I'm assuming the RF converters are on seperate channels. If any are on
the same channel, then obviously you will have problems.

The not so nice thing about the american standard for TV is that the
bandwidth set aside for each channel was set aside based on the black
and white signals being sent at the time, and the thought that there
really wouldn't be that many stations broadcasting in one area at one
time. What this means is that a signal transmitting on a TV channel (say
3) will cause interferrence with a signal transmitting on an adjacent
channel (say 4) since the bandwith for a color signal is much larger
than a single channel. (This is NOT true for cable signals, which have a
larger bandwidth for each channel)

Lastly, I've noticed that cheap rf modulators create a small amount of
interference on many other channels, though they provide a good picture
for their own signal. Sometimes I think the people who make them assume
that when the power is on to the modulator, the only thing being watched
is their signal.

A real video distribution system has expensive modulators (well over $50
per channel), or a switch box of some kind.

Good luck.

-Adam

dtth wrote:

>I'm trying to cascade multiple video to RF converter and send all these
>RF signal to TV antenna input so that I can see multiple CCD camera
>images on my TV. So far I'm trying to get video from two CCD cams but
>problem arise when I turn on the power of the second converter. If the
>second converter is of, I can see video from CCD cam 1 clearly but when
>I switch on the second converter, the video is lost.
>
>Comments are welcome :-)
>
>Regards,
>Donny Tan
>
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