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Subject
- Radio frequency allocation -- United States52
- United States. Federal Communications Commission6
- Microwave communication systems -- United States5
- Telecommunication -- United States5
- Television frequency allocation -- United States4
- Communication -- United States3
- Communications, Military3
- Mobile communication systems -- United States3
- Public safety radio service -- United States3
- Electronics in military engineering -- United States2
- Emergency communication systems -- United States2
- Government communication systems -- United States2
- Public-private sector cooperation -- United States2
- Radar -- United States2
- Telecommunication -- United States -- Technological innovations2
- Wireless communication systems -- United States2
- Amateur radio stations -- United States1
- Auctions -- United States1
- Broadband communication systems -- United States1
- Broadcasting -- Deregulation -- United States1