Homemade low power TV transmitter?

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I suppose you could use a digital receiver STB with a channel 3 RF output jack to feed the translator input (assuming the translator input can be set to channel 3) to create an analog translated output.

They would have to modify the translator to make it a full transmitter by adding the exciter (the modulator if you will), thus making it no longer a translator. Like someone said earlier, the modulator from a stb would be double sideband, and would therefore not meet FCC technical requirements on the air.

Broadcasters are always trying to one-up one another. So if some broadcaster in a given area runs digital, they all will, or if they do what they did near my dad's place, a number of SD stations went in and put up one digital transmitter and each runs on a sub channel.