APX-72 IFF

Question 0

How many codes for mode 1?

Answer 0

32

Question 1

Five modes of IFF:

Answer 1

1-military
2-military
3A-civilian
C-altitude reporting
4-secure IFF

Question 2

How many codes for mode 2?

Answer 2

4,096

Question 3

When does the IFF caution light illuminate?

Answer 3

• Mode 4 is inoperative
• 3-6 seconds each time transponder is powered on
• Mode 4 codes have zeroized
• KIT-1C self test fails
• Transponder is not replying to mode 4

Question 4

What are the transmit and receive frequencies?

Answer 4

Transmit=1090 MHz

Receive= 1030 MHz

Question 5

What is the function of the MIC position of the IDENT/MIC switch?

Answer 5

Enables identification of position reply for 30 seconds each time microphone is keyed for UHF or VHF

Question 6

Which barometric altimeter does IFF use for altitude reporting?

Answer 6

Pilot

Question 7

Circuit breaker for IFF test set.

Answer 7

FLC upper

K16

Question 8

Circuit breakers for KIT-1C.

Answer 8

FLC upper
K15

FLC lower
Transponder PWR IFF

Question 9

Circuit breaker for Transponder.

Answer 9

FLC upper
K15

FLC lower
Transponder PWR IFF