Coax connections

[michaelfish]

not sure if I got that technically michaelfish... but isn't one issue that there are multiple feeds in the chapel at times, at least for sound. Chanel 3 is satellite, Chanel 6 is chapel sound, other channels for languages?

If all we're thinking about is video, can what aclawson is suggesting work?

Rogerscr was discussing connecting a projector using an RCA connector on the wall plate. I am assuming that since projectors do not have television tuners, he means that he wants to connect a composite signal to the projector (the church projectors have composite video inputs)

Replacing an "F" connector on a wall plate with an RCA connector does not mean that a projector can work off that signal. "F" connectors are typically used for RF distribution (Television channels 3, 6 and so on) and projectors do not have RF television tuners. In addition to replacing the wall plate, the other end must be unscrewed from the splitter, tap or amplifier, and reterminated with an RCA or BNC connector and then connected to a video distribution amplifer, this will work as long as the coax run has no splitter in between the video distribution amplifier and the wall plate.

Many RF distribution systems (including those in church buildings) use taps along the coax line to provide for additional television connections from a single run of coax. A tap or splitter may be placed anywhere along the wire and hidden behind wall plates. If you swap the ends to run composite video through that coax there cannot be any taps or splitters anywhere in the line (taps and splitters do not work with composite video)

[russellhltn]

I am just not sure if it can care RF channel based signals. Only problem I see with HDMI being the future would be the lack of ability to cary multiple channels. Maybe ATSC over coax with HDMI over Cat5e/6 will be the next stage.

Well, I don't see projectors getting tuners anytime soon, so something compatible with projectors would be desired for the "big rooms". As for ATSC, from what I understand, the modulators are expensive. Possible because of all the digital processing needed.

So, I'm suspecting something like HDMI, perhaps with a remotely controlled selector box/distribution box might be the answer.

But either way, it's dependent on something cheap hitting the professional AV catalogs.

[rogerscr]

Looks like a 720p ATSC modulator runs ~$900 these days. NTSC modulators were quite expensive too until DVD players made the a needed accessory. I am sure the NTSC modulators were that expensive in the 80's then they first started putting these in. Our satellite receiver has Component HD outputs and these units have Component HD in so a simple upgrade might be all it takes. Units would have to replace all their CRTs with LCDs and upgrade the modulators but that might be all it takes.

[russellhltn]

I am sure the NTSC modulators were that expensive in the 80's then they first started putting these in.

I doubt it. Probably more like $100-200.