Just got an 811 (not sure why since they're going to be done soon but...) I have 301 receiver as well.  When I hook up the 301 I get 119 and 110 with great signal strength.  When I hook up the 811 I get nothing.  I have single dish with two LNBs side by side (not attached to each other).  I have them going into an SW21 switch.  When I do the switch check on the 811 I get nothing.  Unknown Switch.  Even when I go to my signal meter and bypass the sw21 and put 119 directly into my 811 I get nothing.  Anybody have any ideas?