he upcoming launch of the new digital television technology ATSC 3.0 brought about the reintroduction of single-frequency networks or SFN networks.

Apparently, this technology of single-frequency networks has been around since the 1920s, when it was first implemented. It initially consisted of closely situated radio stations that shared a single frequency.  During the 1950s and in the years thereafter, the operation extended to the TV industry.

The so-called “boosters” transmitted off-the-air TV stations to smaller areas, communities, and even individuals that were beyond the main signal’s reach.

These tools were located on the ridges, with the receiving antenna geared toward the preferred station. An amplifier fed the transmitting antenna that was turned toward the area without TV signals.

In today’s popular digital television industry, the SFN technology gained fame owing to its receivers’ capability of rejecting unwanted TV signals.

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