general/antennas

Communication system used in mines and tunnels

Cable or conductor connecting a radio transmitter to an antenna

Lobes of far field radiation pattern of antenna

Surface on an antenna in electromagnetics

Changing the direction of the main lobe of a radiation pattern

Surface on an antenna in electromagnetics

Candle holder with multiple arms

Cable or conductor connecting a radio transmitter to an antenna

Communication system used in mines and tunnels

Communication system used in mines and tunnels

Surface on an antenna in electromagnetics

Formula in telecommunications engineering of antenna performance

Redundancy method to improve communications reliability

Cable or conductor connecting a radio transmitter to an antenna

Height based on large area surrounding object; often used in U.S. for antenna towers

Communication system used in mines and tunnels

Surface on an antenna in electromagnetics

Cable or conductor connecting a radio transmitter to an antenna

Communication system used in mines and tunnels

Surface on an antenna in electromagnetics

Cable or conductor connecting a radio transmitter to an antenna