Re: Injecting IR into CATV

[nobody@xxxxxxxxxxxx (Dave Houston)]

That's odd. I don't recall seeing many complaints about the Powermids (aside
from sensitivity to sunlight). One dealer rates Powermids as the best of the
several brands they sell based on hands-on testing.

"E. Lee Dickinson" <ltek1@xxxxxxxxx> wrote:

>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