I have a vacation home where I want to bring back and forth my HR24 receiver. I think the extra dish I have is a SWM with the 3 style LNB? See pictures below. Do I need to buy a single LNB now that I only need one cable in or can I use the existing dish as is? The installer at my primary home said I could use the existing dish but just one cable. If that's the case which do I choose? Or, do I need to buy: DIRECTV SL3-SWM SlimLine Single Wire Ka/Ku Triple LNB With Built-In Multiswitch http://www.amazon.com/DIRECTV-SL3-SWM-SlimLine-Built-In-Multiswitch/dp/B003ZT28GC/ref=pd_sim_e_2 I am also wondering which power inserter I need and if this dish will even work. I need a run in excess of 100 feet so do I need the unit with 29 volts vs. 21? http://www.amazon.com/DIRECTV-PI-29Z-Power-Inserter-SWM-LNB/dp/B003C292AC/ref=sr_1_2?ie=UTF8&qid=1372473859&sr=8-2&keywords=directv+power+inserter Thank you from a newbie!!