Unless there is a work around that I am not aware of, using the BSC621-2 has two "minor" issues when using it with a 4DTV receiver/Fortec FTA setup. The BSC621-2 has a built-in DISEqC switch. This "electronic" switch is responsible for switching between Ku and C band
Currently I only use the 4DTV box for analog C-band and my dish mover (will be getting the VBoxII after Christmas). The 4DTV is slaved to my Fortec Ultra FTA receiver. The BSC621-2 works great with the Fortec. Also, if you set the L.O. frequency to the Universal-2 setting, the BSC621-2 can pick up circular polarity to pull in the Dish Network channels that are in the clear (Angel1, NASA, music, etc.).
The BSC621-2 is being controlled by the FTA box; therefore, if I leave the FTA box on a KU channel, I cannot pick up any C-Band analog channels on the 4DTV box. I must first tune the FTA box to a C-ban channel. In addition to this, you will only get the vertical or horizontal c-band channels depending on the polarity of the C-band channel that the FTA box is tuned to. I purchase the BSC621-2 for under $60 from Sadoun. So, for the price for having one lnbf that does just about everything, I don't mind the little quirks that I mentioned above.