ES&T019

1. LOS stands for:

Loss of Skip

Loss of Signal

Line of Sight

Line of Signal

2. Another term for a single microwave link is a:

Section

Hop

Skip

Jump

3. The microwave signal path should clear obstacles by at least:

60% of the Faraday zone

60% of the Fresnel zone

60% of the height of the antenna tower

60% of the highest obstacle height

4. Repeaters are used in a microwave system:

Backup

When distance exceeds line-of-sight

Regenerative type

Increase power

5. Microwave repeaters can be:

IF type

Baseband type

Regenerative type

All of the above

6. Fading is caused by:

Multipath reception

Attenuation due to weather

Ducting

All of the above

7. The typical reliability of a microwave system is:

90%

99%

99.9%

99.99%

8. Microwave systems use:

FM

SSB

QAM

All of the above

9. Satisfactory performance of an analog microwave system is defined as:

A carrier-to-noise ratio that exceeds a given value

An ERP level that exceeds a given value

An energy-per-hertz level that exceeds a given value

None of the above

10. The effects of fading due to multipath reception are often reduced using:

Diversity

Power

High-gain antennas

Frequency selector

11. A typical microwave system uses a transmitted power of about:

2 watts

20 watts

200 watts

10 watts

12. Too much antenna gain causes:

A very narrow microwave beam

A very wide microwave beam

Excessive noise

High power consume

13. LMDS stands for:

Local Microwave Distribution System

Local Multipoint Distribution System

Local Multichannel Distribution System

14. Satisfactory performance of a digital microwave system requires a:

Low level of transmitted power

High level of ERP

Good energy per bit per transmitted Watt ratio

Good energy per bit per noise density ratio

15. LMDS is:

Bidirectional

Unidirectional

Multidirectional

Omnidirectional

16. In digital microwave systems, additional repeaters increase the

Reliability

Noise level

Jitter

Power

17. MMDS stands for:

Multichannel Microwave Distribution System

Multipoint Microwave Distribution System

Multichannel Multipoint Distribution System

Multiple Microwave Distribution Systems

18. In analog microwave systems, additional repeaters increase the:

Reliability

Noise level

Jitter

Power

19. An advantage of digital techniques over analog in a microwave system is:

Less bandwidth is required

Accumulation of noise is reduced

It requires less power

All of the above

Es&t019

1. LOS stands for:

2.

What first name or nickname would you like us to use?

2. Another term for a single microwave link is a:

3. The microwave signal path should clear obstacles by at least:

4. Repeaters are used in a microwave system:

5. Microwave repeaters can be:

6. Fading is caused by:

7. The typical reliability of a microwave system is:

8. Microwave systems use:

9. Satisfactory performance of an analog microwave system is defined as:

10. The effects of fading due to multipath reception are often reduced using:

11. A typical microwave system uses a transmitted power of about:

12. Too much antenna gain causes:

13. LMDS stands for:

14. Satisfactory performance of a digital microwave system requires a:

15. LMDS is:

16. In digital microwave systems, additional repeaters increase the

17. MMDS stands for:

18. In analog microwave systems, additional repeaters increase the:

19. An advantage of digital techniques over analog in a microwave system is: