In another thread (625 Upgrade & keep single cable to set) I posted "Here in the US Virgin Islands my installation includes a Channel Master Type 120 1.2 meter (48") SMC Antenna with a legacy dual lnb feeding a 508 and a 301 through 100 feet each of high quality RG6 coax marked good to 2200. I can only receive the 119 bird (I think that has to do with the signal footprint out here, 1000 miles from Miami). I want to replace the 301 with a 625 dual tuner box, but I *must* make it work with the present single cable - running another cable to that location is almost impossible. I read up on the DN site and learned about DP and DPP, and concluded that I need a DP dual LNBF, a DPP-44 switch and a DPP Separator at the 625 to maintain single cable benefits to each receiver. However, the installer of the original setup is telling me that I can get away with a DP dual LNBF and an ordinary splitter (rated to 2200) at the 625. Can this be true? and if so, why would the rest of the world be doing the DPP 3-step (DPP receiver, DPP Separator and DPP LNBF or switch)? I suppose I could try it his way first, but I figured someone out there would know the answer and save me the time and annoyance."
RandallA replied, quoting me: "'However, the installer of the original setup is telling me that I can get away with a DP dual LNBF and an ordinary splitter (rated to 2200) at the 625.'
In theory that should work because you only have one satellite feed but I've never tried it.
This is what I would do, get a DP Dual lnb and a DP34 switch. Run that single cable from the DP Dual to the DP34 switch near the 625 receiver and from the DP34 run 2 cables to the 625 receiver. That switch will allow you to feed the 508 and the 301 if you want to keep them." And later, "I know for sure the DP34 will work, I can't say the splitter setup will work because I've never tried it. You could get the DP Dual LNB and a approved splitter and try it. If it doesn't work just buy the DP34. The DPP44 is way too expensive for what you want.
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** DP Quad + DP Dual ==> DP34 + DP34 ==> 2 311s, 501, 211, 625 **
Is it possible that there are at least two ways to do it, (1) DP Dual LNB, DPP44 outside, DPP Separator, 625, and (2) DP Dual LNB, DP34 indoors, 625? and possibly a third, substituting a passive splitter or similar device for the switch?