Re: Injecting IR into CATV

["E. Lee Dickinson" <ltek1@xxxxxxxxx>]

I've tried those in three different houses, and never had one work
reliably.

Now, neither is this injection system.

So far the only IR I've ever installed that I could recomend is
HARDWIRED.

Dave Houston wrote:
> Wouldn't it be simpler to use an IR2RF extender (e.g. X10 Powermid)?
>
> "E. Lee Dickinson" <ltek1@xxxxxxxxx> wrote:
>
> >Is there a filter I can put on a coax splitter so an injected IR signal
> >doesn't get attenuated?
> >
> >Working on this project at my mom's house:
> >
> >She has a Tivo in her bedroom which she would like to watch in the
> >Living room.  I purchased a Modulator with built in IR "processor," IR
> >targets, injector for the living room, etc.
> >
> >The first problem was that I could not get the video to show up until I
> >put an extra splitter outside the house, so that the bedroom and living
> >room are on their own splitter, which is then attached to the main
> >splitter which feeds the house. Slight loss in signal quality, but at
> >least the modulated chanels now show up.
> >
> >The problem I have is with the IR. First, I had to power the IR target
> >locally. The modulator was supposed to be able to power it over the
> >coax, but  I guess it's just too far away. Oh well, at least it works.
> >
> >However, it only works was long as the Tivo in the bedroom is not
> >connected to cable. There is another splitter in the bedroom -- I need
> >CATV into the tivo, and the modulator has to connect back to the wall
> >as well to inject the new channel.  I had a nice fancy 1ghz splitter,
> >that didn't work. Dropped back to an old one I had lying around, it
> >works as long as the tivo CATV is not plugged in. As soon as I plug it
> >in, the IR stops working.
> >
> >If I were working on a DMX or a video system, I'd say the input
> >impedance of the Tivo is too low, and it's sucking the IR signal out of
> >the cable, attenuating it to the point the modulator can no longer use
> >it.
> >
> >We have the same problem with X10 signal suckers, and solve it with
> >filters.
> >
> >Is there a filter I can put on the splitter so the injected  IR signal
> >doesn't get attenuated?
> >
> >Thanks,
> >
> >:Lee