WOD option

• 2nd Segment - 19 000.000 HQ WOD option

• 3rd Segment - 18 000.000 HQ WOD option

• 4th Segment - 17 000.000 HQ WOD option

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Figure 23-9. Have Quick WOD Loading

• 5th Segment - 16 000.000 HQ WOD option

• 6th Segment - 15 000.000 HQ WOD option

The last segment (7th) is calendar day and is only two numbers (01 thru 31). After the calendar day

is entered, the HQ WOD option changes to an unhighlighted border WOD LOAD. No data entry is

available with WOD LOAD displayed. Touching the WOD LOAD option sends the word-of-day to the

radio, the option changes back to an unhighlighted border HQ WOD touch option/display, and a tone

sounds in the head set.

At any time during the data entry of the word- of-day, the border highlighted HQ WOD option may

be used to cycle to the next segment without changing the current segment. If on the calendar day

segment, touching HQ WOD cycles to WOD LOAD without changing the calendar day segment. The

HQ WOD option remains border highlighted until WOD LOAD, HQ TIME, HQ VDAY or HQ TNET

is selected. If HQ WOD data entry is exited before completion, the previously entered segments are

maintained and are displayed in the scratchpad when HQ WOD entry is continued.

Selecting the RTN option returns the Have Quick MENU format to the Fixed Frequency Anti-Jam

Menu format.

The HQ TNET option is used to manually enter the Have Quick 2 training nets (see figure 23-10).

Touching the HQ TNET touch option/display border highlights this option and enables Have Quick

2 training net data entry by touching the desired numbers on the keypad options, verifying the

frequency in the scratchpad, and then touching HQ TNET option. When the HQ TNET is first

selected, 20 is displayed in the scratchpad followed by the first training net frequency. There are 16

training net frequencies identified by the numbers 20 thru 5. As each frequency is entered the number

decrements thru 5. Trailing zeros need not be entered.

• 1st Segment - 20 000.000 HQ TNET option

• 2nd Segment - 19 000.000 HQ TNET option

• 3rd Segment - 18 000.000 HQ TNET option

---- ----------- --

--

----- ---

---

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• 14th Segment - 7 000.000 HQ TNET option

• 15th Segment - 6 000.000 HQ TNET option

• 16th Segment - 5 000.000 HQ TNET option

The valid training net frequencies are:

1.

30.000 thru 87.995 MHz (FM) - at increments of 0.025 MHz,

2.

108.000 thru 173.975 MHz (AM) - at increments of 0.025 MHz,

3.

225.000 thru 399.975 MHz (AM/FM) - at increments of 0.025 MHz.

Figure 23-10. Have Quick TNET Loading

After the last training net frequency is entered, the HQ TNET option changes to an unhighlighted

border TNET LOAD. No data entry is available with TNET LOAD displayed. Touching the TNET

LOAD option sends the training net to the radio, the option changes back to an unhighlighted border

HQ TNET touch option/display and a tone sounds in the head set.

At any time during the data entry of the training net, the border highlighted HQ TNET option may

be used to cycle to the next frequency without changing the current frequency. If on the last training

net frequency, touching HQ TNET cycles to TNET LOAD without changing the last training net

frequency. The HQ TNET option remains border highlighted until TNET LOAD, HQ TIME, HQ

VDAY or HQ WOD is selected. If HQ TNET data entry is exited before completion, the previously

entered frequencies are maintained and are displayed in the scratchpad when HQ TNET entry is

continued.

Selecting the RTN option returns the Have Quick MENU format to the Fixed Frequency Anti-Jam

Menu format.

23.4.2

SINCGARS Menu From AJ Menu Fixed Frequency COMM Sublevel. Touching the SG

MENU touch option/display while on the AJ COMM sublevel with a fixed frequency selects the Single

Channel Ground and Airborne Radio System (SINCGARS) MENU fixed frequency sublevel (see

figure 23-11). This sublevel initializes with no options selected and displays a 1: (selected radio) in the

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scratchpad. This sublevel is used for SINCGARS coldstart operation. The SINCGARS coldstart

operation is used for receiving or transmitting SINCGARS hopsets and locksets so a user can be added

to the net. There is a 30 second time-out during option selections.

Figure 23-11. Single Channel Ground and Airborne Radio System (SINCGARS) MENU

Fixed Frequency Sublevel

The SG LSET is used to enter the SINCGARS lockset for transmission or reception. Touching the

SG LSET touch option/display border highlights the option and the last lockset is displayed in the

scratchpad. The lockset may be changed by touching the desired number on the keypad options (1 thru

8), verifying the new lockset in the scratchpad, and touching SG LSET option. With the desired lockset

displayed in the scrathpad, the lockset is transmitted or received by touching the XMIT or RCV

option. Touching the XMIT option transmits the new radio lockset and the option is border

highlighted for 2 seconds. Touching the RCV option enables the radio to receive the lockset and the

option remains border highlighted until the lockset is received.

Touching the SG HSET touch option/display border highlights the option and the last hopset is

displayed in the scratchpad. The hopset may be changed by touching the desired number on the

keypad options (1 thru 20), verifying the new hopset in the scratchpad, and touching SG HSET option.

With the desired hopset displayed in the scratchpad, the hopset is transmitted or received by touching

the XMIT or RCV option. Touching the XMIT option transmits the new radio hopset and the option

is border highlighted for 2 seconds. Touching the RCV option enables the radio to receive the hopset

and the option remains border highlighted until the hopset is received. The XMIT and RCV options

can not be selected at the same time.

Selecting the RTN option returns the SINCGARS MENU format to the Fixed Frequency Anti-Jam

Menu format.

23.4.3 COMM Sublevel - Presets 1 Thru 20 (Anti-Jam). The Preset 1 thru 20 COMM Sublevel

(Anti-Jam) is selected by touching the COMM 1 or 2 touch option/display while on preset channel 1

thru 20 and in Have Quick or SINCGARS anti-jam mode (see figure 23-12).

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Figure 23-12. COMM Sublevel - Presets 1 to 20 (Anti-Jam)

In the Have Quick mode, this sublevel is used to change the net number, to enable or disable squelch,

cipher mode, guard receive, to select modulation type (AM or FM); or to access time receive and time

transmit.

In the SINCGARS mode, this sublevel is used to enable or disable squelch, cipher mode, guard

receive, to access master selection; to enter late net selection; to enter time; and to transmit and receive

hopsets and locksets. This sublevel, displays a 1: (selected radio) followed by H1 (Have Quick 1), H2

(Have Quick 2, or SG (SINCGARS) and the net number. In Have Quick mode, the net number (00.000

thru 99.950) is changed by touching the desired numbers on the keypad options, verifying the new net

number in the scratchpad, and touching the desired mode. The last two digits of the net number must

be 00, 25 or 50. Trailing zeros need not be entered. If invalid data is entered, an error indication is

displayed in the scratchpad. The SINCGARS net number cannot be changed at this sublevel.

SQCH (squelch) and GRCV (guard receive) are enabled or disabled by touching the respective touch

options/displays. An enabled option has a highlighted border. The AM/FM option is always border

highlighted and toggles between AM and FM. If the current frequency is available only in AM or in

FM, the AM/FM option is not displayed. While in the UHF AM mode, the cipher option cycles as

follows: CPHR (no highlighted border-cipher disabled), CPHR (border highlighted-cipher baseband

enabled), CPDP (border highlighted-cipher diphase enabled). The CPHR and CPDP options are

mutually exclusive. Continued selection of this option repeats the above cycle. CPHR (both diphase

and baseband) is available for only one radio at a time. Enabling CPHR on COMM 1 automatically

disables CPHR on COMM 2 if it was previously enabled.

Touching the AJ option returns the selected radio to the COMM fixed frequency sublevel. This

selection applies to all presets and all preset channels which now become fixed frequency.

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Touching the AJ MENU option selects the Have Quick or SINCGARS menu sublevel depending on

whether the current preset is defined as Have Quick or SINCGARS.

If the radio is in anti-jam mode but there is no valid data/waveform or time stored in the current

radio for the current preset channel, the AJ option changes to AJ NO FILL (see figure 23-13). The

AM/FM and AJ MENU options are not displayed when a NO FILL condition exists on the current

preset channel. In this condition, an A is displayed in the scratchpad and a Have Quick net number

may be entered.

Figure 23-13. AJ MENU From Have Quick COMM Sublevel

23.4.4 AJ MENU From Have Quick COMM Sublevel. Touching the AJ MENU touch option/display

while on the COMM sublevel with a Have Quick anti-jam mode selects the AJ Have Quick menu

sublevel initialized with the HQ TIME option selected and border highlighted (see figure 23-14). This

sublevel is used to transmit and receive Have Quick time. The scratchpad information is the same as

scratchpad information on the Have Quick COMM sublevel.

The HQ TIME option is used to transmit or receive Have Quick time while the radio is operating on

a Have Quick net. With the HQ TIME touch option/display border highlighted the option enables the

use of the RCV and XMIT options. Touching the RCV touch option/display border highlights the RCV

option until time is received or until 60 seconds have elapsed. Touching the XMIT touch option/

display border highlights the XMIT option for 2 seconds and time is transmitted.

Selecting the RTN option returns the format to the AJ COMM sublevel.

23.5 SINCGARS SYSTEM

The radio can be operated with SINCGARS, which provides jam resistant line-of-sight (LOS) voice

communications in the VHF band employing frequency hopping. Established communication nets

require a TOD that is coordinated and used by all net users. The system also contains encoded locksets

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Figure 23-14. AJ Have Quick Menu Sublevel

and hopsets that define the set of frequencies that will be hopped on and will not be hopped on. The

system can store multiple nets correlating to hopsets and locksets. The principle functions available for

SINCGARS control are:

a. SINCGARS mode (AJ) selection.

b. Time reception and transmission.

c. Late net entry.

d. Electronic remote fill (ERF).

e. Cue operation.

f. Coldstart.

23.5.1 AJ MENU From SINCGARS COMM Sublevel. Touching the AJ MENU touch option/display

while on the COMM sublevel with a SINCGARS anti-jam mode selects the AJ SINCGARS menu

sublevel (see figure 23-15) and may initialize with the MSTR option or LATE ENTRY option selected,

or no options selected. This sublevel is used to select MSTR (master operation), to select LATE

ENTRY (late entry operation), to enter time, and to transmit and receive hopsets and locksets.

The MSTR option is used to select master control of the net. Automatic time synchronization is

achieved by each of the net radios every time a transmission is received from the master. If the MSTR

option is border highlighted, master control of the net is enabled. If MSTR is not border highlighted,

master control of the net is disabled. The MSTR option toggles between control and no control.

The TIME option is used to enter time. Each user can enter the SINCGARS time. The time can be

used by the master to synchronize the rest of the net or to get on the net using late entry. Touching the

TIME option/display border highlights this option, a D, H, and M is displayed in the scratchpad, and

time data entry is enabled. The time may be entered in D (day), H (hour) and M (month) format by

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Figure 23-15. AJ MENU From SINCGARS COMM Sublevel

touching the desired number on the keypad options, verifying the new time in the scratchpad and

touching TIME option. Trailing zeros need not be entered. If invalid data is entered, ERROR is

displayed in the scratchpad.

The LATE ENTRY is used to gain late entry into the net. Touching the LATE ENTRY

option/display border highlights the option and enables late entry into the SINCGARS net. This

option remains border highlighted until time synchronization into the net is achieved.

Touching the ERF (Electronic Remote Fill) option selects the AJ SINCGARS ERF sublevel (see

figure 23-16). ERF allows the system to be filled electronically over the air by another net user who has

the required net data (hopsets/locksets). The net user can either provide or receive the net data. The

Figure 23-16. AJ SINCGARS ERF Sublevel

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desired hopset/lockset can be selected one at a time for either transmission or reception. The process

is repeated until all desired sets are transmitted/received. This sublevel initializes with no options

selected and displays a 1: (selected radio) in the scratchpad. This sublevel is used for SINCGARS

coldstart operation. The SINCGARS coldstart operation is used for receiving or transmitting

SINCGARS hopsets and locksets so a user can be added to the net. There is no 30 second time-out

during option selections.

The SG LSET is used to enter the SINCGARS lockset for transmission or reception. Touching the

SG LSET touch option/display border highlights the option and the last lockset is displayed in the

scratchpad. The lockset may be changed by touching the desired number on the keypad options (1 thru

8), verifying the new lockset in the scratchpad, and touching SG LSET option. With the desired lockset

displayed in the scratchpad, the lockset is transmitted or received by touching the XMIT or RCV

option. Touching the XMIT option transmits the new radio lockset and the option is border

highlighted for 2 seconds. Touching the RCV option enables the radio to receive the lockset and the

option remains border highlighted until the lockset is received.

Touching the SG HSET touch option/display border highlights the option and the last hopset is

displayed in the scratchpad. The hopset may be changed by touching the desired number on the

keypad options (1 thru 20), verifying the new hopset in the scratchpad, and touching SG HSET option.

With the desired hopset displayed in the scratchpad, the hopset is transmitted or received by touching

the XMIT or RCV option. Touching the XMIT option transmits the new radio hopset and the option

is border highlighted for 2 seconds. Touching the RCV option enables the radio to receive the hopset

and the option remains border highlighted until the hopset is received. The XMIT and RCV options

can not be selected at the same time.

Figure 23-17. Guard Transmit on Top Level CNI Format

Selecting the RTN option returns the AJ SINCGARS ERF format to the AJ SINCGARS menu

sublevel. Selecting the RTN option again returns the AJ SINCGARS menu sublevel to the COMM

sublevel that is in the SINCGARS AJ mode.

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Figure 23-18. Guard Transmit on COMM Sublevel

23.5.2

Guard Transmit on Top Level CNI Format. On the top level CNI format, placing the COMM

G XMT switch on the ACI panel to 1 or 2 selects guard transmit for that radio and GXMT replaces

the COMM touch option/display (see figure 23-17). The COMM sublevel also displays GXMT in the

scratchpad (see figure 23-18).

23.6 KY-58 - SECURE SPEECH SYSTEM

The secure speech system is used for ciphering (coding) or deciphering (decoding) audio routed

through the COMM 1 and COMM 2 receiver-transmitters. The system consists primarily of the KY-58

control panel assembly on the right console. Controls and indicators are on the KY-58 control panel

assembly and on the COMM control panel on the left console.

23.6.1 KY-58 Control Panel Assembly. The control panel assembly functions as a ciphering or

deciphering device for secure speech operation.

23.6.1.1 Ciphered Transmission. During ciphered transmissions, audio from the microphone is

routed through the COMM control panel to the KY-58 control panel assembly where it is enciphered.

The enciphered audio is routed back to the COMM control panel, then to COMM 1 or COMM 2

receiver-transmitter for transmission.

23.6.1.2 Ciphered Reception. During reception of ciphered information, the ciphered audio is

routed from the COMM 1 or COMM 2 receiver-transmitter to the COMM control panel, then to the

control panel assembly for deciphering. Deciphered audio is routed to the COMM control panel and

the headset.

23.6.1.3 Ciphered Relay Mode. During ciphered relay mode of operation, ciphered information

received on one radio is routed from the radio, through the COMM control panel to the second radio

for transmission. Ciphered information received on the first radio is also routed through the COMM

control panel to the KY-58 control panel assembly for deciphering. Deciphered audio is routed through

the COMM control panel to the headset. This enables the crewmember to hear deciphered relayed

audio in the ciphered relay mode. When cipher is selected on the COMM control panel immediately

VII-23-24

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Figure 23-19. KY-58 Control Panel Assembly

after operating in relay plain, COMM 1 plain, or COMM 2 plain mode of operation, the crewmember

must press the transmit key for either COMM 1 or COMM 2 two times to enable ciphered relay

operations. When the relay aircraft is operating both radios within the same bandwidth, the two

frequency selections must be separated by a minimum of 10 MHz.

23.6.2 KY-58 Controls and Indicators. The only cipher control on the COMM control panel is the

RLY CIPHER/PLAIN switch (relay switch). The controls on the KY-58 control panel assembly are the

MODE select knob, unlabeled fill select knob, VOLUME control knob, and the unlabeled power select

knob (see figure 23-19).

23.6.2.1 KY-58 Mode Select Knob. The mode select knob has positions of P, C, LD, and RV. Placing

the knob to P enables plain mode of operation. Placing the knob to C enables the cipher mode of

operation. With the knob set to LD the load mode of operation is enabled. This mode is used for

loading data into the KY-58 control panel assembly. Information pertaining to the RV knob position

(receiver variable) will be supplied later.

23.6.2.2 KY-58 Fill Select Knob. The fill select knob has positions of 1 thru 6, a Z 1-5 position, and

a Z ALL position. Setting the knob to one of the six positions selects the position to be loaded with

data. Placing the knob to Z 1-5 zeroizes data in positions 1 thru 5. Placing the knob to Z ALL zeroizes

all data in positions 1 thru 6.

23.6.2.3 KY-58 Volume Control Knob. The volume control knob adjusts the volume of the KY-58

control panel assembly audio. The volume control knob should be set to full volume position during

secure voice transmission and reception.

23.6.2.4 KY-58 Power Knob. This knob has positions of ON, OFF, and TD. Placing the knob to ON

turns on power to the KY-58 control panel assembly if cipher mode has been selected. Placing the knob

to OFF removes power to the system. With the knob in TD, power is turned on for the system if cipher

mode has been selected and a time delay is selected for data processing. The knob must be in the TD

position for ciphered relay operations.

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Figure 23-21. DCS KEY Display

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Figure 23-23. MUMI Displays

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Figure 23-24. BIT Displays

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Figure 23-25. IFF Transponder UFCD Sublevel

23.8.1.2 IFF Transponder UFCD Sublevel. The IFF Transponder (XPOND) UFCD sublevel is

displayed by selecting the IFF option before entering any data in the scratchpad (figure 23−25). This

sublevel is used to control power to the IFF system, to enable the transponder modes, to set Mode 1,

2, and 3 codes, to select Mode 4A or 4B, to view Mode S status, to set the temporary Mode S address,

and to select the Mode S sublevel. (See 23.8.1.2.1 for Mode S operation.)

The IFF is on when the ON/OFF option is corner highlighted and displays ON. The IFF system is

off when the option is not corner highlighted and displays OFF.

The Mode 1, 2, 3/C, 4A/4B options are border highlighted when selected for enable. A mode option

without a border highlighted is not selected for enable. Modes 1, 2, 3 and C may be selected for enable

or disable when the IFF system is either on or off. The IFF must be on to select Modes 4A or 4B. Any

mode that is border highlighted with the IFF system on is immediately enabled; any mode that is

border highlighted with the IFF system off is automatically enabled when the IFF system is turned on.

Modes 1 and 2 are enabled and disabled by selecting the respective option. When neither Mode 3 nor

Mode C is enabled, selecting the Mode 3/C option results in the following sequence: both Mode 3 and

Mode C enabled − Mode 3 enabled and Mode C disabled − both Mode 3 and Mode C disabled (figure

23−26). The altitude encoding mode uses 29.92 inches Hg as a reference. When the KIV−6 is installed

and the IFF is on, Mode 4A or Mode 4B can be enabled. Selecting the Mode 4A option results in the

following sequence: Mode 4A enabled − Mode 4A disabled and legend changes to 4B − Mode 4B

enabled − Mode 4B disabled and legend changes to 4A. If the KIV−6 is not installed or the IFF is off,

the Mode 4A/4B option is not displayed.

The Mode 1 code may be changed by selecting two valid numbers (first digit equal to 0−7, second

digit equal to 0−3) and selecting the Mode 1 option. The Mode 2 and 3 codes may be changed by

selecting four valid numbers (each digit equal to 0−7) and selecting the respective Mode option.

23.8.1.2.1 Mode S Mode S is a Civil Air Traffic Control Surveillance System that can respond to

selective interrogations and provide air−to−air and air−to−ground data of aircraft ID, state, and intent

information. The carriage and operation of Mode S Elementary Surveillance functionality applies to

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Figure 23-26. Mode 3 and Mode C Selection

aircraft that fly Instrument Flight Rules (IFR) and Visual Flight Rules (VFR) flights in Mode S

designated airspace.

The integration of Mode S Level 2 into Navy aircraft is divided into two surveillance levels,

Elementary (EL) and Enhanced (EN). It is beneficial to air traffic control to incorporate Enhanced

Surveillance to the extent practical on all Navy aircraft and to populate Enhanced Surveillance data

parameters to the extent permitted by existing aircraft sensors. As a result of the requirements,

Elementary Mode S is incorporated via a software modification to the CIT system. The system

provides most of the functionality of Enhanced Mode S, but for flight planning purposes only

Elementary Mode S is supported.

When Elementary Surveillance is selected, the aircraft transmits the following data:

1. 24 bit aircraft address

2. Secondary Surveillance Radar (SSR) Mode 3/A

3. Aircraft Identification (call sign used in flight)

4. Transponder Capability Report

5. Altitude reporting in 100 ft intervals

6. Flight Status (airborne/on ground)

When Enhanced Surveillance is selected, the aircraft transmits the following data:

1. Elementary Surveillance data

2. Magnetic Heading

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Figure 23-27. Electronic Boresight Constant (EBC) Display with W on W

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Figure 23-28. XPOND Format Selection to Enable Mode S Enhanced and Squitter

1. Mode S Option on Transponder UFCD Sublevel. With the IFF system on, the Mode S

option on the UFCD Transponder (XPOND) sublevel indicates the current status of the Mode S

transponder (figure 23−28). The first line of the Mode S option indicates the selected Mode S

surveillance and acquisition squitter options. Enhanced surveillance is indicated by

″EN″ and

Elementary surveillance by ″EL″. An ″S″ after the slash indicates the squitter is enabled (e.g., S−EN/S)

and a dash indicates the squitter is disabled (e.g., S−EN/−) (figure 23−29). The second and third lines

indicate the temporary Mode S address. When a mission planning input is available, those Mode S

surveillance and acquisition squitter options and the temporary address are displayed. Otherwise, the

system defaults to Enhanced surveillance and squitter enabled (S−EN/S). Regardless of the Mode S

options selected, Mode S is disabled at power up.

The first selection of the Mode S option boxes the option and enables the displayed Mode S

functions. The second selection of the Mode S option displays the Mode S UFCD sublevel (figure

23−30).

If neither the permanent nor temporary Mode S address is available, Mode S is disabled, the Mode

S option is Xd out, and the first line displays ″S−″. If no temporary address has been provided by

mission planning or aircrew entry, all zeroes (00000000) are displayed (figure 23−31). A new temporary

address can be entered by selecting eight valid numbers (all digits equal to 0−7 and can not contain all

7’s or all 0’s) and selecting the Mode S option.

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Figure 23-29. Return to XPOND Format with Squitter Disabled

2. Mode S UFCD Sublevel. The Mode S sublevel is used to enable/disable the acquisition

squitter, select Enhanced or Elementary surveillance, and enter the aircraft call sign and temporary

address (figure 23−30). If the aircrew changes Mode S selections and disables Mode S, the aircrew’s

selections return when Mode S is re-enabled.

a. Temporary Mode S Address. The temporary Mode S address is displayed on the TEMP S option.

The temporary address can be provided via mission planning or aircrew entry. If a temporary address

is not available, all zeros (00000000) are displayed. A new temporary address can be entered by

selecting eight valid numbers (all digits equal to 0−7 and can not contain all 7’s or all 0’s) and selecting

the TEMP S option.

b. Mode S Surveillance Level. The Mode S Enhanced (S−EN) and Elementary (S−EL) Surveillance

level options are mutually exclusive. Selection of either option enables that option and disables the

other option. If neither option is enabled, enabling one option also enables the acquisition squitter (S

ACQ SQUIT). If both options are disabled, Mode S and the acquisition squitter are disabled.

c. Mode S Acquisition Squitter. Selecting the Mode S acquisition squitter (S ACQ SQUIT) option

toggles the squitter between enabled and disabled. When the squitter is disabled by selecting the

option, it remains disabled until enabled again by aircrew. The squitter is also disabled when Mode S

is not selected (S−EN and S−EL are deselected at the same time). Whether the squitter was disabled

by the S ACQ SQUIT option or S−EN and S−EL deselect, selecting S ACQ SQUIT enables S ACQ

SQUIT and the previous Mode S surveillance level (S−EN or S−EL). Squitter status is also displayed

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Figure 23-30. Mode S UFCD Sublevel

on the XPOND sublevel Mode S option. An ″S″ after the slash indicates enabled (e.g., S−EN/S) and

a dash indicates disabled (e.g., S−EN/−) (figure 23−29). The SQTTR advisory is also displayed

anytime Mode S is enabled while the acquisition squitter is disabled. The SQTTR advisory is cleared

when either Mode S is disabled or the acquisition squitter is enabled.

Keep Mode S acquisition squitter enabled (boxed) when Mode S is

enabled. Disabling Mode S acquisition squitter with Mode S enabled does

not allow TCAS in nearby aircraft to acquire track.

d. Mode S Aircraft Call Sign. The Mode S aircraft (A/C) call sign is displayed on the CALL SN

option. If the A/C call sign has not been made available from the aircrew or mission planning, the

default A/C call sign is VV plus the BuNo (e.g.,VV166855). The A/C call sign may be changed by

selecting the CALL SN option which displays the A/C call sign UFCD sublevel and alphanumeric

keypad (figure 23−32). Valid A/C call signs are limited to no more than eight letters and numbers.

Leading or embedded spaces between characters in the A/C call sign are not accepted. Selecting the

CALL SN option after entering the new A/C call sign changes the call sign.

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Figure 23-31. Mode S Address Not Available on XPOND Sublevel

Figure 23-32. Mode S A/C Call Sign Sublevel

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Figure 23-33. IFF PROG EDIT Sublevel - POS Data

the Zulu time for the currently selected data line as well as input the exact code to be used in the

selected mode. The mode code is selected by entering a valid code and selecting the UFCD CODE

option. The selected mode code is displayed in the appropriate mode column on the IFF PROG page

and in the CODE option. If no mode code has been selected, the column on the IFF PROG page is

blank and the CODE option displays zeros. Time is selected by entering a valid four digit Zulu time and

selecting the UFCD TIME option. The selected time is displayed in the TIME column on the IFF

PROG page and in the TIME option. The selection arrows on the UFCD allow the aircrew to scroll

sequentially through the times entered on the IFF PROG page.

When a new time is entered, the TIME data lines are sorted in increasing time order based on

current aircraft time. The earliest later time is displayed first, followed by the remaining times in

sequential order. The selection box is moved automatically when the data line is edited. Times that are

earlier than the current aircraft time are assumed to be specified for the next Zulu day. When a TIME

data line is CLEAR’ed, the data lines are re−sorted, moving the data selection box and the newly

cleared data line to the bottom of the display.

A TIME data line is considered invalid if it contains valid code entries but does not contain a valid

time. Invalid data lines are displayed at the bottom of the display and are not used by the IFF.

When INTVL is selected, a UFCD format is displayed which allows aircrew to enter a start time and

single time interval for changing the IFF codes automatically. Start time is selected by entering a valid

four digit Zulu time and selecting the UFCD START TIME option. The selected start time is displayed

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Figure 23-34. Communication-Identification Data Entry

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Figure 24-1. Navigation Controls and Indicators (Sheet 1 of 2)

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Figure 24-1. Navigation Controls and Indicators (Sheet 2 of 2)

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Figure 24-2. TAMMAC Mode Selections

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Figure 24-3. GPS Page

satellites. OK is displayed next to the QUAL number when a satisfactory alignment is achieved and the

INS can be switched to IFA (POS/AINS) or NAV (POS/INS). When IFA (POS/AINS) or NAV

(POS/INS) is selected, the alignment data is removed from the HSI. Also during the alignment, TIME

increments. TIME will stop incrementing and flash when the INS suspends alignment due to

premature parking brake release (GND or CV), GPS data unavailable (IFA), ship INS (SINS) data

unavailable (CV), motion detected (GND), POS ERROR caution set, or waiting for carrier data entry

or carrier heading and/or carrier velocity changes during CV Manual alignment.

24.2.3.1 CV Alignment Modes. Selecting CV provides CV alignment options of RF (radio fre-

quency), CBL (cable), and MAN (manual). With the RF or CBL alignment option selected, the aircraft

is data linked to the ship’s INS (SINS). The MAN option has no data link capability and alignment

data must be entered manually. Before selecting CV, WYPT 0, ZTOD and DATE should be entered

and the parking brake set. When CV is selected, the alignment data is displayed on the HSI page

(figure 24−4) and the UFCD displays the OPER option and the operate (alignment) frequency in the

UFCD scratchpad.

The parking brake must remain set until a satisfactory alignment is achieved (OK displayed). If the

parking brake is released before OK is displayed and the QUAL number is greater than 5, the INS

switches to GYRO mode (AHRS attitude only). If the parking brake is released with the QUAL number

less than 5, the INS switches to POS/INS mode with limited performance. A complete re−initialization

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Figure 24-4. INS CV Alignment

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Figure 24-5. INS Ground Alignment

VII-24-16

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