It says it will work for satellite systems like Directv, which is what I want.
Coax Video Demodulator For CATV Satellite CCTV System
This is a perfect RF/coax demodulator for those TVs or desktop monitors without coaxial inputs or broken coax terminals. It also works for other RF coaxial sources such as satellite receivers, CCTV surveillance camera system and so on.
This coaxial to DVI HDMI converter will convert the RF coax signals or analog cable TV signals into digital DVI or HDMI signals with higher picture quality output to any flat panel monitor or LCD TV.
The coax input of this video demodulator can also be used for those satellite receivers with modulated TV2 out from DirecTV, Dish Network and FTA satellite for NTSC regions.