what kind of switch for c-band would i need i have a lmb whitch i have connection for 2 recievers ,i want to connect 2 more recievers i want to connect 4 all together . what kind of switch would i need?
Well, if that's all you want to do, then this post on Multiswitches, in the Switches Simplified FAQ has your answer.
Read through it carefully.
The part about Using Two-Input Multiswitches directly answers your question.
If you are a little more ambitious, the the next section, Using Four-Input Multiswitches might be helpful.
There's a drawing at the end of that post for the 4x4 switch hook-up.
Of course, feel free to read the entire thread, but that one post directly applies to what you asked about. - :up
definitely use a multiswitch, you could use a 2 input 4 output or (2x4)powered or passive (I prefer powered multiswitches).
a 4x4 = 4 input and 4 output , you could use only two for the time and have room to put up another dish and add two more inputs. options are limitless.