I'ver written this twice, and the moment I go into any detail at all, it takes up an entire page. So here's the short version.

Purpose: view a DVR's video output on 8 TVs throughout the house. RG59 is in place. Cannot change this wiring.

Does product exist that would allow me to use existing RG59 to send a DVR's single analog video output to, say, 8 TVs ON EXISTING RG59? The resolution must be higher than standard analog, so I'm guessing HD-CVI would be used ... Signal feed at the head end would be the HDMI output of the DVR, and at each TV the signal to each TV would be HDMI at the TV. Over the existing RG59.


I repeated "on existing RG59" because the couple of people I spoke with about this kept forgetting that this cable is the limitation that drives this whole question.

Thank you!

Metra has a system that uses an HDMI over coax transmitter that can feed into a CATV splitter, then run to several HDMI over coax receivers.

Tx: [Link: metrahometheater.com]
Rx: [Link: metrahometheater.com]

I've not used it, but I'm sure Brent could give you more info.

Have you looked into SDI?

HDMI to SDI converter at DVR, 1x8 SDI DA, SDI to HDMI converters at displays. Standard SDI will do 1080P. I haven't done anything 4k over SDI. There shouldn't be any HDCP on your DVR output so it should be plug and play.

DVR HDMI Out>Blackmagic HDMI/SDI Converter> Blackmagic SDI Distribution Amp>Blackmagic SDI/HDMI Converter>Television

If I am to nitpick at your post, some of it doesn't make sense. Or more precisely, seems to be technically inaccurate.

You say "DVR's single analog video output". But then you go on to say "Signal feed at the head end would be the HDMI output of the DVR".
HDMI is not an analog output, so I assume you mean to use the digital HDMI output of the DVR (high resolution) vs. the analog CVBS output (480i).

HD-CVI, HD-TVI, and AHD are all HD analog standards in the CCTV world. They only apply from the camera to the DVR. There are no converters you can take an HD signal and run it between 2 adapters using those standards (not that I know of). There are single ended adapters you can but to take the HD-TVI/HD-CVI signal from a camera and convert it to an HD HDMI output (usually either 720p or 1080p) however.

What you are looking for, is what others have suggested so far. That is a device simply called HDMI over coax. There are 2 different iterations of this - those mentioned are:

1) HDMI to HD-SDI converters and splitters.

2) HD modulators with conventional splitters. These take 2 forms, the conventional modulators like you have used before with PVI (and you didn't like because it proved perplexing to you).
And proprietary setups like the Metra units Duck Tape linked to, which use DVB modulation. I have used a set of those and they worked great.

The Metra units work great. The "Pro" series are a bit more money but are more robust as well. [Link: metrahometheater.com]

Not to nit-pick. Oh, hell yes, I'm going to nit-pick the chief nit-picker on this forum.

What does "RG59" is in place mean?

- A home run from each TV to the head-end?

- A daisy-chain of coax jumping from TV to TV?

- A run of RG59 to one or more splitters (hidden and/or accessible)?

Details, Ernie, Details!

ZeeVee modulation could work, depending on

1. is the RG59 being used for off air? Qam cable? Baseband composite video? or is it unused at the time?
2. do remote sets have qam tuners?
3. End user would simply tune to the designated channel to watch their cameras

+1 Have done this on a few systems and worked great. Fantastic picture quality

Turnabout is fair play.*

A response one often gets at this point is many words that mean "you know what I mean."

You know what I mean.


EDIT: Thanks for the ideas.


*There was a great little record company that made classical records. The label was called Turnabout. Because a turnabout was a fair play.

These work great
[Link: provideoinstruments.com]

Thanks. Those are EXACTLY the model I was tearing my hair out about around two years ago. I got one and tried to make it ATSC modulate the output of a DirecTV receiver. I could not make it work.

That's not a big thing, really. That happens. But then, when they don't call back, and they twice make and break a telephone appointment with a tech guy then they simply do not respond to messages left... that's when there is a problem.

I still have the damn thing. They also never completed their communications with me about returning it.

HOWEVER this thread shows I have a use for it -- doing exactly what I was hoping to do with CVI. All the TVs in the house have cable boxes, so it should be easy to set up a single QAM channel throughout the house -- using the RG59 (it might be RG6) that presently is just taking composite video to all those TVs.

Ernie, have you looked at the brand I specified?

If I've got this right, the above link doesn't work but an appropriate product shows up from the second post here: [Link: remotecentral.com]

We've installed a few cameras for Oxblue. The cameras belong to Oxblue or to the customer where we install them.

The systems we've installed so far have just been a camera, about 15 square feet of solar cell, a box with a battery and charging system, and RF communication with Oxblue.

One was on the top of a parking structure, the other on top of a warehouse next door to the property to be surveilled. (You then have to deal with liability since the cameras had to go on property not owned by the camera targets.)