AVS210

Question 1

Describe NATO Frequency Bands

Answer 1

Question 2

What frequency does military UHF begin?

Answer 2

225 MHz

Question 3

List radio frequencies and limiting factors for ARC 1.

Answer 3

Question 4

List radio frequencies and limiting factors for ARC 2.

Answer 4

Question 5

List radio frequencies and limiting factors for PRC 1 (EQ).

Answer 5

Question 6

List radio frequencies and limiting factors for PRC 2 (EQ).

Answer 6

Question 7

List radio frequencies and limiting factors for PRC 3 (EQ).

Answer 7

Question 8

List radio frequencies and limiting factors for PRC 4 (EQ).

Answer 8

Question 9

List radio frequencies and limiting factors for PR 1(EQ+).

Answer 9

Question 10

List radio frequencies and limiting factors for PR 2(EQ+).

Answer 10

Question 11

List radio frequencies and limiting factors for PR 3(EQ+).

Answer 11

Question 12

List radio frequencies and limiting factors for PR 4(EQ+).

Answer 12

Question 13

List radio frequencies and limiting factors for PR 5(EQ+).

Answer 13

Question 14

List radio frequencies and limiting factors for PR 6(EQ+).

Answer 14

Question 15

List radio frequencies ranges for the GPS antennas for L1/L2

Answer 15

Question 16

List radio frequencies and limiting factors for Vortex

Answer 16

VCN Frequency Limits
S-Band: 2.2-2.5GHz
C-Band: 4.4 - 4.95GHz & 5.25 - 5.85GHz

Triband #1 & #2: VTX RX

BMA-6-0 #1 & #2: VTX TX
VTX S-Band TX Limits VCN S-Band Capability of 2.5GHz.

Question 17

Iridium frequencies for L-band Iridium / L1

Answer 17

L-band Iridium: 1616 - 1626.5MHz

L-band L1: 1575±10MHz

Question 18

List the antenna positions of the U-28

Answer 18

Question 19

Describe the PR2 Energy Flow (SAT HI)

Answer 19

PR2 (SSDL) > Coaxial Relay #6 > Combiner #3 > HPA #2 > Coaxial Relay #3 > Batwing #2

Question 20

Describe the PR2 Energy Flow (LOS)

Answer 20

PR2 (SSDL) > Coaxial Relay #6 > LOS Amp #2 > Coaxial Relay #3 > Batwing #2

Question 21

Describe the PR2 Energy Flow (SAT LOW)

Answer 21

PR2 (SSDL) > Coaxial Relay #6 > Combiner #3 > HPA #2 > Coaxial Relay #3 > Batwing #2

Question 22

What are the frequency ranges of Ku?

Answer 22

TX: 14.0 - 14.5 GHz
RX: 11.55 - 12.75 GHz

Ku Band covers 12 - 18 GHz, split into multiple sections varying by region.

Question 23

What is the frequency range of Ka?

Answer 23

K-above (Ka)

TX: 29.5 - 31.0 GHz
RX: 19.7 - 21.2 GHz

Ka band covers 27 GHz to 40 GHz

Question 24

Describe the VTX #1 (C-Band) Energy Flow

Answer 24

1. Triband #1 / #2
2. Divider/Diplexer/LNA/S&C-Band Filters
3. VCN (Splits to:)
   
   1. Network Switch
   2. DIGI 4
   3. C-Band Amp
      
      1. Vortex Tx (C-Band)

See Slide 86

Question 25

Difference between SSDL(s) and PRC Radios?

Answer 25

SSDL(s) Limitations: 1. RF Filter restricting 108 - 137MHz 2. No Harris SA TX 3. No GPS TOD PRC(s) do not have these limitations.

Question 26

List the RF hazard distances for the U-28A.

Answer 26

Question 27

How to use GPS TOD for HAVEQUICK

Answer 27

1. Press [OPT], select HAVEQUICK OPTIONS, CONFIGURE HQ TOD 2. Select HQII:MWOD as WORD OF DAY TYPE 3. Select USE GPS TIME

Question 28

Send/Receive TOD for HaveQuick

Answer 28

1. Make sure you are on the proper frequency to send/receive a TOD 2. Select [INI]/[HOP] (INI for first MICKEY), Press [CALL], Select TOD RECEIVE or TOD TRANSMIT

Question 29

How would you TX/RX Have Quick in HOP?

Answer 29

Scroll to [INI], change to [HOP], Press Enter. TX/RX.

Question 30

Define WOD (HQ).

Answer 30

WOD (Word of the Day): Set of coded numbers that determine hop pattern an hop rate.

Question 31

Define Have Quick Net?

Answer 31

Net: Group of frequencies used for synchronized hopping.

Question 32

Define TOD (HQ).

Answer 32

TOD (Time of Day): "MICKEY", ensures frequency hopping and synchronization.

Question 33

What do individual number channels determine (CH20 – CH14) with regards to WOD?

Answer 33

CH20: Operating Mode and Hop Rate CH19: Conferencing Capability CH18-15: Hopping Pattern Parameters CH14: MWOD DOM (Master Word of Day, Date of Month)

Question 34

What is the purpose of OTAR?

Answer 34

Over The Air Rekey (OTAR): TX and RX COMSEC variables over VULOS net.

Question 35

Describe if Have Quick is a means of encryption

Answer 35

HQ itself is not secure, but it can be encrypted by other equipment to make them secure.

Question 36

What is Have Quick II?

Answer 36

Have Quick II is an operating mode of the UHF radio provides a jam resistant capability by automatically and continuously changing the frequency many times per second. (frequency agility)

Question 37

What frequencies do GPS broadcast L1/L2 on?

Answer 37

L1 - 1575.42 MHz L2 - 1227.60 MHz

Question 38

State the difference between INAV and ENAV.

Answer 38

- INAV is internal EU GPS data - ENAV is blended Tac INS/GPS solution

Question 39

Describe the two types of GPS signals.

Answer 39

- unencrypted: L1 on 1575.42 - encrypted: L1 on 1575.42 and L2 on 1227.60

Question 40

List SAASM capable receivers.

Answer 40

TA-24 PRC-117 1-4 H-Sys 1/2 MTS-EU