I just installed an IR remote control extender so my Tivo remote will control both my TV and my Tivo HD DVR.
I placed the IR target on the left bezel of my TV. It is secured with double backed tape already on it.
I put one of the two IR emitter buds on my TV IR sensor button and the other one on my Tivo DVR sensor button. They are secured with small round two-way clear tape.
The IR Hub sits on the same shelf as the TV.
My Tivo remote sends an IR signal to the IR target. It sends the signal to the IR Hub. The hub sends the IR signal to the two IR emitter buds which beam a signal light directly into the sensor eye of the TV and Tivo HD DVR.
It works better than the IR to RF to IR extender because I can still use my TV remote to make any changes to my TV , like turn off the internal speakers (I have a sound bar).
Also, the sound bar was blocking the TV IR sensor and I was having issues with volume control but now it doesn’t matter.
For those interested it is an Infrared (IR) Remote Control Extender Kit by Shaxon (Shaxon.com). I bought it at my local Fry’s Electronics Store in San Diego.