Sending video and data on same RF channel
Sending video and data on same RF channel
(OP)
I have a video signal(NTSC or RS-170) and a low bit-rate data stream(like 9600 baud). I want to "add" these two signals and transmit them over a single channel RF link (S, C band). What hardware would I need to be able to do this? Can you buy a transmitter with two channel input? What about the decomm, on the receiver side, to split out the signal?
Thanks...Tom
Thanks...Tom





RE: Sending video and data on same RF channel
it would be 24 Mbits/sec. The audio is a negligeable plus.
So it would take about many hours to xmit 1 second video.
<nbucska@pcperipherals.com>
RE: Sending video and data on same RF channel
and audio on the RS-232.
Adding the RS-232 to the video is trivial: AM or FM a carrier with it and add it to the video. Modulate
the FR with the sum.
<nbucska@pcperipherals.com>
RE: Sending video and data on same RF channel
The TV companies mix data stream into their video signal in vertical retrace time. That is where caption and teletext are. However, they are fairly low bit rate.
twey