This is how MY 22k switches work. When A is selected no signal or voltage is sent to B. When B is selected a repeated 22k signal gives full power to B and a intermittent and repeated every (approx 1 sec) full voltage to A. You may want to test yours with a digital multi-meter
I just picked up another offset Ku dish a little while ago. It looks to be a 5 footer at what used to be a Sears store. When I get it home, I'll post a picture. Not completely sure about the size, but I'd bet I'm not off too far. It's definitely far bigger than the Hughes Net in this thread. There's another on the roof, but I have a balance issue and I'm not going to attempt climbing that steep roof to get it. Its on a non-penetrating roof mount.
Love to have it, but not worth the risk to get it down.