The circuit is intended to produce a simple antenna that has the capability to be tuned at medium wave frequency which complements the antenna of a radio receiver, without having to use any external ...

A so-called random wire antenna is an end fed antenna. One end goes straight into the rig, often with no feedline, and the other end in the air attached to something as high as you can find, as ...

The need for what’s called antenna tuning—either by adjusting the antenna itself or via a matching circuit between power-amplifier output and the antenna—is almost as old as wireless itself. Even in ...