cctv into tv loft amp via VGA output

[martinnitram]

Fitting a HD cctv system, and i am trying to put a picture on my TV's through the VGA output via the loft amp.
The HDMi output is feeding the monitor by the way, and the DVR recorder doesn't have a BNC output.
Bought good quality VGA - BNC converter lead so i can put the vga output up a coax to the loft.

Trouble is i cant get a picture out of it, put a test monitor on the end of the VGA converter and just got squiggly lines.
Am i missing something?
I assumed VGA is a analogue signal.
Cheers

[martinnitram]

I had assumed (wrongly) the VGA - BNC conversion lead would put a picture into a coax.

The cctv system has a HDMi output for the monitor and just a VGA monitor output, no BNC output.
I have fitted a TV modulator in the loft and has a coax running to it from the cctv, approx 20M run.

It looks like i will need to convert the VGA signal to a composite (coax) signal before it goes into the TV modulator.

Does this sound right ?
Also, am i likely to lose much signal going through a VGA and then a TV modulator?

Running in a cat 5 is not an easy option as the house is pre wired (not by me) and difficult to route cables, but i'm open to suggestions.
Cheers

[martinnitram]

megaphone said:

How are you getting the modulated signal into your loft amp? Do you already have an aerial going in? How are you combining the two signals as this will affect the signal?

Edited by megaphone on Friday 21st November 17:36

Im using a standard cctv modulator which accepts a BNC / coax input from cctv output, which then tee's into the cable between the aerial and loft amp, have used these before and work well.

[martinnitram]

TonyRPH said:

It sounds like you want something like this VGA to composite converter so you can feed the VGA output of your box into this, and then this will feed the coax cable.

ETA: This one is the same thing but better illustrated and you'll also need a phono to BNC converter.

Edited by TonyRPH on Friday 21st November 17:49

Yes that's what i have in mind, how well they work and what kind of picture i will get one the signal has gone through this VGA/composite converter and then into the loft mounted modulator, i dont know.
Might have to buy one and see what happens.