- Radio broadcasting and communications equipment (2)
- Amplifiers, RF power and IF (1)
- Cellular radio telephone (1)
- Radio receiver networks (2)
- Television closed circuit equipment (1)
- Television monitors (1)
- Antennas, transmitting and communications (2)
- Encryption devices (1)
- Radio and television switching equipment (1)
- Satellites, communications (4)
- Space satellite communications equipment (2)
- Studio equipment, radio and television broadcasting (1)
- Transmitting apparatus, radio or television (1)
- Global positioning systems (gps) equipment (2)
