Sponsored Links I didn't know you needed a specific dish for the 722K, sorry for my ignorance. Would this
Diplexer work and if so I would need two, right? Amazon.com: RCA D920 Diplexer: Sports & Outdoors Now I understand that I need a TV antenna whether or not I use the diplexers. The only thing the Diplexer does is keep you from having to run a second coax cable ...