ALR-95 SEI

Question 0

What components comprise the center channel (Narrowband)?

Answer 0

DF Antenna
PEU
RF Tuner
PA-160

Question 1

What does SEI offer that ALR-66 ESM does not?

Answer 1

Automated wideband signal acquisition and threat warning.

Question 2

What does the center channel provide?

Answer 2

• CW threat detection in the C/D band
• freq. measurement for ambiguity resolution
• automatic fine DF
• manual ESM operation
• SEI data collection.

Question 3

What are the sensitivity levels for the wingtip

E-J band?

Answer 3

Full
Medium (full -12dB)
Low (full -25dB)

Question 4

What are the sensitivity levels in the wingtip C/D band?

Answer 4

Full

Low (full-30dB)

Question 5

Wingtip Channel (Wideband)

Answer 5

Primary signal detection

Detect pulse and CW (except for CW in C/D band)

Question 6

Wingtip power supply

Answer 6

Provides power to all C/D and E-J wingtip receivers.

Contains EMI AND RFI filters for both input and output.

Question 7

Spinning DF Antenna

Answer 7

C/D and E-J antennas mounted on a turntable

0. 5-18.0 GHz range:
1. 5 - 2.0= vertically polarized / 2.0 - 18.0= horizontally polarized

Question 8

PEU

Answer 8

Controls signals to spinning DF antenna
Powers PA-160
Receives heading data from INS

Question 9

PA-160

Answer 9

Sends signals to PEU and SP-160

Compensates for coaxial line loss and provides additional sensitivity while ensuring signal fidelity.

Question 10

Microwave Tuner

Answer 10

Converts RF to IF and routes to SP-160

Question 11

Band Reject Filter

Answer 11

E- band is filtered to reject radar altimeter.

Question 12

Major functions of the SP-160.

Answer 12

Automated wideband signal acquisition.
Threat warning.
Frequency measurement for ambiguous resolution.
C/D band CW threat detection.
SEI data collection capability.

Question 13

How many threat priority levels are there?

Answer 13

1-7 with 1 being most lethal or of special interest to the mission.

Question 14

How are level 1 and 2 emitters displayed?

Answer 14

In red with an accompanied audio tone.

Question 15

When does the antenna DF antenna heater turn on and off?

Answer 15

On: 32F
Off: 59F

Question 16

What does an RCC ratio of 1:256 mean in the configuration window?

Answer 16

Ethernet connection is broken and the only finish to replace SP-160.

Question 17

What determines which INS is to provide navigation information to the PEU?

Answer 17

NAV/COM HSI Heading Attitude (HDG/ATTD) switch selects either INS 1 or INS 2 True Heading input data to the Antenna Control (PEU).

Question 18

What provides navigation data for the SP-160?

Answer 18

INS 2 provides ARINC 575 NAV DATA directly to the RPD (SP-160).

Question 19

Ensure no more than ____ windows are open at any one time. More than ____ may cause a software crash.

Answer 19

Five