Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

UHF C3 > UHF C3 > Flashcards

UHF C3 Flashcards

1
Q

What is the purpose of UHF C3?

A

It is a high-power, LOS airborne communications system with both voice and data capabilities

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the Frequency Modulation (FM) range for C3?

A

225.000MHz- 399.975MHz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where are the 5 UHF C3 antennas located?

A

Tx 1- Top of the fuselage, forward of MILSTAR antenna. (FS470)
Tx 2- Below Tx 1 bottom of fuselage (FS470)
Tx3- After of Tx 2 on bottom (FS570)
Receive(RCV) 4- Bottom of fuselage, at FS1150
RCV 5- Top of aircraft forward of VLF receive antenna. (Cross dipole antenna)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the nominal RF impedance for the C3 antennas?

A

50 ohms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The UHF C3 can provide RF power handling capability of up to _____ Watts?

A

1,500

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the function of the UHF C3 antennas?

A

To provide voice and data TX and RCV capabilities.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Where are the UHF CONTROL panels located?

A

P30 bay 1 and 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the power requirements for the UHF CONTROL panel?

A

28 VDC from CONT 1&2 C/B’s on 28 VDC DISTR 2 panel on P30

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the function of the UHF CONTROL panel?

A

To select and control individual RF, operating mode, and R/T output power.
**Either of the UHF CONTROL panels can control the 3 UHF C3 R/T’s.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How many preset frequencies and manual frequencies can the UHF CONTROL panel have?

A

20 preset.

7,000 manual

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The UHF AUX CONTROL panel is located in?

A

The P30 bay 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the power requirement for the UHF AUX CONTROL panel?

A

28 VDC from AUX CONT C/B from 28vdc DISTR 2 PNL on P30

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The function of the UHF AUX CONTROL panel is..

A

To provide primary input power, associated equipment selection, control and indications for the UHF C3 Radio subsystem…
Provide selection between UHF Control # 1 & 2
Provide squelch override

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The UHF C3 MODE SELECT panel is located in ..

A

P30 bay 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The function of the UHF C3 MODE SELECT panel is…

A

To provide the switching controls necessary to select which system will interface with the UHF C3 radios.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the power requirement for the UHF C3 MODE SELECT panel?

A

28 VDC MODE SEL C/B from 28 VDC DISTR 2 Panel on P30

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Where is the BCA (Baseband Control Assembly) located?

A

C2 cabinet above the UHF C3 HPAs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the function of the BCA?

A

It is the interface that links the transmit and receive baseband signals between the UHF C3 modems and their designated DAISS MUX’s.

19
Q

Where is the UHF C3 Power Meter located?

A

Control panel- P30 console above the MCS Display

Three power sensors- C2 cabinet

20
Q

What is the function of the UHF C3 power meter?

A

To allow for individual selection of forward power(F) or reflected power (R) for the UHF C3 -1, -2, and -3 radios

21
Q

How many Watts of power for the measurement of F (Forward)?

How many for R (Reflective)

A

2,500 Watts

500 Watts

22
Q

The UHF C3 R/T’s are located in…

A

C2 Cabinet

23
Q

The power requirements for the UHF C3 R/T’s are…

A

115 VAC 400Hz R/T 1,2, or 3 C/B on E60-2

24
Q

What is the function of the C3 R/T’s?

A

To translate the received RF signal to a 70 MHz Intermediate Frequency (IF) and send it to the UHF C3 Modem for demodulation

25
Q

The 70 MHz Select Switch is located in

A

The C2 cabinet

26
Q

The 70 MHz Select Switch power requirements are ..

A

28VDC MODE SEL C/B from 28 VDC DISTR 2 Panel on P30

27
Q

The function of the 70 MHz Select Switch is..

A

To interface the UHF C3 Radio Subsystem with the ALCS subsystem and operate IN RESPONSE to the UHF C3 MODE SELECT panel.

28
Q

The UHF C3 HPAs are located in the…

A

C2 cabinet

29
Q

The UHF C3 HPAs power requirement are..

A

115VAC 400Hz HPA 1,2, or 3 C/B from E60-2 panel

30
Q

The function of the UHF C3 HPA’s are…

A

To deliver 1 KW over a 225.000 to 399.975MHz range into a 50 Ohm load.
And provide amplification of the R/T Tx signal to supply 250 Watts (AM) or 1,000 Watts (FM) of RF power to an associated C3 TX antenna

31
Q

The UHF C3 MODEM’s are located..

A

In the C2 Cabinet

32
Q

The UHF C3 Modem’s power requirement are..

A

115 VAC 400Hz MODEM 1,2, or 3 C/B’s on E60-2

28 VDC MODEM 1,2, or 3 C/B’s on E60-2

33
Q

The function of the UHF C3 Modems are…

A

To interface with the UHF CONTROL panels and the UHF C3 MODEMS provide radio power ON/OFF, tuning, R/T enable, self-test, fault detection, and mode of operation

34
Q

The UHF C3 Multicoupler/Receive Bandpass filters are located in

A

Aft P20 bay 1

35
Q

The power requirements for the C3 Multicoupler/Receive Bandpass filters are..

A

28VDC RCVR FLTR 1,2, and 3 C/B’s from 28 VDC DISTR 1A on P20

36
Q

The function of the C3 Multicoupler/Receive Bandpass filter is..

A

To act as a fixed-tuned filter network that permits simultaneous transmission of two signals, one wideband and one narrowband, on a single antenna.

37
Q

The UHF C3 Multicoupler consists of two Bandpass Filters, one with a _____ to _____ MHz Bandpass for wideband signals and the other with a ____ to_____ MHz Bandpass for narrowband signals.

A
  1. 8 to 298 MHz for wideband

314. 9 to 400 MHz for narrowband

38
Q

The UHF C3 Transmit Bandpass Filters are located in..

A

C2 cabinet

39
Q

What are the power requirements for the UHF C3 Transmit Bandpass Filters?

A

28 VDC XMTR FLTR 1,2, or 3 C/B on E60-2

40
Q

The function of the Transmit Bandpass Filters are to..

A

Take the 225.000 to 399.975 MHz transmit RF from the R/T’s and route it to the UHF C3 HPA’s for amplification.

41
Q

The UHF Receive/Preamplifier is located in..

A

Aft P20 bay 2

42
Q

The power requirements for the UHF Receive/Preamplifier are

A

28VDC PRE AMP C/B from 28 VDC DISTR 1A panel

43
Q

What is the function of the UHF Receive/Preamplifier?

A

It amplifies the received RF signals from each of the Receive Bandpass Filter before routing them to the C3 R/Ts for the applicable system!

UHF C3 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions