Quote:
Originally Posted by jams
Hi,
I want to use an LCD in a classroom(s) to broadcast a closed circuit TV channel. I have the coax on the wall and will have the projector in the ceiling. I have S-Video and RCA cables for sound and video that go from the coax location on the wall to the ceiling. So I believe I need some form of tuner at the coax location to send the video signal to the ceiling.Right not I have nothing in place. I need as much of an idiot proof solution as possible. I know I need some kind of tuner, VCR etc.
Is there a product for this?
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I think you may be looking for an RF Modulator.
Here is an example: (
RadioShack.com - Home Entertainment: Accessories: Video accessories: Converters: RF Modulator )
They were recently used to adapt DVD players to early TVs that did not have inputs other than a 75 ohm coax antenna connection. VCR
recorders usually had an antenna
output but
some VCRs would not play DVD players on through them because of copyright protections, thus these modulators were necessary.
You can usually still find modulators at Walmart and any other store that has a selection of cables. The resolution may not be as good as some direct connections, such as S-Video, but it should be as good as common TV broadcast.
EDIT: After some thought, you might need the coax RF signal converted to S-Video instead of vice-versa. In that case, yes, a VCR or DVD
recorder, with antenna
input, should act as a remote tuner with S-Video and stereo output. I don't know of a common stand-alone tuner other than some of the digital (ATSC) set-top converters now coming out. But, for an older closed circuit distribution system, you likely need an
NTSC analog tuner such as found in older VCRs, DVDs, and TVs. Newer DVD recorders have
both ATSC and NTSC tuners built in if you are looking to invest in the near future.
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