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Geoffrey S. Mendelson · October 27th 07, 09:59 PM posted to rec.radio.amateur.homebrew

wrote:

To transmit a video signal on a UHF or cable television channel
(signal will be low power and transmitted along a shielded wire to
other equipment), is all I need to do is mix an baseband video signal
(S-video) with the carrier of the channel in question? Or, is there
something more I need to do?

Not quite. In general TV signals are LSB reduced carrier with the audio as
an FM signal. The exact spacing between channels, and audio carrier frequency
varies from country to country. France uses AM audio.

ATV signals in the 430 mHz band are the same as TV signals, 1.2gHz and up use
FM video. I don't know about the 900 mHz band.

The easiest thing to do would be to take the modulator out of an old VCR.

Geoff.

--
Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM
IL Voice: (07)-7424-1667 U.S. Voice: 1-215-821-1838
Visit my 'blog at http://geoffstechno.livejournal.com/