Which type of transmission uses the shortest waves?

GSM telephony
CB radio
VHF radio
satellite TV
The Ku band is the portion of the electromagnetic spectrum in the microwave range of frequencies from 12 to 18 gigahertz (GHz). Ku band is primarily used for satellite communications, most notably for fixed and broadcast services, and for specific applications such as NASA's Tracking Data Relay Satellite used for both space shuttle and International Space Station
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Answers by country

GSM telephony
CB radio
VHF radio
satellite TV
answers
flagGermany
0%
40%
10%
50%
10
flagIndia
17%
14%
19%
48%
47
flagthe United States
5%
31%
15%
47%
19
flagPoland
15%
35%
27%
21%
3891
flagthe United Kingdom
21%
42%
14%
21%
14
flagUnknown
20%
20%
40%
20%
10