RADIOCOMMUNICATIONS AND AMATEUR RADIO APPARATUS, TRANSMITTERS, CIRCUITS, RADIO RECEIVERS, AERIAL SYSTEMS (RADIO ENGINEERING)

AERIALS FOR VEHICLES, WATERCRAFTS, AIRCRAFTS (RADIO ENGINEERING)

AERIAL SYSTEMS + ANTENNA SYSTEMS (RADIO ENGINEERING)

ASYMMETRIC AERIALS + ASYMMETRIC ANTENNAS (RADIO ENGINEERING)

DIRECTIONAL AERIALS + DIRECTIONAL ANTENNAS (RADIO ENGINEERING)

SMART AERIALS + SMART ANTENNAS (RADIO ENGINEERING)

SPIRAL AERIALS + SPIRAL ANTENNAS (RADIO ENGINEERING)

BALANCED AERIALS + BALANCED ANTENNAS (RADIO ENGINEERING)

RADAR DOMES, RADAR AERIALS ENCLOSURES (RADAR ENGINEERING)