Comm System

Question 1

How many preset channels are allowed on the UHF backup control unit?

Answer 1

20

Question 2

Where is the UHF backup control unit located?

Answer 2

Center console in the front cockpit only

Question 3

What are the two interphone modes?

Answer 3

HOT and COLD

Question 4

When in HOT mode, both microphones are what?

Answer 4

Active

Question 5

Where is the ground interphone headset jack located?

Answer 5

On the left fuselage, below the avionics bay

Question 6

How do you adjust VHF radio volume?

Answer 6

Rotate the VHF knob on the audio control panel

Question 7

True or false: The audio control panel is located in the front cockpit only

Answer 7

False

Question 8

What effect will moving the bypass switch to the ALTN position have on the UHF radio?

Answer 8

The audio will be unamplified, raw audio

Question 9

What are the buttons on the left side of the RMU?

Answer 9

Field select buttons

Question 10

What will you see when a field select key has been pressed?

Answer 10

A rectangular cursor will appear in the field

Question 11

What are transfer switches on the RMU labeled with?

Answer 11

White diamond

Question 12

Pulling out the small tuning knob will allow you to change UHF frequency in what increments?

Answer 12

25 kHz

Question 13

What indication is given when the RMU is on the preflight test page?

Answer 13

PFT is shown in the top field

Question 14

True or false: If the RMU passes the preflight it will display the preflight test page for 5 seconds, then return to the normal operating page

Answer 14

True

Question 15

UHF radio information is displayed in what field on the RMU display?

Answer 15

First

Question 16

How do you toggle between active and standby frequencies on the UHF radio?

Answer 16

Press the transfer switch adjacent to the UHF field

Question 17

Pressing the MEM special function key will do what?

Answer 17

Display the last used memory channel in the standby frequency

Question 18

What indication is shown on the RMU display when the UHF Guard is turned on?

Answer 18

The word Guard

Question 19

How many VHF NAV presets can be stored in the RMU?

Answer 19

10

Question 20

What does the DMEH button do?

Answer 20

Holds the current DME information while allowing use of another nav facility

Question 21

With the transponder mode set to STBY, what information is being transmitted?

Answer 21

None

Question 22

How many transponder codes can the RMU store in addition to the active code?

Answer 22

One

Question 23

True or false: The VHF transceiver has a separate radio for monitoring VHF Guard

Answer 23

False

Question 24

What is the UHF Guard frequency?

Answer 24

243.00

Question 25

The UHF backup control unit is activated by what?

Answer 25

Turning the OFF/PUSH TEST knob clockwise

Question 26

VHF NAV volume control is provided through what?

Answer 26

The NAV knob on the audio control panel

Question 27

The ground crew interphone is activated by what?

Answer 27

When the battery switch in either cockpit is switched on

Question 28

If the RMU does not pass the preflight test, you may override the system by doing what?

Answer 28

Pressing the key next to ACCEPT

Question 29

What will the UHF radio do when in BOTH mode?

Answer 29

Monitor Guard and the active frequency and transmit on the active frequency

Question 30

How is UHF radio direct tuning accomplished?

Answer 30

Holding down the appropriate transfer key for at least 3 seconds, then dialing in the new frequency

Question 31

The RMU allows storage of up to how many UHF or VHF communication frequencies in memory channels?

Answer 31

20

Question 32

What do you do to access the RMU special functions page for selected systems?

Answer 32

Press the PAGE special functions key

Question 33

What is the RMU preflight test initiated by?

Answer 33

Applying power to the RMU

Question 34

What indication do you see when squelch is turned off?

Answer 34

The letters "SQ" are displayed

Question 35

What indication will you get on the RMU if the backup UHF radio control unit is in operation?

Answer 35

The word "REMOTE" will be displayed

Question 36

What is the main operational difference between the UHF radio and VHF radio?

Answer 36

The VHF radio doesn't monitor Guard frequency; you must dial it up manually

Question 37

With the transponder set to ALT, what information is being transmitted

Answer 37

Aircraft altitude and transponder code