The B-Band converter will not affect your other receivers, but the Terk 5x8 may affect your H20. In some areas the KA band is not being utilized, but in fall when the 150 or so HD stations are broadcast, DTV will be using it. Since the Terk switch has an input range of 950-2150 MHz and the KA/KU system operates on the frequency of 250-750MHz, 950-1450MHz, and 1650-2150MHz, the Terk will not pass the KA band.
We recommend the
Zinwell WB68, it's a great switch at a good price, and we have only taken a few of these back as defective.
-Mike