RF Equipment

Question 1

Describe RF

Answer 1

Frequencies used to transmit signals over a distance

Question 2

Describe IF

Answer 2

Frequencies used to standardize a transmission system

Question 3

What does a multiplexor do?

Answer 3

Combines baseband signals into a single data stream

Question 4

Modulator

Answer 4

Used to generate signals or modulate existing signals
* Adds FEC
*Digital to analog

Question 5

Demodulator

Answer 5

Used to strip away modulation and FEC to reveal data
*Analog to digital

Question 6

What is the VSG?

Answer 6

Sophisticated radio. No actual data is sent, modulates PRN over a carrier. No FEC.

Question 7

What is a continous waveform?

Answer 7

Non-modulated and simplest waveform.

Question 8

What is heterodyning?

Answer 8

The process of mixing 2 frequencies together to achieve a desired output.

Question 9

Describe an upconverter

Answer 9

Converts IF to RF. Adds active gain.

Question 10

Describe a HPA

Answer 10

Adds active gain to overcome FSL

Question 11

Describe LNA

Answer 11

Filters out-of-band noise. Combines with D/C to form LNB. Raises amplitude of received signals after FSL.