The antenna is located nearly 1,000 feet atop a tower in Hellam Township. In essence, what occurs is the difference between the softest and the loudest parts of the audio content is greatly reduced. The result is a more consistent average level over the whole program content. By doing this the average audio level appears to be louder overall. Generally the producers of non-commercial programming prefer having a variety of audio levels.
Quiet moments can change to louder, heart-racing levels to enhance dramatic effects.
In a short 30 second commercial, there is no time for that luxury. It is also the belief of many commercial producers that a more consistent loud audio track is sure to win your attention about the product or service being advertised. But I watch FOX43 here in Tennessee, Illinois, etc. We're the one serving South Central Pennsylvania and parts of northern Maryland. We are not affiliated with any other FOX43 and have no way of contacting them.