Talk:RF modulator

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[edit] Why can't 3 and 4 work together?

I have always wondered why if you try and use two RF modulators to encode channels 3 and 4 onto the same cable, they interfere with each other despite being discrete. Is it because the RF modulators are poor quality and they don't care about splattering channels for consumer grade devices since they figure only 1 channel will be used? Or is there some other reasonable technical explanation? Reswobslc 02:39, 8 November 2006 (UTC)

The RF modulator produces a tremendous amount of power next to the amount a tv would receive from an antenna, thus it overpowers the tv tuner on all channels. It is like walking into the bright sun from a dark room. Grock2 23:32, 18 December 2006 (UTC)

The tv channels needs to have a certain space between them in order to prevent them leaking into each other, it is a common issue that also exists in things like wireless networking --213.66.131.204 19:52, 19 April 2007 (UTC)

Yes, but isn't that built into the TV channel frequency allocation scheme? — Gwalla | Talk 20:46, 20 September 2007 (UTC)

True, and RF modulators that do allow many channels together do exist, they're used for cable TV for example, but the ones used in consumer electronics need to output a very powerful signal to completely overcome the other signals being received by the television, either from the cable or from the antenna. Its sort of like having to scream to a friend next to you in a crowded gymnasium, you need to be very loud in order to overcome the ambient "signal". Hope that helps explain it. Grock2 17:06, 11 October 2007 (UTC) —Preceding unsigned comment added by Grock2 (talk • contribs)