a. Does a signal travel at a single frequency, or does it spread over a range of frequencies?

10a.) Signals in a transmission usually _________.

a. Travel at a single frequency

b. Spread over a range of frequencies

c. Spread over the entire frequency distribution

d. Spread over the entire service band

b. If the lowest frequency in a channel is 1.22 MHz  and the highest frequency is 1.25 MHz, what is the channel bandwidth? Give your answer in kHz.

10b.) A channel extends from 55 MHz to 60 MHz. Its bandwidth is _________.

a. 60 MHz 

b. 55 MHz 

c. 65 MHz 

d. None of the above

c. If you want to transmit seven times as fast, how much wider must the channel be?

10c.) If you want to transmit 7 times as fast in radio, you need to use _________.

a. Channels that are about 7 times as wide

b. Channels that are about 49 times as wide

c. Spread spectrum transmission

d. None of the above

d. Why is large channel bandwidth desirable?

10d.) To transmit very rapidly in RADIO, you need _________.

a. Single-frequency transmission

b. Single-mode transmission

c. Wide bandwidth

d. Narrow bandwidth

10d.) To transmit data very rapidly, you would want a _________channel.

a. Narrow band

b. Broad band

c. Single-frequency band

d. Single-mode

e. What do we call a system whose channels are wide?

10e.) Channels with wide bandwidths are called _________ channels.

a. Multi mode

b. Full-duplex

c. Broad band

d. Parallel

f. What other types of system do we call broadband?

10f.) The term “broad band” is commonly used for _________.

a. Wide radio bandwidths

b. High-speed transmission in general.

c. Both A and B

d. Neither A nor B