king dome and dish satellite

1st make sure your King dome is setup for Dish Network and not direct tv.

2nd. make sure you do a check switch after the dish has found it's sat's. the receiver has to know what type of dish is..

My dish shows up as a SW-21 on the motorhome and a dish 500 at home.

that is the problem it is not receiving a signal there is nothing to check

Moved from Forum Technical Support

Since you are getting a signal on one satellite you should be able to preform the check switch. During that routine the antenna will move between the 110 and 119 (and 129 if it's new enough) and return the proper check switch results (SW21 as mentioned above). There is a specific procedure required so be sure to check your owners manual for the procedure.
Also, as mentioned above, all of the domes are set for DirecTV from the factory (except the new Relay) and must be re-programmed for Dish Network with a factory key pad.

I can preform the check switch , but still not getting a signal

Are you sure the dome has been programmed for Dish?
Where are you located? Has it worked in the past? What receiver model are you using? Are you following the King Dome directions exactly? What parameters do you have set in the Dish receiver menu before you start the search?
Any additional details?