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DVRs BNC out over COAX to TVs

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dekova:
I think four acronyms in a post title is a record for me.  Anyway... I'm looking for help with getting the signal from a DVR to multiple TVs.

On my shortlist is a DVR that has BNC and VGA outputs.  I'd like to take output from that DVR and split it to displays in three different rooms (all can display the same thing).  Ideally, inexpensive flatpanel LCDs.

Since I have access to the many unused coax runs in the house, I was thinking that I could attach the BNC output to unused coax and use a splitter to attach the coax that terminates close to where the monitors will be placed.

I can run the BNC output on coax, right?
What kind of input do I need on the TVs?  "Coaxial Antenna"?
Should I be looking for a DVR with a different type of output to make things easier?

I understand that VGA would provide a better signal and higher resolution but that kind of cabling would get expensive fast.

the toss:
The BNC output of the DVR is a composite video signal & will need to be run to the video input of your TV not the antenna. If you wish to run it to the antenna cabling then it will need to be modulated first. Switchable (channel) modulators can be purchased for this purpose

dekova:
Not looking to modulate unless I have to.  I googled "composite video" and it looks like it's the yellow cable on the standard RCA connectors.

If that's the case, can I just:
1. Connect the BNC out on DVR to existing unused coax
2. Use a coax splitter to run that signal to multiple rooms
3. Connect to the RCA video in (yellow plug) on the tv's/monitors using an "F Female / RCA Male" adapter.

Think that would work?  How concerned should I be about signal loss if the coax runs are 40 feet each?

Tube Tech:
what you need is a video distribution amplifier. one video in, four videos out.

$45 at Radio Shack:

http://www.radioshack.com/graphics/uc/rsk/Support/ProductManuals/1500320_PM_EN.pdf

$20 on ebay

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