Moving a coax for my HD DVR hr 21 700

There should be a grounding block on the dish coax before it goes into the house that grounds everthing.

The only time you can use a splitter is with a SWM system so there needs to be a power inserter and you need to connect it to the red power pass through port on the SWM splitter.  Any RG6 preferably solid copper core will work.  You will still need the  Connected Home adapter to connect to the internet for On Demand to the HR21 and also the DECA BB still needs to be connected to your router/Gateway and the SWM splitter.

Thank you for that.  Just to be sure I'm getting this right- the line that was ran into from my cable company is a rg6 cable I can use a single line from the dish to this cable and connect it to the 2 splitter in my house.   Can you think of any reason I should leave the 4 splitter from outside and put it as a single input into my house??

If you still need internet to the HR21 then you need a 4way for the power inserter and the coax from the DECA BB

Thanks for that.  Thankfully I only need to move from the current coaxial to this new one.  I don't plan on moving/removing anything else.

My current coax feed is an eyesore and it's not easy to move that current cable so I hope that new coax cable that was ran from outside can replace the old DTV coax that was ran.  I plan to remove the 4 cable splitter and try to run it straight off the satellite coax and use a coax to coax cable adapter to connect them outside and let the newest single line RG6 coax to the 2 prong splitter that feeds into a powered (I think it's a svm) but it's a powered black box where 2 cables go into a single box that goes into the cable box and the other line from the svm goes to a DECA with a ethernet cable plugged in....

I think this is the plan I have and think it should work.    I have a smaller splitter that I can replace the old 4 port splitter with but hopefully will work.

 You still need the power inserter connected to the dish coax to feed the SWM LNB

Thanks so so much for help, so sorry to be so needy...... currently I have these 3 devices that the coax runs to from the splitter.  I think if I have a RG6 cable that runs from the satellite dish to the 4 way splitter (that I hope to get rid of) and connect that cable to the new one via coax cable  joiner and connect the other end to the coax splitter inside the house-  Hopefully everything else will be the same.

sorry for the links but not sure how to add pic's to this post

https://www.ebay.com/itm/164875099828

https://www.amazon.com/DIRECTV-Broadband-Ethernet-DECABB1MR0-Generation/dp/B004HAOWLW

https://www.amazon.com/Consumer-Electronic-Products-Ethernet-DECA1MR01/dp/B00ENF92PC

On the bottom of the post box  there is a paper clip to add links and next to it is an icon that looks like a mountain and sun that is the image add link

Thank you so much for that and letting me know the link trick

I don't think I will any issues once I get it hooked and hopefully will be using it