Jump to the chase: Current equipment = 5LMB Slimline dish, 1 HR20-700, 1 H24, 1 H10. I am also running whole home (minus the H10). The four cables from the dish are feeding the 2 inputs on the HR20, one on the H24 and one on the H10. Thru several mis-shipments of replacement equipment from DTV, I now have an extral HR20-700 that I'd like to use instead of the H10. However I would like an extra cable for the 2nd cable input of the HR20 to fully utilize the unit. I've read about SWM and I know that will be the way to go, but I really don't want to change anything with the original HR20 or H24. I've seen SWM 8 kits on eBay for reasonable prices, but do I really need all of that just for one additional dish connection? If so, can the SWM 8 multiplexer be mounted outside? Is there a link that can help?