you can use it too if you want to have more than one receiver with the same dish, so you can see the verticals and the horizontals at the same time in different receivers, and in this case the chaparral dual feed only works with C band lnb's.
I have (a borrowed) one on my dish right now while I wait for a newer dual c-band lnbf to replace my bsc621 that I got bored of. I wouldn't mind having one of my very own, but since the new units are so darn cheap, I'm not sure that the dual chap. is worth much to the "normal guy".
so this would work great with a FTA receiver so i wouldnt have to have the analog all i'd need is a V-BoxII or a dish mover and the dual lnb feedhorn would take care of polarity it self? without having to change channels like you do on the analog with a single Cband feed? am i right ?