Ch. 108 Field Comms Fundamentals

Question 1

Define Single Channel?

Answer 1

-Radio transmission communicates on 1 frequency

Question 2

Define Frequency Hopping?

Answer 2

-Helps reduce/eliminates threat of jamming and direction finding equipment

Question 3

Ranges for transmission?

Answer 3

• LO (low power) 200m-400m
• M (medium power) 400m-5KM
• HI (high power) 5KM-10KM
• PA (power amplifier) vehicles only 10KM-40KM

Question 4

Factors that affect radio transmission are?

Answer 4

• Location,sighting,weather, surrounding noise, enemy jamming, and mutual inference conditions
• use OE-254 to increase ranges data and voice

Question 5

Steps to load single channel frequencies?

Answer 5

• Obtain operating frequency (SOI or NCS)
• Set FCTN to LD
• SET mode SC
• SET CHAN to MAN, CUE or desired channel 1-6
• Press FREQ (00000) will show or current FREQ
• Press CLR
• Enter FREQ (7) seconds to enter use and CLR to delete last # enter
• Press STO
• Repeat 1-8 to add more FREQ
• Set FCTN to SQ ON

Question 6

4 methods to tie down an antenna?

Answer 6

-Stay down clamp/clip and snap free clamp/clip

Question 7

What does FITCAL stand for ?

Answer 7

• Feel
• Inspect
• Tighten
• Clean
• Adjust
• Lubricate

Question 8

3 Types of Batteries?

Answer 8

• BA5372 (non-rechargeable)
• BA550 (non-rechargeable lithium)
• BA590 (rechargeable battery man pack)

Question 9

How do you perform an operation check?

Answer 9

-Inventory and check accessories

Question 10

Define SINCGARS?

Answer 10

-Single Channel Ground and Airborne Radio System