Which type of transmission uses the shortest waves?

GSM telephony
662
CB radio
1471
VHF radio
1107
satellite TV
1027
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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