I currently have the following receivers: HR20-700 H21 H20-600 (which just died) An older non HD receiver. In talking with DTV I decided to upgrade to an HR2* for the H20 that just died. My first question is will I need a SWM8? If so, will I need to pay for it or is it part of the install? Will the installer have this with him? I had to pay around $125.00 for the upgraded receiver. Thanks in advance and I apologize if I am posting a question that has been asked before. In searching post I couldn't find my answer.