Provided are method and apparatus for transmittingreceiving broadcasting content. Opposing tapered slot lines may terminate in bulbous ends and may be characterized by an impedance profile such as an exponential or a Klopfenstein impedance profile. Anti-transfer material in the anti-transfer layer migrates to the interior surface of the package and interacts with the visually-obscuring component of the contained food product, thereby to attenuate or eliminate the visually obscuring effect of such component.