1         What are typical characteristics of VHF and UHF networks?

a)       They are most suitable for long-range communications

b)       They cannot work without repeater stations

c)       They allow the use of light and small portable transceivers

d)       Their range depends on the opography of the local terrain

2        Which of the following statements are false:

a)       Shortwave antennas are always smaller than VHF antennas

b)       VHF networks can only carry voice communications

c)       In private networks, the users usually have control over the infrastructure

d)       Shortwave radio links can cover inter-continental distances

3        Which of the following statements are correct:

a)       All stations of the maritime service can communicate with all stations of the aeronautical service.

b)       Amateur radio operators can assist in establishing emergency communication networks

c)       A local "wireless LAN" connection between PCs or laptops can replace a VHF network

d)       The local and national amateur radio organizations need to be included in all emergency telecommunication preparedness plans

4        Which services operate on both, VHF and shortwave frequencies and in both, voice and data modes?

a)       The maritime service

b)       The amateur radio service

c)       The aeronautical service

d)       All of the above