I am aware of three combo lnb's for c/ku reception -- BSC621, DMS741 and the GeoSat (I don't know the number). I bought mine a couple of years ago -- the BSC621. It is controversial as far as ku reception, but mine is working fine!
Somebody gave me a later c/ku band 10 foot dish, a 1993 Perfect 10. It had a corotor II originally mounted on it. So I knew it was getting ku reception.
I bought me a v-box 5 for $50. I've seen them for $35-$40. I got a couple of hundred feet of used orange outside extension cord and put it inside plastic conduit from Lowe's to my dish about 150 feet away. I also ran a double strand of RG6 inside. One strand would have been enough. My lnb switches from c-band to ku through one wire. I think its called a 22 mhz switch. It's part of the BSC621.
I'm using old fortec ultra receivers because the remote frequency is compatible with my v-box. My newer Captiveworks 600P receivers wouldn't work. The v-box remote was causing erratic functions on my CW receiver.
I ran the coax to the v-box and then to my fortec ultra. I didn't even get the USALS going. I'm using manual positions to program my v-box. I'm sure USALS would have worked even better, but I'm lazy. Using it the way I do necessitates the use of the extra v-box remote. But, heck, it came with the box anyway. I might as well use it. I can hear remotes clicking together in the bed as I sleep at night.
I'm not suggesting you do it the way I did. Its just something to use for reference. I've got an extra Buzz regular receiver hooked up to four fixed ku dishes which I have hooked up to my favorite ku satellite dishes (old primestars). That way I don't have to worry about motoring them around so much. I've got all of it hooked up to different inputs on my new digital tv. I even hooked up an outside antenna for HD ota tv. That way I've got my local channels, too.
So its even a cheap hobby (compared to paying hundreds of dollars a year for DTV or DN).
But my wife couldn't figure all the switching. I've got a chart on my bedroom wall showing the satellite positions of about 20 satellites which I'm presently receiving. Sometimes I have to "bump" the v-box remote a couple of clicks to get a strong signal on my bug, ugly dish in bad weather. So I bought her the "Welcome Pack" from DN for $9.99 per month. Now she's happy with Kate Plus 8 minus John.
Hey, life is good. Go fta!!!