Thanks but the question was for standard def boxes......You have to look into how the RF signal is processed because some SD boxes have an RF input but is the signal true bypass or does it pass through an analog>digital circuit before the output... like some vcr's do...if so it may work. Just have to try I guess. Also coverter boxes are extremely easy to make. You can get all of the parts at any electronics outlet. You can even get two sided copper circuit boards that come with the resist pen and etch solution (for creating your own trace) or just use a breadboard which is even cheaper and makes soldering unecessary. I'm probably going to make one myself if i ever get some time and I will post the plans if I get the chance...

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