Hi All. Great Forum Here..I had Sky Angel for many years but due to health I have increased my programming options by getting D 500..My setup is a quad 500 and a single, both legacy. I just have one 301 reciever..I have the quad and the single feed an sw-21. My first question is occasionally I go from sky angel to D500 and get an error message about not recieving satellite..I run the switch check and everything is fine afterwards and I get all the channels. All the connections are tight. I am wondering if the sw21 causes this. My other question is that we live in a mobile home and the reception is better if I stick the rabbit ears out the window. I wanted to bring the broadcast stations in without drilling another hole so I got the Terk 42..I hooked it up to the D500 since it is at the peak of the shed. I followed the instructions but there is no broadcast signal coming out the diplexer, sat signal is great..Is it getting lost by the sw 21 or the quad lnb or should I run it thru the single 61.5 lnb..Thanks for the help. May God Bless You..kid