(M)Element 3-82 Types of Transmissions

Question 1

What term describes a wide bandwidth communications system in which RF carrier frequency varies according to some predetermined sequence?

Answer 1

spread spectrum communication

Question 2

Name two types of spread spectrum systems used in most RF communications applications.

Answer 2

direct sequence and frequency hopping

Question 3

What is the term used to describe spread spectrum comms system where the center frequency of a conventional carrier is altered many times per second in accordance with a psuedo random list of channels?

Answer 3

frequency hopping

Question 4

A TDMA radio uses what to caryy the multiple conversations sequentially>

Answer 4

separate time slots

Question 5

Which of the following statements about SSB voice tranmission is correct?

Answer 5

they normally use J3R tranmissions

Question 6

What are thje two most used PC coding techniques used to separate different calls?

Answer 6

CDMA and GSM