What Does Feed Line Mean?
A feed line is a cable that feeds radio signals from a radio antenna to a transmitter or receiver. It connects the antenna to the receiver, transmitter or transceiver and is widely used in wireless communications and broadcasting antenna systems. It transfers the radio frequency energy between the antenna and the receiver. When operated properly, it does not radiate any energy.
Techopedia Explains Feed Line
Feed lines are specialized cables that connect an antenna to a transmitter or receiver of a radio or wireless communication system.