Satellite frequency range for tv use is the C band 3.7 - 4.2 GHz and the newer K range 18 - 27 GHz. Apparently Vivid is able to affect frequencies in the terrestrial tv range 43 - 216 MHz and 470 - 608 MHz. Perhaps down the road a device can be developed to address the higher frequencies.
Btw, I see that at their web site that there is a new product listed - Symphony I/O Deluxe. It does everything the I/O does plus HDMI and SPDIF signals.