So, when WPSX took the plunge into SFNs, it opted for option two, distributed transmission.

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If State College, Pennsylvania?s WPSX is a harbinger of things to come, the answer to your woes just might be Single-Frequency networks (SFNs).

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More commonly discussed within the context of Europe?s COFDM, SFNs are beginning to show signs that they might just work with America?s 8-VSB modulation scheme also.

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Unlike the repeater towers that are sometimes used in western states (AKA translators), SFNs aren?t simply receiving the signal, error-correcting, and retransmitting on a different frequency.

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The same effect occurs within SFNs.

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So what are SFNs?

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